SKF bearing fit chart, selecting SKF bearing fits

SKF bearing fits can be selected by following the recommendations for bearing seat diameter tolerances. These recommendations will provide adequate solutions for the majority of applications. For more information, refer to SKF bearing selection.

SKF bearing fit to shafts and housings

The following SKF bearing fit chart provide recommendations for tolerances of shaft and housing seats. They are valid for standard applications but do not cover all details of a specific application. You should considered selecting fits and tolerances for SKF bearing seats and abutments.

These recommendations are valid for bearings with Normal dimensional tolerances. They can also be used for bearings to P6 dimensional tolerances. The tighter P6 tolerance zone changes the resulting fit only slightly. For information about tolerance, refer to SKF bearing tolerances.

Recommended seat tolerances for SKF metric bearings

For solid steel shafts

Tolerances for solid steel shafts - seats for radial ball bearings

Conditions Shaft diameter
mm
Dimensional tolerance Total radial run-out tolerance Total axial run-out tolerance Ra
µm
Rotating inner ring load or direction of load indeterminate
Light loads (P ≤ 0,05 C) ≤ 17 js5 IT4/2 IT4 0,4
  > 17 to 100 j6 IT5/2 IT5 0,8
  > 100 to 140 k6 IT5/2 IT5 1,6
           
Normal to heavy loads (0,05 C < P ≤ 0,1 C) ≤ 10 js5 IT4/2 IT4 0,4
  > 10 to 17 j5 IT4/2 IT4 0,4
  > 17 to 100 k5 IT4/2 IT4 0,8
  > 100 to 140 m5 IT4/2 IT4 0,8
  > 140 to 200 m6 IT5/2 IT5 1,6
  > 200 to 500 n6 IT5/2 IT5 1,6
  > 500 p7 IT6/2 IT6 3,2
           
Stationary inner ring load
Easy axial displacement of inner ring on shaft desirable g64) IT5/2 IT5 1,6
Easy axial displacement of inner ring on shaft unnecessary h6 IT5/2 IT5 1,6
           
Axial loads only j6 IT5/2 IT5 1,6

Tolerances for solid steel shafts - seats for radial roller bearings

Conditions Shaft diameter
mm
Dimensional tolerance Total radial run-out tolerance Total axial run-out tolerance Ra
µm
Rotating inner ring load or direction of load indeterminate
Light loads (P ≤ 0,05 C) ≤ 25 j6 IT5/2 IT5 0,8
  > 25 to 60 k6 IT5/2 IT5 0,8
  > 60 to 140 m6 IT5/2 IT5 0,8
           
Normal to heavy loads (0,05 C < P ≤  0,1 C) ≤ 30 k6 IT5/2 IT5 0,8
  > 30 to 50 m5 IT5/2 IT5 0,8
  > 50 to 65 n5 IT5/2 IT5 0,8
  > 65 to 100 n6 IT5/2 IT5 0,8
  > 100 to 280 p6 IT5/2 IT5 1,6
  > 280 to 500 r6 IT5/2 IT5 1,6
  > 500 r7 IT6/2 IT6 3,2
           
Heavy to very heavy loads and high peak loads 
under difficult operating conditions (P > 0,1 C)
> 50 to 65 n5 IT5/2 IT5 0,8
  > 65 to 85 n6 IT5/2 IT5 0,8
  > 85 to 140 p6 IT5/2 IT5 0,8
  > 140 to 300 r6 IT5/2 IT5 1,6
  > 300 to 500 r6 + IT64) IT5/2 IT5 1,6
  > 500 r7 + IT74) IT6/2 IT6 3,2
           
Stationary inner ring load
Easy axial displacement of inner ring on shaft desirable   g65) IT5/2 IT5 1,6
Easy axial displacement of inner ring on shaft unnecessary   h6 IT5/2 IT5 1,6
           
Axial loads only j6 IT5/2 IT5 1,6

Tolerances for solid steel shafts - seats for thrust bearings

Conditions Shaft diameter
mm
Dimensional tolerance Total radial run-out tolerance Total axial run-out tolerance Ra
µm
Axial loads only on thrust ball bearings 
    h6 IT5/2 IT5 1,6
           
Combined radial and axial loads on spherical roller thrust bearings
Stationary load on shaft washer all j6 IT5/2 IT5 1,6
           
Rotating load on shaft washer, ≤ 200 k6 IT5/2 IT5 1,6
or direction of load indeterminate > 200 to 400 m6 IT5/2 IT5 1,6
  > 400 n6 IT5/2 IT5 1,6

For cast iron and steel housings

Tolerances for cast iron and steel housings – seats for radial bearings

  Conditions Dimensional tolerance Total radial run-out tolerance Total axial run-out tolerance Ra Displacement of outer ring
For non-split housings only Rotating outer ring load
  Heavy loads on bearings in thin-walled housings, heavy peak loads (P > 0,1 C) P7 IT6/2 IT6 3,2 Cannot be displaced
             
  Normal to heavy loads (P > 0,05 C) N7 IT6/2 IT6 3,2 Cannot be displaced
             
  Light and variable loads (P = 0,05 C) M7 IT6/2 IT6 3,2 Cannot be displaced
             
  Direction of load indeterminate
  Heavy peak loads M7 IT6/2 IT6 3,2 Cannot be displaced
             
  Normal to heavy loads (P > 0,05 C), axial displacement of outer ring unnecessary K75) IT6/2 IT6 3,2 In most cases, cannot be displaced
             
             
For non-split housings and split housings Direction of load indeterminate
  Light to normal loads (P = 0,1 C), axial displacement of outer ring desirable J7 IT6/2 IT6 3,2 In most cases, can be displaced
             
  Stationary outer ring load
  Loads of all kinds H73) IT6/2 IT6 3,2 Can be displaced
             
  Light to normal loads (P = 0,1 C) with simple working conditions H83) IT6/2 IT6 3,2 Can be displaced
             
  Thermal expansion of the shaft G74) IT6/2 IT6 3,2 Can be displaced

Tolerances for cast iron and steel housings - seats for thrust bearings

Conditions Dimensional tolerance Total axial run-out tolerance Ra Remarks
Axial loads only
Thrust ball bearings H8 IT7 6,3 For less precise bearing arrangements, there can be a 
radial clearance of up to 0,001 D.
         
Spherical roller thrust bearings where 
separate bearings provide radial location
IT6   Housing washer must be fitted with an adequate radial gap 
so that no radial load can act on the thrust bearings.
         
Combined radial and axial loads on spherical roller thrust bearings
Stationary load on housing washer 
arrangements
H7 IT6 3,2  
         
Rotating load on housing washer M7 IT6 3,2  

SKF bearings with a tapered bore mounted on tapered sleeves

SKF bearings with a tapered bore are always mounted with an interference fit for the inner ring. The fit is determined by the distance through which the inner ring is driven up on a tapered sleeve.

For seats of bearings mounted on tapered sleeves, wider diameter tolerances are permissible. The total run-out tolerances should be the same as for bearings on cylindrical seats.

Suitable tolerances are listed in table below. They are valid for moderate speeds and moderate precision requirements.

Tolerances for seats of bearings mounted on tapered sleeves

Shaft diameter

Nominal
Diameter tolerance
h9
Total radial run-out
IT5/2
> U L max.
mm μm μm
         
10 18 0 –43 4
18 30 0 –52 5
30 50 0 –62 6
         
50 80 0 –74 7
80 120 0 –87 8
120 180 0 –100 9
         
180 250 0 –115 10
250 315 0 –130 12
315 400 0 –140 13
         
400 500 0 –155 14
500 630 0 –175 16
630 800 0 –200 18
         
800 1 000 0 –230 20
1 000 1 250 0 –260 24

SKF bearing fit chart do not cover all details of a specific application and so you may find that adjustments may be necessary. When selecting fits, you should consider the following topics. 

SKF bearing fits selection

Conditions of rotation

Conditions of rotation refer to the relative motion between a bearing ring and the load acting upon it. Essentially, there are three different conditions:

  • rotating load
  • stationary load
  • direction of load indeterminate

Conditions of rotation

Operating conditions Schematic illustration Load condition Recommended fits
Rotating inner ring Conditions of rotation and loading 1 Rotating inner ring load Interference fit for the inner ring
Stationary outer ring Stationary outer ring load Loose fit for the outer ring possible
Constant load direction    
Rotating inner ring Conditions of rotation and loading 3 Stationary inner ring load Loose fit for the inner ring possible
Stationary outer ring Rotating outer ring load Interference fit for the outer ring
Load rotates with the inner ring    
Stationary inner ring Conditions of rotation and loading 2 Stationary inner ring load Loose fit for the inner ring possible
Rotating outer ring Rotating outer ring load Interference fit for the outer ring
Constant load direction    
Stationary inner ring Conditions of rotation and loading 4 Rotating inner 
ring load 
Interference fit 
for the inner ring
Rotating outer ring Stationary outer ring load Loose fit for the outer ring possible
Load rotates with outer ring    

Rotating loads occur where either the bearing ring or the applied load is stationary while the other rotates. A bearing ring mounted with a loose fit will creep on its seat when subjected to a rotating load, and this can lead to fretting corrosion and eventually wear. To prevent this from happening, an adequate interference fit, between the ring subjected to rotating load and its seat, is required. For the purpose of selecting fits, loads that oscillate (such as loads acting on connecting rod bearings) are considered to be rotating loads. 

Stationary loads occur where both the bearing ring and the applied load are stationary or both are rotating at the same speed. Under these conditions, a bearing ring normally does not creep and there is no risk of fretting corrosion or wear. In this case, the ring does not need to have an interference fit. 

Direction of load indeterminate refers to variable or alternating external loads, sudden load peaks, vibration or unbalanced loads in high-speed applications. These give rise to changes in the direction of load, which cannot be accurately described. Where the direction of load is indeterminate and particularly where heavy loads are involved, there is a risk of fretting corrosion or wear. You should use an interference fit for both rings. The same fit as for a rotating load is normally suitable. 
Where the outer ring should be able to move axially in its housing, a loose fit must be used. However, a loose fit can result in housing wear. Where this cannot be tolerated, either protect the bearing seat surface or select a bearing that accommodates the axial displacement within itself (cylindrical roller, needle roller or CARB bearing). These bearings can be mounted with an interference fit for both rings. 

Magnitude of load

The ring of a SKF bearing deforms proportionately to the load. For rotating inner ring loads, this deformation can loosen the interference fit between the inner ring and shaft, causing the ring to creep on its shaft seat. The heavier the load, the tighter the interference fit required. The required interference can be estimated using: 

required-interference

Δ required interference [µm]
d bearing bore diameter [mm]
B bearing width [mm]
Fr radial load [kN]

Where sudden load peaks or vibration occurs, a tighter fit can be required. 

Temperature differences

  • In operation, bearing rings normally reach a temperature that is higher than that of the components to which they are fitted. This can loosen the fit on the shaft seat, while outer ring expansion can prevent the desired axial displacement in the housing.
  • Rapid start-up can loosen the inner ring fit when the frictional heat generated by the bearing is not dissipated quickly enough. In some cases, friction from seals can generate enough heat to loosen the inner ring fit.
  • External heat and the direction of heat flow can have an effect on fits. Steady-state and transient conditions must be considered.

Precision requirements

To minimize deflections and vibration in precision or high-speed applications, interference or transition fits are recommended. 

Design and material of the shaft and housing

  • Distortion of the bearing rings caused by shaft or housing design, for example by discontinuities of the seat or uneven wall thickness, should be avoided.
  • For split housings, SKF generally recommends loose fits. The tighter (less loose) the fit is in a split housing, the higher are the requirements for the geometrical tolerances of the seat. Split housings machined to tight tolerances, such as SKF plummer block housings, can be used for transition fits up to K7.
  • Bearings mounted in thin­-walled housings or on hollow shafts require tighter interference fits than those recommended for robust cast iron housings or solid shafts.
  • Shafts or housings made of materials other than steel or cast iron may require different fits depending on material strength and thermal properties.

Ease of mounting and dismounting

Loose fits are beneficial for easy mounting and dismounting. In applications where interference fits are required for both the shaft and housing seat, separable bearings or bearings with a tapered bore should be considered. Bearings with a tapered bore can be mounted on tapered sleeves or on a tapered shaft seat.

Axial displacement of the bearing in the non-locating position

Where a non-­locating bearing needs to be able to move axially on its seat, the ring subjected to the stationary load should have a loose fit. For additional information about SKF bearings in the non-locating position, refer to SKF bearing type and arrangement.

Tolerances for SKF bearing seats and abutments

Dimensional tolerances for bearing seats are dictated by the required fit. Precision requirements of the application will direct you to which bearing tolerance class to use , and consequently, what run-out tolerance of the seat is needed. The run-out of the seat is specified by the total radial run-out of the seat surface and the total axial run-out of the abutment (ISO 1101, 18.16).

For bearings with Normal tolerances in general industrial applications, seats are typically machined to the following tolerances:

  • shaft seats to grade IT6 dimensional tolerances and grade IT5 total run-out tolerances
  • housing seats to grade IT7 dimensional tolerances and grade IT6 total run-out tolerances

Suitable combinations of tolerance grades are listed in table below.
Tolerance grades for bearing seats

Dimensional  tolerance grade Geometrical tolerance grades Dimensional  tolerance grade Geometrical tolerance grades
  Radial run-out Axial run-out Radial run-out Axial run-out
  t1 t2 t1 t2
Bearing to Normal tolerances 
(moderate speed and running accuracy)
IT6 IT5/2 IT5 IT7 IT6/2 IT6
Bearing to P6 tolerances 
(higher speeds or running accuracy)
IT5 IT4/2 IT4 IT6 IT5/2 IT5
Bearing to P5 tolerances 
(high speeds and running accuracy)
IT4 IT3/2 IT3 IT5 IT4/2 IT4

The tolerance zone for the total radial run-out is limited to half of the ISO tolerance grade, because the run-out tolerance is specified as a difference in radii of two coaxial cylinders, and the ISO tolerance grade refers to the diameter.

For seats of bearings mounted on withdrawal or adapter sleeves, wider diameter tolerances are permissible. The total run-out tolerances should be the same as for bearings on cylindrical seats.

Tolerance values for ISO tolerance grades are listed in table below.

Nominal Tolerance grades
dimension IT3     IT4     IT5     IT6     IT7     IT8     IT9    
> max.
mm µm
                 
1 3 2 3 4 6 10 14 25
3 6 3 4 5 8 12 18 30
6 10 3 4 6 9 15 22 36
                 
10 18 3 5 8 11 18 27 43
18 30 4 6 9 13 21 33 52
30 50 4 7 11 16 25 39 62
                 
50 80 5 8 13 19 30 46 74
80 120 6 10 15 22 35 54 87
120 180 8 12 18 25 40 63 100
                 
180 250 10 14 20 29 46 72 115
250 315 12 16 23 32 52 81 130
315 400 13 18 25 36 57 89 140
                 
400 500 15 20 27 40 63 97 155
500 630 32 44 70 110 175
630 800 36 50 80 125 200
                 
800 1 000 40 56 90 140 230
1 000 1 250 47 66 105 165 260
1 250  1 600  55 78 125 195 310
                 
1 600 2 000 65 92 150 230 370
2 000 2 500 78 110 175 280 440

Tolerances and resultant fits chart

Shaft and housing tolerances and resultant fits
Shaft and housing tolerances and resultant fits

The tables in this section provide information about bearing tolerances, seat tolerances and resultant fits. These should enable you to determine easily the maximum and minimum values of fits when using ISO tolerance classes for bearing seats and bearings with Normal tolerances for the bore and outside diameter.

The tables cannot be used for SKF tapered roller bearings when d ≤ 30 mm or D ≤ 150 mm, or for thrust bearings when D ≤ 150 mm. The diameter tolerances for these bearings deviate from the Normal tolerances for other rolling bearings.

The tables list:

  • the upper and lower limits of bore or outside diameter deviations for bearings with Normal tolerances
  • the upper and lower limits of shaft or housing bore diameter deviations for relevant tolerance classes in accordance with ISO 286­2
  • the smallest and largest values of the theoretical interference (–) or clearance (+)
  • the smallest and largest values of the ±3σ probable interference (–) or clearance (+)

The appropriate values for shaft seats are listed for the following tolerance classes:

Shaft tolerances and resultant fits 

Shaft
Nominal diameter
Bearing
Bore diameter tolerance
Shaft diameter deviations, resultant fits
Tolerance classes
d tΔdmp f5 f6 g5 g6 h5
    Deviations (shaft diameter)
    Theoretical interference (–)/clearance (+)
over incl. low high Probable interference (–)/clearance (+)
mm µm µm
3 –8 0 –6 –10 –6 –12 –2 –6 –2 –8 0 –4
        –2 +10 –2 +12 –6 +6 –6 +8 –8 +4
        –1 +9 0 +10 –5 +5 –4 +6 –7 +3
                           
3 6 –8 0 –10 –15 –10 –18 –4 –9 –4 –12 0 –5
        +2 +15 +2 +18 –4 +9 –4 +12 –8 +5
        +3 +14 +4 +16 –3 +8 –2 +10 –7 +4
                           
6 10 –8 0 –13 –19 –13 –22 –5 –11 –5 –14 0 –6
        +5 +19 +5 +22 –3 +11 –3 +14 –8 +6
        +7 +17 +7 +20 –1 +9 –1 +12 –6 +4
                           
10 18 –8 0 –16 –24 –16 –27 –6 –14 –6 –17 0 –8
        +8 +24 +8 +27 –2 +14 –2 +17 –8 +8
        +10 +22 +10 +25 0 +12 0 +15 –6 +6
                           
18 30 –10 0 –20 –29 –20 –33 –7 –16 –7 –20 0 –9
        +10 +29 +10 +33 –3 +16 –3 +20 –10 +9
        +12 +27 +13 +30 –1 +14 0 +17 –8 +7
                           
30 50 –12 0 –25 –36 –25 –41 –9 –20 –9 –25 0 –11
        +13 +36 +13 +41 –3 +20 –3 +25 –12 +11
        +16 +33 +17 +37 0 +17 +1 +21 –9 +8
                           
50 80 –15 0 –30 –43 –30 –49 –10 –23 –10 –29 0 –13
        +15 +43 +15 +49 –5 +23 –5 +29 –15 +13
        +19 +39 +19 +45 –1 +19 –1 +25 –11 +9
                           
80 120 –20 0 –36 –51 –36 –58 –12 –27 –12 –34 0 –15
        +16 +51 +16 +58 –8 +27 –8 +34 –20 +15
        +21 +46 +22 +52 –3 +22 –2 +28 –15 +10
                           
120 180 –25 0 –43 –61 –43 –68 –14 –32 –14 –39 0 –18
        +18 +61 +18 +68 –11 +32 –11 +39 –25 +18
        +24 +55 +25 +61 –5 +26 –4 +32 –19 +12
                           
180 250 –30 0 –50 –70 –50 –79 –15 –35 –15 –44 0 –20
        +20 +70 +20 +79 –15 +35 –15 +44 –30 +20
        +26 +64 +28 +71 –9 +29 –7 +36 –24 +14
                           
250 315 –35 0 –56 –79 –56 –88 –17 –40 –17 –49 0 –23
        +21 +79 +21 +88 –18 +40 –18 +49 –35 +23
        +29 +71 +30 +79 –10 +32 –9 +40 –27 +15
                           
315 400 –40 0 –62 –87 –62 –98 –18 –43 –18 –54 0 –25
        +22 +87 +22 +98 –22 +43 –22 +54 –40 +25
        +30 +79 +33 +87 –14 +35 –11 +43 –32 +17
                           
400 500 –45 0 –68 –95 –68 –108 –20 –47 –20 –60 0 –27
        +23 +95 +23 +108 –25 +47 –25 +60 –45 +27
        +32 +86 +35 +96 –16 +38 –13 +48 –36 +18
                           
500 630 –50 0 –76 –104 –76 –120 –22 –50 –22 –66 0 –28
        +26 +104 +26 +120 –28 +50 –28 +66 –50 +28
        +36 +94 +39 +107 –18 +40 –15 +53 –40 +18
                           
630 800 –75 0 –80 –112 –80 –130 –24 –56 –24 –74 0 –32
        +5 +112 +5 +130 –51 +56 –51 +74 –75 +32
        +17 +100 +22 +113 –39 +44 –34 +57 –63 +20
                           
800 1 000 –100 0 –86 –122 –86 –142 –26 –62 –26 –82 0 –36
        –14 +122 –14 +142 –74 +62 –74 +82 –100 +36
        0 +108 +6 +122 –60 +48 –54 +62 –86 +22
                           
1 000 1 250 –125 0 –98 –140 –98 –164 –28 –70 –28 –94 0 –42
        –27 +140 –27 +164 –97 +70 –97 +94 –125 +42
        –10 +123 –3 +140 –80 +53 –73 +70 –108 +25
                           
1 250 1 600 –160 0 –110 –160 –110 –188 –30 –80 –30 –108 0 –50
        –50 +160 –50 +188 –130 +80 –130 +108 –160 +50
        –29 +139 –20 +158 –109 +59 –100 +78 –139 +29
                           
1 600 2 000 –200 0 –120 –180 –120 –212 –32 –92 –32 –124 0 –60
        –80 +180 –80 +212 –168 +92 –168 +124 –200 +60
        –55 +155 –45 +177 –143 +67 –133 +89 –175 +35


Shaft
Nominal diameter
Bearing
Bore diameter tolerance
Shaft diameter deviations, resultant fits
Tolerance classes
d tΔdmp h6 h8 h9 j5 j6
    Deviations (shaft diameter)
    Theoretical interference (–)/clearance (+)
> L U Probable interference (–)/clearance (+)
mm µm µm
3 –8 0 0 –6 0 –14 0 –25 +2 –2 +4 –2
        –8 +6 –8 +14 –8 +25 –10 +2 –12 +2
        –6 +4 –6 +12 –5 +22 –9 +1 –10 0
                           
3 6 –8 0 0 –8 0 –18 0 –30 +3 –2 +6 –2
        –8 +8 –8 +18 –8 +30 –11 +2 –14 +2
        –6 +6 –5 +15 –5 +27 –10 +1 –12 0
                           
6 10 –8 0 0 –9 0 –22 0 –36 +4 –2 +7 –2
        –8 +9 –8 +22 –8 +36 –12 +2 –15 +2
        –6 +7 –5 +19 –5 +33 –10 0 –13 0
                           
10 18 –8 0 0 –11 0 –27 0 –43 +5 –3 +8 –3


Shaft
Nominal diameter
Bearing
Bore diameter tolerance
Shaft diameter deviations, resultant fits
Tolerance classes
d tΔdmp js4 js5 js6 js7 k4
    Deviations (shaft diameter)
    Theoretical interference (–)/clearance (+)
over incl. low high Probable interference (–)/clearance (+)
mm µm µm
3 –8 0 +1,5 –1,5 +2 –2 +3 –3 +5 –5 +3 0
        –9,5 +1,5 –10 +2 –11 +3 –13 +5 –11 0
        –8,5 +0,5 –9 +1 –9 +1 –11 +3 –10 –1
                           
3 6 –8 0 +2 –2 +2,5 –2,5 +4 –4 +6 –6 +5 +1
        –10 +2 –10,5 +2,5 –12 +4 –14 +6 –13 –1
        –9 +1 –9 +1 –10 +2 –12 +4 –12 –2
                           
6 10 –8 0 +2 –2 +3 –3 +4,5 –4,5 +7,5 –7,5 +5 +1
        –10 +2 –11 +3 –12,5 +4,5 –15,5 +7,5 –13 –1
        –9 +1 –9 +1 –11 +3 –13 +5 –12 –2
                           
10 18 –8 0 +2,5 –2,5 +4 –4 +5,5 –5,5 +9 –9 +6 +1
        –10,5 +2,5 –12 +4 –13,5 +5,5 –17 +9 –14 –1
        –9,5 +1,5 –10 +2 –11 +3 –14 +6 –13 –2
                           
18 30 –10 0 +3 –3 +4,5 –4,5 +6,5 –6,5 +10,5 –10,5 +8 +2
        –13 +3 –14,5 +4,5 –16,5 +6,5 –20,5 +10,5 –18 –2
        –10,5 +1,5 –12 +2 –14 +4 –17 +7 –16 –4
                           
30 50 –12 0 +3,5 –3,5 +5,5 –5,5 +8 –8 +12,5 –12,5 +9 +2
        –15,5 +3,5 –17,5 +5,5 –20 +8 –24,5 +12,5 –21 –2
        –13,5 +1,5 –15 +3 –16 +4 –20 +8 –19 –4
                           
50 80 –15 0 +4 –4 +6,5 –6,5 +9,5 –9,5 +15 –15 +10 +2
        –19 +4 –21,5 +6,5 –24,5 +9,5 –30 +15 –25 –2
        –15,5 +1,5 –18 +3 –20 +5 –25 +10 –22 –5
                           
80 120 –20 0 +5 –5 +7,5 –7,5 +11 –11 +17,5 –17,5 +13 +3
        –25 +5 –27,5 +7,5 –31 +11 –37,5 +17,5 –33 –3
        –22 +2 –23 +3 –25 +5 –31 +11 –30 –6
                           
120 180 –25 0 +6 –6 +9 –9 +12,5 –12,5 +20 –20 +15 +3
        –31 +6 –34 +9 –37,5 +12,5 –45 +20 –40 –3
        –27 +2 –28 +3 –31 +6 –37 +12 –36 –7
                           
180 250 –30 0 +7 –7 +10 –10 +14,5 –14,5 +23 –23 +18 +4
        –37 +7 –40 +10 –44,5 +14,5 –53 +23 –48 –4
        –32 +2 –34 +4 –36 +6 –43 +13 –43 –9
                           
250 315 –35 0 +8 –8 +11,5 –11,5 +16 –16 +26 –26 +20 +4
        –4 +8 –46,5 +11,5 –51 +16 –61 +26 –55 –4
        –37 +2 –39 +4 –42 +7 –49 +14 –49 –10
                           
315 400 –40 0 +9 –9 +12,5 –12,5 +18 –18 +28,5 –28,5 +22 +4
        –49 +9 –52,5 +12,5 –58 +18 –68,5 +28,5 –62 –4
        –42 +2 –44 +4 –47 +7 –55 +15 –55 –11
                           
400 500 –45 0 +10 –10 +13,5 –13,5 +20 –20 +31,5 –31,5 +25 +5
        –55 +10 –58,5 +13,5 –65 +20 –76,5 +31,5 –70 –5
        –48 +3 –49 +4 –53 +8 –62 +17 –63 –12
                           
500 630 –50 0 +14 –14 +22 –22 +35 –35
        –64 +14 –72 +22 –85 +35
        –54 +4 –59 +9 –69 +19
                           
630 800 –75 0 +16 –16 +25 –25 +40 –40
        –91 +16 –100 +25 –115 +40
        –79 +4 –83 +8 –93 +18
                           
800 1 000 –100 0 +18 –18 +28 –28 +45 –45
        –118 +18 –128 +28 –145 +45
        –104 +4 –108 +8 –118 +18
                           
1 000 1 250 –125 0 +21 –21 +33 –33 +52 –52
        –146 +21 –158 +33 –177 +52
        –129 +4 –134 +9 –145 +20
                           
1 250 1 600 –160 0 +25 –25 +39 –39 +62 –62
        –185 +25 –199 +39 –222 +62
        –164 +4 –169 +9 –182 +22
                           
1 600 2 000 –200 0 +30 –30 +46 –46 +75 –75
        –230 +30 –246 +46 –275 +75
        –205 +5 –211 +11 –225 +25


Shaft
Nominal diameter
Bearing
Bore diameter tolerance
Shaft diameter deviations, resultant fits
Tolerance classes
d tΔdmp k5 k6 m5 m6 n5
    Deviations (shaft diameter)
    Theoretical interference (–)
> L U Probable interference (–)
mm µm µm
3 –8 0 +4 0 +6 0 +6 +2 +8 +2 +8 +4
        –12 0 –14 0 –14 –2 –16 –2 –16 –4
        –11 –1 –12 –2 –13 –3 –14 –4 –15 –5
                           
3 6 –8 0 +6 +1 +9 +1 +9 +4 +12 +4 +13 +8
        –14 –1 –17 –1 –17 –4 –20 –4 –21 –8
        –13 –2 –15 –3 –16 –5 –18 –6 –20 –9
                           
6 10 –8 0 +7 +1 +10 +1 +12 +6 +15 +6 +16 +10
        –15 –1 –18 –1 –20 –6 –23 –6 –24 –10
        –13 –3 –16 –3 –18 –8 –21 –8 –22 –12
                           
10 18 –8 0 +9 +1 +12 +1 +15 +7 +18 +7 +20 +12
      –17 –1 –20 –1 –23 –7 –26 –7 –28 –12
        –15 –3 –18 –3 –21 –9 –24 –9 –26 –14
                           
18 30 –10 0 +11 +2 +15 +2 +17 +8 +21 +8 +24 +15
        –21 –2 –25 –2 –27 –8 –31 –8 –34 –15
        –19 –4 –22 –5 –25 –10 –28 –11 –32 –17
                           
30 50 –12 0 +13 +2 +18 +2 +20 +9 +25 +9 +28 +17
        –25 –2 –30 –2 –32 –9 –37 –9 –40 –17
        –22 –5 –26 –6 –29 –12 –33 –13 –37 –20
                           
50 80 –15 0 +15 +2 +21 +2 +24 +11 +30 +11 +33 +20
        –30 –2 –36 –2 –39 –11 –45 –11 –48 –20
        –26 –6 –32 –6 –35 –15 –41 –15 –44 –24
                           
80 120 –20 0 +18 +3 +25 +3 +28 +13 +35 +13 +38 +23
        –38 –3 –45 –3 –48 –13 –55 –13 –58 –23
        –33 –8 –39 –9 –43 –18 –49 –19 –53 –28
                           
120 180 –25 0 +21 +3 +28 +3 +33 +15 +40 +15 +45 +27
        –46 –3 –53 –3 –58 –15 –65 –15 –70 –27
        –40 –9 –46 –10 –52 –21 –58 –22 –64 –33
                           
180 250 –30 0 +24 +4 +33 +4 +37 +17 +46 +17 +51 +31
        –54 –4 –63 –4 –67 –17 –76 –17 –81 –31
        –48 –10 –55 –12 –61 –23 –68 –25 –75 –37
                           
250 315 –35 0 +27 +4 +36 +4 +43 +20 +52 +20 +57 +34
        –62 –4 –71 –4 –78 –20 –87 –20 –92 –34
        –54 –12 –62 –13 –70 –28 –78 –29 –84 –42
                           
315 400 –40 0 +29 +4 +40 +4 +46 +21 +57 +21 +62 +37
        –69 –4 –80 –4 –86 –21 –97 –21 –102 –37
        –61 –12 –69 –15 –78 –29 –86 –32 –94 –45
                           
400 500 –45 0 +32 +5 +45 +5 +50 +23 +63 +23 +67 +40
        –77 –5 –90 –5 –95 –23 –108 –23 –112 –40
        –68 –14 –78 –17 –86 –32 –96 –35 –103 –49
                           
500 630 –50 0 +29 0 +44 0 +55 +26 +70 +26 +73 +44
        –78 0 –94 0 –105 –26 –120 –26 –122 –44
        –68 –10 –81 –13 –94 –36 –107 –39 –112 –54
                           
630 800 –75 0 +32 0 +50 0 +62 +30 +80 +30 +82 +50
        –107 0 –125 0 –137 –30 –155 –30 –157 –50
        –95 –12 –108 –17 –125 –42 –138 –47 –145 –62
                           
800 1 000 –100 0 +36 0 +56 0 +70 +34 +90 +34 +92 +56
        –136 0 –156 0 –170 –34 –190 –34 –192 –56
        –122 –14 –136 –20 –156 –48 –170 –54 –178 –70
                           
1 000 1 250 –125 0 +42 0 +66 0 +82 +40 +106 +40 +108 +66
        –167 0 –191 0 –207 –40 –231 –40 –233 –66
        –150 –17 –167 –24 –190 –57 –207 –64 –216 –83
                           
1 250 1 600 –160 0 +50 0 +78 0 +98 +48 +126 +48 +128 +78
        –210 0 –238 0 –258 –48 –286 –48 –288 –78
        –189 –21 –208 –30 –237 –69 –256 –78 –267 –99
                           
1 600 2 000 –200 0 +60 0 +92 0 +118 +58 +150 +58 +152 +92
        –260 0 –292 0 –318 –58 –350 –58 –352 –92
        –235 –25 –257 –35 –293 –83 –315 –93 –327 –117


Shaft
Nominal diameter
Bearing
Bore diameter tolerance
Shaft diameter deviations, resultant fits1)
Tolerance classes
d tΔdmp n6 p6 p7 r6 r7
    Deviations (shaft diameter)
    Theoretical interference (–)/clearance (+)
over incl. low high Probable interference (–)
mm µm µm
                           
50 80 –15 0 +39 +20 +51 +32 +62 +32
        –54 –20 –66 –32 –77 –32
        –50 –24 –62 –36 –72 –38
                           
80 100 –20 0 +45 +23 +59 +37 +72 +37 +73 +51 +86 +51
        –65 –23 –79 –37 –92 –37 –93 –51 –106 –51
        –59 –29 –73 –43 –85 –44 –87 –57 –99 –58
                           
100 120 –20 0 +45 +23 +59 +37 +72 +37 +76 +54 +89 +54
        –65 –23 –79 –37 –92 –37 –96 –54 –109 –54
        –59 –29 –73 –43 –85 –44 –90 –60 –102 –61
                           
120 140 –25 0 +52 +27 +68 +43 +83 +43 +88 +63 +103 +63
        –77 –27 –93 –43 –108 –43 –113 –63 –128 –63
        –70 –34 –86 –50 –100 –51 –106 –70 –120 –71
                           
140 160 –25 0 +52 +27 +68 +43 +83 +43 +90 +65 +105 +65
        –77 –27 –93 –43 –108 –43 –115 –65 –130 –65
        –70 –34 –86 –50 –100 –51 –108 –72 –122 –73
                           
160 180 –25 0 +52 +27 +68 +43 +83 +43 +93 +68 +108 +68
        –77 –27 –93 –43 –108 –43 –118 –68 –133 –68
        –70 –34 –86 –50 –100 –51 –111 –75 –125 –76
                           
180 200 –30 0 +60 +31 +79 +50 +96 +50 +106 +77 +123 +77
        –90 –31 –109 –50 –126 –50 –136 –77 –153 –77
        –82 –39 –101 –58 –116 –60 –128 –85 –143 –87
                           
200 225 –30 0 +60 +31 +79 +50 +96 +50 +109 +80 +126 +80
        –90 –31 –109 –50 –126 –50 –139 –80 –156    
        –82 –39 –101 –58 –116 –60 –131 –88 –146 –90
                           
225 250 –30 0 +60 +31 +79 +50 +96 +50 +113 +84 +130 +84
        –90 –31 –109 –50 –126 –50 –143 –84 –160 –84
        –82 –39 –101 –58 –116 –60 –135 –92 –150 –94
                           
250 280 –35 0 +66 +34 +88 +56 +108 +56 +126 +94 +146 +94
        –101 –34 –123 –56 –143 –56 –161 –94 –181 –94
        –92 –43 –114 –65 –131 –68 –152 –103 –169 –106
                           
280 315 –35 0 +66 +34 +88 +56 +108 +56 +130 +98 +150 +98
        –101 –34 –123 –56 –143 –56 –165 –98 –185 –98
        –92 –43 –114 –65 –131 –68 –156 –107 –173 –110
                           
315 355 –40 0 +73 +37 +98 +62 +119 +62 +144 +108 +165 +108
        –113 –37 –138 –62 –159 –62 –184 –108 –205 –108
        –102 –48 –127 –73 –146 –75 –173 –119 –192 –121
                           
355 400 –40 0 +73 +37 +98 +62 +119 +62 +150 +114 +171 +114
        –113 –37 –138 –62 –159 –62 –190 –114 –211 –114
        –102 –48 –127 –73 –146 –75 –179 –125 –198 –127
                           
400 450 –45 0 +80 +40 +108 +68 +131 +68 +166 +126 +189 +126
        –125 –40 –153 –68 –176 –68 –211 –126 –234 –126
        –113 –52 –141 –80 –161 –83 –199 –138 –219 –141
                           
450 500 –45 0 +80 +40 +108 +68 +131 +68 +172 +132 +195 +132
        –125 –40 –153 –68 –176 –68 –217 –132 –240 –132
        –113 –52 –141 –80 –161 –83 –205 –144 –225 –147
                           
500 560 –50 0 +88 +44 +122 +78 +148 +78 +194 +150 +220 +150
        –138 –44 –172 –78 –198 –78 –244 –150 –270 –150
        –125 –57 –159 –91 –182 –94 –231 –163 –254 –166
                           
560 630 –50 0 +88 +44 +122 +78 +148 +78 +199 +155 +225 +155
        –138 –44 –172 –78 –198 –78 –249 –155 –275 –155
        –125 –57 –159 –91 –182 –94 –236 –168 –259 –171
                           
630 710 –75 0 +100 +50 +138 +88 +168 +88 +225 +175 +255 +175
        –175 –50 –213 –88 –243 –88 –300 –175 –330 –175
        –158 –67 –196 –105 –221 –110 –283 –192 –308 –197
                           
710 800 –75 0 +100 +50 +138 +88 +168 +88 +235 +185 +265 +185
        –175 –50 –213 –88 –243 –88 –310 –185 –340 –185
        –158 –67 –196 –105 –221 –110 –293 –202 –318 –207
                           
800 900 –100 0 +112 +56 +156 +100 +190 +100 +266 +210 +300 +210
        –212 –56 –256 –100 –290 –100 –366 –210 –400 –210
        –192 –76 –236 –120 –263 –127 –346 –230 –373 –237
                           
900 1 000 –100 0 +112 +56 +156 +100 +190 +100 +276 +220 +310 +220
        –212 –56 –256 –100 –290 –100 –376 –220 –410 –220
        –192 –76 –236 –120 –263 –127 –356 –240 –383 –247
                           
1 000 1 120 –125 0 +132 +66 +186 +120 +225 +120 +316 +250 +355 +250
        –257 –66 –311 –120 –350 –120 –441 –250 –480 –250
        –233 –90 –287 –144 –317 –153 –417 –274 –447 –283
                           
1 120 1 250 –125 0 +132 +66 +186 +120 +225 +120 +326 +260 +365 +260
        –257 –66 –311 –120 –350 –120 –451 –260 –490 –260
        –233 –90 –287 –144 –317 –153 –427 –284 –457 –293
                           
1 250 1 400 –160 0 +156 +78 +218 +140 +265 +140 +378 +300 +425 +300
        –316 –78 –378 –140 –425 –140 –538 –300 –585 –300
        –286 –108 –348 –170 –385 –180 –508 –330 –545 –340
                           
1 400 1 600 –160 0 +156 +78 +218 +140 +265 +140 +408 +330 +455 +330
        –316 –78 –378 –140 –425 –140 –568 –330 –615 –330
        –286 –108 –348 –170 –385 –180 –538 –360 –575 –370
                           
1 600 1 800 –200 0 +184 +92 +262 +170 +320 +170 +462 +370 +520 +370
        –384 –92 –462 –170 –520 –170 –662 –370 –720 –370
        –349 –127 –427 –205 –470 –220 –627 –405 –670 –420
                           
1 800 2 000 –200 0 +184 +92 +262 +170 +320 +170 +492 +400 +550 +400
        –384 –92 –462 –170 –520 –170 –692 –400 –750 –400
        –349 –127 –427 –205 –470 –220 –657 –435 –700 –450


Shaft
Nominal diameter
Bearing
Bore diameter tolerance
Shaft diameter deviations, resultant fits
Tolerance classes
d tΔdmp r6+IT6 r7+IT7
    Deviations (shaft diameter)
    Theoretical interference (–)
over incl. low high Probable interference (–)
mm µm µm
315 355 –40 0 +180 +144 +222 +165
        –220 –144 –262 –165
        –209 –155 –248 –179
               
355 400 –40 0 +186 +150 +228 +171
        –226 –150 –268 –171
        –215 –161 –254 –185
               
400 450 –45 0 +206 +166 +252 +189
        –251 –166 –297 –189
        –239 –178 –282 –204
               
450 500 –45 0 +212 +172 +258 +195
        –257 –172 –303 –195
        –245 –184 –288 –210
               
500 560 –50 0 +238 +194 +290 +220
        –288 –194 –340 –220
        –274 –208 –323 –237
               
560 630 –50 0 +243 +199 +295 +225
        –293 –199 –345 –225
        –279 –213 –328 –242
               
630 710 –75 0 +275 +225 +335 +255
        –350 –225 –410 –255
        –333 –242 –387 –278
               
710 800 –75 0 +285 +235 +345 +265
        –360 –235 –420 –265
        –343 –252 –397 –288
               
800 900 –100 0 +322 +266 +390 +300
        –422 –266 –490 –300
        –401 –287 –462 –328
               
900 1 000 –100 0 +332 +276 +400 +310
        –432 –276 –500 –310
        –411 –297 –472 –338
               
1 000 1 120 –125 +382 +316 +460 +355
        –507 –316 –585 –355
        –482 –341 –552 –388
               
1 120 1 250 –125 0 +392 +326 +470 +365
        –517 –326 –595 –365
        –492 –351 –562 –398
               
1 250 1 400 –160 0 +456 +378 +550 +425
        –616 –378 –710 –425
        –586 –408 –669 –466
               
1 400 1 600 –160 0 +486 +408 +580 +455
        –646 –408 –740 –455
        –616 –438 –699 –496
               
1 600 1 800 –200 0 +554 +462 +670 +520
        –754 –462 –870 –520
        –718 –498 –820 –570
               
1 800 2 000 –200 0 +584 +492 +700 +550
        –784 –492 –900 –550
        –748 –528 –850 –600

The appropriate values for housing seats are listed for the following tolerance classes:

Housing
Nominal 
bore diameter
Bearing
Outside diameter 
tolerance
Housing bore diameter deviations, resultant fits
Tolerance classes
D tΔDmp F7 G6 G7 H5 H6
    Deviations (housing bore diameter)
    Theoretical clearance (+)
over incl. low high Probable clearance (+)
mm µm µm
                           
6 10 0 –8 +13 +28 +5 +14 +5 +20 0 +6 0 +9
        +13 +36 +5 +22 +5 +28 0 +14 0 +17
        +16 +33 +7 +20 +8 +25 +2 +12 +2 +15
                           
10 18 0 –8 +16 +34 +6 +17 +6 +24 0 +8 0 +11
        +16 +42 +6 +25 +6 +32 0 +16 0 +19
        +19 +39 +8 +23 +9 +29 +2 +14 +2 +17
                           
18 30 0 –9 +20 +41 +7 +20 +7 +28 0 +9 +0 +13
        +20 +50 +7 +29 +7 +37 0 +18 0 +22
        +23 +47 +10 +26 +10 +34 +2 +16 +3 +19
                           
30 50 0 –11 +25 +50 +9 +25 +9 +34 0 +11 0 +16
        +25 +61 +9 +36 +9 +45 0 +22 0 +27
        +29 +57 +12 +33 +13 +41 +3 +19 +3 +24
                           
50 80 0 –13 +30 +60 +10 +29 +10 +40 0 +13 0 +19
        +30 +73 +10 +42 +10 +53 0 +26 0 +32
        +35 +68 +14 +38 +15 +48 +3 +23 +4 +28
                           
80 120 0 –15 +36 +71 +12 +34 +12 +47 0 +15 0 +22
        +36 +86 +12 +49 +12 +62 0 +30 0 +37
        +41 +81 +17 +44 +17 +57 +4 +26 +5 +32
                           
120 150 0 –18 +43 +83 +14 +39 +14 +54 0 +18 0 +25
        +43 +101 +14 +57 +14 +72 0 +36 0 +43
        +50 +94 +20 +51 +21 +65 +5 +31 +6 +37
                           
150 180 0 –25 +43 +83 +14 +39 +14 +54 0 +18 0 +25
        +43 +108 +14 +64 +14 +79 0 +43 0 +50
        +51 +100 +21 +57 +22 +71 +6 +37 +7 +43
                           
180 250 0 –30 +50 +96 +15 +44 +15 +61 0 +20 0 +29
        +50 +126 +15 +74 +15 +91 0 +50 0 +59
        +60 +116 +23 +66 +25 +81 +6 +44 +8 +51
                           
250 315 0 –35 +56 +108 +17 +49 +17 +69 0 +23 0 +32
        +56 +143 +17 +84 +17 +104 0 +58 0 +67
        +68 +131 +26 +75 +29 +92 +8 +50 +9 +58
                           
315 400 0 –40 +62 +119 +18 +54 +18 +75 0 +25 0 +36
        +62 +159 +18 +94 +18 +115 0 +65 0 +76
        +75 +146 +29 +83 +31 +102 +8 +57 +11 +65
                           
400 500 0 –45 +68 +131 +20 +60 +20 +83 0 +27 0 +40
        +68 +176 +20 +105 +20 +128 0 +72 0 +85
        +83 +161 +32 +93 +35 +113 +9 +63 +12 +73
                           
500 630 0 –50 +76 +146 +22 +66 +22 +92 0 +28 0 +44
        +76 +196 +22 +116 +22 +142 0 +78 0 +94
        +92 +180 +35 +103 +38 +126 +10 +68 +13 +81
                           
630 800 0 –75 +80 +160 +24 +74 +24 +104 0 +32 0 +50
        +80 +235 +24 +149 +24 +179 0 +107 0 +125
        +102 +213 +41 +132 +46 +157 +12 +95 +17 +108
                           
800 1 000 0 –100 +86 +176 +26 +82 +26 +116 0 +36 0 +56
        +86 +276 +26 +182 +26 +216 0 +136 0 +156
        +113 +249 +46 +162 +53 +189 +14 +122 +20 +136
                           
1 000 1 250 0 –125 +98 +203 +28 +94 +28 +133 0 +42 0 +66
        +98 +328 +28 +219 +28 +258 0 +167 0 +191
        +131 +295 +52 +195 +61 +225 +17 +150 +24 +167
                           
1 250 1 600 0 –160 +110 +235 +30 +108 +30 +155 0 +50 0 +78
                           
        +150 +355 +60 +238 +70 +275 +21 +189 +30 +208
                           
1 600 2 000 0 –200 +120 +270 +32 +124 +32 +182 0 +60 0 +92
        +120 +470 +32 +324 +32 +382 0 +260 0 +292
        +170 +420 +67 +289 +82 +332 +25 +235 +35 +257
                           
2 000 2 500 0 –250 +130 +305 +34 +144 +34 +209 0 +70 0 +110
        +130 +555 +34 +394 +34 +459 0 +320 0 +360
        +189 +496 +77 +351 +93 +400 +30 +290 +43 +317


Housing
Nominal 
bore diameter
Bearing
Outside diameter 
tolerance
Housing bore diameter deviations, resultant fits1)
Tolerance classes
D tΔDmp H7Ⓔ H8Ⓔ H9Ⓔ H10Ⓔ J6Ⓔ
    Deviations (housing bore diameter)
    Theoretical interference (–)/clearance (+)
over incl. low high Probable interference (–)/clearance (+)
mm µm µm
                           
6 10 0 –8 0 +15 0 +22 0 +36 0 +58 –4 +5
        0 +23 0 +30 0 +44 0 +66 –4 +13
        +3 +20 +3 +27 +3 +41 +3 +63 –2 +11
                           
10 18 0 –8 0 +18 0 +27 0 +43 0 +70 –5 +6
        0 +26 0 +35 0 +51 0 +78 –5 +14
        +3 +23 +3 +32 +3 +48 +3 +75 –3 +12
                           
18 30 0 –9 0 +21 0 +33 0 +52 0 +84 –5 +8
        0 +30 0 +42 0 +61 0 +93 –5 +17
        +3 +27 +3 +39 +4 +57 +4 +89 –2 +14
                           
30 50 0 –11 0 +25 0 +39 0 +62 0 +100 –6 +10
        0 +36 0 +50 0 +73 0 +111 –6 +21
        +4 +32 +4 +46 +5 +68 +5 +106 –3 +18
                           
50 80 0 –13 0 +30 0 +46 0 +74 0 +120 –6 +13
        0 +43 0 +59 0 +87 0 +133 –6 +26
        +5 +38 +5 +54 +5 +82 +6 +127 –2 +22
                           
80 120 0 –15 0 +35 0 +54 0 +87 0 +140 –6 +16
        0 +50 0 +69 0 +102 0 +155 –6 +31
        +5 +45 +6 +63 +6 +96 +7 +148 –1 +26
                           
120 150 0 –18 0 +40 0 +63 0 +100 0 +160 –7 +18
        0 +58 0 +81 0 +118 0 +178 –7 +36
        +7 +51 +7 +74 +8 +110 +8 +170 –1 +30
                           
150 180 0 –25 0 +40 0 +63 0 +100 0 +160 –7 +18
        0 +65 0 +88 0 +125 0 +185 –7 +43
        +8 +57 +10 +78 +10 +115 +11 +174 0 +36
                           
180 250 0 –30 0 +46 0 +72 0 +115 0 +185 –7 +22
        0 +76 0 +102 0 +145 0 +215 –7 +52
        +10 +66 +12 +90 +13 +132 +13 +202 +1 +44
                           
250 315 0 –35 0 +52 0 +81 0 +130 0 +210 –7 +25
        0 +87 0 +116 0 +165 0 +245 –7 +60
        +12 +75 +13 +103 +15 +150 +16 +229 +2 +51
                           
315 400 0 –40 0 +57 0 +89 0 +140 0 +230 –7 +29
        0 +97 0 +129 0 +180 0 +270 –7 +69
        +13 +84 +15 +114 +17 +163 +18 +252 +4 +58
                           
400 500 0 –45 0 +63 0 +97 0 +155 0 +250 –7 +33
        0 +108 0 +142 0 +200 0 +295 –7 +78
        +15 +93 +17 +125 +19 +181 +20 +275 +5 +66
                           
500 630 0 –50 0 +70 0 +110 0 +175 0 +280
        0 +120 0 +160 0 +225 0 +330
        +16 +104 +19 +141 +21 +204 +22 +308
                           
630 800 0 –75 0 +80 0 +125 0 +200 0 +320
        0 +155 0 +200 0 +275 0 +395
        +22 +133 +27 +173 +30 +245 +33 +362
                           
800 1 000 0 –100 0 +90 0 +140 0 +230 0 +360
        0 +190 0 +240 0 +330 0 +460
        +27 +163 +33 +207 +39 +291 +43 +417
                           
1 000 1 250 0 –125 0 +105 0 +165 0 +260 0 +420
        0 +230 0 +290 0 +385 0 +545
        +33 +197 +41 +249 +48 +337 +53 +492
                           
1 250 1 600 0 –160 0 +125 0 +195 0 +310 0 +500
        0 +285 0 +355 0 +470 0 +660
        +40 +245 +51 +304 +60 +410 +67 +593
                           
1 600 2 000 0 –200 0 +150 0 +230 0 +370 0 +600
        0 +350 0 +430 0 +570 0 +800
        +50 +300 +62 +368 +74 +496 +83 +717
                           
2 000 2 500 0 –250 0 +175 0 +280 0 +440 0 +700
        0 +425 0 +530 0 +690 0 +950
        +59 +366 +77 +453 +91 +599 +103 +847


Housing
Nominal 
bore diameter
Bearing
Outside diameter 
tolerance
Housing bore diameter deviations, resultant fits
Tolerance classes
D tΔDmp J7 JS5 JS6 JS7 K5
    Deviations (housing bore diameter)
    Theoretical interference (–)/clearance (+)
over incl. low high Probable interference (–)/clearance (+)
mm µm µm
                           
6 10 0 –8 –7 +8 –3 +3 –4,5 +4,5 –7,5 +7,5 –5 +1
        –7 +16 –3 +11 –4,5 +12,5 –7,5 +15,5 –5 +9
        –4 +13 –1 +9 –3 +11 –5 +13 –3 +7
                           
10 18 0 –8 –8 +10 –4 +4 –5,5 +5,5 –9 +9 –6 +2
        –8 +18 –4 +12 –5,5 +13,5 –9 +17 –6 +10
        –5 +15 –2 +10 –3 +11 –6 +14 –4 +8
                           
18 30 0 –9 –9 +12 –4,5 +4,5 –6,5 +6,5 –10,5 +10,5 –8 +1
        –9 +21 –4,5 +13,5 –6,5 +15,5 –10,5 +19,5 –8 +10
        –6 +18 –2 +11 –4 +13 –7 +16 –6 +8
                           
30 50 0 –11 –11 +14 –5,5 +5,5 –8 +8 –12,5 +12,5 –9 +2
        –11 +25 –5,5 –8 +19 –12,5 +23,5 –9 +13
        –7 +21 –3 +14 –5 +16 –9 +20 –6 +10
                           
50 80 0 –13 –12 +18 –6,5 +6,5 –9,5 +9,5 –15 +15 –10 +3
        –12 +31 –6,5 +19,5 –9,5 +22,5 –15 +28 –10 +16
        –7 +26 –3 +16 –6 +19 –10 +23 –7 +13
                           
80 120 0 –15 –13 +22 –7,5 +7,5 –11 +11 –17,5 +17,5 –13 +2
        –13 +37 –7,5 +22,5 –11 +26 –17,5 +32,5 –13 +17
        –8 +32 –4 +19 –6 +21 –12 +27 –9 +13
                           
120 150 0 –18 –14 +26 –9 +9 –12,5 +12,5 –20 +20 –15 +3
        –14 +44 –9 +27 –12,5 +30,5 –20 +38 –15 +21
        –7 +37 –4 +22 –7 +25 –13 +31 –10 +16
                           
150 180 0 –25 –14 +26 –9 +9 –12,5 +12,5 –20 +20 –15 +3
        –14 +51 –9 +34 –12,5 +37,5 –20 +45 –15 x+28
        –6 +43 –3 +28 –6 +31 –12 +37 –9 +22
                           
180 250 0 –30 –16 +30 –10 +10 –14,5 +14,5 –23 +23 –18 +2
        –16 +60 –10 +40 –14,5 +44,5 –23 +53 –18 +32
        –6 +50 –4 +34 –6 +36 –13 +43 –12 +26
                           
250 315 0 –35 –16 +36 –11,5 +11,5 –16 +16 –26 +26 –20 +3
        –16 +71 –11,5 +46,5 –16 –51 –26 +61 –20 +38
        –4 +59 –4 +39 –7 +42 –14 +49 –12 +30
                           
315 400 0 –40 –18 +39 –12,5 +12,5 –18 +18 –28,5 +28,5 –22 +3
        –18 +79 –12,5 +52,5 –18 +58 –28,5 +68,5 –22 +43
        –5 +66 –4 +44 –7 +47 –15 +55 –14 +35
                           
400 500 0 –45 –20 +43 –13,5 +13,5 –20 +20 –31,5 +31,5 –25 +2
        –20 +88 –13,5 +58,5 –20 +65 –31,5 +76,5 –25 +47
        –5 +73 –4 +49 –8 +53 –17 +62 –16 +38
                           
500 630 0 –50 –14 +14 –22 +22 –35 +35
        –14 +64 –22 +72 –35 +85
        –4 +54 –9 +59 –19 +69
                           
630 800 0 –75 –16 +16 –25 +25 –40 +40
        –16 +91 –25 +100 –40 +115
        –4 +79 –8 +83 –18 +93
                           
800 1 000 0 –100 –18 +18 –28 +28 –45 +45
        –18 +118 –28 +128 –45 +145
        –4 +104 –8 +108 –18 +118
                           
1 000 1 250 0 –125 –21 +21 –33 +33 –52 +52
        –21 +146 –33 +158 –52 +177
        –4 +129 –9 +134 –20 +145
                           
1 250 1 600 0 –160 –25 +25 –39 +39 –62 +62
        –25 +185 –39 +199 –62 +222
        –4 +164 –9 +169 –22 +182
                           
1 600 2 000 0 –200 –30 +30 –46 +46 –75 +75
        –30 +230 –46 +246 –75 +275
        –5 +205 –11 +211 –25 +225
                           
2 000 2 500 0 –250 –35 +35 –55 +55 –87 +87
        –35 +285 –55 +305 –87 +337
        –5 +255 –12 +262 –28 +278


Housing
Nominal 
bore diameter
Bearing
Outside diameter 
tolerance
Housing bore diameter deviations, resultant fits
Tolerance classes
D tΔDmp K6 K7 M5 M6 M7
    Deviations (housing bore diameter)
    Theoretical interference (–)/clearance (+)
over incl. low high Probable interference (–)/clearance (+)
mm µm µm
                           
6 10 0 –8 –7 +2 –10 +5 –10 –4 –12 –3 –15 0
        –7 +10 –10 +13 –10 +4 –12 +5 –15 +8
        –5 +8 –7 +10 –8 +2 –10 +3 –12 +5
                           
10 18 0 –8 –9 +2 –12 +6 –12 –4 –15 –4 –18 0
        –9 +10 –12 +14 –12 +4 –15 +4 –18 +8
        –7 +8 –9 +11 –10 +2 –13 +2 –15 +5
                           
18 30 0 –9 –11 +2 –15 +6 –14 –4 –17 –4 –21 0
        –11 +11 –15 +15 –14 +4 –17 +5 –21 +9
        –8 +8 –12 +12 –12 +2 –14 +2 –18 +6
                           
30 50 0 –11 –13 +3 –18 +7 –16 –5 –20 –4 –25 0
        –13 +14 –18 +18 –16 +6 –20 +7 –25 +11
        –10 +11 –14 +14 –13 +3 –17 +4 –21 +7
                           
50 80 0 –13 –15 +4 –21 +9 –19 –6 –24 –5 –30 0
        –15 +17 –21 +22 –19 +7 –24 +8 –30 +13
        –11 +13 –16 +17 –16 +4 –20 +4 –25 +8
                           
80 120 0 –15 –18 +4 –25 +10 –23 –8 –28 –6 –35 0
        –18 +19 –25 +25 –23 +7 –28 +9 –35 +15
        –13 +14 –20 +20 –19 +3 –23 +4 –30 +10
                           
120 150 0 –18 –21 +4 –28 +12 –27 –9 –33 –8 –40 0
        –21 +22 –28 +30 –27 +9 –33 +10 –40 +18
        –15 +16 –21 +23 –22 +4 –27 +4 –33 +11
                           
150 180 0 –25 –21 +4 –28 +12 –27 –9 –33 –8 –40 0
        –21 +29 –28 +37 –27 +16 –33 +17 –40 +25
        –14 +22 –20 +29 –21 +10 –26 +10 –32 +17
                           
180 250 0 –30 –24 +5 –33 +13 –31 –11 –37 –8 –46 0
        –24 +35 –33 +43 –31 +19 –37 +22 –46 +30
        –16 +27 –23 +33 –25 +13 –29 +14 –36 +20
                           
250 315 0 –35 –27 +5 –36 +16 –36 –13 –41 –9 –52 0
        –27 +40 –36 +51 –36 +22 –41 +26 –52 +35
        –18 +31 –24 +39 –28 +14 –32 +17 –40 +23
                           
315 400 0 –40 –29 +7 –40 +17 –39 –14 –46 –10 –57 0
        –29 +47 –40 +57 –39 +26 –46 +30 –57 +40
        –18 +36 –27 +44 –31 +18 –35 +19 –44 +27
                           
400 500 0 –45 –32 +8 –45 +18 –43 –16 –50 –10 –63 0
        –32 +53 –45 +63 –43 +29 –50 +35 –63 +45
        –20 +41 –30 +48 –34 +20 –38 +23 –48 +30
                           
500 630 0 –50 –44 0 –70 0 –70 –26 –96 –26
        –44 +50 –70 +50 –70 +24 –96 +24
        –31 +37 –54 +34 –57 +11 –80 +8
                           
630 800 0 –75 –50 0 –80 0 –80 –30 –110 –30
        –50 +75 –80 +75 –80 +45 –110 +45
        –33 +58 –58 +53 –63 +28 –88 +23
                           
800 1 000 0 –100 –56 0 –90 0 –90 –34 –124 –34
        –56 +100 –90 +100 –90 +66 –124 +66
        –36 +80 –63 +73 –70 +46 –97 +39
                           
1 000 1 250 0 –125 –66 0 –105 0 –106 –40 –145 –40
        –66 +125 –105 +125 –106 +85 –145 +85
        –42 +101 –72 +92 –82 +61 –112 +52
                           
1 250 1 600 0 –160 –78 0 –125 0 –126 –48 –173 –48
        –78 +160 –125 +160 –126 +112 –173 +112
        –48 +130 –85 +120 –96 +82 –133 +72
                           
1 600 2 000 0 –200 –92 0 –150 0 –158 –58 –208 –58
        –92 +200 –150 +200 –150 +142 –208 +142
        –57 +165 –100 +150 –115 +107 –158 +92
                           
2 000 2 500 0 –250 –110 0 –175 0 –178 –68 –243 –68
        –110 +250 –175 +250 –178 +182 –243 +182
        –67 +207 –116 +191 –135 +139 –184 +123


Housing
Nominal 
bore diameter
Bearing
Outside diameter 
tolerance
Housing bore diameter deviations, resultant fits1)
Tolerance classes
D tΔDmp N6 N7 P6 P7
    Deviations (housing bore diameter)
    Theoretical interference (–)/clearance (+)
over incl. low high Probable interference (–)/clearance (+)
mm µm µm
                       
6 10 0 –8 –16 –7 –19 –4 –21 –12 –24 –9
        –16 +1 –19 +4 –21 –4 –24 –1
        –14 –1 –16 +1 –19 –6 –21 –4
                       
10 18 0 –8 –20 –9 –23 –5 –26 –15 –29 –11
        –20 –1 –23 +3 –26 –7 –29 –3
        –18 –3 –20 0 –24 –9 –26 –6
                       
18 30 0 –9 –24 –11 –28 –7 –31 –18 –35 –14
        –24 –2 –28 +2 –31 –9 –35 –5
        –21 –5 –25 –1 –28 –12 –32 –8
                       
30 50 0 –11 –28 –12 –33 –8 –37 –21 –42 –17
        –28 –1 –33 +3 –37 –10 –42 –6
        –25 –4 –29 –1 –34 –13 –38 –10
                       
50 80 0 –13 –33 –14 –39 –9 –45 –26 –51 –21
        –33 –1 –39 +4 –45 –13 –51 –8
        –29 –5 –34 –1 –41 –17 –46 –13
                       
80 120 0 –15 –38 –16 –45 –10 –52 –30 –59 –24
        –38 –1 –45 +5 –52 –15 –59 –9
        –33 –6 –40 0 –47 –20 –54 –14
                       
120 150 0 –18 –45 –20 –52 –12 –61 –36 –68 –28
        –45 –2 –52 +6 –61 –18 –68 –10
        –39 –8 –45 –1 –55 –24 –61 –17
                       
150 180 0 –25 –45 –20 –52 –12 –61 –36 –68 –28
        –45 +5 –52 +13 –61 –11 –68 –3
        –38 –2 –44 +5 –54 –18 –60 –11
                       
180 250 0 –30 –51 –22 –60 –14 –70 –41 –79 –33
        –51 +8 –60 +16 –70 –11 –79 –3
        –43 0 –50 +6 –62 –19 –69 –13
                       
250 315 0 –35 –57 –25 –66 –14 –79 –47 –88 –36
        –57 +10 –66 +21 –79 –12 –88 –1
        –48 +1 –54 +9 –70 –21 –76 –13
                       
315 400 0 –40 –62 –26 –73 –16 –87 –51 –98 –41
        –62 +14 –73 +24 –87 –11 –98 –1
        –51 +3 –60 +11 –76 –22 –85 –14
                       
400 500 0 –45 –67 –27 –80 –17 –95 –55 –108 –45
        –67 +18 –80 +28 –95 –10 –108 0
        –55 +6 –65 +13 –83 –22 –93 –15
                       
500 630 0 –50 –88 –44 –114 –44 –122 –78 –148 –78
        –88 +6 –114 +6 –122 –28 –148 –28
        –75 –7 –98 –10 –109 –41 –132 –44
                       
630 800 0 –75 –100 –50 –130 –50 –138 –88 –168 –88
        –100 +25 –130 +25 –138 –13 –168 –13
        –83 +8 –108 +3 –121 –30 –146 –35
                       
800 1 000 0 –100 –112 –56 –146 –56 –156 –100 –190 –100
        –112 +44 –146 +44 –156 0 –190 0
        –92 +24 –119 +17 –136 –20 –163 –27
                       
1 000 1 250 0 –125 –132 –66 –171 –66 –186 –120 –225 –120
        –132 +59 –171 +59 –186 +5 –225 +5
        –108 +35 –138 +26 –162 –19 –192 –28
                       
1 250 1 600 0 –160 –156 –78 –203 –78 –218 –140 –265 –140
        –156 +82 –203 +82 –218 +20 –265 +20
        –126 +52 –163 +42 –188 –10 –225 –20
                       
1 600 2 000 0 –200 –184 –92 –242 –92 –262 –170 –320 –170
        –184 +108 –242 +108 –262 +30 –320 +30
        –149 +73 –192 +58 –227 –5 –270 –20
                       
2 000 2 500 0 –250 –220 –110 –285 –110 –305 –195 –370 –195
        –220 +140 –285 +140 –305 +55 –370 +55
        –177 +97 –226 +81 –262 +12 –311 –4

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