SKF radial spherical plain bearings tolerances

The dimensional tolerances for metric radial SKF spherical plain bearings requiring maintenance in the GE, GEG, GEH and GEM series are listed as below:

Inner ring GE, GEH and GEM series GEG series
d Δdmp ΔBs Δdmp ΔBs
over incl. high  low high  low high low  high low
mm μm   μm   μm   μm  
- 6 0 -8 -120  +12 
6 10 0 -8 -120  +15 
10 18 0 -8 -120  +18  -180 
18 30 0 -10 -120  +21  -210 
30 50 0 -12 -120  +25  -250 
50 80 0 -15 -150  +30  -300 
80 120 0 -20 -200  +35  -350 
120 180 0 -25 -250  +40  -400 
180 250 0 -30 -300  +46  -460 
250 315 0 -35 -350  +52  -520 
315 400 0 -40 -400  +57  -570 
400 500 0 -45 -450  - -  
500 620 0 -50 -500  - -  
620 800 0 -75 -750  - -  
800 1 000 0 -100 -1 000  - -  
1 000 1 250 0 -125 -1 250  - -  
  • d: nominal bore diameter
  • Δdmp: deviation of the mean bore diameter from the nominal in a single plane
  • ΔBs: deviation of a single inner ring width from the nominal 
  • please refer to SKF bearing tolerances for more information.

The dimensional tolerances for inch SKF radial spherical plain bearings in the GEZ, GEZH and GEZM series are listed as below:

Inner ring  
d Δdmp ΔBs
over incl. high  low high low 
mm μm μm
2,540 19,050 0 -13 0 -130
19,050 31,750 0 -13 0 -130
31,750 50,800 0 -13 0 -130
50,800 76,200 0 -15 0 -130
76,200 82,550 0 -20 0 -130
82,550 120,650 0 -20 0 -130
120,650 152,400 0 -25 0 -130

Outer ring tolerances apply to conditions before fracture and surface treatment. Accordingly, inner ring tolerances apply to rings before surface treatment.

Outer ring 
(all series) 
D ΔDmp ΔCs
over incl. high low high low
mm μm μm
6 18 0 -8 0 -240
18 30 0 -9 0 -240
30 50 0 -11 0 -240
50 80 0 -13 0 -300
80 120 0 -15 0 -400
120 150 0 -18 0 -500
150 180 0 -25 0 -500
180 250 0 -30 0 -600
250 315 0 -35 0 -700
315 400 0 -40 0 -800
400 500 0 -45 0 -900
500 630 0 -50 0 -1 000
630 800 0 -75 0 -1 100
800 1 000 0 -100 0 -1 200
1 000 1 250 0 -125 0 -1 300
1 250 1 600 0 -160 0 -1 600
1 600 2 000 0 -200 0 -2 000
  • D: nominal outer diameter 
  • ΔDmp: deviation of the mean outer diameter from the nominal in a single plane
  • ΔCs: deviation of a single outer ring width from the nominal

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