FAG spindle bearings accuracy, tolerance

The main dimensions of the FAG spindle bearings conform to DIN 628-1. The dimensional tolerances of the bearings correspond to tolerance class P4, the running tolerances correspond to tolerance class P2 to DIN 620-2.

The actual value codes for the bore and outside diameter as well as the nominal value deviation for the bearing width are indicated on the end faces of the inner and outer rings as well as on the packaging, where they are stated in the sequence “bore/outside diameter/bearing width”.

Inner ring tolerance

Bore Bore deviation Width deviation Width variation Radial runout Axial runout
d
mm
Δdmp
μm
ΔBs
μm
VBs
μm
Kia
μm
Sd
μm
Sia
μm
over incl.
- 10 0 –4 0 –100 1,5 1,5 1,5 1,5
10 18 0 –4 0 –100 1,5 1,5 1,5 1,5
18 30 0 –5 0 –120 1,5 2,5 1,5 2,5
30 50 0 –6 0 –120 1,5 2,5 1,5 2,5
50 80 0 –7 0 –150 1,5 2,5 1,5 2,5
80 120 0 –8 0 –200 2,5 2,5 2,5 2,5
120 150 0 –10 0 –250 2,5 2,5 2,5 2,5
150 180 0 –10 0 –250 4 3 4 5
180 250 0 –12 0 –300 5 4 5 5

Outer ring tolerance

Outside diameter Outside diameter deviation Width variation Radial runout Axial runout
D
mm
ΔDmp
μm
VCs
μm
Kea
μm
SD
μm
Sea
μm
over incl.
18 30 0 –5 1,5 2,5 1,5 2,5
30 50 0 –6 1,5 2,5 1,5 2,5
50 80 0 –7 1,5 3 1,5 4
80 120 0 –8 2,5 4 2,5 5
120 150 0 –9 2,5 4 2,5 5
150 180 0 –10 2,5 5 2,5 5
180 250 0 –11 4 7 4 7
250 315 0 –13 5 7 5 7
315 400 0 –15 7 8 7 8

The width deviation ΔCs is identical to ΔBs of the corresponding inner ring.

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