SKF maintenance-free spherical plain bearings tolerances

The dimensional tolerances for metric maintenance- free radial spherical plain bearings are in accordance with ISO 12240-1:1998 and listed as below:

Dimensional tolerances for metric maintenance-free radial spherical plain bearings

Nominal diameter Inner ring Outer ring
d, D Δdmp ΔBs ΔDmp ΔCs
over incl. high low high low high low high low
mm μm μm μm μm
- 18 0 -8 0 -120 0 -8 0 -240
18 30 0 -10 0 -120 0 -9 0 -240
30 50 0 -12 0 -120 0 -11 0 -240
50 80 0 -15 0 -150 0 -13 0 -300
80 120 0 -20 0 -200 0 -15 0 -400
120 150 0 -25 0 -250 0 -18 0 -500
150 180 0 -25 0 -250 0 -25 0 -500
180 250 0 -30 0 -300 0 -30 0 -600
250 315 0 -35 0 -350 0 -35 0 -700
315 400 0 -40 0 -400 0 -40 0 -800
400 500 0 -45 0 -450 0 -45 0 -900
500 630 0 -50 0 -500 0 -50 0 -1 000
630 800 0 -75 0 -750 0 -75 0 -1 100
800 1 000 0 -100 0 -1 000 0 -100 0 -1 200
1 000 1 250 0 -125 0 -1 250 0 -125 0 -1 300
1 250 1 600 0 - - - 0 -160 0 -1 600
1 600 2 000 0 - - - 0 -200 0 -2 000

The dimensional tolerances for inch bearings in the GEZ series are in accordance with ANSI/ ABMA Std. 22.2-1988 and listed as below

Dimensional tolerances for inch bearings

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 - Dimensional tolerances for inch radial spherical plain bearings

Outer ring
D ΔDmp ΔCs
over incl. high low high low
mm μm μm
6,350 19,050 0 -13 0 -130
19,050 31,750 0 -13 0 -130
31,750 50,800 0 -13 0 -130
50,800 80,962 0 -15 0 -130
80,962 82,550 0 -20 0 -130
82,550 120,650 0 -20 0 -130
120,650 152,400 0 -25 0 -130
152,400 177,800 0 -25 0 -130
177,800 184,150 0 -30 0 -130
184,150 222,250 0 -30 0 -130

For more information, please refer to SKF bearing tolerances.

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