Page 37 - NSK_CAT_E1102m_A7-141

BEARING TOLERANCES

r (max.) or r1 (max.) Table 8. 9 Chamfer Dimension Limits (for Metric Design Bearings)

(Radial Direction) (Axial Direction) Table 8. 9. 1 Chamfer Dimension Limits for Radial Table 8. 9. 2 Chamfer Dimension Limits for Table 8. 9. 3 Chamfer Dimension Limits for Thrust Bearings
Tapered Roller Bearings
r (min.) or r (min.) or Bore Surface or Bearings (excluding Tapered
r1 (min.) r1 (min.) Outside Surface Units : mm
r (max.) or r1 (max.) Roller Bearings) Units : mm Units : mm
Reference
Permissible Permissible Chamfer Reference Permissible Nominal Bore or Permissible Chamfer Reference Permissible Chamfer
Chamfer Dimension for Chamfer Nominal Outside Dimension for Inner/ Permissible Chamfer Dimension for Shaft Corner Radius of
r (min.) or Dimension Nominal Bore Corner Dimension Corner Dimension for Shaft (or Central)/Housing Shaft or Housing
r1 (min.) for Inner/ Diameter Inner/Outer Rings Radius of for Inner/ Diameter (1) Outer Rings Radius of (or Central)/Housing
Shaft or Outer Shaft or Washers ra
Outer Rings d r (max.) or r1 (max.) Rings d or D r (max.) Washers r (max.) or r1 (max.)
Housing ra Housing ra max.
r (min.) or over incl. Radial Axial r (min.) over incl. Radial Axial r (min.) or r1 (min.)
r1 (min.) max. max.
-- Direction Direction Direction Direction Radial or Axial Direction
0.05 --
Side Face of Inner/ Ring 0.08 -- 0.1 0.2 0.05 0.15 - - 0.3 0.6 0.15 0.05 0.1 0.05
Outer Ring or 0.1 0.16 0.3 0.08 0.08 0.16 0.08
Central Washer 0.2 0.4 0.1 - 40 0.7 1.4 0.1 0.2 0.1
0.3 40 - 0.9 0.3
0.15 - - 0.3 0.6 0.15
0.2 - - 0.5 0.8 0.2 - 40 1.1 1.6
0.6 40 - 1.3
- 40 0.6 1 0.3 1.7 0.15 0.3 0.15
0.3 40 - 0.8 1 0.6 0.2 0.5 0.2
- 50 1.6 0.3 0.8 0.3
1 2
- 40 1 2 50 - 1.9
r : Chamfer Dimension of Inner/Outer Ring 0.6 40 - 1.3 2 0.6 2.5
r1 : Chamfer Dimension of Inner/Outer Ring (Front Side) 1
- - 120 2.3 0.6 1.5 0.6
or of Central Washer of Thrust Ball Bearings 3 1 2.2 1
50 1.5 3 1.5 120 250 2.8 1.1 2.7 1
1 50 - 1.9 3 1 3
250 - 3.5 1.5
3.5 4

Remarks The precise shape of chamfer surfaces has not - 120 2 3.5 - 120 2.8 4
been specified but its profile in the axial plane shall 4.5 2
1.1 - 2.5 4 1 5
not intersect an arc of radius r (min.) or r1 (min.) 120
2 120 250 3.5 5
touching the side face of an inner ring or central washer and 5.5 2
- 120 2.3 4 250 - 4 6 1.5 3.5 1.5
bore surface, or the side face of an outer ring and outside 3 5 242
1.5 - 1.5 5.5 2.1 4.5 2
surface. 120 6.5
- 120 3.5
2.5
- 80 3 4.5 2.5 120 250 4 7
7.5
2 80 220 3.5 5 2 250 - 4.5

220 - 3.8 6 - 120 4 3 5.5 2.5
4 6.5 3
- 280 4 6.5 2 3 120 250 4.5 584
2.1
280 - 4.5 7 250 400 5

- 100 400 - 5.5

2.5 100 280 3.8 6 2 - 120 5 7 6 10 5
4.5 6 7.5 12.5 6
280 - 5 7 120 250 5.5 7.5 9.5 15 8

43
250 400 6 8
- 280 5 8
3 280 - 5.5 8 2.5 400 - 6.5 8.5

4 - - 6.5 9 3 - 180 6.5 8 12 18 10
5 - - 8 10 4 5 180 - 7.5 9 4 15 21 12
19 25 15
6- - 10 13 5 6 - 180 7.5 10 5
7.5 - 6
9.5 - - 12.5 17 8 180 - 9 11

- 15 19 Note (1) Inner Rings are classified by d and Outer Rings
by D.
12 - - 18 24 10
15 - - 21 30 12
19 - - 25 38 15

Remarks For bearings with nominal widths less than

2mm, the value of r (max.) in the axial

direction is the same as that in the radial

direction.

A 78 A 79