Page 604 - Rollingbearings

7 Needle roller bearings
Table 7
Mounting scheme − example
Needle roller and cage assembly: K 16x22x12
Housing bore diameter: 22H6� [mm], deviation 0/+13 μm
Shaft diameter: 16h5� [mm], deviation 0/−8 μm
Shaft Housing bore diameter
diameter
Deviation Deviation groups
group
0 to +3 +3 to +6 +6 to +9 +9 to +13
Needle roller Radial internal Needle roller Radial internal Needle roller Radial internal Needle roller Radial internal
gauge limits clearance gauge limits clearance gauge limits clearance gauge limits clearance

µm µm

0 to −3 −5/−7 18−24 −3/−5 17−24
−3 to −6 −5/−7 18−24 −3/−5 17−25 −2/−4 18−25
−4/−6
−6 to −8 −5/−7 18−25 −3/−5 17−24 −2/−4 18−25 0/−2 17−25
−6/−8 −4/−6 −3/−5 −1/−3

The mean value of the needle roller gauge should be used to calculate the internal clearance, e g –6 μm for the gauge –5 to –7 μm.

Table 8
Tolerances for drawn cup needle roller bearings

7 Bearing Outside Ring gauge Deviations from nominal Bearing Outside Ring gauge Deviations from nominal
Inside
Bore
inside diameter
Inside
inside diameter
Bore
diameter diameter diameter diameter diameter diameter
F w D (measured) U L F w D (measured) U L
mm mm µm mm mm µm
3 6,5 6,484 +24 +6 18 24 23,976 +34 +16
4 8 7,984 +28 +10 20 26 25,976 +41 +20
5 9 8,984 +28 +10 22 28 27,976 +41 +20
6 10 9,984 +28 +10 25 32 31,972 +41 +20
7 11 10,980 +31 +13 28 35 34,972 +41 +20
8 12 11,980 +31 +13 30 37 36,972 +41 +20
9 13 12,980 +31 +13 32 39 38,972 +50 +25
10 14 13,980 +31 +13 35 42 41,972 +50 +25
12 16 15,980 +34 +16 40 47 46,972 +50 +25
12 18 17,980 +34 +16 45 52 51,967 +50 +25
13 19 18,976 +34 +16 50 58 57,967 +50 +25
14 20 19,976 +34 +16 55 63 62,967 +60 +30
15 21 20,976 +34 +16 60 68 67,967 +60 +30
16 22 21,976 +34 +16
17 23 22,976 +34 +16

602