30311JR

Tapered roller bearings - Single-row - Metric series

Specifications
(Boundary dimensions ...etc)

d
55 mm
D
120 mm
T
31.5 mm
B
29 mm
C
25 mm
r(min.)
2.5 mm
r1(min.)
2 mm
Basic load ratings : Cr
187 kN
Basic load ratings : C0r
170 kN
Fatigue load limit : Cu
27.0 kN
Limiting speeds(Grease lub.)
3300 min-1
Limiting speeds(Oil lub.)
4500 min-1
Load center spread : a
25.5 mm
Constant e
0.35
Axial load factors : Y1
1.74
Axial load factors : Y0
0.96

Mounting dimensions

da(min.)
67 mm
db(max.)
71 mm
Da(max.)
108 mm
da(min.)
104 mm
db(min.)
111 mm
Sa(min.)
4 mm
Sb(min.)
6.5 mm
ra(max.)
2 mm
rb(max.)
2 mm

Refer.

(Refer.)Mass
1.65 kg

Technical calculation for this product.

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