/wp-content/uploads/2025/Tapered-Roller-Bearings.jpg
Koyo 30228JR
(BRAND)：KOYO
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Specifications
(Boundary dimensions ...etc)
d
140 mm
D
250 mm
T
45.75 mm
B
42 mm
C
36 mm
r(min.)
4 mm
r1(min.)
3 mm
Basic load ratings : Cr
526 kN
Basic load ratings : C0r
570 kN
Fatigue load limit : Cu
71.8 kN
Limiting speeds(Grease lub.)
1500 min-1
Limiting speeds(Oil lub.)
1900 min-1
Load center spread : a
49.4 mm
Constant e
0.44
Axial load factors : Y1
1.38
Axial load factors : Y0
0.76
Mounting dimensions
da(min.)
158 mm
db(max.)
163 mm
Da(max.)
236 mm
da(min.)
219 mm
db(min.)
237 mm
Sa(min.)
9 mm
Sb(min.)
9.5 mm
ra(max.)
3 mm
rb(max.)
2.5 mm
Refer.
(Refer.)Mass
8.97 kg
