Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
>

Bearing No. 45291/21

Specifications
(Boundary dimensions ...etc)

d(mm)57.150
D(mm)104.775
T(mm)30.162
B(mm)30.958
C(mm)23.812
r(min.)(mm)6.4
r1(min.)(mm)0.8
Basic load ratings : Cr(kN)157
Basic load ratings : C0r(kN)165
Fatigue load limit : Cu(kN)25.6
Limiting speeds(Grease lub.)(min-1)3700
Limiting speeds(Oil lub.)(min-1)4900
Load center spread : a(mm)22.2
Constant :e()0.33
Axial load factors : Y1()1.80
Axial load factors : Y0()0.99

Mounting dimensions

da(mm)76.0
db(mm)65.0
Da(mm)95.0
Db(mm)99.0
ra(max.)(mm)6.4
rb(max.)(mm)0.8

Refer.

(Refer.)Mass(kg) 1.092
JTEKT

2025/05/14