Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 438/432A

Specifications
(Boundary dimensions ...etc)

d(mm)44.450
D(mm)95.250
T(mm)27.783
B(mm)29.901
C(mm)22.225
r(min.)(mm)3.6
r1(min.)(mm)0.8
Basic load ratings : Cr(kN)129
Basic load ratings : C0r(kN)122
Fatigue load limit : Cu(kN)18.8
Limiting speeds(Grease lub.)(min-1)4500
Limiting speeds(Oil lub.)(min-1)5900
Load center spread : a(mm)18.4
Constant :e()0.28
Axial load factors : Y1()2.11
Axial load factors : Y0()1.16

Mounting dimensions

da(mm)57.0
db(mm)51.0
Da(mm)84.0
Db(mm)87.0
ra(max.)(mm)3.6
rb(max.)(mm)0.8

Refer.

(Refer.)Mass(kg) 0.93
JTEKT

2025/06/01