Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 1986R/32

Specifications
(Boundary dimensions ...etc)

d(mm)25.400
D(mm)58.738
T(mm)19.050
B(mm)19.355
C(mm)15.080
r(min.)(mm)1.2
r1(min.)(mm)1.2
Basic load ratings : Cr(kN)60.8
Basic load ratings : C0r(kN)57.1
Fatigue load limit : Cu(kN)8.25
Limiting speeds(Grease lub.)(min-1)7000
Limiting speeds(Oil lub.)(min-1)9300
Load center spread : a(mm)13.1
Constant :e()0.33
Axial load factors : Y1()1.82
Axial load factors : Y0()1.00

Mounting dimensions

da(mm)32.5
db(mm)30.5
Da(mm)52.0
Db(mm)54.0
ra(max.)(mm)1.2
rb(max.)(mm)1.2

Refer.

(Refer.)Mass(kg) 0.267
JTEKT

2025/06/01