Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. L21549/11

Specifications
(Boundary dimensions ...etc)

d(mm)15.875
D(mm)34.988
T(mm)10.998
B(mm)10.998
C(mm)8.712
r(min.)(mm)1.2
r1(min.)(mm)1.2
Basic load ratings : Cr(kN)18.1
Basic load ratings : C0r(kN)14.3
Fatigue load limit : Cu(kN)1.90
Limiting speeds(Grease lub.)(min-1)12000
Limiting speeds(Oil lub.)(min-1)16000
Load center spread : a(mm)7.6
Constant :e()0.32
Axial load factors : Y1()1.88
Axial load factors : Y0()1.04

Mounting dimensions

da(mm)21.5
db(mm)19.5
Da(mm)29.0
Db(mm)32.5
ra(max.)(mm)1.2
rb(max.)(mm)1.2

Refer.

(Refer.)Mass(kg) 0.049
JTEKT

2025/06/01