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


Bearing No. L21549/11

Specification data (main 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 :e0.32
Axial load factors : Y11.88
Axial load factors : Y01.04

Mounting dimensions,weight (reference)

da(mm)21.5 mm
db(mm)19.5 mm
Da(mm)29.0 mm
Db(mm)32.5 mm
ra(max.)(mm)1.2 mm
rb(max.)(mm)1.2 mm
Mass(Refer.)(kg)0.049 kg
JTEKT

2026/07/22