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


Bearing No. 32221JR

Specification data (main dimensions, etc.)

d(mm)105
D(mm)190
T(mm)53
B(mm)50
C(mm)43
r(min.)(mm)3
r1(min.)(mm)2.5
Basic load ratings : Cr(kN)490
Basic load ratings : C0r(kN)567
Fatigue load limit : Cu(kN)73.0
Limiting speeds(Grease lub.)(min-1)2000
Limiting speeds(Oil lub.)(min-1)2700
Load center spread : a(mm)44.8
Constant e0.42
Axial load factors : Y11.43
Axial load factors : Y00.79

Mounting dimensions,weight (reference)

da(min.)(mm)119 mm
db(max.)(mm)120 mm
Da(max.)(mm)178 mm
da(min.)(mm)161 mm
db(min.)(mm)180 mm
Sa(min.)(mm)6 mm
Sb(min.)(mm)10 mm
ra(max.)(mm)2.5 mm
rb(max.)(mm)2 mm
Mass(Refer.)(kg)6.37 kg
JTEKT

2026/07/18