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


Bearing No. 33020JR

Specification data (main dimensions, etc.)

d(mm)100
D(mm)150
T(mm)39
B(mm)39
C(mm)32.5
r(min.)(mm)2
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)290
Basic load ratings : C0r(kN)397
Fatigue load limit : Cu(kN)59.0
Limiting speeds(Grease lub.)(min-1)2400
Limiting speeds(Oil lub.)(min-1)3200
Load center spread : a(mm)28.6
Constant e0.29
Axial load factors : Y12.09
Axial load factors : Y01.15

Mounting dimensions,weight (reference)

da(min.)(mm)110 mm
db(max.)(mm)108 mm
Da(max.)(mm)141 mm
da(min.)(mm)135 mm
db(min.)(mm)143 mm
Sa(min.)(mm)7 mm
Sb(min.)(mm)6.5 mm
ra(max.)(mm)2 mm
rb(max.)(mm)1.5 mm
Mass(Refer.)(kg)2.40 kg
JTEKT

2026/06/30