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


Bearing No. 33011JR

Specification data (main dimensions, etc.)

d(mm)55
D(mm)90
T(mm)27
B(mm)27
C(mm)21
r(min.)(mm)1.5
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)121
Basic load ratings : C0r(kN)149
Fatigue load limit : Cu(kN)22.6
Limiting speeds(Grease lub.)(min-1)4100
Limiting speeds(Oil lub.)(min-1)5400
Load center spread : a(mm)19.3
Constant e0.31
Axial load factors : Y11.92
Axial load factors : Y01.06

Mounting dimensions,weight (reference)

da(min.)(mm)63.5 mm
db(max.)(mm)63 mm
Da(max.)(mm)81.5 mm
da(min.)(mm)81 mm
db(min.)(mm)86 mm
Sa(min.)(mm)5 mm
Sb(min.)(mm)6 mm
ra(max.)(mm)1.5 mm
rb(max.)(mm)1.5 mm
Mass(Refer.)(kg)0.672 kg
JTEKT

2026/07/01