Koyo
FOR REFERENCE ONLY
  • Cylindrical roller bearings
  • Single-row
  • NU


Bearing No. NU205R

Specification data (main dimensions, etc.)

d(mm)25
D(mm)52
B(mm)15
r(min.)(mm)1
r1(min.)(mm)0.6
Fw(mm)31.5
Ew(mm)-
Basic load ratings : Cr(kN)36.7
Basic load ratings : C0r(kN)27.7
Fatigue load limit : Cu(kN)3.75
Limiting speeds(Grease lub.)(min-1)13000
Limiting speeds(Oil lub.)(min-1)15000
sd1(mm)-
B1(mm)-
B2(mm)-

Mounting dimensions,weight (reference)

da(min.)(mm)- mm
db(min.)(mm)29 mm
db(max.)(mm)31 mm
dc(min.)(mm)- mm
dd(min.)(mm)- mm
Da(max.)(mm)47 mm
Db(max.)(mm)- mm
Db(min.)(mm)- mm
ra(max.)(mm)1 mm
rb(max.)(mm)0.6 mm
Mass(Refer.)(kg)0.138 kg
JTEKT

2026/07/01