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


Bearing No. NJ344

Specification data (main dimensions, etc.)

d(mm)220
D(mm)460
B(mm)88
r(min.)(mm)5
r1(min.)(mm)5
Fw(mm)284
Ew(mm)-
Basic load ratings : Cr(kN)1490
Basic load ratings : C0r(kN)1570
Fatigue load limit : Cu(kN)176
Limiting speeds(Grease lub.)(min-1)1100
Limiting speeds(Oil lub.)(min-1)1500
sd1(mm)-
B1(mm)-
B2(mm)-

Mounting dimensions,weight (reference)

da(min.)(mm)- mm
db(min.)(mm)240 mm
db(max.)(mm)279 mm
dc(min.)(mm)- mm
dd(min.)(mm)- mm
Da(max.)(mm)440 mm
Db(max.)(mm)- mm
Db(min.)(mm)- mm
ra(max.)(mm)4 mm
rb(max.)(mm)4 mm
Mass(Refer.)(kg)79.0 kg
JTEKT

2026/06/30