• أسطواني أسطواني
  • أسطواني أسطواني

Description

Cylindrical roller bearings are available in a wide range of designs, series, variants and sizes. The main design differences are the number of roller rows and the inner/outer ring flanges as well as cage designs and materials.

The bearings can meet the challenges of applications faced with heavy radial loads and high speeds. Accommodating axial displacement (except for bearings with flanges on both the inner and outer rings), they offer high stiffness, low friction and long service life.



Dimension and Parameters

Bearing NO.
New :NJ221M
Old :42221
Boundary dimensions(mm)
d :105
D :190
B :36
r 1.2min :2.1
r3、4min :2.1
Fw :126.8
Ew :
Basic load ratings(kN)
Cr :210
Cor :290
Limiting speed(rpm)
Grease :3000
Oil :3600
Abutment and fillet dimensions(mm)
da min :
db min :121
Da max :179
Db max :
ra max :2
rb max :2
Weight (kg)
Refer :4.34