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NNU3068

Double Row Cylindrical Roller Bearings

NNU3068

  • Double Row Cylindrical Roller Bearings
  • Double Row Cylindrical Roller Bearings
Bearing NO.
Cylindrical bore :NNU3068
Tapered bore :-
Boundary dimensions(mm)
d :340
D :520
B/C :133
r 1.2min :5
r3.4min :5
Basic load ratings(kN)
Cr :1670
Cor :3300
Limiting speed(rpm)
Speed Ratings :1600
Abutment and fillet dimensions(mm)
da max :368
Da max :490
ra max :4
rb max :4
Weight (kg)
Refer :103

Cylindrical Roller Bearing Features

1. Roller and raceway for line contact or repair line contact, radial bearing capacity is large, suitable for bearing heavy loads and impact loads.

2. Small friction coefficient, suitable for high speed, limit speed close to deep groove ball bearings.

3. N type and nu type can move axially, can adapt to the change of the relative position of the shaft and the housing caused by thermal expansion or installation error, and can be used as a free end support.

4. The processing requirements for the shaft or seat hole are higher, and the relative deviation of the outer ring axis after the bearing installation should be strictly controlled to avoid contact stress concentration.

5. The inner ring or outer ring can be separated for easy installation and disassembly.