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NK21/20 XL INA Needle Roller Bearing without Inner Ring 21x29x20mm
Dimensions - d (inside diameter) 21mm Dimensions - D (outside diameter) 29mm Dimensions - B (width) 20mm INA Needle roller bearing without inner ring 21mm inside x 29mm outside x 20mm width
Needle roller bearings with ribs:
The outer ring forms a self-retaining unit with the needle roller and cage assembly. These radially compact bearings with high load capacity are highly suitable for designs with limited radial space. The bearings are available with and without inner ring and in both sealed and open versions.
Bearings without an inner ring are the best solution for bearing arrangements where the shaft can be hardened and ground.
Needle roller bearings with an inner ring are used if the shaft is not configured as a rolling bearing raceway.
Dimensions:
Fw: 21mm
D: 29mm
C: 20mm
r min: 0.3mm
Basic dynamic load rating, radial: 19300 N
Basic static load rating, radial: 25500 N
Fatigue limit load, radial: 4450 N
Limiting speed: 19600 1/min
Reference speed: 11100 1/min
Mass: 35.2g
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