Manufacturer: Schaeffler INA
Type: Needle Roller Bearing
Model: NA6904

Dimensions
Bore diameter d: 20 mm
Outer diameter D: 37 mm
Width B: 30 mm
Minimum chamfer dimension r_min: 0.3 mm
Basic load ratings:
Dynamic C_r: 40500 N
Static C_0r: 51000 N
Fatigue load limit C_ur: 9200 N
Limiting speed: 16900 rpm
Limiting speed for grease: 10100 rpm
Reference speed: 8900 rpm
Operating temperature:  -30 … +120 °C