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The frictional resistance of the counter support nut is reduced to a minimum by a built-in thrust bearing
The INA NK25/20-XL is a high-precision needle roller bearing without inner ring
They fit on a variety of lock nuts with outer diameter(s) 52 - 55 mm
Grease 8200 rpm
Limiting speed 4 300 r/min
SPB400-3 400mm Pitch Diameter 3 Groove Tapered Bush V Pulley Sealed The frictional resistance of theV pulleys are manufactured from fine grain grey cast iron grade GG25 and are phosphated. Groove dimensions conform to ISO 4183 for both eccentricity of outside diameter to bore and groove side wobble tolerance. They are suitable for use with all wedge belts according to ISO 4184 and all classical V belts according to ISO 4184. Benefits Pulley groove specification conforms to ISO4183. Suitable for both classical and wedge belts. Larger pulleys,
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