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The surface of the spherical arc pulley is smooth without burrs, round, firm and uniform, with good sealing, good operating performance, flexible sliding Spherical arc pulley has the function of supporting mechanical rotating bodies, reducing the friction coefficient during movement, running smoothly and with low noise Made of engineering plastic, durable, long service life, can reduce vibration and noise Material: POM polyformaldehyde + bearing steel Dimensions: Inner diameter 8MM, outer diameter 30MM, thickness 8.5MM; spherical radius r=5mm; load bearing: 87KG