80 1-NO30 - RENOLD 1 Inch Pitch Premier Standard Link C53 Protorque Bearing This QJ217-MPA bearing is a

This QJ217-MPA bearing is a a four point contact bearings with a machined brass cage with the outer ring centred and a normal internal clearance

The Bearing's dimensions are 5x12x22mm

63 16 M Medium Series 80mm - Bore Size Solid Brass Cage Normal Radial Internal Clearance

MHT25 C4 R480 T1 H S2 Maintenance Free Standard Flange Type Top Mounting Linear Way Unit Four Carriages 480mm - Rail Length Light Preload High Accuracy Class S2 Specification

80 1-NO30 - RENOLD 1 Inch Pitch Premier Standard Link C53 Protorque Bearing This QJ217-MPA bearing is aDouble cranked links are available for most sizes and types of chain. The unit consists of an inner link (No. 4), with cranked links retained permanently in position by a riveted bearing pin. Screw operated extractors break chain by forcing the Renold end softened bearing pins out of the outer link plates. For other brands of chain, the rivet swell must first be ground away.