pressed steel pulleys are designed to make a complete,
economical, self contained unit for either flat or "V"
side of belt. They are furnished with a single-row,
radial-type, highest quality precision ground,
pre-lubricated ball bearing (made of 52100 bearing
steel) with contact-type seals to insure positive
retention of lubricant and full protection against dirt,
dust or foreign matter. These bearings contain a 60%
fill of high temperature grease, no re-lubrication
required. The ball bearing inner ring is extended on
both sides to provide clearance for abutting parts and
greater support on the shaft. A compression ring (USA
Patent No. 4518372) is compressed between the center O.D.
of bearing and center I.D. of pulley bearing pocket to
assure a firm reliable fit of pulleys to bearing. This
helps distribute loads from the pulley more evenly to
the outer bearing race resulting in minimum distortion
of bearing O.D. Our tests have proven this method of
bearing installation to give longer and more reliable
bearing life. With little or no alterations, these belt
pulleys can be adapted to new designs or to existing
Applications for Idler Pulley Units
Accurately bore sized for easy, quick mounting on
standard 1/2" or 5/8" bolts (1/2" bore removable
sleeve std. in all pulleys) 3/8" sleeve is available
are riveted for strength and durability- No spot
welding is used.
smoothly rolled out edges which eliminate belt
chafing and scuffing
Holes" on the rivet circle allow water drainage when
the pulley is mounted in a horizontal position.