Ratech 11001 Smart Sleeve Crush Sleeve- $9.99

Current Crush Sleeve design

• Purpose of the item is to maintain pressure between two tapered roller bearings located on a common shaft to prevent position change of the bearings and fastener during operation.
• During installation the bulge will compress as the bearing center distance is decreased thus applying thrust pressure to both bearings and fastener.
• The current industry design has three bending or compression points of the bulge area. (A)
• Installation characteristics are an initial high thrust pressure for approximately the first .010 of length change of the spacer then thrust pressure drops approximately 20%.
• Typical required fastener torque to compress the spacer is approximately 300-400 ft. lbs.
• The usable compression distance is .040-.060 in length.
• Cycle duty is poor.

New Patent Pending Smart Sleeve design

• The bulge area is restricted to two areas with the majority of the deformation taking place on the flat of the bulge. (B)
• Installation characteristics are a consistent thrust pressure for the entire length change of the spacer.
• Typical required fastener torque to compress the spacer is approximately half of the current design. (130-150 ft.lbs.)
• The usable compression distance is .095 in length.
• Cycle duty is better than a solid spacer and shim pack.