Polyurethane Elastic SleeveIt Is A Cylindrical Elastic Connector Based On Polyurethane, Which Is Injection Molded. The Inner Wall Is Often Processed With Anti Slip Patterns Or Keyways, And The Outer Wall Is Smooth Or Stepped, Suitable For Gap Compensation And Power Transmission Of Different Shaft Diameters.

Its Core Function Is To Utilize The High Elasticity And Wear Resistance Of Polyurethane To Form A Flexible Connection Between The Shaft And The Hub, Transmit Torque Through Its Own Radial Compression Deformation, Compensate For Radial (≤ 0.5mm) And A Small Amount Of Axial (≤ 0.3mm) Offset, And Buffer The Impact Load During Start-up And Braking. The Material Hardness Can Be Adjusted According To Demand (Shore A50~90), With Better Oil Resistance Than Rubber Sleeves And A Low Friction Coefficient (0.15~0.25), Without The Need For Additional Lubrication.

The Working Temperature Range Is -30 ℃~90 ℃, And It Can Withstand 120 ℃ In The Short Term. The Compressive Strength Reaches 50~80MPa, And The Transmission Torque Range Is 10~2000N · M. It Is Suitable For Shaft Connection Of Small And Medium-sized Equipment Such As Motors, Pumps, And Reducers. Compared To Metal Sleeves, It Is Over 40% Lighter In Weight And Can Reduce Equipment Operating Noise; Compared To Rubber Sleeves, The Lifespan Is Extended By 2-3 Times And The Tear Resistance Is Better.

During Installation, It Is Necessary To Control The Interference Fit (usually 0.1~0.3mm) To Avoid Elastic Failure Caused By Tightness. Long Term Use Requires Checking For Cracks Or Permanent Deformation, Which Is A Transmission Accessory That Balances Elasticity, Wear Resistance, And Economy.

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