Size:D20mm x L25mm , Bore:5mm to 8mm The elastic spacer is made of polyurethane, and the torque exceeds the traditional claw coupling by more than 2 times During transmission, it can realize zero backlash torque transmission torque under low torque state Plum blossom elastomer can resist oil and electrical insulation, operating temperature: -20℃~80℃ Excellent elastic effect to absorb vibration, eccentricity and deflection Item Type: 5mm x 8mm Shaft Coupler Outer Dia : 20mm Length : 25mm The plum blossom coupling is closely combined with the main body of the two half coupling with polyurethane plastic as the elastic element, and the main body is mainly made of alloy aluminum. It is applicable to servo system, spindle drive, lifting platform, machine tool drive and gearbox motor. Compact, no backlash, which can absorb vibration and compensate radial and angular deviation. It is mainly suitable for working places with frequent starting, forward and reverse rotation, medium-high speed, medium torq. Colour:silver Material:aluminum Package Contents: 2 x Plum coupling