General Description of Urethane Spring FOR HIGH LOAD Application Example Optimum for pad pressure of press tools Urethane spring USA and USX for press tools use polyester based cast For operation with single stage spring urethane elastomer which is heat resistant. It is excellent in repeated Shoulder Bolt compression. It also has high impact resilience, impact resistance, weather optimum product for pad pressure source of press tools. (1) Since material is hard and elastic, it is excellent in impact resistance and shows a strong performance as a spring. Physical Properties (2) Since it is excellent in oil resistance, weather resistance and aging resistance, the service life is long. Pressure Source Components resistance and load resistance. It is the (3) Additional cutting and grinding can be made with ease. (4) Shape is a thick wall round pipe and is easy to handle. Physical Property Values For operation with double stage spring Detailed Drawing of Radius Radius (Refer to the radius in the detailed drawing for non-machined surface.) Navy blue Tensile Strength Modulus Polyester Based Tensile Strength Impact Resilience Application Range Characteristic Value Deflection Rate Limit for Operation SPM Limit for Operation Ambient Temperature Limit for Operation Dimensional table (calculation table based on d1) Urethane Spring Stepped Bushing

rethane Spring HIGH LOAD AND COUNTERDORE HOLE TYPE USZLK(Type with Retainer) Copyright © Sankyo Oilless Industry, Inc. All Rights Reserved.

Urethane Spring LOAD - DEFLECTION DIAGRAMS USZLK Load - Deflection Diagram Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Pressure Source Components Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes

Urethane Spring LOAD - DEFLECTION DIAGRAMS USZLK Load - Deflection Diagram Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes Pressure Source Components Initial 10,000 Strokes 100,000 Strokes 300,000 Strokes