Polyurethane Spring Pad - Happy Pad

Polymer used

Thermosetting Polyurethane

Operation Temperature

-15ºC to 60ºC

Operational Atmosphere

Heavy/Dusty/Sandy/Corrosive/Salty

Operational Humidity

0 to 100%

Metal Parts Spec 

Steel IS: 1079 Gr.D

Shore A Hardness

70 to 80

Tensile Strength

250 Kg/cm2 Minimum.

Elongation at Break

300% Minimum.

Compression Set at 80°±1°C for 24 (+0, -2)

15% Max. 

Specific Gravity

1.25 Max.

Shear Bond Strength

500 PSI / 35.15 Kg/cm2

After Heat Ageing

Change in SH

±5

Change in TS

+10%, -15%

Change in EB

+10%, -20%

Change in Volume after Immersion in Lubrex-150 for 72 (+0, -2) Hrs at 100±1°C 

20% Max

Change in Volume after Immersion in Grease for 72 (+0, -2) Hrs at 100±1°C 

15% Max.

Compressive Load - Deflection Characteristics

Compressive load: 5 ton

Deflection: 0.5 to 0.8 mm