Unrestricted bellow +layer spring 

Item:FT 510

Effective diameter/mm: 510

Vertical deflection capacity/mm: ±30

Horizontal deflection capacity: ±120

Pressure at max load Mpa/t : 0.5/10.0

Max dimension/mm: 850

Design height/mm: 242

System weight/kg: 110

Vertical stiffness of layer spring/N.mm-1: about 4600 at 60kN.