Gimbal or Universal Angular Expansion Joints

Gimbal bellows (or universal angular expansion joints) operate on a similar basis to hinged angular expansion joints, but they allow multi, rather than single plane angulation. Gimbal expansion joints are often used in pairs as part of a ‘2-pin’ system or in combination with a single hinged expansion joint bellows assembly as the third element of a ‘3-pin’ system by effectively converting relatively large amounts of axial movement in to relatively small amounts of angulation.