BM bimetal bushes/Trunnion bushings are composed of two metal strips, in two different materials; the first is normally in steel, the second is normally constitcuted by an alloy containing copper, which when coupled with the steel strip acts as an internal covering. Furthermore,  grooves and grease dots are provided to retain lubricating material and thus reducing extra wear-tear and providing longer life in abnormal working environments.

Bi-metal bushes in laminated spring and trunnion are designed to withstand impacts,vibratory loads as well as friction. GJ BUSH bi-metal trunnion bushing are capable to withstand these loads.