Our Edge is Our Product; Chalmers rubber spring rear suspension for single, tandem and tri axle trucks and trailers. the Chalmers suspensions are proven to be safer, smoother profitable in all applications. Ideally suited for municipal trucks thru to heavy haul mining and exploration vehicles. Our single axles start at 23,000 lbs thru to 48,000 lbs. Tandem axle weight ratings range from 40K 130K lbs, Industrial Springs ...