Crane Bumper, Free Height: 3.32 in./84.3 mm Base Diameter: 3.62 in./91.9 mm Peak Force: 57,000 lbs./254,000 N – TecsPak crane bumpers are a proven, cost-effective choice for energy management systems with excellent resistance to chemicals and humidity. Crane bumpers have a unique dual-concept for the devices spring rate and are ideal for high load energy management systems. These bumpers are designed to meet the minimum requirements of existing industry standards OSHA and CMAA.