Two items that are front and center when designing a crane are safety and reliability. Made in America MagnaShear spring set, electric release, motor brakes utilizing Oil Shear Technology from Force Control Industries (Fairfield, OH) offer both. Years of maintenance free operation, no adjustment needed and high cycle rate capability provide peace of mind.
www.forcecontrol.com/products/brakes/motor-brakes/magna-shear-motor-brakes