Slewing ring gears and drive units for crane construction
Cranes of all types rely on precision slewing ring gears and drive units to deliver safe, controllable rotation of the superstructure. Overhead cranes, port cranes, ship cranes, and offshore lifting equipment all require slewing drives that can handle the dynamic loads involved in lifting and positioning heavy loads, while delivering the smooth and predictable motion that safe crane operation demands.
Slewing ring gears
We produce internal and external slewing ring gears for crane applications in a range of sizes and accuracy classes. Large internal slewing gears for port and offshore cranes are produced using our single index milling and generating processes, with finish grinding to the required tooth accuracy. All slewing ring gears are inspected and documented before delivery.
Drive pinions and gearboxes
Matching drive pinions and swing drive gearboxes are produced to mesh with the slewing ring, with tooth geometry and accuracy class matched to ensure optimum contact and load distribution. We can supply the slewing ring and pinion as a matched set, verified to mesh correctly before delivery.
Overhead crane drive components
Long travel and cross travel drives in overhead cranes require reliable gearboxes and wheel drive units that can handle the acceleration and braking loads of the bridge and crab. We produce drive components for overhead crane applications from single gears to complete drive assemblies, engineered to the duty class and load rating of the crane.