The range of slewing drives offered by Top gear are being widely used in various applications like a drilling rigs, cranes, wind mill, stackers, loaders, excavators, where the application demands rotation of equipment @ 360 degree. The constructional feature of slew drive has got sturdy roller bearings to take care of the radial & axial loads on output shafts. The pinion gear which meshes with the slew ring have positive corrections to take care the proper meshing & life of slewing ring.