... , Hand Wheel, Inverter, Limited Switches, Linking Shaft, Coupling, Pillow Block Bearing, Counter, Bevel Gearbox, Swivel Plate and Trunnion Base. Worm Gear ... ) * Worm Shaft: heated treated steel C45 (optional: stainless steel) * Bearing: taper roll bearing * Housing: casting iron * Oil Sealing (optional: high/low temperature oil ...