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Nabtesco's Hollow Shaft RD-C Series Gear Head combines High Precision (less than 1 arc-min), High Torque / High Thrust Capacity (over 6,000 lbs.) and a Large Center Thru-Hole in a completely sealed and ready to mount package. The patented 2-stage design and integrated support bearings provide extreme rigidity, high shock-load and the ability to support heavy external loads. The RD-C is ideal for any application where high-end positioning performance is required.

The large thru-hole (up to 5") can accommodate cables, shafts, etc. to provide the most efficient and space saving design possible. The 2 sets of main integrated support bearings provide large thrust (over 6,000 lbs.) and moment capacities and negate the need for external support devices – reducing design time and installation costs. Several sizes are available with output torque to 138,768 in-lb; moment capacity to 347,179 in-lb and ratio's up to 253:1.