Before you specify a rotary ball spline, ask the question, “Should the rotary spline nut be riding on angular contact ball bearings or crossed roller bearings?” After ascertaining your application’s requirements – stroke length; velocity; applied load; mounting space; duty cycle; required life; dimensions; installation direction; environment and accuracy – you’re ready to factor in…

By Leslie Langnau, Managing Editor Tom Corey thought he had a better idea for the motion control marketplace. So in 1990, he founded his linear motion components distributorship, Specialty Motions, Inc., (SMI) in California. The market responded as he had foreseen, choosing the price, quality and performance users needed from his broad array of slide…

The NB rotary ball spline has a nut that rolls on the ball spline shaft making it capable of both linear and rotary motion and provides sub-millimeter accuracy every time. There is a lot of torque acting on a robotic arm. A ball spline’s forte is the transfer of torque. In addition, it can even…

NB Corporation presents a compact single axis actuator with a unique “U” shaped integrated slide guide and ball screw. The BG Actuator’s highly rigid structure may be one-end supported. The 4 ball circuits contained in its slide block deliver high load capacity, accuracy and rigidity. A useful 34 page brochure supplies all dimensions, drawings and…