KSS MRB series ball screw C5 for auto-machinery

Dia 32mm pitch 32mm rolled thread ball screw CSNF3232, this KSS MRB series ball screw C5 for medical machinery, with large lead and low friction, attain the customer requirement, used in auto-machinery field.The external circulation is that the balls re-enter the circulation through the spiral groove or cannula on the outer surface of the nut and return to the screw and nut after the end of the circulation process. The return methods of the external circulation ball screw nut pair according to the ball circulation mainly include end cap type, intubation type and spiral groove type. Commonly used external circulation methods are end cap type; intubation type; spiral groove type. For the end cover type, a longitudinal hole is machined on the nut as a return passage for the balls. The cover plates at both ends of the nut are provided with return openings for the balls, from which the balls enter the return pipe to form a circulation. Intubation type, which uses elbows as return pipes, this structure has good manufacturability, but because the pipes protrude from the outside of the nut, the radial size is large. Spiral groove type, which mills a spiral groove on the outer circle of the nut, and drills through holes at both ends of the groove and is tangent to the threaded raceway to form a return channel. This structure is smaller than the intubation structure in radial size, but Manufacturing is more complicated. The outer circulation ball screw has a simple structure and manufacturing process and is widely used. The disadvantage is that it is difficult to smooth the seam of the raceway, which affects the stability of the ball raceway.