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Contributing to the extension of equipment lifespan and reduction of takt time.
The SBKH type ball screw with ball retainers is a ball screw that enables high load capacity and high-speed use (up to 92 m/min). It combines the high load performance of our HBN type high-load ball screw with ball retainers and the high-speed performance of the SBK type high-speed ball screw.
Achieved a DN value of 210,000 (realizing a maximum feed speed of 200 m/min).
The SBK type high-speed ball screw with ball retainers is a large lead ball screw designed to eliminate collisions and mutual friction between balls, thereby improving grease retention. As a result, it achieves low noise, high speed, and long-term maintenance-free operation. Furthermore, the ideal circulation structure that scoops the balls in the tangential direction (see Figure 2) enables high-speed use at a DN value of 210,000. (*DN value = ball center diameter × revolutions per minute)
An ideal circulation structure that scoops the ball in the tangential direction.
The SBK type ball screw with ball retainers eliminates collisions and mutual friction between balls and improves grease retention by incorporating ball retainers between the balls. As a result, it achieves low noise, low torque variation, and long-term maintenance-free operation. Furthermore, the ideal circulation structure that scoops the balls in the tangential direction enables high-speed use at a DN value of 160,000. (Note: DN value = ball center diameter × revolutions per minute) The preloading method adopts a phase difference between the two rolling grooves of the nut, resulting in a shorter and more compact overall length of the ball screw nut compared to the double nut type with spacer preloading.
Achieved a permissible DN value of 130,000 and improved the strength of the circulation section.
The SBN type high-speed ball screw with ball retainers eliminates collisions and mutual friction between the balls, and improves the retention of lubricants by installing ball retainers between the balls. This has resulted in reduced noise, excellent torque characteristics, and long-term maintenance-free operation.
