Overview and Features

* Compact as a result of a new lip-type seal, similar in design to the cross-section of the ball screw shaft, and a low-torque design is adopted to reduce rising in the ball screw temperature.

* The special raceway-type ball screw shaft improves seal performance and reduces the entry of contaminants into the ball screw nut.

* Standard specifications for NSK K1™ lubrication unit incorporate a high performance seal, achieving advanced dust-proofing performance and durability.

High Dust-Proofing Performance

* The new seal configuration reduces the contamination rate to less than 1/15 that of conventional standard seals.

Enhanced Durability

* High sealing performance enhances durability of the ball screw under highly contaminated conditions. The durability test with fine iron powder shows the high performance seal increases ball screw life more than four times that of standard seals.