NSK’s patented Kl™ Lubrication Units incorporate porous synthetic resin which retains lubricating oil. The material allows the continuous release of fresh oil for greater lubricating performance. K1™ offers contamination protection to extend the life of NSK ball screws, linear guides and Moncarriers. K1™ also reduces the risk of mechanical failure and reduces reliance on employees to maintain equipment. An FDA approved version is also available for clean environments.