Lubrication

To prevent foreign material from entering the spline nut and the lubricant from leaking, special synthetic resin seals with high wear resistance are available for the Ball Spline. Spline nuts with seals (UU seals for both ends and seals for one end) contain lithium soap-based grease No. 2. If using at high speed or with a long stroke, replenish grease of the same type through the greasing hole on the spline nut after running in. Afterward, replenish grease of the same type as necessary according to the service conditions. The greasing interval differs depending on the conditions. Normally, replenish the lubricant (or replace the product) roughly every 100 km of travel distance (six months to one year) as a rule of thumb. For a Ball Spline model type without a seal, apply grease to the interior of the spline nut or to the raceways of the spline shaft.