Bosch Rexroth R161942500 Linear Runner Block Lubrication Unit

The Bosch Rexroth R161942500 LUBRICATING UNIT 45 is a front lubrication accessory for Rexroth ball-runner blocks that delivers oil along the rail interface to support long travel and consistent performance in linear motion systems. The unit mounts on the front face of the Ball Runner Block and is shipped pre-filled with Mobil SHC 639 oil, ready for installation after the block's basic lubrication. An enclosed lubrication pin must be installed between the lubrication plate and the Ball Runner Block, and the lubrication port on the unit’s face can serve as a pass-through for grease when relubricating the runner block. This 45-series front lube unit is designed to minimize lubricant loss and extend service intervals in automated machinery that uses Bosch Rexroth linear guides, providing a reliable front-end oil supply to the block during extended travel. By supplementing the block’s lubrication scheme, it helps sustain smooth, controlled motion and reduces maintenance interventions in demanding applications.