R161982500 Front Lubrication Unit is a Bosch Rexroth Lubricating Unit 20 designed for front-face lubrication of Rexroth ball rail (linear guide) systems. Mounted at the front of the ball runner block, it delivers a controlled amount of lubricant to the guide block to reduce lubricant loss and simplify maintenance by eliminating the need for additional lubrication lines. The unit is pre-filled with Mobil SHC 639 oil and is intended to be mounted after the Ball Runner Block has been basic-lubricated. For size 20, the initial oil quantity is 2.00 cm3, and it is identified by Material Number R161982500.
