Bosch Rexroth R182121310 Runner Block Linear Bearing is a roller runner block designed to ride on a compatible Bosch Rexroth rail, forming a precise linear-motion carriage for automation and machine-tool applications. The unit is a size-25 block, with listed footprint dimensions of 25 × 48 × 91 mm, identifying it as part of Rexroth’s R1821 family for compact, high-precision installations. When paired with a matching Rexroth rail, it provides a dedicated, smooth-moving carriage suitable for demanding linear guide system setups across industrial equipment.
