Bosch Rexroth R066804030 Linear Bearing Block

R066804030 KBSE-40-NR is Bosch Rexroth’s segmental linear bushing (KBSE series) designed to provide precise, low-friction linear guidance on a 40 mm shaft. This closed-type, corrosion-resistant segmental bushing ships without an integrated seal, with optional wiper seals available, and uses hardened segmental load-bearing plates and stainless-steel balls, plus a PA 11 ball retainer and retaining rings. The shaft diameter is 40 mm (d = 40) and the unit weighs about 0.184 kg, making it suitable for compact automation assemblies. It is not pre-lubricated at the factory; grease should be applied before initial use. Installation is typically performed with an arbor press to seat the bushing correctly and to ensure the load-bearing plate remains properly covered during mounting. The NR (corrosion-resistant) variant is intended for general applications where moisture or chemical exposure is a concern, with stainless construction supporting use in environments such as medical, chemical, and food industries.