Bosch Rexroth R165141320 is a carbon-steel ball rail runner block for Rexroth ball rail systems, designated as KWD-045-FNS-C1-H-1 (CS). It uses a four-row, recirculating ball bearing carriage to deliver high rigidity and precise, low-friction linear motion when paired with compatible KWD-045 rails. As part of Rexroth’s ball rail system, this block is designed for high-precision linear guidance in automation and machinery that require repeatable movement along a Rexroth rail. The R165141320 variant corresponds to the CS (carbon steel) build within the KWD-045 family.
