This carriage guides linear motion along a matching profile rail using four rows of recirculating ball tracks, giving contact on all sides and even load distribution across the rolling elements. The KWVE15-B-S-V1-G4 is built as a narrow carriage, keeping the mounting width reduced while retaining the four-row ball arrangement. Net mass is 0.166 kg. The G4 accuracy class defines the running and dimensional tolerances of the carriage, making it suitable for applications where consistent positioning accuracy across multiple units is required. The narrow design allows fitting into installations with limited lateral space while still carrying load from all four ball rows. As with recirculating ball systems, correct lubrication and alignment with the rail are needed to maintain smooth travel and the specified accuracy over the carriage's service life.