This carriage is the moving element of a recirculating ball linear guidance system, running on a matching profile rail and carrying load through four rows of recirculating balls. Design KWVE30-B-H-V2-G3 is built as a narrow, high carriage, giving it a taller cross-section relative to its width while keeping the mounting footprint compact. Net mass is 1.09 kg, and the unit is manufactured to accuracy class G3. The four-row ball arrangement allows the carriage to take up load from multiple directions, which is a direct result of the recirculating ball design rather than a single-row contact. Accuracy class G3 defines the permissible tolerances for running parallelism and height relative to the reference surfaces, so the carriage should be matched with rails and adjoining carriages of the same accuracy class to keep the guideway geometry consistent. The high, narrow body shape suits installations where mounting width is limited but additional carriage height is acceptable.