This carriage guides linear motion along a rail using a four-row recirculating ball arrangement, transferring load through the rolling elements in all directions. The high, narrow carriage design (KWVE15-B-H) provides a compact cross-section combined with increased rigidity from the four-row ball contact layout. Net mass is 0.26 kg, and the unit is manufactured to accuracy class G3. The four-row ball arrangement allows the carriage to carry loads acting from multiple directions on a single rail, which is a direct result of the recirculating ball design. Accuracy class G3 defines the dimensional and running tolerances of the carriage, relevant when matching it to the corresponding rail and when multiple carriages are used together on the same guideway. The narrow, high profile suits applications where overall width must be kept low while maintaining carriage height.