This carriage runs on a linear guideway rail using four rows of full-complement recirculating balls, allowing loads to be carried without a cage while maintaining smooth travel along the rail. The design is of the expanded type, designated with the B suffix, and net mass of the carriage is 0.725 kg. Accuracy class is G3. The full-complement ball arrangement in four rows gives the carriage a load-bearing profile that supports forces from multiple directions, distributing load evenly around the rail. The G3 accuracy class defines the dimensional and running tolerances of the carriage, making it suitable for applications where a standard, general-purpose accuracy grade is sufficient rather than a higher precision requirement. The expanded design (B suffix) affects the internal load distribution and rigidity of the carriage relative to the standard variant.