Linear Bearing Ball Carriage, Carriage Height 25.5 mm, Carriage Length 49.5 mm, Carriage Width 63 mm, Carriage Material Steel Alloy, Roller Material Steel Alloy, Radial Load - Maximum 134 N, Axial Load - Maximum 134 N, Manufacturer Size 20, Dynamic Load Capacity 14,400 N, Requires Lubrication Lubricant Required, Carriage Type Ball, For Rail Width 20 mm, For Use With 500 Series Ball Rail, Static Load Capacity 31,400 N, Combined Carriage and Rail Height 30 mm, Series 500