This bearing carries axial loads in one direction only, using a single set of balls guided by a steel sheet metal cage (JP). Overall height is 25.0 mm and the unit weighs 1.121 kg. The limiting speed reaches 3200 1/min, with a reference speed of 2600 1/min. Being a single-direction deep groove ball bearing, it must be paired with a radial bearing to locate the shaft, as it takes no radial load itself. The steel cage design suits moderate speed operation within the stated limits, and mounting should ensure the load acts consistently in the single supported direction to avoid ball-raceway separation. Dimensionally and constructionally interchangeable with SKF 51124, NSK 51124, and NTN 51124.