Plastic ball bearing featuring a polyacetal (POM) outer race, and steel inner race. Its main applications are: office furniture, furniture, vending machines, and refrigerators. There are 3 different types of D-Series Bearings, each serving a different use of application: Hole, Screw, and Riveting bearings. In addition, there are 6 different types of outer housing shapes, which can be seen below. Dimensions range from φ9 to φ48, and load capacity ranges from 2kgf (4.40 lb) to 20kgf (44.0lb).