单排四点接触球式回转支撑由两个座圈组成，结构紧凑、重量轻，钢圈与圆弧滚道四点接触，能同时承受径向力、轴向力和倾覆力矩。回转式输送机、焊接操作机、中小型起重机和挖掘机等工程机械均可选用。
目前现货有：
131.50.3150.12 ；010.60.2240.12；132.45.2800.12；131.45.2800.04；012.60.2800.12；011.60.2240.12；011.60.2800.12；011.60.2500.12；011.60.2500.12；133.50.3050.03；132.50.3150.02；132.45.2240.04；021.50.2800.12；131.45.2800.04；011.60.2234.04；022.50.2800.12；012.60.2800.12；131.50.3150.04；011.75.3150.12；132.45.2530.04FB；
011.60.2500.12;010.40.900.12;011.60.2500.12;010.40.900.12;011.45.1600.12;011.45.1400.12;011.45.1250.12;111.25.560.12;011.60.2000.12；
QWA1800 50;1797/3230G2K；013.45.1800；012.60.2000.12；012.25.400.12；011.30.630；012.40.800；013.50.1405.04C;013.30.500.12; 013.40.1120.12;011.60.2500.12;012.30.500.12; XU080149RR;111.25.500.12;011.60.2000.12;132.50.3550.03FB;130.32.1000.04;012.30.560.12;X10079220;10298868;011.45.1600.12;012.45.1600.12;797/870K1；131.50.3550.03；792/1000G2K1；012.30.500.12；HSW50 1700;JW20.641;110.28.800;D1797/1000G2;010.30.630.12;011.20.210.12;013.20.200.12;131.25.1530.04;011.25.710.12;110.25.500.12;1797/2600G2.
