... general ball spiral poles prepared the standard support unit BK, BF type. Fixed support units by the side with ... the deep groove ball bearing. Support unit EK, BK type of internal bearing load in the right amount ... long time. Types : support Unit of Ball Screw BK,BF,EF,EK,FF,FK Fixed side: BK10,BK12, ... the same with THK . 8.Ball screw support-uni -BK, specifications the same with THK . If you have any ...