... ,quick delivery 3.ISO9001 Linear motion slide rail support unit FK seriesSupport unit of ballscrew EF,EK,BK,BF,FK,FF...As ... use of random combination where two or more bearings are mounted.Application:They are widely used in actuators of high precision ... machines, precision measurement equipment, robots etc.Features:1.Complete sliding unit system with high accuracy and can be moved smoothly without ...