Category: Round arc guide rail has the following characteristics: Through the case, do slewing bearing preload. The circular rail is V-shaped rollers in V-rail rolling surface, you can adjust the eccentric roller eccentricity, get fit pretension; so, the rigidity of the whole system of higher and run more smoothly. Order hotline: 4000-859-096 Beijing Kai Sheng Technology Development Co., gravel: http: //schmotion.com