FEATURES
The new RG series from Hiwin features a roller as the rolling element instead of
steel balls. The roller series offerssuper high rigidity and very high load
capacities. The RG series is designed with a 45-degree angle of contact.
Elasticdeformation of the linear contact surface, during load, is greatly reduced
thereby offering greater rigidity and higherload capacities in all 4 load
directions.The RG series linear guideway offers high performance for high-
precisionmanufacturing and achieving longer service life.
Optimal design
FEM analysis was performed to determinethe optimal structure of the block and
therail. The unique design of the circulation pathallows the RG series linear
guideway to offersmoother linear motion.
Super high rigidity
The RG series is a type of linear guideway that uses rollers asthe rolling elements. Rollers have a greater contact area thanballs so that the roller guideway features higher load capacityand greater rigidity. The figure shows the
rigidity of a rollerand a ball with equal volume.
Super high load capacity
With the four rows of rollers arranged at a contact angle of45-degrees, the RG series linear guideway has equal loadratings in the radial, reverse radial and
lateral directions. TheRG series has a higher load capacity in a smaller size thanconventional, ball-type linear guideways.
Operating life increased
Compare with the ball element, the contact pressure ofrolling element is distributed on the line region. Therefore,stress concentration was reduced siginificantly and the RGseries offers longer running life. The nominal life of RG
seriescan be calculated by using Eq.
