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The fruits of comprehensive technology of NSK.
RA series roller guides handle a diversity of applications
The RA series of roller guides is the product of a combination of NSK’s extensive experience in roller
bearings and linear guide technologies. The result is an optimal design that takes full advantage of NSK’s
unique expertise to realize super-high load capacity, rigidity and motion accuracy, plus smooth motion.
Capable of handling a variety of applications, the RA series supports high machine performance.
RA series features support
high machine performance
Super-long Life
Super-high load capacity
NSK has realized super-high load capacity, now the highest
performance in the world, and achieved unprecedented operating life.
Maintenance-free
Installing an NSK K1™ lubrication unit assures long-term,
maintenance-free operation.
Highly dust-proof
The high performance seals as standard equipment completely
block the entry of foreign matter and maintain primary performance
over the long term.
Contribution to High-precision Manufacturing
Super-high rigidity
Super-high rigidity provides high-precision manufacturing.
Super-high motion accuracy
Coupled with NSK’s unique design approach, the vibration caused
by roller passage has been substantially reduced. This will greatly
contribute to improve machining quality.
Smooth motion
The installation of a retaining piece achieves smooth motion,
resulting in stable positioning accuracy.
The RA series is available in eight models:
RA15, 20, 25, 30, 35, 45, 55 and 65.
Used in Many Fields
Complete series
Series includes a full lineup from small to large, including low-profile
sizes. You can choose the model according to the application.
Interchangeable mounting dimensions
Outside dimensions and mounting dimensions conform to standard
dimensions for the market, so RA series roller guides can be used
without having to alter machine design. (See page 13 for mounting
surface dimensions)
Low friction
Uses rollers for rolling elements to hold down dynamic friction.
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