Caged ball profile rail
The Nook caged ball profile rail for linear guidance prevents bearings from making incidental contact. Lubrication port fittings can be placed on the top, bottom or sides of the runner block; the 2 stainless steel reinforcement plates on either end of the runner block add a scraper function. With a clearance of less than 0.3mm, the plate can remove items such as filings from the rail and increase X-axis direction force capacity and operating speed.
Nook Industries; www.nookindustries.com