Ball linear guide

Bearings – Linear bearing – Recirculating

Patent

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F16C 2906

Patent

active

058510737

ABSTRACT:
A ball linear guide includes a ball-cyclic-running path composed of a loaded ball groove and a non-loaded ball groove, wherein said ball linear guide main body is of a single structure including: a dovetail groove having at both ends thereof an inlet and an outlet for balls; and a tunnel-like non-loaded ball hole being continuous to said dovetail groove with said inlet and said outlet being as both ends thereof. The tunnel-like non-loaded ball hole is manufactured by forming, around a tunnel-like core, an iron alloy containing about 0.85 wt % of C, about 0.3% of Si, about 0.3 wt % of Mo, about 4.0 wt % of Cr, about 5.0 wt % of Mn, about 6.0 wt % of W, about 2.0 wt % of V, and/or about 0.6 wt % of Ti. The ball linear guide allows smooth rotation of balls at a high speed with reduced noise, and also it exhibits a long service life. Further, in the manufacturing method, the number of parts and the number of working steps are reduced, and the assembly is easily performed without great care.

REFERENCES:
patent: 2620163 (1952-12-01), Stone
patent: 3950040 (1976-04-01), Fall
patent: 5076713 (1991-12-01), Morita
patent: 5624195 (1997-04-01), Abe et al.

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