Bearings – Rotary bearing – Hydraulic or pneumatic bearing support
Patent
1981-12-11
1983-08-23
Footland, Lenard A.
Bearings
Rotary bearing
Hydraulic or pneumatic bearing support
308187, 308189A, F16C 1906
Patent
active
044000987
ABSTRACT:
A self-contained bearing unit rotatably supports a tool spindle in a bore of a machine tool housing wall. The unit employs an angular-contact ball bearing and the outer race is displaced axially to alter the pre-loading by supplying pressure fluid to a chamber containing a resiliently deformable seal or an annular bellows device.
REFERENCES:
patent: 3756672 (1973-09-01), Hibner et al.
patent: 3782793 (1974-01-01), Sinner
patent: 4215907 (1980-08-01), Pohl
Kent Anthony J.
Knight Samuel H.
Lacey Stephen J.
Sharman Kenneth E.
Walford Thomas L. H.
Footland Lenard A.
Ransome Hoffmann Pollard Limited
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