Bearings – Linear bearing – Recirculating
Patent
1988-09-19
1990-04-17
Footland, Lenard A.
Bearings
Linear bearing
Recirculating
F16C 2906
Patent
active
049175084
ABSTRACT:
There is provided a thin linear motion rolling guide unit comprising: a rail made of a long member having a U-shaped cross section in which first track grooves are respectively formed on the inside surfaces of both side walls in the longitudinal direction of the long member; a table which is slidably combined with the rail and has a pair of track members, second track grooves being formed on the outside surfaces of the track members at the positions which face the first track grooves of the rail and endless circulating passages for balls being also formed by the track members; the balls which are inserted between the first track groove of the rail and the second track groove of the table which faces the rail; flat plate shaped upper and lower lids attached in the upper and lower portions of the table so as to sandwich the track members which are symmetrically arranged with respect to an axial direction of the table; the track members forming loop inside wall surfaces of the endless circulating passages for the rolling members which are formed in the table; and a circulator provided between the track members symmetrically arranged, the circulator forming outside wall surfaces of the endless circulating passages, wherein the circulator is combined with the upper and lower lids and fixed, thereby constructing an endless circulating passage complete loop for the balls.
REFERENCES:
patent: 4593957 (1986-06-01), Hidano
patent: 4701057 (1987-10-01), Kashiwabara
patent: 4701058 (1987-10-01), Mottate
patent: 4799806 (1989-01-01), Seki
Footland Lenard A.
Nippon Thompson Co. Ltd.
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