摘要:
A tension or idler roller for a belt drive system has an outer roller for engaging a belt, an inner support body adapted to be affixed to a machine, and a rolling bearing between the outer roller and the support body. The support body is comprised of a pair of identical cup-shaped elements oriented either with their open ends toward one another or their closed ends toward one another, the shells having an eccentric mounting. The inner ring of the bearing may be a separate element or it may be formed in the shells.
摘要:
In an antifriction-bearing throwout, particularly for automotive clutches, a clutch bearing with a non-rotating bearing-ring abuts in a radially slidable manner against a thrust plate of a sliding sleeve and is held in the centered position.To facilitate centering of the clutch bearing in relation to the tongue ends of the clutch diaphragm-spring, and to prevent slip-through of the clutch bearing in the case of shock as by hard road-bumps, the non-rotating bearing-ring is arranged in a manner such that, overcoming a radially-acting friction force in relation to sliding sleeve, it can tilt in a circumferential direction, within certain limits, and can slide in a radial direction along two guide-surfaces that run parallel to one another.
摘要:
A rolling bearing assembly comprising at least a pair of race rings having confronting spaced raceways and a plurality of rolling elements in the annular space between the race rings and elastically flexible damping means comprising an elastic damping element mounted in at least one recess in the annular portion of at least one of the rings defining the raceway, said damping element projecting slightly into the area of the raceway to frictionally engage the rolling elements and provide a predetermined resistance to rolling.
摘要:
A linear rolling bearing has an outer housing with a central bore. A plurality of radially inwardly directed axially extending projections in the bore form races for rolling elements under load, and surfaces between the projections serve as return races. A cage within the bore has a plurality of axially extending guide channels, and semicircular guide channels interconnect pairs of the guide channels to form endless channels for the rolling elements. The outer housing has inclined surfaces joining the corresponding races for loaded and unloaded rolling elements, whereby the inclined surfaces steplessly interconnect the respective races and extend radially outwardly from each of these races.
摘要:
In a longitudinally movable rolling bearing having a plurality of endless rows of spherical rolling elements, elongated races are provided for supporting loaded rolling elements against the inner boring of a housing. The radially directed surfaces of the rails are identical, so that the rails may be reversed to prolong the life of the bearing. In one embodiment, the rails are straight in the lengthwise direction, for use in a bearing in a precision machine. In another embodiment of the invention, the rails are convex curved in the lengthwise direction, for use in a bearing requiring compensation for misalignment of a shaft and the housing.
摘要:
A clutch release structure includes a clutch release bearing having a running portion, or the like, positioned to axially engage the diaphragm or dish-shaped clutch release elements. The bearing portion, or the like, has an axially extending portion which projects through the central boring in the clutch release elements, and damping means are provided radially between this extension and the clutch release spring elements.
摘要:
Torque transmitting bearing assembly for longitudinal movements with a shaft (1) supported axially slidable by means of a roller bearing in a housing (2) whereby the roller bearing is provided with at least one bearing race plate (3) which is arranged radially adjustable by means of a corresponding row of balls (4) against a bearing race groove (5) running axially in the shaft (1) and which can be fixed to the housing (2), characterized in that the outside of the radially adjustable bearing race plate (3) facing the bore surface (7) of the housing (2) is provided with at least one projection having a knife-like edge (6) or the like which penetrates into the bore surface (7).
摘要:
A linear motion ball bearing has an outer sleeve formed from a flat blank rolled into a circular split-sleeve, a cylindrical cage situated within the bore of the outer sleeve and defining therewith continuous ball races filled with a plurality of balls, the axial gap and bore diameter of the outer sleeve being variable to provide adjustment of the bearing.
摘要:
A linear motion ball bearing having an outer sleeve and a cylindrical ball-guide cage with endless rows of balls axially movable on a central shaft, the cage defining for each row a main guideway for loaded balls engaged by a race plate and a return guideway for unloaded balls, this race plate situated partially in a recess extending radially inward in the cage and partially in a depression extending radially outward in an adjacent portion of the bore surface of the outer sleeve. During assembly of the bearing the race plates are movable radially inward when the cage is inserted axially into the bore of the outer sleeve, and the race plates are moved radially outward into the depressions of the sleeve when balls are inserted in the cage's guideways.
摘要:
A system for lubricating bearings in a drilling apparatus including a roller bit with at least one pivot and a cutting roller rotatably supported on the pivot by bearings. A cavity or chamber is formed in the roller bit for a non-compressible flushing liquid. The flow channel which communicates with the chamber at one end and the bearing cavity at the other end, provides a flow path for the flushing liquid to the bearing cavity. In one form the flushing liquid discharges to the bearing cavity at a point remote from an annular gap between the outer axial end face of the cutting roller and the roller bit. In another embodiment circumferentially spaced discharge ports are located between the bearings so that a portion of the flushing liquid is discharged to the environment and the remainder flows through the bearings and out the annular gap.