Patent ID: 6471411
Filing Date: 2002-10-29
Classification: F16C

Abstract:
A self-containing full-complement cage for a flow medium lubricated roller bearing comprising long-rollers and short-rollers arranged alternatively one after another in rolling direction and a side plate, one on either side of the rollers, each short-roller having an axially through-going central cylindrical bore, a middle portion of a shaft penetrating through this central bore with radial play, the shaft having opposite end portions joining the middle portion, which are rigidly fixed onto the corresponding adjacent side plate, whereby a small clearance is kept between a cylindrical outer surface of each long-roller and a cylindrical outer surface of the neighboured short-roller, and whereby there are two ends on each long-roller, one on either side, both penetrating into a holding recess in an adjacent inner side face of the corresponding side plate and whereby said recess has two opposite part-cylindrical guiding surfaces with a common center-line extending rectangularly to the direction of rolling, these guiding surfaces of each recess embracing the outer surface of the corresponding end of the long-roller narrowly, characterized in that:the center-lines (15) of two neighboring shafts (14) of the cage (1, 30) have a mutual distance (X) in rolling direction (2), which has the same magnitude as the magnitude of the mutual distance (X1) in rolling direction of the center-lines (23) of two neighboring holding recesses (18, 19) of the corresponding side plate (10, 11), wherein a radial play between the middle portion (13) of each shaft (14) and the bore (7) of the short-roller (5) is greater than the sum of the guiding play (Z) of the ends (16, 17) of the long-rollers in the corresponding holding recess (18, 19) of the side plate (10, 11) plus the running play (Y) between long-roller (3) and short-roller (5), so that the short-rollers (5) of the cage (1, 30) are guided in rolling direction and continuously adjusted in a position without obliquity by merely slidingly contacting the outer surface of the neighboring long-roller during bearing operation.