191results about How to "Not easy to deflect" patented technology

There is realized a self-aligning roller bearing with retainer that stabilizes the orientation of spherical rollers and prevents these spherical rollers from skewing, and which can be rotated at high speed, and furthermore which enables efficient lubricant feed into pockets 9. By rotating a turning tool 14 as it revolves, the surfaces on both sides in the circumferential direction of respective column sections are processed into concave curved surfaces that oppose a rolling surface of the respective spherical rollers across a pocket clearance into which lubricant oil can be fed. The length of the column sections 8c is less than the length in the axial direction of the spherical rollers, and greater than a half of the length, and an end portion of the side surface in the circumferential direction of the respective column sections 8c projects further in the circumferential direction than an intermediate portion thereof, and the spherical rollers are embraced in the pockets 9.A self-aligning roller bearing with a retainer enabling high speed operation by stabilizing the attitude of barrel shaped rollers to prevent the barrel shaped rollers from being skewed and the efficient feeding of a lubricant into pockets (9) and a method of manufacturing the retainer for the self-aligning roller bearing. In the self-aligning roller bearing, the both side faces of each column part (8c) in the circumferential direction are machined to recessed curved faces facing the rolling surface of each barrel shaped roller through pocket clearances allowing the lubricant to feed thereto with a cutting tool (14) revolving while rotating on its axis. Also, the length of each column part (8c) is set equal to or less than the axial length of each barrel shaped roller and more than the half of the axial length thereof, the side face tip portion of each column part (8c) in the circumferential direction are projected from the intermediate portion thereof in the circumferential direction.

The invention discloses a combined down hole hammer sealing and anti-loosening structure. The structure includes a pore damping adjusting apparatus, a fitting, a pressure plate, a sealing gasket, a bolt, a spring gasket, a circular nut, an impactor upper joint, and a positioning taper sleeve. The impactor upper joint is locked to the positioning taper sleeve through the circular nut. The fitting is pressed against the impactor upper joint through the pressure plate, the sealing gasket, the bolt and the spring gasket. The fitting is also provided with the pore damping adjusting apparatus and can adjust the amount of air inflow. The impactor upper joint is in conical surface contact with the fitting and the positioning taper sleeve. Due to the pressing action of a pressure cover and the locking action of the circular nut, the contact surfaces of two pairs of conical surface undergo elastic deformation and are tightly bonded, which can generate greater friction. Therefore, the structure has sealing and anti-loosening functions.