A single rod bearing for high-speed rotation

Abstract

The invention relates to the technical field of bearing lubrication, in particular to a single-rod bearing for high-speed rotation, comprising: a bearing rod, a bearing sleeve and a bearing gasket, the bearing sleeve is arranged on the rolling step shaft of the bearing rod, and is located in the annular gap A number of needle rollers are installed evenly along the circumferential direction, and two adjacent needle rollers and the inner hole wall form an oil collecting cavity; the bearing gasket is sleeved on the fixed step shaft, and the rolling step shaft is equipped with a bearing gasket to limit The limit flange of the bearing sleeve moves in the axial direction. The oil inlet grooves are arranged on both end faces of the bearing sleeve and are inclined in the radial direction. The first oil hole and the oil inlet groove on the bearing rod are connected with the annular gap. The hole communicates with the second oil hole. When the bearing rotates at a high speed, the pressure difference generated by the rotation of the oil inlet can make the lubricating oil quickly enter the annular gap, and quickly discharge through the first oil hole and the second oil hole, lubricate the needle roller and take away the heat generated by the bearing in time to avoid It reduces the risk of bearing overheating and prolongs the service life of the bearing.

Description

technical field [0001] The invention relates to the technical field of bearing lubrication, in particular to a single-rod bearing used for high-speed rotation. Background technique [0002] Bearings are often used as guide rollers, valve stem rollers, cam rollers and pressure rollers to achieve sliding, etc., and are mainly suitable for a variety of machinery, such as automatic machinery, special machinery, cam working devices, various handling systems, conveyors and machining centers. Knife device. [0003] The existing bearing lubrication cannot automatically and timely replenish the lubricant for the bearing, which requires regular manual lubrication, which is time-consuming and labor-intensive, and the lubrication effect of the bearing is limited by the rotation speed. When the rotor rotation speed is low, due to the small centrifugal force, the axial After the oil is discharged, it can be smoothly sprayed into the bearing raceway to complete the bearing lubrication, bu...

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Problems solved by technology

[0003] The existing bearing lubrication cannot automatically and timely replenish the lubricant for the bearing, and manual lubrication is required on a regular basis, which is time-consuming and laborious, and the lubrication effect of the bearing is limited by the speed. When the rotor speed is low, due to the small centrifugal force, the axial After the oil is discharged, it can be sprayed smoothly into the bearing raceway to complete the bearing lubrication. However, when the rotor speed is high, due to the large centrifugal force, the oil will float away in the radial direction after the axial discharge, and cannot approach the bearing, resulting in insufficient lubrication of the high-speed bearing, resulting in The risk of bearing overheating seriously affects the service life of the bearing, and there are great safety hazards during the operation of the bearing

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