Bearing

Abstract

The invention further discloses a bearing. The bearing comprises an inner matching shaft sleeve and an outer matching shaft sleeve which sleeves the inner matching shaft sleeve. A plurality of inner oil guide grooves or a plurality of outer oil guide grooves are correspondingly formed in an inner surface of the outer matching shaft sleeve or an outer surface of the inner matching shaft sleeve in the axial direction in a concave mode. A plurality of concave arc convex surfaces are formed among the plurality of inner oil guide grooves on the inner surface of the outer matching shaft sleeve. A plurality of convex arc convex surfaces are formed among the plurality of outer oil guide grooves on the outer surface of the inner matching shaft sleeve. When the concave arc convex surfaces or the convex arc convex surfaces are in contact with the outer surface of the corresponding inner matching shaft sleeve or the inner surface of the corresponding outer matching shaft sleeve, the distance between the contacted parts is gradually increased from the middle to two sides along the circumferential direction such that an oil guide channel communicated with the inner oil guide grooves or the outeroil guide grooves is formed between the concave arc convex surfaces or the convex arc convex surfaces and the corresponding outer surface of the inner matching shaft sleeve or the inner surface of the outer matching shaft sleeve. The bearing has low cost, heavy load and low loss. The invention further discloses an intermediate bearing sleeve.

Description

technical field [0001] The invention relates to a bearing, in particular to a heavy-duty bearing. Background technique [0002] The shredder shaft of the paper shredder needs to be installed on the frame through bearings, which have relatively high load requirements. The existing bearings are often divided into two types, one is rolling bearings and sliding bearings. Rolling bearings are used in a wide range of places, but for To meet the heavy load requirements of the paper shredder, the cost of the bearing is relatively high compared to the material requirements for the rollers, and the speed requirement of the paper shredder is relatively low, so it is completely unnecessary to use high-speed rolling bearings. Although sliding bearings can meet the requirements of heavy loads, due to the consideration of material wear, the cost of bearings is still high, and sliding bearings often have excessive friction and large ineffective losses. [0003] Therefore, there is a need f...

AI Technical Summary

Problems solved by technology

[0002] The shredder shaft of the paper shredder needs to be installed on the frame through bearings, which have relatively high load requirements. The existing bearings are often divided into two types, one is rolling bearings and sliding bearings. Rolling bearings are used in a wide range of places, but for To meet the heavy load requirements of the paper shredder, the cost of the bearing is relatively high compared to the material requirements for the rollers, and the speed requirement of the paper shredder is relatively low, so it is completely unnecessary to use high-speed rolling bearings

Although sliding bearings can meet the requirements of heavy loads, due to the consideration of material wear, the cost of bearings is still high, and sliding bearings often have excessive friction and large ineffective losses.

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