Shaft Sleeve

Shaft sleeve I. product introduction The shaft sleeve is a cylindrical mechanical part on the rotating shaft, which is a part of the sliding bearing. Generally speaking, the shaft sleeve and bearing block with interference fit, and the shaft with clearance fit. Shaft sleeve means the sleeve on the propeller shaft or stern shaft. The bearing is in the process of mechanical transmission from the fixed and reduce the load friction coefficient components. The similarity between the sleeve and the bearing is that both bear the load of the shaft. The difference between the two is that the shaft sleeve is a whole structure, rotation is the relative movement between the shaft and the shaft sleeve; The bearing is a split type, rotation is the bearing itself inside and outside the ring relative motion. But in essence, the shaft sleeve is a kind of sliding bearing. The bearing bush is equivalent to the outer ring of sliding bearing, the bearing bush is integral, and relative to the shaft is moving, and the bearing bush has some pieces, relative to the shaft is rotating. In the LEGO Mindstorms series and BioTrans RoSys series robot components, the axle sleeve refers to the silver gray high standard axle holder, which can be divided into full axle sleeve and 1/2 axle sleeve. 2. Product parameters (1) part material: 45 steel. Good machinability. (2) the surface of the parts: cylindrical surface (Φ 33, 35, 50), the inner surface (Φ 31.5, 20.5), type hole, two end face, inner and outer surface steps, internal and external relief groove, internal and external chamfering. (3) the main surface analysis: Φ 20.5 inner hole is not only supporting other parts of the bearing surface, is also the main datum of this part; Φ 50 cylindrical and steps of surface is also used to support other parts. (4) the main technical conditions: Φ 50 cylindrical and Φ 20.5 inner hole alignment control within 0.03 mm; The steps and Φ 20.5 verticality control of inner hole in Φ 44 inner hole size tolerance of itself for mm; Roughness Ra0.8 mu; Heat treatment hardness of parts HRC50 ~ 55. Iii. Product advantages It can not only shock absorption, corrosion resistance, but also can be isolated from toxic media, increase the service life of the bearing. However, it is mainly used for sliding bearing, it can use the bearing to bear a greater load, coupled with lubricating oil, is the best partner of the parts of the mechanical parts, especially large, heavy machinery equipment applications. In order to keep the gear shaft from shifting due to vibration, a copper bushing is used to fix it. Therefore, the important role of copper shaft sleeve in the machine is to fix and position. Another function of the copper bushing is that of the sliding bearing. In order to save cost, the thickness of the bushing should be designed according to the axial load of the bearing. In fact, the copper shaft sleeve is also a sliding bearing. In some low speed, clearance requirements are higher occasions can be used instead of rolling bearing. The copper shaft sleeve is very wear-resistant and can be used for a long time, so it saves the cost to a great extent.

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