Crawler crane idler
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Crawler crane idler damage causes
Crawler crane idler damage causes 1. The bimetal sleeve sliding bearing of the guide wheel is out of tolerance in different axial degrees, and the crawler walks produce vibration and impact. Once the geometric size is out of tolerance, the gap between the guide wheel shaft and the shaft sleeve is too small or there is no gap, and the thickness of the lubricating oil film is not enough or even No lubricating film. 2. The surface roughness of the guide wheel shaft is out of tolerance. There are many metal ridges on the shaft surface, which destroy the integrity and continuity of the lubricating oil film between the shaft and the plain bearing. During operation, a large amount of metal wear debris will be generated in the lubricating oil, which will increase the surface roughness of the shaft and the bearing, and deteriorate the lubrication state, resulting in serious wear of the guide wheel shaft and the sliding bearing. 3. The original structure is defective. The lubricating oil is injected from the plug hole at the shaft end of the guide wheel, and then gradually fills the entire cavity. In actual operation, if there is no special tool for oil injection, the lubricating oil can hardly pass through the circuitous cavity in the guide wheel only under the action of its own gravity, and The gas in the cavity is not discharged smoothly, and it is difficult to fill the lubricating oil. The oil filling space of the original machine cavity is too small, resulting in a serious shortage of lubricating oil. 4. The lubricating oil in the gap between the guide wheel shaft and the shaft sleeve cannot take away the heat generated by the bearing operation because there is no oil passage, resulting in an increase in the working temperature of the bearing, a decrease in the viscosity of the lubricating oil, and a reduction in the thickness of the lubricating oil film. Crawler crane idler YANTAI EVERGROWING IMPORT AND EXPORT CO.,LTD Tel: +86-535-6724921 Fax: +86-535-6724922 Email: info@crawlercranesparts.com Website: https://www.crawlercranesparts.com
Crawler crane idler damage causes
Crawler crane idler damage causes 1. The bimetal sleeve sliding bearing of the guide wheel is out of tolerance, and the crawler is vibrating when walking. Jump and shock, once the geometric size is out of tolerance, the clearance between the idler shaft and the bushing is too small or No gap, lubricating film thickness is not enough or even no lubricating film. 2. The surface roughness of the guide wheel shaft is out of tolerance. There are many metal ridges on the shaft surface, broken The integrity and continuity of the lubricating oil film between the shaft and the plain bearing are damaged. At work, run A large amount of metal wear debris will be generated in the lubricating oil, which will increase the surface roughness of the shaft and bearing, and lubricate the The condition deteriorated, causing serious wear of the guide wheel shaft and the sliding bearing. 3. The original structure is defective. Lubricating oil is injected from the plug hole at the shaft end of the idler wheel, and then Gradually fill the entire cavity. In actual operation, if there is no special tool for oil filling, lubricate the It is difficult for the lubricating oil to pass through the circuitous cavity in the guide wheel only under the action of its own gravity, and the cavity The internal gas is not discharged smoothly, and it is difficult to fill the lubricating oil. The oil filling space of the original machine cavity is too small. The amount of lubricating oil is seriously insufficient. 4. The lubricating oil in the gap between the guide wheel shaft and the shaft sleeve cannot remove the bearing because there is no oil passage. The heat generated by the work is taken away, causing the working temperature of the bearing to increase and the viscosity of the lubricating oil to decrease. The thickness of the lubricating oil film decreases. YANTAI EVERGROWING IMPORT AND EXPORT CO.,LTD Tel: +86-535-6724921 Fax: +86-535-6724922 Email: info@crawlercranesparts.com Website: https://www.crawlercranesparts.com
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YANTAI EVERGROWING IMPORT AND EXPORT CO., LTD.
ADD: A508, NO 133-1 YINGCHUN ROAD, LAISHAN DISTRICT, YANTAI CITY, CHINA
ZIP CODE: 264003
TEL: +86-535-6724921
FAX: +86-535-6724922
EMAIL: info@crawlercranesparts.com