The bearing assembly work of the jaw crusher is mainly pided into two parts, one is the assembly work of the dynamic jaw bearing, and the other is the assembly work of several bearings. During the assembly process, you had better follow the instructions in detail.
Assembly work of dynamic jaw bearing
After the hot jaw bearing is heated and eccentrically mounted on the shaft, the actual interference of the interference fit should be measured in advance, and then the heating temperature should be determined. After the assembly of the jaw crusher motor jaw bearing and the eccentric shaft, the impact method is used to install it into the dynamic jaw bearing hole. At this time, the transition fit is used. The hole should be slightly larger than 0.01-0.03mm, so the outer ring assembly will not reduce the original clearance. The bearing sealing cover of the outer ring must be measured for tightness, and a paper gasket can be added to adjust it. The outer ring is not allowed to loosen.
Assembly work of frame bearings
The bearing of the jaw crusher frame is placed between the bearing seat and the eccentric shaft, which is tightened by the withdrawal sleeve. The original clearance of the bearing and the eccentric shaft journal size should be measured in advance, the axial movement distance of the withdrawal sleeve should be calculated, and the final assembly measurement The working clearance of the rear bearing, the movement of the withdrawal sleeve should meet the reduction of the original clearance, otherwise it will be easily loosened and damaged during use. Here, tools such as hydraulic nuts must be used to install the withdrawal sleeve. Hongxing Heavy Industry believes that after the withdrawal sleeve reaches the assembly position, it should be locked with a round nut. The anti-return method must be reliable, and can be locked with a lock washer or a locking card, or even with a flywheel wheel, and finally positioned by the shaft end baffle. The integral bearing seat is installed on the frame of the jaw crusher. High-strength bolts should be used, which must be tightened with a torque wrench. The bolts are assembled here with a pre-tightening force. The pre-tightening force should reach the standard value of the bolt of this specification, otherwise it is used. The bolts will loosen or even break during the process.
In summary, after the assembly of the bearing of the jaw crusher, the amount of grease filled with grease should be controlled at three-half of the bearing space, and the cavity on both sides of the bearing should be vacated to accommodate the oil that is extruded during use. Too much will increase bearing friction resistance. When changing the grease, all old grease should be cleaned, and different greases cannot be mixed. When the grease ages to block the refueling hole, dilute oil can be used to inject and open the refueling channel under pressure, and then add grease.
As a supplier with nearly 30 years' manufacturing, Shuguang Heavy Machinery also produces and sells hammer crushers, impact crushers, vertical shaft crushers, cone crushers, compound crushers, Raymond mills, high pressure mills. Powder machine, vertical mill, ultra-fine grinding machine, ball mill, double-shaft shredder and other heavy equipment crusher. Feel free to contact us for more details.
Factory Address: Longjiang West Road, Shangjie District, Zhengzhou City
Contact number: +86-371-67666660 676667
Mobile phone: 0086 13523465141
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