How to choose cross shaft universal coupling
Time: 2018-04-15 Browse:
CouplingThe material and processing procedure directly affect his service life.
XNUMX. The fork of the cross universal coupling is a forged part
240. The spline shaft and sleeve of the cross universal coupling need to be quenched and tempered HB 280-XNUMX.
XNUMX. Assembly technology and requirements:
1. When assembling, remove burrs and clean all parts
2. When assembling, it is necessary to ensure that the center lines of the two welded fork bearing holes in the middle are on the same plane, and the allowable difference shall not exceed 1°
3 After the coupling is assembled, the spline pair should slide freely and the joint should rotate flexibly
4. After assembling, clean the surface, except for the flange end face and the end face key with anti-rust grease, brush the anti-rust primer once and spray paint (no paint).
5. When packaging, it should be leveled and clamped.
The correct installation, reasonable use and regular maintenance of the cross shaft universal coupling are very important to its transmission effect and working life.
Installation and use, maintenance and repair of cross shaft universal coupling
1. When installing the cross universal coupling, first check the distribution error of the flange bolt holes, the error of the connection size of the stop and the end face and the coaxiality error of the universal coupling according to the requirements of the drawing. It is divided into layout orientation and original phase. In principle, both ends of the coupling can be used as active shafts, but it is advisable to keep the spline fitting as far away as possible from the source of vibration or shock.
2,Universal couplingBearings and spline pairs should be regularly lubricated. Generally, No. 2 industrial lithium-based grease is used. However, in high temperature conditions, No. 3 or No. 4 calcium-based grease can also be used. No. 4 synthetic lithium-based grease can be used every month in the first three months. Inject oil once. After the working conditions are stable, inject oil once every three months. In high temperature conditions, inject oil once a week.
3. When assembling, proceed in the reverse order of disassembly. It should be noted that the two phases of the spline shaft and the spline sleeve are the same; when assembling the cross shaft assembly, the gasket should be adjusted to ensure that the center line of the cross shaft is the same as the center line of the fork. Shaft tolerance.
4. In order to increase the service life of the universal joint, the cross shaft is adjusted 180 degrees every time it is disassembled so that the cross shaft journals can be used alternately.
Cross slide coupling: The maximum peripheral speed is about 30m/s, lubricated with No. 2 grease, the gap in the middle slide is filled with grease, and the grease change cycle is 1000 hours, suitable for ball bearing grease.The maximum peripheral speed is about 30m/s. It is lubricated with N220 gear oil. The gap in the middle sliding block is filled with oil. The oil change interval is 1000 hours. Sometimes a felt pad filled with oil is used.
