Then check whether the inner hole diameter and length of the two half couplings are consistent with the diameter and shaft extension of the prime mover and working machine. In general selection, it is better to make the length of half coupling at the end of prime mover and working machine less than its shaft extension length of 10-30mm
In order to facilitate installation, it is better to preheat the two half couplings in a 120-150 incubator or oil tank to increase the size of the inner hole and make it easy to install. After installation, ensure that the shaft head cannot protrude from the end face of the coupling half, and it is better to be flush. Check the distance between the two half couplings: measure the readings of 3-4 points along the two inner sides of the flange plate of the half coupling, take the average value, and the sum of the measured dimensions of the extension section and the two diaphragm groups, and the error between the two shall be controlled within the range of 0-0.4mm.
Alignment: use a dial indicator to detect the runout of the end face and outer circle of the flange plate of the two coupling halves. When the outer circle of the flange plate is less than 250mm, the runout value shall not be greater than 0.05mm; When the outer circle of flange plate is greater than 250mm, the runout value shall not be greater than 0.08.
