Installation instructions for JMIJ-type diaphragm coupling with intermediate shaft

Published: 2018-05-11

★Before installation, check whether the prime mover and working machine are concentric, whether there are wrapping paper and scratches on the surfaces of the two shafts, whether there is debris in the inner holes of the two half couplings of the coupling, and whether the edges of the inner holes are bumped. If there is any damage, the shaft and half coupling should be cleaned up, and the damage should be treated with a fine file.Then check whether the inner hole diameter and length of the two half couplings are consistent with the diameter and shaft elongation of the prime mover and working machine.In general selection, it is better to let the length of the prime mover and the working machine end half coupling be less than the shaft extension of 10-30mm.

★In order to facilitate the installation, put the two half couplings in the 120-150 incubator or oil tank for preheating, so that the inner hole size increases and it is easy to install.After installation, ensure that the shaft head cannot protrude from the end face of the half coupling, and it is better to be flush.Detect the distance between the two halves of the coupling: take the average of the readings of 3 to 4 points measured along the two inner sides of the flange of the half coupling, and the sum of the measured dimensions of the extension and the two diaphragm sets, two The error is controlled within the range of 0-0.4mm.

★Correcting: Use a dial indicator to detect the runout of the flange end surface and outer circle of the two halves of the coupling flange. When the outer circle of the flange is less than 250mm, the runout value should not be greater than 0.05mm; when the outer circle of the flange is greater than 250mm, The jitter value should not be greater than 0.08.

JMIJ type intermediate shaft diaphragm coupling is a high-performance metal elastic element coupling, which is alternately connected by a sleeve in the middle, diaphragm sets on both sides, and half couplings through reamed bolts. The diaphragm set is made of multiple very thin stainless steel plates. The diaphragm set can be divided into two types: connecting rod type and integral type according to different structures.