Causes of death of couplings and shaft locks

Published: 2019-12-28

Actually,CouplingAnd the shaft is often locked, the main reason isCouplingThe coordination interference between the hole and the shaft is too large.How to choose the appropriate amount of interference?Is there any need for extra interference?Generally consideredCouplingThere are three main purposes of interference between the hole and the shaft:

(1)CouplingIt is firmly connected to the shaft to transmit torque.

(2) PutCouplingThe coaxiality error with the shaft is reduced to a small amount. In addition to the uneven measurement of the coupling itself, the uneven measurement caused by the installation error will no longer occur; it will prevent the coupling from sliding along the axis and causing operation accidents..

(3) In the case of key connection, as long as the shaft keyway, keyway andCouplingThe keyway is properly matched to realize the torque transmission between the coupling and the shaft.Therefore, it is recommended that you choose a coupling to protect the mechanical transmission and servo motor.When the operating torque exceeds the set allowable torque value, the main passive side is removed, the response time is very short, and the partial peeling torque is also adjustable.