Answer a series of common sense questions about the rotor of a crush
![Answer a series of common sense questions about the rotor of a crush]()
Source:cronus
Posted:2025-10-17 14:41:48
The rotor of a crusher is the main wear-resistant part of the crusher. A long service life of the rotor directly affects the operation and production efficiency of the crusher. Many users are not clear about how to maintain the rotor of a crusher and what kind of rotor is a good rotor. So, what components make up the rotor of a crusher, where are the dangerous areas, what are the manifestations of faults, and what are the benefits of regular maintenance? What is rotor repair? Shanghai Cronus Machinery Co., Ltd. has been dedicated to the research and development and manufacturing of various types of crushers such as jaw crushers and hammer crushers for many years, and has reached a certain level in this field. Below, we will explain the relevant knowledge issues of crusher rotors for everyone.
What are the main components of a crusher rotor?
The rotor of the crusher is mainly composed of the main shaft, hammer disc, hammer head, hammer shaft, spacer sleeve, locking device, bearing, bearing housing, sealing device, pulley, etc.
Ii. Where are the dangerous areas of the crusher rotor mainly distributed?
According to the simulation stress analysis cloud map made based on the finite element structural analysis, it can be clearly seen that the dangerous areas of the crusher rotor are mainly distributed in the handle of the hammer head, the hammer shaft hole of the hammer disc, the external support of the hammer disc, the hammer shaft, the shoulder of the main shaft bearing, etc.
Iii. Why is it necessary to conduct regular rotor operation analysis, life prediction and plan major overhauls and maintenance?
The hammer crusher crushes limestone by the high-speed rotating hammer heads, which impact and grind it. Due to the long-term impact and friction of the materials during operation, the components of the rotor are inevitably worn, deformed and damaged, thus losing their normal working capacity. If the working condition of the rotor is not analyzed and its service life is not predicted, and planned maintenance and major overhauls are not carried out, once an emergency occurs, it will cause serious losses to the enterprise, resulting in a complete production halt.
What are the main fault manifestations of excessively worn crusher rotors?
The main faults of the hammer crusher are as follows: severe wear of the hammer disc shaft hole and outer edge, hammer shaft breakage, hammer disc cracking, malfunction of the locking device, main shaft displacement, bearing overheating, and in severe cases, bearing damage, main shaft deformation or even breakage.
V. What are the benefits of regular maintenance of rotors?
If you plan ahead, you will succeed; if not, you will fail. Regular maintenance of the rotor can significantly extend its service life, reduce the failure rate of the crusher, increase its utilization rate, and effectively boost the output of the crusher.
Vi. What are the main contents of rotor repair?
The main contents of the major overhaul of the rotor are: inspection and straightening of the hammer shaft and main shaft of the hammer crusher, inspection and repair of the locking device, repair of the outer edge of the rotor hammer disc or replacement of the hammer disc, repair, replacement and gradation of the hammer head of the hammer crusher, and cleaning and maintenance of the bearings, bearing housings and sealing devices.
