Crusher Rotors
Material: Alloy steel
Weight: 5 ~ 10 ton
Application: The crushing of granite, limestone, cement clinker, quartz stone, slag, iron ore, bauxite, and other minerals.
AGICO Crusher Rotors
Whether in a hammer crusher or an impact crusher, the rotor is the most core component, which directly affects the crushing efficiency and effect of the crusher. Therefore, if there is a problem with the crusher rotor, it is necessary to repair or replace it as soon as possible. And it is important to choose a trustworthy manufacturer when choosing a new rotor,
With years of experience in the production and processing of crusher rotors, AGICO CEMENT has a proven track record of delivering top-quality rotor parts. Our mature processing technology and well-equipped facilities allow us to manufacture rotors for both hammer crushers and impact crushers used in the cement industry. We not only supply rotors that are compatible with our own range of crushers, but also offer customized production services based on customer specifications or drawings, providing our clients with the best possible rotor components.
Why Choose Us
Optimized Design
We have improved the design of our crusher rotor using advanced finite element analysis techniques. Weak areas identified through stress analysis in the rotor are reinforced with high-strength, high-quality alloy steel. Additionally, our rotor features a variable moment of inertia design that effectively improves crushing efficiency and production capacity of the crusher.
High-Quality Materials
Our rotor is cast from premium alloy steel. The main shaft is made of CrMo alloy steel, known for its high strength, toughness, and good hardenability with no apparent temper brittleness. The hammer shaft is made of SiMn alloy steel, which enhances its wear resistance. The rotor disc is made of Q355D steel, not only improving its wear resistance but also increasing its tear resistance safety factor.
Long Service Life
The surface of our crusher rotor is protected by a tungsten-titanium alloy armor design, which reduces stress concentration on the hammer plate and end plate, enhances their strength, and effectively prevents hammer plate breakage and jamming in the crusher. This significantly extends the lifespan of the rotor, doubling the rotor’s service life.
Customized Processing
Our factory has complete production lines, advanced technology, and strong processing capabilities for crusher rotors. We can customize rotors to suit the type, size, production capacity, processing materials, and operating environment of our customers’ crushers. We can also produce rotors according to customer drawings as required.
Various Crusher Rotors Available
Hammer Crusher Rotor
A hammer crusher uses a rotor with a series of hammerheads that rotate at high speed and impact the material being crushed. The hammers may be fixed or free-swinging, and the rotor may have a single row or multiple rows of hammers.
Impact Crusher Rotor
In an impact crusher, the rotor is designed to accelerate the material to high speeds, then throw it against a stationary anvil, causing it to break or fracture. The rotor typically has two to four blow bars or hammers attached to it, which are made of high-strength materials like manganese or chromium steel.
Crusher Rotor Maintenance
The rotor bearings of impact crushers are subjected to significant wear due to prolonged operation in harsh conditions. Once the rotor fails, the cost of repair and replacement is high, and the replacement process is often complicated, resulting in production losses.
Taking effective measures to extend the service life of rotor bearings in impact crushers is crucial. The following are some points to note during the use of the rotor in an impact crusher:
1. Proper adjustment of the fit between rotor bearings
The main load borne by the rotor bearings of impact crushers is impact load, and the magnitude of the load on the rolling elements is different. The rolling element that is under the combined action of the impact load bears the maximum force, and the inner and outer raceways also experience the maximum force when they come into contact with the rolling element at this point.
Since the inner raceway rotates continuously during operation, the contact points on the track will cycle from the maximum force to the minimum force repeatedly. Therefore, the fit between the inner raceway and the rolling elements should be tighter to prevent any point from staying at the maximum force point.
The outer raceway, on the other hand, is relatively fixed, and the maximum force point will stay at a fixed point. Therefore, if the fit between the outer raceway and the rolling elements is looser, it may result in slight movement of the outer raceway under impact force, which increases the maximum force points and prolongs the service life of the outer raceway.
2. Improve the balance accuracy of the rotor
The rotor of an impact crusher is large in mass and high in speed, and casting deviations of the rotor body and quality deviations caused by installation of hammer plates can result in unbalanced centrifugal forces during rotor rotation. This unbalanced force induces forced vibrations in the machine, leading to damage to bearings and other components. Therefore, the rotor of the crusher must undergo balancing tests.
If the diameter of the rotor body is small, the balance can be achieved by adjusting the mass of the blocking plates on both sides of the rotor. If the diameter of the rotor body is large, counterweights can be welded onto the outer wall of the rotor body. To prevent the counterweights from falling off during vibration, several rows of slots can be cast at appropriate positions and the counterweights can be embedded and then welded, ensuring both stability and aesthetics.