Applications
Hammer crushers are primarily used for breaking materials with a compression strength that is less than 200MPa, such as limestone, gypsum, coal, marlstone and sandy shale in cement industries. The hammer crusher can crush the raw ore into small particles of 25mm in a single process, which simplifies the process when compared to traditional multi-stage crushing, thus saving customer investment costs. The hammer crushing equipment can also be added to a complete production line.

Components

The rotor is the key part of the hammer crusher, and is composed of the rotor disc, end disc, hammer, hammer shaft, main shaft, belt pulley, bearing and bearing seat.

The hammer and the rotor disc are made of ultra-high manganese steel. By casting with abrasion resistant alloy rods, the service life is over 1.5 times that of common alloys.

All the inner surfaces of the housing that come into contact with the mineral materials are protected by liner plates in order to prevent wear.

The crushing plate is placed directly in front of the rotor, and the material size to be delivered is determined by the gap between the crushing plate and rotating motor circle. It is made of a high manganese steel through a casting process, with the maximum clearance designed to be the same as the maximum size of the discharged materials.

The grate is composed of cast high manganese steel grate bars. These grate bars are mounted at bottom of the rotor, covering almost all working surfaces with laying in a circumferential direction, thus wet materials can be easily removed.

By outfitting this equipment with a security door, foreign materials will be immediately discharged using centrifugal force, with the door automatically closing to prevent unprocessed materials from accidentally being removed. The security door can usually be left open when the required discharge size is large.

• If there are large sized materials that cannot be crushed by the hammer in the first round, the belt pulley mounted on the shaft end will return to the rotor disc in order to ensure a stable rotor operation.
• Due to its large feeding size design, a variety of minerals can be fed into crusher body.
• The materials can be crushed once by hammer crusher, and then transferred to the grinding process.
• The hammer is designed with an entire rotation function, so the material impact on the rotor is significantly decreased.
• The crushing chamber is adjustable, thus reducing abrasion on wearing components.
• The rotor of this hammer crusher features a great inertia and high rotating speed, and the linear velocity of the hammer reaches 30~35m/s.