Hammer crusher is suitable for material with medium hardness and brittle property whose compressive strength is no more than 300 MPa and humidity is not greater than 15 %, such as coal, cement, gypsum, alum, brick, tile, limestone and so on. However, there will be some faults in the running process of the hammer crusher. Now let's make a short analysis to the common faults of the hammer crusher.

1. Bearing overheating reasons: lack of grease; grease contamination deterioration; bearing damage. Elimination methods: filling the appropriate amount of grease; bearing grease should be 50% of its space volume; clean bearings; replace grease regularly.
2. Reasons of excessive discharging size: large hammer wear; sieve broken. Remedy: Replace the hammer and sieve bar.
3. Reason for production reduction: Screen gap is blocked; uneven feeding; Exclusion method: clean up the cracks in the screen bar; adjust the feeding mechanism.
4. Elastic coupling causes percussion: pin loose; Elastic ring wear. Remedy: Stop and tighten pin nut; replace elastic ring.
5. Knocking reason inside of the machine: the non-crushed material enters the inside of the machine; the liner fastener loosens and the hammer strikes the lining; the hammer or other part breaks. Solutions: clean up the crushing chamber; check the tightening of the liner and the gap between the hammer and the screen; replace the broken parts.