6 common faults and solutions for hammer breaking

SHANGHAI SHIBANG MACHINERY CO., LTD is one high-tech enterprise, which involves R&D, production, sales and service as well. In the past 20 years, we devote to producing mining equipments, sand making machines and industrial grinding mills, offering expressway, rail way and water conservancy projects the solution of making high grade sand and matched equipments.

The hammer crusher is a kind of equipment for crushing materials in the form of impact. It is divided into two types: single rotor and double rotor. The single rotor is divided into reversible and irreversible. Due to its high productivity and easy maintenance, the hammer crusher is widely used in medium and fine crushing of medium hardness materials and plays an important role in the entire production line. as the picture shows:

It is inevitable that various failures will occur in the production of hammers, and failures need to be resolved in time. Let’s share with you the common faults and solutions for hammer breaks.


Common faults and solutions for hammer breaking

    • 1. Bearing heat

Reason: improper selection of bearing design, processing accuracy of equipment parts can not meet requirements, poor installation quality, vibration factors, poor lubrication, bearing wear and failure, V-belt tension is too large, improper maintenance methods, environment The temperature is too high.

Solution: Add a proper amount of grease; clean the bearing; the machining accuracy of the bearing seat must meet the requirements; replace the bearing.

    • 2. The discharge size is too large

Cause: The hammer is too worn; the screen is broken.

Solution: Replace the hammer head; replace the screen.

    • 3. The elastic coupling produces a knocking sound

Cause: The pin is loose; the elastic ring is worn.

Solution: Stop and tighten the pin nut; replace the elastic ring.

    • 4. Reduced output

Cause: The gap of the sieve is blocked; the feeding is uneven.

Solution: Stop, clean the blockage in the gap of the screen; adjust the feeding mechanism.

    • 5. The inside of the machine produces a knocking sound

Cause: Non-crushed material enters the inside of the machine; the lining fasteners are loose, the hammer hits the lining; the hammer or other parts break.

Solution: Stop, clean the crushing chamber; check the fastening of the lining and the gap between the hammer and the screen; replace the broken parts.

    • 6. Generate vibration

Reason: When the hammer is replaced or the cone is worn, the static balance of the rotor is not satisfactory; the hammer is broken, the rotor is out of balance; the pin is bent and broken; the disc or disc is cracked; the anchor bolt is loose.

Solution: remove the hammer head and select the hammer head according to the weight, so that the total weight of the hammer on each hammer shaft is equal to the total weight of the hammer on the hammer shaft, that is, the static balance meets the requirements; replace the hammer head; replace the pin shaft; Repair or replace the triangular disc or disc; tighten the anchor bolts.


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