Jaw crusher is one of the main equipment used in gravel production. Many customers will encounter various fault problems during the production process, which affects the production progress. Here, BTMA summarizes common jaw crusher failures and solutions for you.
3. Output fails to meet factory standards
cause of issue:
1) The hardness or toughness of the crushed material exceeds the range specified in the instruction manual;
2) The wiring of the motor power supply is reversed, causing the host to run in reverse (the movable jaw rotates clockwise), or the motor power supply is connected in a star connection by mistake from a triangle connection to a star connection;
3) The size of the discharge opening is smaller than the specified limit;
4) The jaw plate shifts, and the tooth tops of the movable jaw and the fixed jaw face each other;
5) The voltage at the work site is too low;
6) The gap between the movable jaw and the bearing is too large after wear, causing the outer ring of the bearing to rotate.
Solution:
1) Replace the crusher;
2) Replace the motor wiring;
3) Adjust the discharge opening to the size specified in the instruction manual, or add a crusher for fine crushing;
4) Check the tooth pitch size of the tooth plate, if it does not meet the standard, the jaw plate must be replaced; adjust the relative position of the fixed jaw plate and the movable jaw plate, and fix and compress after the tooth top is facing the tooth root to prevent displacement;
5) Increase the voltage at the work site to adapt to the host’s heavy load requirements;
6) Replace the bearings and movable jaw.
4. There is beating or impact sound when the movable and fixed jaw plates are working.
cause of issue:
1) The fastening bolts of the jaw plate are loose or dropped;
2) The discharge opening is too small, and the bottoms of the two jaw plates collide with each other.
Solution:
1) Tighten or match the bolts;
2) Adjust the discharge port to ensure the correct gap between the two jaw plates.
