Industry News
Troubleshooting and Maintenance Guide for Raymond Mill Operators
2025-08-29 20:16:10
We are Liming Heavy Industry, a manufacturer of various types of industrial crushers, such as Raymond Mill, Trapezoidal Mill, Vertical Mill, Ultrafine Mill, Ball Mill, etc.
Our mills can process the following minerals:
limestone, quicklime, kaolin, talc, barite, bentonite, calcium carbonate, dolomite, coal, gypsum, clay, carbon black, slag, cement raw materials, cement clinker, etc.
If you need a mill to process stone or minerals into powder, please feel free to contact me (WhatsApp: +86 153 3380 7511). Thank you.
Raymond mills are widely used for grinding non-metallic minerals, but even well-designed machines can experience problems during operation. Recognizing common issues and addressing them quickly is key to maintaining performance and preventing downtime.
1. Low Grinding Efficiency or Poor Product Fineness
Possible Causes:
Worn rollers or rings
Oversized or uneven feed material
Incorrect airflow or classifier settings
Solutions:
Replace worn grinding parts
Pre-crush feed to 15–30 mm
Adjust airflow volume and classifier speed
2. Excessive Vibration or Noise
Possible Causes:
Imbalance in rollers
Loose foundation bolts
Bearing wear
Accumulated material in the chamber
Solutions:
Rebalance or replace damaged rollers
Tighten anchor bolts
Install new bearings
Clean out the grinding chamber
3. Overheating Bearings
Possible Causes:
Poor lubrication
Damaged seals
High ambient temperature
Solutions:
Apply the correct lubricant regularly
Replace faulty seals
Improve ventilation around bearing housing
4. Decline in Output Capacity
Possible Causes:
Blocked air ducts
Worn shovel blades
Motor underperformance
Solutions:
Clear ductwork
Replace shovel blades
Check motor and electrical supply
5. Irregular Material Discharge
Possible Causes:
Worn classifier blades
Misadjusted airlock
Excessive feed moisture
Solutions:
Inspect and replace blades as needed
Correct airlock settings
Pre-dry high-moisture feed material
Preventive Maintenance Best Practices
Check lubrication systems daily
Monitor vibration and noise trends
Keep spare rollers, blades, and rings available
Train operators in adjustment and inspection routines
Final Note: Regular inspections and proactive maintenance are the backbone of reliable Raymond mill performance. Addressing problems early not only stabilizes output and product quality but also extends the equipment's lifespan, reducing overall operating costs.
