How to Replace High-Pressure Suspension Roller Mill Parts: Step-by-Step Guide

Introduction

High-pressure suspension roller mills are critical equipment in mineral processing and powder production industries. Proper maintenance and timely replacement of worn components ensure optimal performance and extended service life. This guide provides a systematic approach to replacing key parts of these mills, with technical insights from ZENITH – a leading Chinese manufacturer with over 30 years of expertise in grinding technology.

Exploded view of high-pressure suspension roller mill components

Safety Precautions

  1. Lock out/tag out electrical systems
  2. Allow mill to cool below 50°C
  3. Depressurize hydraulic systems
  4. Wear PPE including heat-resistant gloves and safety goggles

Step 1: Preparation

Required Tools

  • Torque wrench (200-500 Nm capacity)
  • Hydraulic jack (10-20 ton capacity)
  • Bearing puller set
  • Laser alignment tool

Recommended Replacement Parts

For optimal performance, consider ZENITH’s MTW Series Trapezium Mill components featuring:

  • Anti-wear shovel blades with curved design
  • Integral transmission bevel gears (98% efficiency)
  • Special alloy grinding rollers (3x longer lifespan)

Step 2: Grinding Roller Replacement

  1. Remove protective covers and disconnect lubrication lines
  2. Release spring tension using adjustment bolts
  3. Extract roller shaft using hydraulic puller
  4. Inspect bearing seats for wear (tolerance ≤0.05mm)

Technician replacing grinding roller in vertical mill

Step 3: Grinding Ring Installation

When replacing the grinding ring in our XZM Ultrafine Mill models:

  1. Measure base plate flatness (≤0.1mm/m)
  2. Apply high-temperature anti-seize compound
  3. Torque fasteners to 380±20 Nm in crisscross pattern
  4. Check radial runout (≤0.3mm at 1m diameter)

Technical Tip

ZENITH’s patented Quick-Change Roller Assembly System reduces replacement time by 60% compared to conventional designs.

Step 4: Reassembly & Alignment

  1. Align motor base within 0.05mm/m tolerance
  2. Adjust roller-to-ring clearance (8-12mm for coarse grinding)
  3. Verify classifier rotor balance (vibration ≤2.5mm/s)

Laser alignment of grinding mill components

Step 5: Testing & Commissioning

Parameter Acceptance Standard
Vibration ≤4.5mm/s RMS
Bearing Temperature ≤75°C (20°C above ambient)
Production Capacity ≥95% of rated output

Why Choose ZENITH Replacement Parts?

Our components are engineered to exceed OEM specifications:

  • Material certificates for all wear parts
  • Precision machining with ≤0.01mm tolerance
  • Compatible with multiple mill generations

For critical applications, our LUM Ultra-fine Vertical Mill offers revolutionary features:

  • Multi-rotor classification system
  • PLC-controlled grinding pressure
  • 98% collection efficiency

Conclusion

Proper part replacement extends equipment life by 30-50% while maintaining production quality. ZENITH’s global service network provides technical support and genuine parts for all major mill brands, backed by ISO 9001 certification.

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