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

Introduction

Maintaining your high pressure suspension grinding mill is crucial for optimal performance and longevity. This guide provides detailed instructions for replacing key components, along with professional recommendations from ZENITH – a leading Chinese mining machinery manufacturer with over 30 years of industry experience. Our global service network spans 170+ countries, supported by a team of State Council-subsidized engineers.

Safety Precautions

• Disconnect all power sources
• Wear proper PPE (helmet, gloves, safety glasses)
• Use certified lifting equipment for heavy components
• Follow lockout/tagout procedures

Step 1: Preparation

Gather necessary tools: torque wrenches (50-300 Nm range), hydraulic jack (10-50 ton capacity), laser alignment tools (±0.02mm precision), and OEM replacement parts. For critical components, we recommend using genuine ZENITH XZM Ultrafine Mill parts which feature:

• Special alloy rollers with 3x lifespan
• Precision-machined grinding rings (D97≤5μm tolerance)
• Integrated dust-proof bearing units

Step 2: Roller Assembly Replacement

2.1 Removing Worn Rollers

1. Release grinding pressure completely
2. Remove 12-24 M24 mounting bolts (torque values: 280-320 Nm)
3. Document shim pack configuration for reassembly

2.2 Installing New Rollers

When installing ZENITH’s MTW Series Trapezium Mill components:

• Apply high-temperature lithium grease (NLGI #2) to pivot points
• Maintain 0.5-1.2mm clearance between roller and grinding ring
• Use dial indicators to verify concentricity (<0.05mm TIR)

Step 3: Grinding Ring Replacement

Our patented segmented design allows partial replacement:

Step 4: Pressure System Maintenance

For high-pressure suspension systems:

1. Inspect accumulator pressure (typically 8-12MPa)
2. Replace nitrogen bladder if pressure drops >15% in 24h
3. Calibrate pressure sensors to ±0.2MPa accuracy

Conclusion

Proper part replacement ensures your grinding mill maintains:

• Energy efficiency (up to 30% savings vs conventional mills)
• Consistent product fineness (325-2500 mesh range)
• Extended service intervals (5,000+ operating hours)

ZENITH’s global service centers provide 24/7 technical support and OEM parts supply for all major grinding mill models. Contact our engineers for customized maintenance plans.