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Critical Wear Parts
These components require regular replacement due to abrasive wear:
Part Name Material Options Avg. Lifespan* Failure Symptoms Impeller High-Cr (A05, A49), Rubber, Ni-Hard 800-1,500 hrs Reduced head & flow Front Liner Cr15Mo3, Ceramic Composite 1,000-2,000 hrs Leakage at casing joints Back Liner Same as front liner 1,500-3,000 hrs Visible erosion marks Throat Bush Tungsten Carbide, SiC 2,000-4,000 hrs Increased shaft vibration Shaft Sleeve 316SS, Ceramic-coated 5,000+ hrs Seal leakage *Lifespan based on pumping silica slurry at 30% solids
Mechanical Components
Essential for pump operation and alignment:
Part Key Specifications Common Issues Shaft Assembly 420/431 SS, Hardened (>45HRC) Fracture near thread roots Bearings SKF/NSK 6316/C3 (grease-lubricated) Overheating (>85°C) Seal Housing ASTM A536 Ductile Iron Corrosion pitting Sealing Systems
Choose based on slurry characteristics:
Seal Type Pressure Limit Temp. Range Best For Expeller 8 bar -20~120°C Abrasive slurries Packing Gland 5 bar -10~80°C Cost-sensitive applications Double Mech Seal 25 bar -40~200°C Hazardous/toxic slurries Material Selection Guide
Choose based on slurry properties:
Slurry Characteristic Recommended Material High Abrasion (SiO₂) A05 High-Cr (27% Cr) Acidic (pH<4) Rubber-lined (Natural/Neoprene) Mixed Abrasion/Corrosion Ceramic-Filled Composite High-Temperature (>80°C) Ni-Hard 4
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