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The Tip Set for Metso Barmac RC840 Rotor is a high-performance wear solution that lies at the heart of vertical shaft impact crusher efficiency, directly influencing product quality and operational uptime.
RC840
ONA
847490
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In Barmac RC840 crushers, rotor tips accelerate material to speeds exceeding 80 m/s before impact—making them the most heavily worn components in the system. This tip set addresses this challenge through a combination of tungsten carbide-tipped (WC) primary tips and high-chrome backup tips, delivering exceptional wear resistance while maintaining optimal material flow dynamics. Its modular design enables rapid replacement, minimizing downtime in high-volume mining, aggregate, and recycling operations where every minute of production counts.
Material Composition: Primary tips formed from tungsten carbide-cobalt alloy (WC-12% Co) with HRA 89 hardness; backup tips from high-chrome cast steel (18% Cr) hardened to HRC 58 for secondary wear protection.
Dimensional Precision: Tips machined to 50-100 mm in length and 30-50 mm in width, with precision-ground mounting surfaces (tolerance ±0.05 mm) to ensure proper fit in RC840 rotor ports.
Weight Optimization: Individual tips weigh 0.8-2.5 kg (1.8-5.5 lb), with weight-matched sets (±50g per tip) to maintain rotor balance at operating speeds up to 1,500 RPM.
Compatibility: Direct replacement for Metso Barmac RC840 rotor tips, including OEM part numbers B96334135A (primary) and B96334140A (backup), ensuring seamless integration.
Tungsten carbide primary tips provide 30-50% longer service life than standard steel tips in granite crushing applications, extending replacement intervals from 300 to 450-600 operating hours .
Backup tips act as a fail-safe, maintaining crusher operation for an additional 8-10 hours if primary tips wear unexpectedly—enough to complete a production shift and plan maintenance .
Aerodynamically optimized tip profiles reduce air resistance by 15%, lowering power consumption by 5-8% compared to conventional blunt-tip designs .
Smooth, precision-ground surfaces (Ra ≤1.6 μm) minimize material adhesion, preventing build-up that disrupts flow and increases energy draw.
Tool-less installation using spring-loaded retaining bars allows a single technician to replace one tip in under 15 minutes—reducing total changeout time for a full rotor (8 tips) to under 2 hours .
Color-coded identification (red for primary, black for backup) prevents installation errors, while laser-etched part numbers simplify inventory management.
Maintains structural integrity at continuous operating temperatures up to 300°C (572°F), critical for processing hot materials like recycled asphalt pavement (RAP) or freshly crushed basalt.
Highway Aggregate Production: Essential for producing cubical asphalt chips and concrete aggregates, where tip geometry directly influences particle shape and gradation.
Hard Rock Mining: Handles iron ore, gold, and copper processing, withstanding impacts from high-silica ores that rapidly wear standard steel components.
Demolition Recycling: Processes reinforced concrete and asphalt debris, resisting damage from embedded steel rebar and preventing rotor imbalance.
Quarry Operations: Ensures consistent performance in limestone, granite, and basalt crushing, where high throughput demands reliable, long-lasting wear parts.
This tip set exemplifies material science innovation, balancing extreme hardness with fracture resistance to deliver unmatched durability in Metso Barmac RC840 VSI crushers.
