Metso HP4 Bowl Liner - EC/C/F/MF Cavity - Mn22Cr5/TiC Composite

Engineered for the Metso HP4™ / HP400™ cone crusher—the industry benchmark for high-capacity secondary and tertiary crushing in both stationary plants and mobile Lokotrack® LT400HP™ operations—the HP4 Bowl Liner (Concave) is a heavy-section, monolithic casting designed to manage the “sweet spot” of throughput vs. reduction ratio. With crusher power ratings of 400 kW (536 HP) and a large feed opening, this liner endures massive compressive loads and high-volume abrasive wear, particularly in hard rock (granite, basalt, quartzite) and pebble crushing circuits.

Cast from premium high-manganese steel (Mn18Cr2 standard; Mn22Cr2/TiC ceramic-reinforced optional), the HP4 Bowl Liner features an optimized cross-section with reinforced ribs and a thickened feed-entry zone to resist “hooking” and plastic deformation under peak loads. The precision-machined upper flange, adjustment ring seat, and locking wedge pockets ensure a hermetic seal against the adjustment ring. This is critical for maintaining CSS integrity during the HP4’s high-stroke, high-speed operation, preventing fines ingress that leads to adjustment ring seizure or frame damage—common failure points when using non-OEM tolerance liners.

The cavity profiles (Extra Coarse, Coarse, Medium, Fine, Extra Fine) are CNC-verified to maintain the aggressive nip angle and extended parallel zone that define the HP4’s superior cubical product shape and high reduction efficiency. Profile integrity is sustained deep into the wear life, preventing the “hourglass” wear pattern that kills throughput on inferior castings.

Key Benefits:

• High-Throughput Structural Design: Thickened feed entrance and parallel zone walls withstand the HP4’s high reduction forces (high stroke + high speed) without bell-mouthing.
• Premium Material Options: TiC Composite highly recommended for pebble crushing (SABC) and highly abrasive ores (Band Iron Formation, Chert) offering 2.5x+ life vs. standard Mn18Cr2.
• Frame & Adjustment Ring Protection: Zero-gap flange machining and full-radius seat contact eliminate fretting corrosion—the #1 cause of expensive adjustment ring replacement on HP400s.
• Mobile & Stationary Compatibility: Identical casting serves both LT400HP mobile units and stationary HP400 frames; weight (~2,100–2,600 kg / 4,600–5,700 lbs) requires 20t+ crane/excavator.
• Optimized for “Interparticle Crushing”: Geometry promotes choke-fed, stone-on-stone action in the lower chamber, maximizing liner utilization and product cubicity.