Metso GP330 Bowl Liner Concave

No. The casting geometry (profile, flange OD, height, bolt circle) is 100% IDENTICAL. The difference is exclusively the Locking Hardware Kit supplied with the liner: GP330 (Legacy): Locking Wedges + High-Tensile Bolts (Mechanical lock). GP330S (Current): Hydraulic Clamp Ring Segments + Bolts (Hydraulic lock). Ordering Protocol: Always specify "GP330 Mechanical Lock Kit" or "GP330S Hydraulic Clamp Kit". The liner casting is universal.

C (Coarse): ~2,000–2,100 kg (4,400–4,600 lbs) | M (Medium): ~1,850–1,950 kg | F (Fine): ~1,700–1,800 kg | EF (Extra Fine): ~1,550–1,650 kg. LIFT PLANNING CRITICAL: This is a Critical Lift exceeding standard plant overhead crane capacity (typically 10t–15t). Requires 20t–25t+ certified overhead crane or 60t–80t mobile crane. Verify rigging points (4x lifting lugs standard). NW Rapid portable plants require external heavy mobile crane for bowl liner changes. Plan 4–6 hour crane window minimum.

The GP330 has the largest annular backing gap in the GP series. You need 80 – 110 liters (21 – 29 gallons) of two-component epoxy backing (Metso KrushMore, ESCOBACK 6000, Copps K-Back). Order a dedicated "GP330 Bowl Liner Backing Kit" (typically 4–5 x 25L pails). Pro Tip: Pre-heat pails to 25–30°C (77–86°F) for viscosity control; pour continuously in one session to avoid cold joints on this massive volume. Monitor exotherm temp.

In SABC circuits, the GP330 processes high-pressure, work-hardened (350-450 BHN), high-silica (65%+) SAG pebbles. The sliding abrasion in the parallel zone + impact at the feed eye destroys standard Mn18Cr2 via micro-gouging and work-hardening fatigue. TiC Composite provides instant 550–600 BHN hardness via in-situ TiC carbides, resisting both gouging (feed eye) and sliding wear (parallel zone). Typical life uplift: 2.5x–3.5x, turning a 2–3 week liner into an 8–10 week campaign on the circuit constraint.

Absolutely not. Zero dimensional or geometric interchangeability. GP330: Steep cavity (~50-55°), constant long stroke, mechanical/hydraulic clamp lock, specific flange/bolt pattern. HP Series: Shallower cavity, pivot point geometry, hydraulic lock bowl, different thread/flange. Attempting fitment destroys the adjustment ring, frame, and creates immediate safety hazards (ring bounce/ejection).

GP330 (Mechanical Wedges - CRITICAL SEQUENCE): Seat liner, verify 360° flange contact (feeler gauge < 0.05mm). Install all wedges/bolts Hand Tight. Torque in 3 Passes (Star/Criss-Cross Pattern): 30% → 60% → 100% Spec (Typ. M42 10.9/12.9 ~ 2,800–3,400 Nm). MANDATORY Re-torque at 2 Hours Operation (thermal expansion relaxes wedges). Re-torque at 24 Hours. GP330S (Hydraulic Clamp Ring): Seat liner, install clamp segments/bolts hand tight. Pressurize hydraulic pump to Metso Spec Pressure (Typ. 180–220 bar / 2,600–3,200 psi). Torque mechanical lock bolts to spec. Verify "Zero Gap" between clamp ring & adjustment ring flange 360°. Re-pressure check at 2 hrs / 24 hrs.

Do not run to perforation. Change at FIRST limit (Matched Set Policy): Parallel Zone Thickness < 30–35 mm (1.2–1.4"). CSS Drift > 5–6 mm wider than target. Product Flakiness Index > 12–15% (loss of parallel zone). Throughput Drop > 12% (profile worn to "hourglass"). Visual: Feed lip cracking > 50mm deep; severe pitting/gouging in upper chamber. GOLDEN RULE: On GP330, ALWAYS change Bowl Liner & Mantle as a matched set. The steep cavity/long stroke amplifies "step wear" mismatch. Running new Bowl on worn Mantle (or vice versa) destroys the new liner in < 30% of normal life and risks adjustment ring/head cone damage from uneven loading.