Head Lower Bushing for Metso GP Series | OEM 1022147350 Replacement

Metso GP Series Compatible Head Lower Bushing – OEM 1022147350

The operational integrity of your cone crusher’s main shaft depends heavily on a single sacrificial component: the head bushing. Our aftermarket replacement for OEM 1022147350 is not a generic casting; it is a precision-engineered tribological component designed for Metso GP100 and GP200 series crushers. Manufactured using Centrifugal Casting technology, this bushing offers a denser grain structure than standard sand-cast alternatives, eliminating porosity and ensuring it can withstand the extreme radial crushing forces (up to 450 kN) without deformation.

As a leading choice among crusher part suppliers, we prioritize metallurgy that balances load-bearing strength with anti-seize properties to protect your expensive main shaft.

Technical Specifications (ASTM/ISO Standards)

Performance Advantages & Metallurgy

Why choose our centrifugal bronze over standard replacement crusher spares?

• Anti-Friction Properties: We utilize UNS C93700 alloy, which contains 8-10% lead. This lead content acts as a microscopic lubricant during start-up or momentary oil starvation, preventing catastrophic “galling” (welding) of the bushing to the main shaft.
• Optimized Oil Distribution: The internal surface features CNC-machined spiral oil grooves calculated to maintain a hydrodynamic oil wedge, reducing the friction coefficient to μ ≤ 0.07 even under heavy eccentric loading.
• Thermal Stability: Unlike lower-grade brass, this alloy maintains dimensional stability at operating temperatures of 90°C – 110°C, ensuring consistent clearance is maintained to prevent clamping.

Field Diagnosis: When to Replace Your Head Bushing?

[Option C: Field Case Snippet]
“Premature bushing failure is often a symptom, not the root cause. During your routine maintenance, inspect the spent bushing. If you see ‘burn marks’ or dark discoloration on the thrust side (the side taking the crushing load), it indicates oil film breakdown, possibly due to overheating or low viscosity oil (Check if ISO VG 150/220 is used). If you find vertical scratches, it suggests contaminated oil—check your breather and filters immediately.”

Diagnosis Tip: Measure the clearance. For a GP200 size machine, if the radial clearance exceeds 0.5 – 0.6mm, the bushing must be replaced. Excessive clearance allows the head to ‘wobble’, which will destroy your dust seal and eventually the eccentric assembly.

Quality Assurance & Manufacturing

Every batch of our wear parts undergoes rigorous NDT (Non-Destructive Testing) before leaving the factory.

• Spectrographic Analysis: Verified chemical composition (Cu, Sn, Pb, Zn) to ensure alloy purity.
• Dimensional Check: 100% CMM inspection of critical concentricity and diameter tolerances (±0.02mm).
• Dye Penetrant Inspection: Checks for surface cracks or casting porosity that could lead to fatigue failure.

Compatible Crusher Models

• Metso GP Series: GP100, GP100S, GP200, GP200S
• Metso HP Series: Compatible with specific legacy conversions (verify part number).

Workshops And Warehouses

Cross-Brand Compatible

Our aftermarket cone crusher parts are engineered to be fully interchangeable with OEM components across major brands, ensuring identical fit and function.

Frequently Asked Questions (FAQ)

Q1: What is the correct method to install this lower head bushing?
This is an interference fit part. The bushing should be frozen using liquid nitrogen or dry ice to shrink it before installation. Do not hammer the bushing into place at room temperature, as this will shave the bronze and ruin the interference fit, potentially causing the bushing to spin in the housing.

Q2: Why do you use C93700 Bronze instead of Aluminum Bronze?
While Aluminum Bronze is harder, it is also unforgiving. For a head bushing, the material needs to be softer than the main shaft to act as a fuse. If lubrication fails, C93700 (Leaded Tin Bronze) will smear without destroying the expensive steel shaft. Aluminum bronze could score and ruin the shaft.

Q3: How does this part compare to the OEM lifespan?
Our customers typically report a lifespan parity with OEM parts (approx. 12,000 – 18,000 hours), provided the lubrication system is well-maintained. We use the same industrial standard materials and casting methods as the major OEMs.

Expert Reminder: The lifespan of a head bushing is 90% dependent on your oil cleanliness. When installing this 1022147350 bushing, always change your oil filter and ensure your lube oil is at the correct operating temperature (typically ~40°C inlet) before putting the crusher under load to prevent “cold start” scouring.

*All manufacturer names, part numbers and descriptions are used for reference only. They belong to their respective OEMs. NEWREG supplies aftermarket replacement parts – independently manufactured and warranted, not OEM-originated. No affiliation with OEMs is claimed or implied.