Description
What is a Cone Crusher Upper Head Bushing?
An Upper Head Bushing is a critical, high-precision wear component positioned at the top of the cone crusher’s head assembly. Its primary function is to support the continuous gyration of the crushing head by providing a smooth, low-friction bearing surface against the main shaft. By evenly distributing the immense weight of the head assembly and maintaining strict operational alignment, a premium Upper Head Bushing ensures consistent product sizing while protecting expensive internal structural components from destructive metal-to-metal contact.
Equipment Compatibility & OEM Cross-Reference
Our aftermarket replacement Upper Head Bushing parts are precision-engineered to be direct-fit upgrades for Metso crushers, significantly lowering your Total Cost of Ownership (TCO) while ensuring zero compatibility issues and maximum field uptime.
| Supported Brands | Applicable Crusher Series | Common OEM Part Numbers |
| Raíces | Nordberg HP Series: HP100, HP200, HP300, HP400, HP500, HP800, HP4, HP6 | 70156562902, 1022145719, 7015656200, 1022147349, 1022147321, 1022147711 (Matches standard OEM specifications) |
Core Engineering & Technical Advantages
Because the head assembly undergoes brutal compression cycles and heavy friction, standard bushings can quickly degrade or gall. Our premium Upper Head Bushing replacements are manufactured in China to deliver superior wear resistance and extended service life:
High-Lead Bronze Alloy: Manufactured from specialized high-lead bronze or copper alloys to provide exceptional self-lubricating properties, ensuring crucial friction protection even during temporary low-oil conditions.
Centrifugal Casting Process: Cast using advanced centrifugal technology to guarantee a highly dense, uniform internal metal structure, eliminating porosity and maximizing load-bearing capacity.
Precision CNC Machining: Machined to exact OEM dimensional tolerances for a perfect, drop-in fit, ensuring a flawless interface with the main shaft and simplifying on-site installation.
Optimized Heat Dissipation: Engineered to minimize friction-induced heat generation, actively protecting the vital lubricating oil film and preventing catastrophic bearing seizure.
Maintenance Guidelines: When to Replace Your Upper Head Bushing
Operating with a compromised bearing surface will misalign the crushing chamber, resulting in poor aggregate shape and severe scoring on the main shaft. We recommend inspecting the Upper Head Bushing during routine mantle changes:
| Inspection Focus | Warning Signs (Replace Immediately) | Best Practice Solution |
| Surface Wear & Scoring | Deep scratches, flaking, or heavy scoring marks on the inner bronze bearing surface. | Replace the Upper Head Bushing immediately to prevent abrasive friction from destroying the main shaft. |
| Clearance Tolerances | Excessive physical play or out-of-round deformation detected between the bushing and the shaft. | Swap the bushing to restore proper gyration alignment and ensure consistent closed-side setting (CSS) performance. |
| Heat & Lubrication Damage | Discoloration or melted bronze smearing, indicating severe oil starvation or localized overheating. | Inspect the lubrication system for blockages and replace the ruined bushing to avoid complete head assembly lock-up. |
Explore More Crusher Head Assembly Components
To maintain peak aggregate throughput and stable crushing geometry, ensure your maintenance inventory is stocked with fully compatible, premium parts. Browse our specific component categories:
Find precision-machined Crusher Heads and Main Shafts for complete HP series rebuilds.
Explore our robust aftermarket Socket Liners and Head Balls.
View high-performance replacement wear parts for Sandvik CH & CS Series Crushers.
