Excavator Alloy Copper Bushings: Self-Lubricating Steel-Shell Liners That Outlast Standard Bronze
Every hinge pin on an excavator — boom, arm, and bucket connections — carries the full shock load of digging, swinging, and lifting. When the bushing wears, the pin wears, and a machine that used to be tight starts clunking on every cycle. Replacing worn hinge bushings is one of the cheapest ways to bring an old excavator back to near-new condition. Alloy copper bushings combine a high-hardness steel outer shell with a self-lubricating copper alloy inner layer, giving you impact resistance on the outside and low-friction, long-wear performance on the inside — a combination standard bronze bushings simply cannot match.
Key Benefits
✅ Self-lubricating copper alloy inner layer — keeps the hinge pin protected and reduces wear without frequent greasing
✅ High-hardness steel outer shell — resists impact, deformation, and press-in damage under heavy digging loads
✅ Long service life — outlasts standard bronze and cast bushings in the same application
✅ Fit for most excavator models — from mini excavators to 50-ton class machines
✅ Oil groove and installation groove design — improves lubrication distribution and simplifies fitting
✅ OEM & wholesale available — factory-direct supply with consistent quality and competitive pricing
Model / Specification
| Item |
Specification |
| Product name |
Excavator Alloy Copper Bushing |
| Structure |
High-hardness steel outer shell + self-lubricating copper alloy inner layer |
| Inner layer |
Copper alloy liner with solid lubricant inserts for self-lubrication |
| Outer ring |
Wear-resistant hardened steel, precision machined |
| Groove design |
Oil groove / installation groove on outer ring |
| Application |
Excavator hinge pins (boom, arm, bucket linkage), loader and dozer pin joints |
| Fitment |
Fits most excavator models; custom sizes available per OEM drawings |
| MOQ |
Low MOQ for stock sizes; wholesale program for bulk orders |
| Packaging |
Standard export packaging, anti-rust coated |
Custom dimensions (inner diameter, outer diameter, length) are available — send us your OEM part number or a drawing of the original bushing and we will match it exactly.
About Lanxin Machinery
Guangzhou Lanxin Machinery Equipment Co., Ltd. is a specialized supplier of excavator engine assemblies and structural wear parts, serving customers across the globe. Our alloy copper bushings are manufactured to strict tolerances with selected raw materials, and every batch is inspected before shipment. We support both OEM and wholesale orders, and our team provides fast, professional technical support for fitment questions.
Why Choose Us
We understand that a hinge bushing is a small part with a big job. That is why we only supply bushings with hardened steel shells and true self-lubricating copper liners — no thin plating, no shortcuts. When you order from us, you get parts that match your machine, packaging that survives the freight, and a supplier that answers your messages.
Need a quote or a size check? Send us your excavator model or the original bushing dimensions, and we will confirm fitment before you order.
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