Flanged Bronze Bushing with Solid Lubricant Plugs
Flanged bronze bushing with graphite plugs for high-load, low-speed pivots. Cast and machined in-house, made to your drawing or worn sample.
A flanged bronze bushing carries radial load in the bore and axial location against the flange face, which makes it a common choice for pivot pins, linkage joints and trunnion points on mining and heavy equipment. When grease access is poor or the motion is oscillating rather than continuous rotation, a bronze bushing with solid lubricant plugs keeps a transfer film on the shaft without a re-greasing routine.
Design and materials
Flanged bronze bushings are usually cast in high-strength copper alloys such as CuZn25Al5, CuZn24Al6Fe3Mn4 or SAE 430B, then machined to the drawing. Graphite or similar solid lubricant plugs are set into pockets on the working face at a spacing agreed with the customer, so the alloy carries the load while the plugs supply the low-friction film. The flange can be plain, stepped or drilled for bolts, depending on how the part is retained.
- Bore, flange diameter, flange thickness and length machined to drawing
- Lubricant plug pattern, diameter and depth set per application
- Oil grooves, chamfers and mounting holes available on request
- Alternative alloys including C93200, C93700 and C95400 when loads or abrasion demand them
Typical applications
These bushings suit slow-moving, heavily loaded joints where a film of oil is difficult to maintain: crusher toggle and pivot points, conveyor and feeder linkages, bucket pins, and pump or valve trunnions. They are also used in bulk material handling equipment where dust and grit shorten the life of a greased bearing.
Manufacturing and inspection
Haishan casts in its own foundry using centrifugal, sand and metal mold processes, then machines and checks the part in-house. Each heat is checked for composition on a spectrometer and for hardness before shipment, and dimensions are verified against the drawing. If you only have a worn part, we can reverse-engineer it and match the original alloy. Details of the processes are on our manufacturing page.
Send your drawing or a worn sample for a free evaluation.
Materials
Procurement facts
| MOQ | Samples from 1 pc; batch orders quoted per drawing |
|---|---|
| Tolerance | Machined to drawing tolerances |
| Lead time | Confirmed at quotation, per drawing and quantity |
Specifications
| Material | CuZn25Al5 / CuZn24Al6Fe3Mn4 / SAE 430B; C93200 (SAE 660), C93700, C95400 on request |
|---|---|
| Casting process | Centrifugal casting, sand casting or metal mold casting |
| Size range | Castings from 20 mm to 6000 mm diameter, 0.1-15000 kg; specific parts made to drawing |
| Machining | In-house CNC machining to drawing |
| Inspection | Spectrometer composition check, hardness testing |
| Customization | OEM, per drawing or sample; reverse engineering available |
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View DetailsRequest a Quote
Tip: tell us the duty — load, speed and lubrication conditions.