Description
Reviews
| Brand | - |
| Category | Hardware & Tools / Other Machinery & Hardware (New) |
| Origin | - |
| Material Composition | High-density graphite infused with SAE 660 bronze |
| Lubrication Type | Self-lubricating oil-impregnated core |
| Operating Temperature Range | -40°C to +250°C |
| Maximum Load Capacity | Up to 15,000 PSI static load |
| Friction Coefficient | 0.05 - 0.15 (dynamic) |
| Manufacturing Tolerance | ISO IT7 precision grade |
| Surface Finish | Ra 0.8 µm polished inner diameter |
| Oil Groove Pattern | Customizable spiral or diamond configuration |
| Application Environment | Suitable for dry, dusty, or high-vacuum conditions |
| Certification Standards | RoHS compliant and ISO 9001 certified production |
Anonymous
Mar 30, 2026
Rating: 4/5
Great durability under heat
These bushings handle the thermal expansion in our die-casting operations very well. The only reason for 4 stars instead of 5 is that the lead time was slightly longer than expected, but the quality makes up for it.
Anonymous
Mar 27, 2026
Rating: 5/5
Excellent technical support
We needed a custom oil groove pattern for a specific application. The manufacturer worked closely with our engineering team to deliver a bespoke solution that performed flawlessly during testing.
Anonymous
Mar 26, 2026
Rating: 5/5
Eliminated sticking issues
Previously, we had frequent sticking issues with guided ejection plates. After installing these oil-impregnated composite sleeves, the movement is smooth and consistent even after millions of cycles.
Anonymous
Mar 17, 2026
Rating: 5/5
Cost-effective long term
While the unit price is higher than standard bronze bushings, the extended service life and elimination of external lubrication systems make these much more cost-effective over the year.
Anonymous
Mar 10, 2026
Rating: 4/5
Solid performance for heavy loads
Using these in a heavy-duty stamping press. They hold up well under significant lateral pressure. The graphite content provides just enough lubrication without attracting too much debris.
Anonymous
Mar 01, 2026
Rating: 5/5
Perfect fit for our injection molds
We replaced our standard brass bushings with these graphite copper sleeves in our high-cycle injection molding machines. The self-lubricating feature has significantly reduced our maintenance downtime. Precision is exactly as specified.
Q: Can these bushings be used in food-grade packaging machinery?
A: Yes, provided the specific alloy meets FDA requirements for incidental contact. Please contact our sales team to request our food-grade certified variant which uses NSF-approved lubricants.
Q: What is the recommended shaft hardness when pairing with this sleeve?
A: We recommend a shaft hardness of at least 50 HRC to prevent galling and ensure optimal wear life for the graphite-copper composite material.
Q: How does the oil impregnation work over time? Does it run out?
A: The porous graphite structure acts as a reservoir. As friction generates heat, microscopic amounts of oil are released to the surface. Once the machine cools, the oil is re-absorbed. This cycle continues for the life of the part under normal operating conditions.
Q: Do you offer custom sizes if our mold design requires non-standard dimensions?
A: Absolutely. We specialize in custom manufacturing. Please provide your CAD drawings or detailed dimension sheets, and our engineering team will provide a quote within 48 hours.
Q: Are these suitable for underwater or submerged applications?
A: While they are oil-impregnated, continuous submersion in water can eventually displace the internal lubricant. For submerged applications, we recommend our specialized marine-grade composite sleeves with sealed ends.
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