Description
Reviews
| Brand | - |
| Category | Hardware & Tools / Other Machinery & Hardware (New) |
| Origin | - |
| Material Composition | High-density Graphite impregnated Copper Alloy |
| Manufacturing Tolerance | ISO IT7 Precision Grade |
| Lubrication Type | Self-lubricating with integrated Oil Grooves |
| Max Operating Temperature | Up to 250°C (482°F) |
| Hardness Rating | HB 90 - 110 |
| Surface Finish | Ra 0.8 Microns (Polished) |
| Application Scope | Injection Molds, Stamping Dies, and Heavy Machinery |
| Corrosion Resistance | High resistance to oxidation and chemical wear |
| Customization Options | Available in metric and imperial sizes with custom bore diameters |
| Quality Certification | ISO 9001:2015 Certified Manufacturing Process |
Anonymous
Mar 29, 2026
Rating: 5/5
Best value for precision mold accessories
Compared to other manufacturers, the price-to-performance ratio here is unbeatable. The material quality feels premium, and the machining finish is smooth. We have standardized on this product for all our new mold designs.
Anonymous
Mar 28, 2026
Rating: 5/5
Exceptional durability for high-speed molds
We replaced our standard bronze bushings with these graphite copper composite units in our high-cycle injection molding machines. The self-lubricating feature has significantly reduced downtime for maintenance, and the wear rate is noticeably lower than our previous suppliers.
Anonymous
Mar 28, 2026
Rating: 5/5
Consistent quality across bulk order
Ordered 500 units for our production line expansion. Every single bushing met the specified tolerances. The consistency in the graphite impregnation ensures uniform performance across all units. Excellent supplier for industrial hardware.
Anonymous
Mar 23, 2026
Rating: 4/5
Solid performance in dusty environments
We use these in a woodworking machinery setup where dust is a constant issue. The sealed nature of the oil grooves prevents contaminant ingress better than open bearings. They are holding up well after three months of continuous operation.
Anonymous
Mar 08, 2026
Rating: 4/5
Great precision, slight lead time delay
The dimensional accuracy of these shaft sleeves is outstanding, fitting perfectly into our precision die sets without any need for reaming. The only reason for 4 stars instead of 5 is that the custom sizing took a week longer than initially quoted.
Anonymous
Mar 06, 2026
Rating: 5/5
Solved our overheating friction issues
Our stamping presses were running hot due to friction in the guide columns. After installing these oil-impregnated bushings, the operating temperature dropped significantly, and the noise level decreased. Highly recommended for heavy-duty applications.
Q: Do you offer rush manufacturing for emergency replacement parts?
A: Yes, we offer an expedited production service for urgent requirements. This can reduce the standard lead time by up to 50%, subject to current factory capacity and an additional rush fee.
Q: What is the maximum load capacity per square millimeter for this composite material?
A: The static load capacity is approximately 140 N/mm², and the dynamic load capacity is around 60 N/mm², depending on the sliding speed and operating temperature. Detailed engineering charts are available in our technical datasheet.
Q: Can these bushings be used in food-grade packaging machinery?
A: Yes, provided the specific alloy grade selected meets FDA compliance standards for incidental contact. Please specify your requirement during ordering so we can supply the appropriate certification documents.
Q: Are CAD drawings available for custom dimensions before purchase?
A: Absolutely. Our engineering team can generate 2D and 3D CAD models based on your specific dimensions and tolerance requirements within 24 hours of receiving your inquiry. There is no charge for this design consultation.
Q: Is the oil impregnation refillable once depleted?
A: The graphite matrix is designed to release lubricant continuously over the product's lifespan. While the pores cannot be easily refilled in the field, the lifespan typically exceeds that of traditional greased bearings, often lasting the lifetime of the mold under normal conditions.
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