Description
Reviews
| Brand | - |
| Category | Model / Hobby Parts / Model Making Tools & Supplies |
| Origin | - |
| Model Number | JDB-8090 |
| Material Composition | High-Strength Copper Alloy with Integrated Graphite Plugs |
| Bearing Type | Self-Lubricating Sliding Bearing with Flange |
| Inner Diameter | 80 mm |
| Outer Diameter | 90 mm |
| Flange Diameter | 110 mm |
| Total Length | 60 mm |
| Operating Temperature | -40°C to +250°C |
| Load Capacity | High Static and Dynamic Load Resistance |
| Application Suitability | Ideal for Heavy-Duty Model Machinery and Industrial Prototypes |
Anonymous
Mar 22, 2026
Rating: 5/5
Superior self-lubrication
I used this for a high-friction pivot point in a large RC crane model. The self-lubricating feature works flawlessly even under heavy load conditions.
Anonymous
Mar 20, 2026
Rating: 5/5
Perfect fit for my custom gearbox project
The dimensions were exact as described. The graphite inserts provide smooth operation without needing constant oiling, which is great for my scale model engine build.
Anonymous
Mar 20, 2026
Rating: 4/5
Solid performance
Does exactly what it is supposed to do. The finish is clean and there are no burrs on the edges. Took off one star only because shipping took a little longer than expected.
Anonymous
Mar 16, 2026
Rating: 4/5
High quality material, slightly heavy
Excellent construction and the copper alloy feels very durable. It is a bit heavier than plastic alternatives, but that adds to the realism of the final assembly.
Anonymous
Mar 15, 2026
Rating: 5/5
Best bushing in this size range
Hard to find 80mm inner diameter bushings with this specific flange configuration. The graphite integration ensures long life without maintenance.
Anonymous
Mar 05, 2026
Rating: 5/5
Great for industrial prototypes
We ordered several of these for a functional prototype. The flange design made mounting incredibly easy and secure. Highly recommended for serious makers.
Q: Does this come with mounting screws?
A: No, the bushing is sold as a standalone component. You will need to source appropriate M6 or M8 screws depending on your flange hole alignment.
Q: What is the maximum rotational speed this bearing can handle?
A: For the JDB-8090, we recommend a maximum surface speed of 0.5 m/s for optimal longevity under standard load conditions.
Q: Is this bushing suitable for underwater applications?
A: While the copper-graphite material is corrosion-resistant, this specific model is designed for dry or lightly lubricated environments. For continuous submersion, we recommend checking our marine-grade series.
Q: Can I machine this further if I need a custom outer diameter?
A: Yes, the copper alloy base can be machined. However, please be careful not to remove too much material near the graphite plugs to maintain structural integrity.
Q: Is the graphite safe for use in food-contact modeling machinery?
A: The materials used are non-toxic, but this product is not certified for direct food contact. We advise using a barrier if there is any risk of contamination.
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