Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | High-Grade Copper Alloy |
| Model Number | HRB-78 |
| Inner Diameter | 20mm (Customizable) |
| Outer Diameter | 28mm (Customizable) |
| Length | 50mm (Customizable) |
| Hardness | HB 80-100 |
| Surface Finish | Polished |
| Operating Temperature | -50°C to 200°C |
| Machining Service | CNC Machining Available |
| Packaging | Industrial Carton with Foam |
Anonymous
Apr 17, 2026
Rating: 5/5
Great wear resistance
We have been using these bushings for three months now under heavy load. No signs of wear yet.
Anonymous
Apr 08, 2026
Rating: 5/5
Custom machining was precise
Requested specific tolerances for inner diameter. The team delivered exactly what we needed.
Anonymous
Mar 06, 2026
Rating: 5/5
Perfect fit for our machinery
Ordered these for a retrofit project. The dimensions were precise and the copper quality is excellent.
Anonymous
Feb 07, 2026
Rating: 4/5
Good quality, slow shipping
The product itself is top notch. Shipping took a bit longer than expected but worth the wait.
Anonymous
Jan 31, 2026
Rating: 5/5
Reliable supplier
Third time ordering from this seller. Consistent quality on the HRB-78 series.
Q: What is the standard tolerance for the inner diameter?
A: Standard tolerance is H7, but we can achieve tighter tolerances upon request.
Q: Is lubrication required for installation?
A: We recommend light lubrication during installation to prevent galling.
Q: Are these suitable for high-speed applications?
A: Yes, provided proper lubrication is maintained during operation.
Q: Do you provide material certification?
A: Yes, a mill test report can be provided with bulk orders.
Q: What is the lead time for custom sizes?
A: Custom machining typically takes 5-7 business days plus shipping time.
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