Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material Composition | High-Grade Wear-Resistant Copper Alloy |
| Model Series | HRB-78 |
| Standard Inner Diameter | 50mm (Customizable) |
| Standard Outer Diameter | 65mm (Customizable) |
| Standard Length | 100mm (Customizable) |
| Hardness Rating | HB 90-110 |
| Surface Finish | Ra 1.6μm Polished |
| Operating Temperature | -20°C to 150°C |
| Customization | OD/ID/Length Machining Available |
| Country of Origin | China |
Anonymous
Apr 11, 2026
Rating: 5/5
Wear resistance is excellent
Been running for 3 months in a high-friction environment. No signs of degradation yet. Will order again.
Anonymous
Mar 30, 2026
Rating: 5/5
Custom machining was precise
Needed a specific length for a retrofit project. The custom specs were followed exactly. Great communication from the seller.
Anonymous
Feb 28, 2026
Rating: 5/5
Perfect fit for our hydraulic press
Ordered the standard size and it slid right into the assembly. The copper quality feels robust and should last a long time under pressure.
Anonymous
Feb 16, 2026
Rating: 4/5
Good quality, shipping took a while
Material seems durable and machining marks are minimal. Only downside was the delivery time was slightly longer than estimated.
Anonymous
Feb 06, 2026
Rating: 4/5
Slightly tighter tolerance than expected
Had to ream it out slightly to fit our specific shaft, but the material quality is top notch. Good value for industrial use.
Q: Is this suitable for high-load applications?
A: Yes, the HRB-78 alloy is designed for heavy-duty machinery and high-load bearing scenarios.
Q: Can you provide mill certificates for the material?
A: Yes, material certification is available upon request at the time of order.
Q: Do you offer bulk discounts for orders over 100 units?
A: Yes, please contact our sales team directly for a customized quote on bulk orders.
Q: Does this require grease lubrication?
A: While self-lubricating to some degree, we recommend standard grease lubrication for optimal service life.
Q: What is the lead time for custom sizes?
A: Typically 7-14 business days depending on the complexity of the machining required.
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