Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material Composition | High-Grade Copper Alloy |
| Product Model | HRB-78 |
| Inner Diameter | 50mm (Standard) |
| Outer Diameter | 65mm (Standard) |
| Sleeve Length | 100mm |
| Hardness Level | HB 90-110 |
| Surface Treatment | Polished & Deburred |
| Thermal Resistance | Up to 250°C |
| Lubrication Type | Compatible with Oil/Grease |
| Packaging | Industrial Protective Box |
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for Industrial Use
These liners fit perfectly into our hydraulic press. The copper quality is top-notch and shows minimal wear after months of operation.
Anonymous
Mar 09, 2026
Rating: 5/5
Direct Manufacturer Price
Buying direct saved us a lot compared to local suppliers. The HRB-78 spec is accurate and consistent across the batch.
Anonymous
Feb 21, 2026
Rating: 4/5
Good Quality, Slow Delivery
The product itself is excellent and meets specifications. However, shipping took longer than expected. Still satisfied with the purchase.
Anonymous
Feb 06, 2026
Rating: 4/5
Solid Construction
Heavy duty and well machined. Needed slight adjustment during installation but overall a reliable component for heavy machinery.
Anonymous
Feb 02, 2026
Rating: 5/5
Excellent Wear Resistance
We replaced our old steel bushings with these copper liners. The friction reduction is noticeable and maintenance intervals have increased.
Q: What type of grease is recommended for installation?
A: We recommend high-temperature lithium-based grease for optimal performance and longevity.
Q: Are these compatible with CAT excavators?
A: Yes, the HRB-78 series is commonly used in various heavy equipment including CAT models. Please verify dimensions.
Q: Can you customize the inner diameter sizes?
A: Yes, we provide OEM customization services. Please submit your technical drawings for evaluation.
Q: What is the warranty period for these bearings?
A: All HRB-78 liners come with a 12-month warranty against manufacturing defects under normal use.
Q: Do you offer bulk discounts for orders over 100 units?
A: Yes, we offer tiered pricing for bulk orders. Please contact our sales team for a custom quote.
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