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Home / Bearings & Bushings / HRB-78 Copper Bushing - Wear-Resistant Machined Sleeve Kit

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Material Composition High-Grade Copper Alloy
Hardness Rating HB 90-110
Standard Inner Diameter 78mm
Standard Outer Diameter 95mm
Standard Length 100mm
Dimensional Tolerance ISO H7/f7
Surface Finish Ra 1.6μm
Primary Application Hydraulic Cylinders & Pumps
Unit Weight 1.2 kg
Customization Options Available on Request

5 reviews

A

Anonymous

Apr 11, 2026

Rating: 5/5

Perfect fit for our hydraulic press

We ordered these liners for a refurbishment project. The dimensions were precise and the material quality is evident. No issues during installation.

A

Anonymous

Apr 10, 2026

Rating: 5/5

Great support for technical questions

Was unsure about compatibility with our existing setup. The team helped verify specs before purchase. Product works flawlessly.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Excellent wear resistance

Been using these in high-friction environments for over 6 months. They show minimal wear compared to previous suppliers. Highly recommended.

A

Anonymous

Mar 02, 2026

Rating: 4/5

Good quality, slight delay

The product itself is top notch and machined well. Shipping took a few days longer than expected, but the quality makes up for it.

A

Anonymous

Feb 19, 2026

Rating: 5/5

Custom dimensions were spot on

Needed a non-standard length for a specific machine. The custom machining service delivered exactly what was specified in the drawings.

5 FAQ

Q: Is a special tool required for installation?

A: A standard hydraulic press or arbor press is sufficient for installation. Ensure proper alignment to avoid damage.

Q: Can this liner handle operating temperatures up to 200°C?

A: Yes, the copper alloy used in the HRB-78 is rated for continuous operation up to 200°C without losing structural integrity.

Q: Do you offer bulk discounts for orders over 50 units?

A: Yes, we provide tiered pricing for bulk orders. Please contact our sales team directly for a customized quote.

Q: Can you modify the inner diameter to 75mm?

A: Yes, we offer custom machining services. Please submit your technical drawings for a feasibility check and quote.

Q: What type of lubrication is recommended for installation?

A: Standard industrial grease or oil suitable for copper alloys is recommended to ensure smooth operation and reduce initial friction.

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