Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material Composition	High-Grade Copper Alloy
Model Number	HRB-78
Inner Diameter	20 mm
Outer Diameter	28 mm
Overall Length	35 mm
Hardness Rating	HB 85-95
Surface Finish	Smooth Polished
Dimensional Tolerance	ISO H7/f7
Manufacturing Origin	Manufacturer Direct
Customization	Machining Available

5 reviews

Anonymous

Mar 21, 2026

Rating: 5/5

Precise Measurements

Measured the dimensions upon arrival and they are within the stated tolerance. Great for precision engineering projects.

Anonymous

Mar 21, 2026

Rating: 5/5

Very Durable Component

We use these in high-friction applications and they hold up well. The wear resistance is exactly as described in the specs.

Anonymous

Mar 14, 2026

Rating: 4/5

Good Value for Money

Solid material and good machining tolerance. Shipping took a bit longer than expected, but the product quality makes up for it.

Anonymous

Mar 03, 2026

Rating: 4/5

Reliable Supplier

Product is good and matches the description. Would appreciate more packaging protection, but the bushing itself was undamaged.

Anonymous

Feb 01, 2026

Rating: 5/5

Excellent Fit for Machinery

These bushings fit perfectly into our lathe setup. The copper quality is top-notch and shows no signs of wear after weeks of operation.

5 FAQ

Q: What is the return policy if the dimensions are incorrect?

A: We accept returns within 30 days if the product does not match the specified dimensions. Please contact support to initiate.

Q: What type of lubrication is recommended for this copper sleeve?

A: Standard industrial grease or oil suitable for copper alloys is recommended depending on your operating speed and load.

Q: Can you cut these bushings to custom lengths?

A: Yes, we offer machining services. Please contact our support team with your specific dimensions for a quote.

Q: Do you offer discounts for bulk orders?

A: Yes, we provide tiered pricing for bulk purchases. Please reach out to sales for a customized quote.

Q: Is a material certification included with the shipment?

A: Yes, a standard material certificate is included with every order upon request at checkout.

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