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Home / Bearings & Bushings / Manufacturer Direct Sales: HRB-78 Copper Bushing, Wear-Resistant Copper Sleeve Accessories

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Material Composition C93200 Bearing Bronze
Hardness Rating 75-90 HB
Inner Diameter Range 20mm - 200mm
Outer Diameter Range 25mm - 210mm
Length Options 50mm - 500mm
Machining Tolerance ISO f7/g6
Surface Finish Quality Ra 1.6μm
Maximum Load Capacity 250 N/mm²
Customization Availability CNC Machining Available
Package Weight Varies by Order Size

5 reviews

A

Anonymous

Apr 23, 2026

Rating: 4/5

Great Service

Support was helpful in confirming dimensions before purchase. The product quality is solid for the price.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Excellent Quality

Very satisfied with the build quality. The sleeves fit perfectly into our hydraulic machinery without any need for adjustment.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect Fit

Exactly as described. The custom machining service was accurate and the tolerance levels are spot on.

A

Anonymous

Feb 12, 2026

Rating: 4/5

Good Product

Shipping was slightly slower than expected, but the copper bushings are durable and meet our specifications.

A

Anonymous

Feb 07, 2026

Rating: 5/5

Highly Durable

Using these for heavy equipment maintenance. They show excellent wear resistance under high load conditions.

5 FAQ

Q: What is the standard lead time for custom orders?

A: Typically 7-14 business days depending on the complexity and quantity of the machining required.

Q: What type of lubrication is recommended for these bushings?

A: Standard industrial grease or oil is recommended. Specific viscosity depends on your operating temperature.

Q: Is there a warranty on custom machined parts?

A: Yes, we offer a 12-month warranty against manufacturing defects for all custom and standard parts.

Q: Can you machine oil grooves into the sleeves?

A: Yes, we can customize oil grooves and lubrication holes. Please submit a technical drawing for review.

Q: Do you provide material certification with the shipment?

A: Yes, we include Mill Test Reports and material certificates with every batch upon request.

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