Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	Copper Alloy with Graphite Inserts
Lubrication Type	Self-Lubricating (Solid Graphite)
Inner Diameter Range	22mm - 25mm
Outer Diameter Range	28mm - 35mm
Length Range	20mm - 30mm
Max Operating Temperature	250°C (482°F)
Load Capacity	High Static and Dynamic Load
Hardness	HB 90-120
Surface Finish	Precision Machined
Common Applications	Hydraulic Cylinders, Automotive Linkages, Industrial Machinery

5 reviews

Anonymous

Apr 12, 2026

Rating: 4/5

Good quality metal

Solid construction and accurate dimensions. The fit was slightly tight initially but seated well after installation. Good value for the price.

Anonymous

Mar 16, 2026

Rating: 5/5

No maintenance needed

Installed these on my farm equipment linkage. It has been months and no greasing required. The graphite plugs work exactly as described.

Anonymous

Feb 18, 2026

Rating: 5/5

Withstands heat well

Used in a high-temperature environment near an engine block. No signs of wear or degradation after several weeks of operation. Very durable.

Anonymous

Feb 01, 2026

Rating: 5/5

Perfect for hydraulic ram repair

These bearings fit perfectly in my hydraulic cylinder setup. The self-lubricating feature saves me time on maintenance. Highly recommend for industrial use.

Anonymous

Jan 28, 2026

Rating: 4/5

Accurate dimensions

Measured the inner and outer diameters with calipers and they matched the specs perfectly. Shipping was fast and packaging protected the items well.

5 FAQ

Q: What is the recommended shaft tolerance for installation?

A: We recommend a standard h9 shaft tolerance for optimal fit and performance with these copper sleeve bearings.

Q: Can these be used in underwater or wet environments?

A: Yes, the copper alloy material offers good corrosion resistance, making them suitable for wet or mildly corrosive environments.

Q: Is a press-fit installation required?

A: Yes, a standard interference fit is recommended to ensure the bearing remains secure during operation without rotating in the housing.

Q: Which model number fits a 25mm shaft?

A: Models 253225 and 253230 are designed for a 25mm inner diameter shaft. Please check the length requirement to choose between them.

Q: Do these bearings require regular greasing?

A: No, these are self-lubricating bearings with solid graphite plugs that provide continuous lubrication without additional grease.

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