Powder Metallurgy Oil Bearing Copper Sleeve | Self-Lubricating Brass Shaft Sleeve M3-M60

This powder metallurgy oil bearing copper sleeve is designed for applications where continuous lubrication is difficult. The porous bronze structure stores oil and releases it gradually during operation, reducing friction and wear on your shafts. It is a reliable solution for extending the life of rotating or sliding components.

These brass shaft sleeves are made from a copper-base alloy using advanced powder metallurgy techniques. The material is porous, allowing it to be impregnated with lubricating oil. This self-lubricating property means you can install it and forget it, with no need for regular maintenance or external oiling systems. The sleeves are available in a wide range of metric sizes from M3 to M60, fitting many common shaft diameters.

Choosing the right bearing for your machinery is crucial for performance and longevity. This oil-impregnated sleeve offers a balance of strength and self-lubrication. It is an ideal choice for environments where adding grease or oil is impractical, such as in sealed assemblies, food processing equipment, or high-speed spindles.

Key Features and Benefits

- Self-lubricating porous bronze structure that reduces the need for manual maintenance

• Copper-base alloy construction that provides good wear resistance and durability

• Wide size range from M3 to M60 that fits various shaft diameters and applications

• Standardized dimensions that ensure easy replacement and installation

• Customizable options available by contacting customer service for non-standard sizes

Who Is This For

- Engineers and technicians maintaining industrial machinery with rotating shafts

• Hobbyists building or repairing small motors, pumps, or gearboxes

• Workshops needing replacement bushings for automotive or agricultural equipment

• Manufacturers producing equipment where sealed or maintenance-free bearings are required

Usage Scenario

Tom runs a small machine shop and was struggling with a conveyor roller that kept seizing up. The old bronze bushing was dry and worn. He replaced it with this powder metallurgy oil bearing sleeve. The self-lubricating action kicked in immediately, and the roller has been running smoothly for months without any additional oiling. Tom saved time on maintenance and avoided costly downtime.

Micro Comparison

Unlike standard bronze bushings that require periodic greasing, this oil-impregnated sleeve provides continuous lubrication from within its own material. It is a more convenient and reliable choice for applications where regular maintenance is difficult or forgotten. While solid bronze bearings offer high strength, they do not have the built-in oil reservoir that this powder metallurgy sleeve provides.

Specifications

Material: Copper-Base Alloy (Bronze)

Model Number: M3-M60

Standard or Nonstandard: Standard

Customization: Supported (contact customer service)

Package Includes

- 1 x Powder Metallurgy Oil Bearing Copper Sleeve (size as selected)

Why You Will Love It

You will appreciate the hands-off reliability of this self-lubricating sleeve. It solves the common problem of bearing failure due to lack of maintenance. With a wide size range and durable construction, it is a smart investment for keeping your equipment running.

Questions and Answers

Question: How does the self-lubricating feature work?

Answer: The sleeve is made from porous bronze that is vacuum-impregnated with oil. As the shaft rotates, friction heats the bearing, causing the oil to expand and seep out to lubricate the contact surface.

Question: Can I use this sleeve in a high-temperature environment?

Answer: These sleeves are designed for moderate temperatures. For extreme heat, please consult customer service about specialized materials.

Question: What is the tolerance on the inner diameter?

Answer: The inner diameter is manufactured to standard H7 tolerance. Please allow 1-3 cm / 0.4-1.2 in difference due to manual measurement for overall dimensions.

Question: Do I need to add any extra oil before installation?

Answer: No, the sleeve is pre-oiled. You can install it directly. For best results, ensure the shaft is clean and smooth.

Question: Can you make a custom size that is not listed?

Answer: Yes, we support custom sizes. Please contact our customer service team with your specific requirements.