PM Sleeve Bearings

PM sleeve bearings, or powder metal (P/M) sleeve bearings, are unlubricated or oil-impregnated bushings. Formed by compressing metal powders into a solid form, the microscopic pores hold lubricant. They act as self-lubricating, maintenance-free solutions for high radial loads, rotational friction reduction, and noise suppression.

They are among the most widely used porous bearings due to their simple structure, excellent wear resistance, and economical production costs.

Overview:

Ideal for:

Rotary applications

Oscillating motion

Maintenance-free systems

High-volume production

Available Materials:

17-4PH Stainless Steel

Low Alloy Steel

Copper Alloys

FAQ:

What is the difference between sleeve bearings and ball bearings?

Sleeve bearings are simpler, quieter, and more cost-effective, while ball bearings provide lower friction at high speeds.

Can PM sleeve bearings replace machined bushings?

In many applications, PM sleeve bearings offer lower cost and superior self-lubricating performance.

What is the difference between Powder Metal gears and MIM gears?

Powder Metallurgy gears are generally preferred for medium and large production volumes of simple to moderately complex transmission components due to their excellent cost efficiency and larger size capability.

Metal Injection Molding gears are more suitable for miniature and highly complex components requiring intricate geometries, thin walls, undercuts, or integrated functional features.

By offering both technologies, we can recommend the most suitable manufacturing process based on component geometry, performance requirements, production volume, and target cost.

For more customized powder metallurgy parts, contact us freely.