Sintered Bushings
Sintered bushings and oil-impregnated bearings are pressed from metal powder and sintered with a controlled porous structure that can hold lubricating oil. They provide a self-lubricating, cost-efficient bearing solution for high-volume rotating and sliding applications.
Yuehong produces high-precision oil-impregnated bearings in iron-based, copper-based and mixed systems. The porous sintered structure absorbs oil, providing self-lubricating performance in many consumer and industrial applications.
Key specifications
- Material families
- Iron-based powder · Copper-based powder · Iron-copper mixes
- Industries
- Automotive & Transportation · Smart Home · Power Tools · Office Equipment
- Primary process
- Powder compaction to green shape
- Scope
- Confirmed per project — exact grades, tolerances and scope agreed before production
Product overview
- These components serve rotating shafts, pivots and linkages where a maintenance-free bearing is preferred. Common examples include fan and motor bearings in home appliances, power tool spindle support and small appliance mechanisms.
- Bore size, wall thickness, oil content and press-fit requirements are specified from the customer drawing and confirmed before production.
Applications
- Home appliance motors and fans
- Power tool spindle and gear support
- Automotive auxiliary components
- Office equipment mechanism bearings
- Smart home device articulation points
Materials
- Iron-based powder
- Copper-based powder
- Iron-copper mixes
Manufacturing process
- Powder compaction to green shape
- Sintering to form the controlled porous structure
- Sizing to hold final dimensions
- Oil impregnation (vacuum oil filling) where specified
Secondary operations
- Sizing and burnishing of bores
- Oil impregnation
- Deburring and cleaning
Quality & inspection
- Bore and OD dimensional inspection
- Oil content verification where specified
- Porosity and density control
- ISO9001 quality management system per company statement (certificate verification required)
Product family is derived from company focus statement (high-precision oil-impregnated bearings) and legacy application concepts. Specific grades, tolerances and certified capabilities require engineering confirmation.
Customization
- Custom bore and flange geometry from drawings
- Material and oil selection with engineering support
- Sample confirmation before series production
Frequently asked questions
What is an oil-impregnated bearing?
It is a sintered bearing with interconnected porosity that holds lubricating oil. In operation the oil supports the rotating shaft, which can extend maintenance intervals in many applications.
Are your bushings self-lubricating?
Oil-impregnated sintered bushings are designed for self-lubricating performance in typical running conditions. Final performance depends on the load, speed and running environment, so application details matter.
Can you produce custom-size bushings?
Yes. We make custom tooling for customer bore, OD, length and flange specifications. Provide a drawing and material/performance requirements for review.
Request a Quote for This Product Family
Send your drawing, specification or sample information and our engineering team will review geometry, material and tooling feasibility for your part.