Sintered Iron Self-Lubricating Oilless Bushings

Specifications

• Product Category: Precision Bearings & Bushings
• Geometries: Cylindrical (Sleeve), Flanged, Spherical (Self-Aligning)
• Size Range: ID $\Phi$2.0 mm and above; fully customizable ID, OD, length, and spherical dimensions
• Materials: Sintered Iron (Fe), Sintered Iron-Carbon (Fe-C), Sintered Iron-Copper Alloy (Fe-Cu)
• Lubrication: Vacuum-impregnated with heavy-duty industrial oils, high/low-temperature synthetic oils, or anti-wear lubricating oils (15%–22% oil volume porosity)
• Secondary Treatments: Precision sizing, anti-rust oil immersion, black oxide coating, steam treatment (enhancing hardness and corrosion resistance)
• Applications: Power Tool Motors, Garden Machinery, Automotive Wiper/Seat Actuators, Fitness Equipment Pivots, Heavy-Duty Reducer Support Shafts

Manufacturing Processes & Capabilities

• High-Tonnage Compacting & Sintering: Utilizes high-purity iron and alloy powders compacted under high pressure and sintered in controlled atmospheres, maintaining 15%–22% interconnected porosity while ensuring high structural density.
• Micron-Precision Sizing & Form Tolerancing: Secondary sizing corrects sintering deformation to achieve tight tolerances on bore roundness, cylindrical straightness, and spherical curvature for vibration-free shaft support.

Features & Advantages

• High Load Capacity & Impact Resistance: Features superior hardness, compressive strength, and deformation resistance compared to bronze bearings, making it ideal for heavy radial loads, low-speed/high-torque conditions, and shock loads.
• Capillary Self-Lubrication & Maintenance-Free: Thermal expansion during rotation draws oil from micro-pores to form a dynamic lubricating film; capillary action reabsorbs the oil upon shutdown for long-term maintenance-free operation.
• Cost Efficiency & Wear Resistance: Delivers significant cost advantages over bronze alloys while offering high wear resistance and extended operating life under medium-to-heavy load applications.
• Self-Aligning Spherical Mechanism: Spherical profiles provide automatic self-alignment, accommodating structural deflections or mounting misalignments to prevent edge-loading and localized wear.