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Help CenterPowder Metal Oil-Impregnated Bearing Bushing - 20mm ID x 30mm OD x 25mm Length, 0.1mm Tolerance
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Welcome to Anping County Boli Hardware Wiremesh Products Factory – a trusted manufacturer since 1998, with an annual export value of US$5-10 million and a global presence across North America, South America, Europe, Asia, Africa, and Oceania. Our Powder Metal Oil-Impregnated Bearing Bushing (20mm ID x 30mm OD x 25mm Length, 0.1mm Tolerance) is engineered to deliver reliable, maintenance-free performance in demanding applications. By combining advanced powder metallurgy with controlled oil impregnation, this bushing offers consistent lubrication, reduced friction, and extended service life.
What is a Powder Metal Oil-Impregnated Bearing Bushing?
This bearing bushing is manufactured using a powder metal (PM) process – metal powders are compacted under high pressure and sintered to form a porous structure. The pores are then vacuum-impregnated with lubricating oil. During operation, heat causes the oil to expand and seep onto the bearing surface, creating a self-renewing lubricating film. When the equipment stops, the oil is reabsorbed. This makes the bushing self-lubricating for life, ideal for applications where regular maintenance is difficult or impossible.
Key Features & Technical Specifications
- Precision Dimensions: Inner diameter 20mm, outer diameter 30mm, length 25mm, with a tight tolerance of ±0.1mm for consistent fit.
- Self-Lubricating Design: Oil-impregnated porous structure eliminates the need for external lubrication systems, reducing downtime and maintenance costs.
- High Wear Resistance: Powder metallurgy allows tailored material composition – typically bronze or iron-based alloys – offering excellent load-bearing capacity and abrasion resistance.
- Corrosion Resistance: Suitable for mild to moderate environments; optional surface treatments available upon request.
- Low Noise & Vibration: The oil film dampens vibration and reduces operational noise, enhancing user comfort and equipment longevity.
- Wide Temperature Range: Operates effectively from -20°C to +120°C, with special formulations for higher temperatures available.
| Parameter | Value |
| Inner Diameter (ID) | 20 mm |
| Outer Diameter (OD) | 30 mm |
| Length | 25 mm |
| Tolerance | ±0.1 mm |
| Material Options | Bronze (CuSn10), Iron-Copper, or custom alloys |
| Oil Type | Mineral oil / synthetic oil (customizable) |
| Operating Temperature | -20°C to +120°C (standard) |
| Load Capacity | Up to 30 MPa (static) / 15 MPa (dynamic) – depends on material |
Advantages for Your Business
- Reduced Maintenance: No need to add grease or oil – the bushing is pre-lubricated for the entire service life, saving labor and lubricant costs.
- Consistent Performance: The oil-impregnated design ensures stable friction coefficients even under varying loads and speeds.
- Cost-Effective: Powder metallurgy allows high-volume production with minimal waste, offering competitive pricing without compromising quality.
- Easy Installation: Precision-machined to tolerance, these bushings can be pressed into housings without additional finishing.
- Versatility: Suitable for rotating, oscillating, or linear motion applications – from automotive steering systems to agricultural machinery and conveyor rollers.
Trusted Quality & Global Reach
Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a reliable partner for international buyers. With an annual export value of US$5-10 million and shipments from major Chinese ports (Tianjin, Qingdao, Shanghai, Foshan), we serve markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. Our experienced team ensures strict dimensional control and consistent oil impregnation. We also offer custom sizes, materials, and packaging options to meet your specific requirements. Contact us today to request a quote or sample – let our powder metal bearing bushings drive your equipment’s reliability.
Frequently Asked Questions (FAQ)
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Q: What is the maximum load this bushing can handle?
A: Typical static load capacity is up to 30 MPa, and dynamic load up to 15 MPa, depending on the material grade. For specific loads, please provide your application details so we can recommend the optimal alloy. -
Q: Can I use this bushing in high-temperature environments?
A: The standard bushing operates from -20°C to +120°C. For higher temperatures (up to 250°C), we can use special high-temperature oil and alloy formulations. Please inquire for custom solutions. -
Q: How long does the oil last? Does it need to be replaced?
A: The oil is impregnated into the pores and is designed to last the entire life of the bushing under normal operating conditions. No external lubrication is required. The oil is replenished from the pores as the bushing wears. -
Q: Is this bushing suitable for water or chemical environments?
A: Standard bronze bushings offer good corrosion resistance in dry or mildly humid conditions. For wet or chemical environments, we recommend specifying a stainless steel powder metal or an additional surface treatment. Contact us for guidance. -
Q: What tolerance is guaranteed? Can I get tighter tolerances?
A: We guarantee ±0.1 mm on ID, OD, and length. Tighter tolerances (e.g., ±0.05 mm) are available upon request, subject to additional machining. -
Q: Do you provide samples? What is the lead time?
A: Yes, we offer samples for evaluation. Standard samples can be shipped within 5-7 working days. Mass production lead time is typically 15-25 days, depending on quantity and customization. -
Q: What materials are available besides bronze?
A: We offer iron-copper, iron-carbon, and custom powder metal alloys. The material can be tailored to your specific load, speed, and environmental requirements. -
Q: How do I install this bushing correctly?
A: The bushing can be pressed into a housing with a recommended interference fit. Ensure the housing bore is clean and free of burrs. We recommend using a press or arbor to avoid damage. Detailed installation instructions are available with each order.
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