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Oil-impregnated Bearings

Your Professional Oil-impregnated Bearings Supplier！

Guangdong Bosheng New Materials Technology Co., Ltd. was formerly known as Dongguan Jingsheng Powder Metallurgy Products Co., Ltd., which was established in 2004. In 2019, for business expansion, the company invested 100 million yuan to purchase land and build a factory in Zicheng Industrial Park, Zijin County, Heyuan City, covering an area of 18 mu and with a construction area of 28,800 square meters. Our Product:Miniature planetary gearbox, powder metallurgy product.

Why Choose Us

Custom Service

With a skilled engineering team and flexible production setup, we deliver tailored solutions that meet specific performance and design requirements across industries such as automotive, robotics, and power tools.

Our Certifications

Certified under ISO9000 and IATF 16949, our manufacturing processes are structured to ensure product consistency, traceability, and compliance with global quality expectations.

Consistent Delivery

We prioritize on-time delivery and responsive communication, supporting customers with dependable supply and after-sales service to build long-term, stable cooperation.

Our Service

In addition to providing high-quality products, the company also attaches great importance to cooperation and communication with customers. It offers personalized solutions based on customer needs and provides timely after-sales services.

Overview of Oil-impregnated Bearings

Oil-impregnated bearings (often called sintered bearings or Oilite bearings) are self-lubricating, porous metal components manufactured via powder metallurgy. They contain large amounts of lubricant within their porous structure, which releases oil under pressure or heat to create a self-lubricating surface, particularly in automotive and domestic appliances.

Product Specification

We offers the following product specifications：

Item	Specification
Power Range	10W – 1200W
Voltage Range	AC 110–220V, 50/60Hz
Rated Speed Range	4000 – 15000 RPM
Size Range (Diameter)	44 mm – 95 mm
Shaft	Customizable based on drawings (diameter, length, and shape)
Front & Back Cover	Custom molding available according to customer requirements and drawings
Optional Components	Compatible with planetary gearbox, EMC, and overheat protector

Product advantages

Self-Lubrication The self-lubricating property is the hallmark feature of sintered oil-impregnated bearings. The porous structure acts as a reservoir, continuously releasing lubricant to reduce friction and wear. This not only enhances performance but also reduces the need for manual lubrication, saving time and resources.

Longevity and Durability These bearings are designed to withstand harsh operating conditions, including high temperatures and heavy loads. The consistent lubrication reduces wear and tear, extending the bearing’s lifespan and ensuring long-term reliability.

Low Maintenance Because they do not require frequent re-lubrication, sintered oil-impregnated bearings are an excellent choice for hard-to-access machinery or equipment that operates continuously. This reduces downtime and maintenance costs.

Cost-Effectiveness The extended service life and reduced maintenance requirements translate into significant cost savings over time. These bearings are often more affordable than other options requiring frequent attention.

Versatility Sintered oil-impregnated bearings are suitable for a wide range of applications, including electric motors, automotive components, household appliances, and industrial machinery. Their adaptability makes them a versatile solution for various industries.

High Wear-resistant Oil-impregnated Bearings

Application

Automotive Parts

Internal components throughout a vehicle contain powder metallurgy parts. From gears and bushings inside the engine and transmission to sliding door bushings and everything in between, PM is a common part of any vehicle.

Home Appliances

Commonly found in cooling fan motors in a variety of home appliances, but found in many home appliances wherever a bearing or bushing is needed. The oil in the bearing creates a product that rotates very quietly which is important for products used around the home.

Office Equipment

Printers, copies, scanners and more will often incorporate an oil-impregnated bearing. Along with the reduced noise level, the self-lubricating aspect of the bearings ensures a long life with little to no maintenance.

Material

Bronze

Sintered bronze oil-impregnated bearings have long service life, low operating noise, corrosion resistance, and are the most widely used.

Iron

Sintered iron oil impregnated bearings have the advantages of low price, excellent self-lubricating performance, fatigue resistance, and high strength. However, they have poor corrosion resistance and the lubrication effect is not as good as bronze.

Iron & Copper

Sintered bushings have good corrosion resistance and are cheaper than bronze sintered bronze bushings.

Manufacturing process

Oil-impregnated bearings are manufactured in the following manner.
Raw materials → Mixing → Molding → Sintering → Sizing → (machining) → Vacuum impregnation → Inspection → Packing → Shipping
The raw powder is selected and mixed in a mixer. Next, it is compressed from above and below in a press molding machine to create a green compact. The green compact is then fired in a sintering furnace to become a sintered body. After the sizing process, it is impregnated with lubricating oil in a vacuum oil immersion furnace (vacuum oil immersion) and is then completed.

Certificate

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Package & Delivery

1. Package: Standard export package or Custom

2. Delivery: By air express, by sea

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FAQ

Q: What are oil-impregnated bearings?

A: Oil-impregnated bearings are porous metal bearings that are pre-filled with lubricating oil. During operation, the oil is released to provide continuous lubrication.

Q: How do oil-impregnated bearings work?

A: The porous structure stores oil internally. As the bearing heats up during operation, oil is drawn to the surface, reducing friction and wear without external lubrication.

Q: What are the key advantages of these bearings?

A: They offer self-lubrication, low maintenance, quiet operation, and cost efficiency, especially in applications where regular lubrication is not practical.

Q: What materials are commonly used?

A: Typical materials include sintered bronze, iron-based alloys, and composite materials, selected based on load, speed, and environmental requirements.

Q: In which applications are they commonly used?

A: They are widely used in electric motors, household appliances, automotive components, office equipment, and small machinery.

Q: Do these bearings require maintenance?

A: Under normal operating conditions, they are maintenance-free. However, performance depends on proper application design and operating environment.

Q: What are the limitations compared to rolling bearings?

A: They generally support lower loads and speeds compared to ball or roller bearings, and are not suitable for high-impact or extreme conditions.

Q: How long is the service life?

A: Service life depends on load, speed, temperature, and environment, but they are designed for long-term operation without additional lubrication.

Q: Can they operate in high-temperature environments?

A: Yes, but the operating temperature must remain within the limits of the base material and lubricant. High temperatures may accelerate oil evaporation.

Q: Are custom sizes and designs available?

A: Yes, oil-impregnated bearings can be customized in terms of dimensions, material composition, and oil type based on application requirements.

Q: How do they perform in terms of noise?

A: They provide low-noise operation due to the absence of rolling elements, making them suitable for applications where quiet performance is required.

Q: Can different lubricants be used?

A: Yes, different types of oil can be impregnated depending on operating conditions such as temperature range, load, and speed.

Q: How are these bearings manufactured?

A: They are produced using powder metallurgy, where metal powder is compacted and sintered to create a Controlled porous structure.

Q: What factors should be considered when selecting one?

A: Key factors include load capacity, operating speed, temperature, shaft compatibility, and environmental conditions such as dust or moisture.

Q: What affects the cost of oil-impregnated bearings?

A: Cost depends on material type, size, production volume, customization requirements, and any additional processing or quality standards.

As one of the leading oil-impregnated bearings manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please feel free to buy bulk customized oil-impregnated bearings from our factory. Welcome to view our website for more information.

Oil impregnated Bearings For Micro Motors, Sliding Bushing, High Wear resistant Oil impregnated Bearings