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Powder Metallurgy Gears

Your Professional Powder Metallurgy Gears 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.

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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 Powder Metallurgy Gears

Powder Metallurgy (PM) gears are durable, high-precision mechanical components produced by compacting metal powders under high pressure and sintering (heating) them at high temperatures, rather than machining from solid metal. This near-net-shape process allows for complex geometries, high consistency, lower production costs, and reduced material waste, making them ideal for automotive and industrial applications.

Product Specification

We offers the following product specifications：

Material	Copper Infiltrated Materials Custom Blending of Powders Stainless Steel SS-304NI-30 Stainless Steel SS-316NI-25 Stainless Steel Brass CZ-1000 90/10 Brass	Straight Iron NI and CU Steels FN-0208 Nickel Steel FLN-4205 Loy Alloy Steel FC-0208 Copper Steel F-0008 Carbon Steel FLC2-4808 Sintered Hardened These materials can also be secondary heat treated.
Manufacturing Method	Powdered Metal Manufacturing
Press Tonnage	0.5 to 50 Tons
Outer Diameter	Up to 1.5″
Diametral Pitch	Up to 120
Component Types	Up to AGMA Class 8
Applications	Actuators Telecom Connectors Automotive	Medical Devices Robotic Surgery Power Tools

Product advantages

01/

High Dimensional Accuracy
One of the hallmark strengths of powder metallurgy is its ability to produce highly consistent geometry. When producing hundreds of thousands or even millions of identical gears, maintaining stable tolerances is crucial.

02/

Near-Net Shape Manufacturing
Since the gear forms during compaction, minimal machining is required. This reduces both labor and material costs. Complex shapes—especially multi-level gear profiles—can be created directly within the die.

03/

Exceptional Material Utilization
Traditional machining removes large portions of material, resulting in significant waste. Powder metallurgy, by contrast, uses over 95% of its raw material. This makes it one of the most sustainable and efficient metal-forming processes.

04/

Competitive Mechanical Properties
Although the density of powder metallurgy gears is slightly lower than that of fully machined steel gears, modern sintering and heat-treat processes can enhance strength, durability, and wear resistance.

05/

Economical Mass Production
Once the tooling is in place, powder metallurgy becomes extremely cost-effective for medium to high production volumes. This is particularly beneficial for industries like automotive and home appliance manufacturing, where millions of identical parts are needed annually.

06/

Design Freedom
Powder metallurgy enables engineers to create features that would be costly or impractical using conventional machining. Internal shapes, special tooth forms, hollow sections, and complex profiles can be integrated directly into the design.

Common types

Spur Gears

Module range: 0.5-6 mm
Maximum diameter: 110 mm (press capacity limited)
Minimum tooth count: 12 teeth (avoid undercut)

Helical Gears

Helix angle: Maximum 35° (ejection constraint from tooling)
Noise reduction: 5-10 dB lower than equivalent spur gear
Axial force consideration: Requires thrust bearing design

Internal Ring Gears & Planetary Systems

Ring gear diameter: 40-100 mm typical
Wall thickness minimum: 3 mm for structural integrity
Tooth count: 30-80 teeth

Bevel Gears

Cone angles: 20-70°
Straight bevel only (spiral requires complex ejection)
Maximum diameter: 80 mm
Applications: Differential side gears, power tool angle drives

Material

Most powdered metal gears are made from copper and iron alloys. Copper alloys include brass and bronze, while iron alloys include carbon steel, alloy steel, stainless steel, and cast iron.

Brass contains copper and zinc. Manufacturers can vary the amount of zinc to change the alloy's ductility.

Bronze can either be phosphorus or aluminum-based. They have higher strength, resistance to corrosion, and high wear resistance.

Carbon steel is highly machinable, has good wear resistance, and is easy to harden. It is also widely available, making them quite affordable.

Stainless steel alloys have manganese, nitrogen, sulfur, and silicon traces. Different types of stainless steel offer different levels of wear and corrosion resistance.

Application

Automotive Industry

Powder metallurgy gears are widely used in automotive engines, gearboxes, steering systems, and other components.

Industrial Machinery

In various industrial machinery and equipment, powder metallurgy gears are used to improve mechanical efficiency and life.

Electronic Products

Powder metallurgy gears are also used in some precision electronic equipment, such as hard disk drives and small motors.

Craftsmanship

Powder Production: Metal powders, such as steel, iron, or alloys, are created through methods like atomization or mechanical milling. These powders are essential for forming the desired metal properties in the final gear.

Compaction: The powdered metal is then placed into a die, where it is compacted under high pressure to form a gear shape. This step defines the basic shape and size of the gear.

Sintering: The compacted powder is then heated in a furnace at temperatures below the melting point of the metal, causing the particles to bond together and solidify, creating a dense, durable part.

Secondary Processes: Depending on the requirements, secondary processes like heat treatment, surface finishing, or machining may be applied to achieve the final desired properties, such as hardness, surface finish, and dimensional accuracy.

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 powder metallurgy gears?

A: Powder metallurgy gears are components manufactured by compacting metal powders into a die and sintering them at high temperatures, resulting in near-net-shape parts with minimal machining required.

Q: What are the main advantages over machined gears?

A: They offer cost efficiency in high-volume production, material utilization above 95%, and reduced secondary processing, making them ideal for large-scale applications.

Q: Are powder metallurgy gears suitable for high-load applications?

A: Yes, when properly designed and densified, they can handle moderate to high loads, especially in automotive systems, power tools, and industrial equipment.

Q: What materials are commonly used?

A: Typical materials include iron-based alloys, stainless steel, and alloyed powders with elements such as copper, nickel, or molybdenum to enhance strength and wear resistance.

Q: How accurate are powder metallurgy gears?

A: They provide good dimensional accuracy and repeatability. Secondary operations such as sizing or machining can further improve tolerances when required.

Q: Can complex gear geometries be produced?

A: Yes, powder metallurgy enables the production of complex shapes, including internal gears, helical gears, and multi-level structures, often in a single pressing operation.

Q: What is the typical production volume requirement?

A: Powder metallurgy gears are most cost-effective in medium to high production volumes due to tooling investment and process efficiency.

Q: How do these gears perform in terms of wear resistance?

A: They offer good wear resistance, especially when combined with heat treatment, surface densification, or impregnation processes such as oil infiltration.

Q: Are lubrication options available?

A: Yes, self-lubricating gears can be produced through oil impregnation, which enhances performance and reduces maintenance requirements.

Q: What industries commonly use powder metallurgy gears?

A: They are widely used in automotive systems, home appliances, electric tools, office equipment, and small gear motors.

Q: Can powder metallurgy gears be heat treated?

A: Yes, processes such as carburizing, quenching, and tempering can be applied to improve hardness, strength, and fatigue resistance.

Q: What are the limitations compared to forged or machined gears?

A: They may have lower density and strength compared to fully wrought materials, which can limit their use in extremely high-load or high-impact applications.

Q: How is quality consistency ensured?

A: Quality is controlled through strict powder selection, tooling precision, sintering process control, and final inspection to ensure repeatable performance.

Q: Can you provide customized gear solutions?

A: Yes, custom designs can be developed based on drawings or application requirements, including material selection, geometry optimization, and performance targets.

Q: What factors affect pricing?

A: Pricing depends on material type, part complexity, tooling cost, production volume, and any secondary operations such as machining or heat treatment.

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

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