BLUE Powder Metallurgy Gear in China
Powder metallurgy gears from BLUE are precision-pressed into exact sizes and shapes by our advanced powder compaction press, reducing the need for secondary machining. We have the capability to manufacture a wide variety of sintered gears, including spur gears, helical gears, bevel gears, double gears and planetary gears.
Why Choose BLUE?
BLUE is your trusted manufacturer of high-quality powder metallurgy gears, providing strict quality control, free mold design, fast delivery, and competitive price from China.
BLUE High Quality Standards
BLUE assures your product quality with ISO 9001:2015 certified quality management system. We provide a one-year warranty on your powder metal gears.
Standard Sintered Metal Gears Shop
We have a wide range of standard sintered metal gears in stock for quick delivery. All of these sintered metal gears come with no mold fees.
Download Sintered Gears Product List
Discover BLUE’s full range of powder metallurgy standard sintered gears. Download our free product list to find the exact match for your requirements.
Powder Metallurgy Gears Manufactured by BLUE
Here are various powder metallurgy gears we have manufactured, including spur gears, helical gears, bevel gears, oil pump gears, double gears, and planetary gears.
Sintered Gears
Sintered gears are formed by pressing metal powder in one step, without the need for secondary processing.
Sintered Metal Gears
Sintered metal gears require heat treatment process, and the surface hardness can reach above HRC50.
OEM Sintered Gears
OEM sintered gears use metal powder as raw material, and the material utilization rate can reach more than 95%.
Powdered Metal Bevel Gears
Powder metal bevel gears have a conical shape and transmit rotational motion between intersecting shafts at an angle.
Powdered Metal Spur Gears
Powdered metal spur gears transmit motion and power between parallel shafts. They are easily pressed into precision shape.
Powder Metal Helical Gears
Powdered metal helical gears feature teeth that are angled (helix) with the gear axis, which allows for smooth, quiet operation.
Factory Sintering Gears
The quality of powder metallurgy gears produced by Chinese factories is already quite high, comparable to your local suppliers.
Sintered Powder Metal Gears
Sintered powder metal gears allow for flexible material composition adjustments to meet the performance requirements of various parts.
Oil Pump Gears
An oil pump gear is a key component in oil pump that pressurize and circulate oil throughout an engine's lubrication system.
BLUE's Custom Powder Metal Gears Specifications
BLUE’s ability include but are not limited to:
Diameter: 5mm to 250mm is available.
Height: 5 to 100mm is possible.
Geometries: multi-step, helical, bevel, flanged gears are all available.
Helical gears up to a 20 degree helix angle.
All BLUE’s sintered cylindrical gears can reach DIN 3961 grade 8.
After heat treatment, the surface hardness of our sintered gears can reach 560~660 HV10(HRC 53~58).
We can improve the tooth surface accuracy of sintered gears by honing technology
Powder Metallurgy Gear Design Advices
- Uniform wall thickness:
Design sintered gears with uniform wall thickness to ensure uniform density distribution during pressing and sintering
- Thickness variation:
Multi-link gears should avoid sharp changes in cross-sectional thickness
- Weight reduction holes
When the outer diameter of the gear is large and weight reduction is required, circular weight reduction holes are better and easier to process and install
- Tooth shape
The root and tip edges of involute gears are optimized with rounded transition arcs, which improve root strength and reduce operational noise.
Benefits of Powder Metallurgy Gear
1. Cost-effective for high-volume production of powder metallurgy gears.
2. Sintered gears have tight tolerances and good surface finish after sizing.
3. Fewer processing steps: Most powder metallurgy gears are pressed and formed in one step, with less secondary processing. Machined gears require more than a dozen processes.
4. Few materials waste: The utilization rate of powder metal materials is about 95%, while that of machined gears is only 70%.
5. Consistency across batches: Sintered metal gears are molded, with carbide molds pressing hundreds of thousands of gears, achieving high product quality consistency.
Standard Oil Pump Gear
BLUE is committed to developing powder metallurgy standard parts to achieve free molds and fast production.
We cooperate with many factories in China and have the largest powder metallurgy standard parts shop in China.
Our oil pump gears are of many types and models, and you can find gears for various engine oil pumps among them.
Free download of our standard oil pump gears.
Powder Metallurgy Gear Materials
Our team not only has a deep understanding of powder metallurgy gear manufacturing, but also has extensive expertise in PM materials.
Common materials for powder metallurgy gears include MPIF FN-0205, FD-0205, FN-0205-80HT, as well as JIS SMF5030 and SMF5040.
When powder metal gears face impact loads, the gear teeth are prone to breakage. To address this, materials with better toughness, such as carburized and quenched low-carbon steel, should be used.
For high-speed closed transmission gears, high tooth surface hardness is essential. Medium carbon steel with surface quenching is a suitable choice.
When compact structure and high wear resistance are required for sintered gears, alloy steel is the preferred option.
Mechanical Properties of Sintered Gear Materials
The following are some commonly used mechanical properties of powder metallurgy gear materials.
Model | State | Density g/cm3 | TS Mpa | FL Mpa | Apparent Hardness |
FC-0208 | Sintered Hardened | 6.7 6.8 | 410 620 | 160 240 | 73HRB 35HRC |
FN-0205 | Sintered Hardened | 6.9 6.9 | 340 830 | 120 240 | 59HRB 29HRC |
FX-2008 | Sintered Hardened | 7.3 7.3 | 550 690 | 160 190 | 90HRB 36HRC |
FD-0205 | Sintered Hardened | 7.1 7.1 | 610 1030 | 220 450 | 80HRB 38HRC |
Powder Metallurgy Gears Manufacturing Process
Powder metallurgy is a precision manufacturing process with a continuing and stable accuracy of up to 0.01mm, which requires strict control at each stage to ensure the quality of the final part. Any deviation or error during the process may result in the rejection of the entire batch.
Designing
Mold design is a critical process that must consider the desired part geometry, material properties, production volume, and cost-effectiveness.
Tooling
Powder metallurgy tooling includes upper and lower punches, die, and core rod. The mold needs to have excellent strength, hardness and wear resistance.
Mixing
Mixing is the process of blending metal powder with binders to improve its uniformity and fluidity, promoting better material consistency.
Compacting
Conpacting is a process that presses metal powder into mold cavity through powder compaction machine to get a green compact part.
Sintering
Sintering heats the green compact to a temperature below its melting point in a controlled atmosphere to obtain the desired mechanical properties.
Sizing
Sizing corrects dimensional deviations after sintering and enhances product accuracy. It requires an additional, simpler set of molds compared to the forming mold.
Tumbling
Tumbling removes burrs and flash from a part's surface by vibrating it with abrasive media, such as stone or ceramic, resulting in a smoother finish.
Machining
Machining can achieve complex shapes that cannot be pressed by powder metallurgy, such as transverse holes and screw threads.
Blackening
Blackening process, or steam treatment, forms an oxide layer to prevent rust and increase hardness, offering a cost-effective solution.
Hardening
Hardening enhances the material's strength and hardness through carburizing or nitriding, resulting in improved wear resistance and fatigue life.
Inspecting
The inspecting process is always a critical step that ensures quality and performance through BLUE inspection standards before shipping.
Packaging
BLUE's packaging process uses anti-rust paper, vacuum, blister and other methods to ensure that the product is intact during transportation.
Equipment for Powder Metallurgy Gear
BLUE has a complete range of advanced powder metallurgy production equipment, including 25T to 1000T compaction press, conveyor belt sintering furnace, vacuum sintering furnace, sizing press, CNC machining equipment, Machine Center, hardening furnace, etc.
Applications of Powder Metal Gears
BLUE’s expertise in designing and manufacturing a wide variety of powder metallurgy molds enables our customers to produce high-quality and precision powder metal parts with complex shapes and features.
Powder Metallurgy Applications in Aerospace
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Powder Metallurgy in Automotive Applications
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Powder Metallurgy Applications in Motorcycles
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Metal Injection Molding (MIM) Medical Applications
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Powder Metallurgy Applications in Power Tools
Power tools make everyday work tasks a lot easier. Today, power tools are moving towards being compact, lightweight, and safe. This naturally goes hand in
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