Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of copper alloy gear in China. If you're going to wholesale bulk cost-effective copper alloy gear made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
As a leading manufacturer of precision drive components, Hansheng Automation specializes in high-quality copper alloy gears tailored to meet demanding industrial requirements. From precision bronze worm gears for high-torque gearboxes to brass pinion gears for medical instruments, we deliver OEM/ODM components conforming to ISO Grade 5 standards.
Feature
Good strength and durability
Copper alloy can improve its strength and hardness by adding elements such as Zn, Sn, Pb, etc., which makes it can withstand higher load and stress. For example, the strength of special aluminum bronze is higher than alloy steel and its hardness is near alloy steel. Special aluminum bronze is widely applied in force structural components and transmission parts, etc., such as the transmission shaft gear of high-speed trains. Copper alloy gear is suitable for transmission situations with high load and high precision, such as industrial machinery, ship equipment, etc.
Excellent wear resistance and friction-reducing property
Copper material has a low surface friction coefficient (about 0.1~0.2, steel is 0.3~0.5), it still can maintain lower wear rate when there is a lack of lubrication (self-lubricating property). So, copper alloy gear is suitable for scenarios which is unable to add lubricant frequently. Some copper alloys (such as tin bronze, aluminum bronze) have excellent wear resistance, they can maintain tooth surface flat in the long-term process of friction. Copper alloys can reduce wear and deformation and extend the service life of gears, which is especially suitable for transmission system of frequent start-stop or high-speed operation.
Good corrosion resistance
Copper alloy gear exhibits good corrosion resistance to atmosphere, fresh water, seawater, and certain chemical agent. Copper alloy gear can work stably in harsh environments and reduce gear damage and performance degradation caused by corrosion, which is commonly used in fields such as marine engineering and chemical equipment.
Good Processability
Copper alloy is easy to cut, forge, cast, and weld and the processing technology is mature, so it is convenient for copper alloy to manufacture gears of various shapes and accuracies. Copper alloy gear can meet different design requirements and has lower machining cost.
Non-magnetic properties
Copper alloy is non-magnetic and it is suitable for the situation, which is magnetic sensitive, such as electronic devices, medical equipment, etc. Copper alloy gear can avoid performance issues caused by magnetic interference.
Good thermal conductivity
Copper alloy gear has good thermal conductivity and can quickly dissipate the heat generated during gear transmission. It can prevent performance degradation or damage caused by overheating, especially suitable for transmission systems of high speed and high power.
Good dimensional stability
Copper alloy gear has smaller dimensional changes under different temperatures and humidity conditions. It can guarantee transmission accuracy and stability of gears and transmission errors caused by dimensional changes.
parameter
| Copper Alloy Gear Specifications | Technical Parameter Ranges & Options |
| Material Grades Supported |
Bronze: Tin Bronze (QSn6.5-0.1, QSn7-0.2, C90700), Aluminum Bronze (QAl9-4, QAl10-4-4, C95400), Phosphor Bronze (C51000, C54400) Brass: Yellow Brass (H62, H65, C36000), High-Strength Brass (ZCuZn25Al6Fe3Mn3) |
| Gear Types Available | Spur Gear, Helical Gear, Worm Gear (Worm Wheel), Bevel Gear, Internal Gear, Pinion Gear |
| Module Range | 0.1 to 5.0 Module |
| Outer Diameter Range | 3 mm to 300 mm |
| Precision Class | ISO Grade 5, ISO Grade 6, DIN 6 |
| Pressure Angle | 14.5°, 20° (Custom pressure angles upon request) |
| Bore Configuration | Finished Bore, Taper Bore, Splined Bore, Keyway & Set Screw Options |
| Hardness Range | Depending on alloy grade (e.g., Aluminum Bronze: HB 150-180) |
| Surface Treatment Options | Chromium Plating, Nickel Plating, Passivation, Sandblasting, Anti-oxidation Treatment |
Process
Blank Preparation
Selecting appropriate copper alloy materials (such as tin bronze, aluminum bronze, etc.), and blank is manufactured through casting or forging. Casting blanks are suitable for complex shapes, forging blanks can improve their strength and toughness.
Rough Machining
Removing rough allowance by adopting processes such as turning and milling, preliminarily forming tooth profile and reserving machining allowance.
Heat Treatment
To improve cutting performance and mechanical properties, selecting heat treatment methods based on the characteristics of copper alloys, such as annealing, solution treatment, etc.
Gear Cutting
Giving priority to using generating methods such as hobbing and shaping to process and ensuring tooth profile accuracy. For high-precision gears, additional finishing processes such as gear shaving and gear grinding can be incorporated.
Surface Treatment
Copper alloy gears often adopt surface treatment processes such as chromium plating and nickel plating, improving wear resistance and corrosion resistance.
Fine Machining And Inspection
Performing precision machining and inspection on tooth profile, tooth pitch, surface roughness, etc. Ensuring copper alloy gear meet design requirements.
Selecting the Right Copper Alloy for Your Gear System
At Hansheng, we match alloy properties to your specific operational conditions:
Aluminum Bronze Gears
Offers the highest mechanical strength and hardness among copper alloys, comparable to alloy steels. It exhibits exceptional fatigue and wear resistance. Best For Heavy-duty transmission shafts, high-load industrial machinery, and high-speed train structural parts.
Tin Bronze & Phosphor Bronze Gears
Outstanding wear resistance and excellent self-lubricating properties. They maintain a very low friction coefficient under poor lubrication.Best For Worm wheel drives, speed reducers, and continuous-operation rotating systems where steel-on-bronze meshing is required.
Brass Gears
Excellent machinability, non-magnetic properties, and highly cost-effective. However, they have lower hardness compared to bronze. Best For Low-load, high-precision scenarios such as electronic devices, medical equipment, office automation, and precision instruments.
Application
FAQ
Q: How about the price of copper alloy gears?
A: The price of copper alloy gears varies according to alloy composition, specifications, and machining accuracy, etc. In general, the price of ordinary brass gears is relatively low, alloy gears containing precious metals (such as nickel and tin) are relatively expensive.
Q: How about the strength and hardness of copper alloy gears?
A: The strength and hardness of copper alloy gears vary depending on the alloy composition. Generally, brass gears have a lower hardness and are suitable for low load. Phosphor bronze and aluminum bronze gears have higher hardness, better wear resistance and corrosion resistance, which can withstand higher load. Specific hardness value needs to refer to the material standard of specific grade.
Q: How to maintain copper alloy gears?
A: Regularly checking copper alloy gear for wear, lubrication condition, and whether the fasteners are loose.
Keeping working environment clean, preventing impurities from entering the gear meshing surface.
Selecting appropriate lubricant based on the working conditions, adding or replacing it regularly.
Avoiding overload operation of gears to prolong their service life.
Q: Why is bronze commonly paired with steel worms in gear reducers?
A: Pairing a bronze gear (worm wheel) with a hardened steel worm is an industry standard because copper alloys have excellent anti-friction and self-lubricating properties. In a sliding mesh environment like worm gearing, the softer bronze material accommodates friction smoothly, reducing heat generation and protecting the expensive steel worm from severe galling and wear.
Q: Which copper alloy should I choose for high-corrosion marine environments?
A: For marine or chemical washdown environments, we highly recommend Aluminum Bronze or specialized Tin Bronze. These alloys form a protective, adhesive oxide layer on their surface, offering exceptional resistance to seawater corrosion, salt spray, and organic acids.
Q: What are your tolerance capabilities for custom copper gears?
A: Through our advanced CNC gear hobbing and shaving centers, we can control dimensional tolerances within ±0.005mm and achieve precision standards up to ISO Grade 5 (DIN 5/JIS 1), ensuring highly quiet and vibration-free transmission.
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