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 Grinding Gear Process: The indispensable part of industrial gearbox manufacturing

Grinding Gear Process: The indispensable part of industrial gearbox manufacturing


Whether or not gear grinding is performed in the production of industrial gearboxes. That depends on the requirements of the particular gearbox and the manufacturer’s strategy. In some cases, gear grinding is indispensable. especially for high-precision, high-performance or high-torque applications. As we have learned, gear grinding is an expensive process. Because it requiries specialized equipment and highly skilled operators. Some manufacturers may seek to reduce production costs. especially in high volume production. and therefore opt for alternative machining methods such as hobbing or shaping. KONIC with more than 20 years of experience in OEM industrial gearboxes. today we will explain in detail the role of the gear grinder as an integral part of industrial gearboxes.

Table of Contents

The Gear Grinding Machine Working Principle

Gear Grinding Machine is a mechanical equipment specialized in gear processing. its working principle is through the relative motion between the rotating grinding wheel. and the gear to accurately grind the tooth shape of the gear and the gear surface. The process allows for the production of gears with tight tolerances. making them suitable for high-performance and precision applications. Careful control, monitoring, and inspection are essential. to maintain the highest quality standards in gear manufacturing.


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Benefits of Gear Grinding Process in industrial gearbox manufacturing

The gear grinding process offers several significant benefits in industrial gearbox manufacturing. making it a preferred method for producing high-precision gears. The key advantages of using gear grinding in industrial gearbox manufacturing include:

Benefits of Gear Grinding Process in industrial gearbox manufacturing

→ High Precision and Accuracy:

Gear grinding well known for its exceptional precision and accuracy. It can achieve tight tolerances and maintain precise tooth profiles. resulting in gears that perform reliably and efficiently within industrial gearboxes.

→ Improved Surface Finish:

Gear grinding produces a fine and consistent surface finish on gear teeth. This reduced surface roughness minimizes friction and wear. which is essential for enhancing the longevity and efficiency of the gearbox.

→ Customization and Versatility:

Gear grinding adapted to produce a wide range of gear types. including spur gears, helical gears, bevel gears, and more. This versatility makes it suitable for various industrial gearbox designs and applications.

→ Reduced Noise and Vibration:

Gears produced through gear grinding exhibit low noise and vibration characteristics. The precision of the process results in minimal gear meshing imperfections. leading to quieter and smoother gearbox operation.

→Tight Tolerance Control:

Gear grinding allows for the consistent and precise control of gear tooth dimensions. such as pitch, tooth profile, and backlash. This tight tolerance control is essential for ensuring proper gear meshing. and optimal gearbox performance.

→ Consistent Tooth Geometry:

Gear grinding maintains the accuracy of the gear’s tooth geometry. This consistency is crucial for preventing issues like uneven load distribution and misalignment.

→ Enhanced Gearbox Performance:

The benefits of gear grinding contribute to improved overall gearbox performance. including increased efficiency, reliability, and longevity, leading to lower operating costs.


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Types of Gear Grinding Methods  

Gear Profile Grinding:

This is the most common gear-grinding method. and it’s used for the high-precision grinding of external gear teeth. The gear mounted on a workpiece spindle. while the grinding wheel mounted on a grinding spindle. The two spindles rotate, and the grinding wheel shapes the gear teeth to the required profile.

Gear Grinding Process in industrial gearbox manufacturing

Gear Generating Grinding:

This method used for producing spur and helical gears. The process combines gear generation and profile grinding. A grinding wheel with a worm thread or form disc used to produce the gear teeth. This method is suitable for high-precision and high-volume gear production.

Threaded Wheel Grinding:

In this method, a threaded grinding wheel used to produce gear teeth. It’s often used for producing high-precision, fine-pitch gears. The grinding wheel shaped to the reverse profile of the gear teeth. and as the wheel and the gear mesh, the gear teeth are precisely ground.

Bevel Gear Grinding:

The Bevel gears, which have conical tooth geometry, require specialized gear grinding methods. And bevel gear grinding can involve various techniques. such as spiral bevel gear grinding, generating bevel gear grinding. and continuous generating bevel gear grinding. depending on the specific requirements of the bevel gear.

Honing of Gear Teeth:

Honing is a finishing process that is sometimes used after gear grinding. to improve the surface finish and reduce noise and vibration. It involves rotating a honing tool inside the gear teeth. which removes a minimal amount of material to improve surface quality.

Form Grinding:

Form grinding used to grind complex shapes, including non-standard gear and non-circular gears. Specialized grinding wheels used to shape gears to the desired, non-standard profile.

Continuous Dress Grinding:

In this method, the grinding wheel dressed continuously while in contact with the gear. This is often used for high-production volume. and provides a consistent wheel profile, resulting in high-quality gears.


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Gear Grinding Applications For Concrete Mixer Reducer

Among the mixer reducers manufactured by KONIC Gear. our reducers have been selling well for many years. due to their high quality, reliability, and outstanding performance. During the production of our concrete mixer reducers. we use gear-grinding machines to grind the gears. Through the grinding operation, we are able to precisely carve each tooth. to ensure that the tooth shape and pitch exactly match the design specifications. Accurately ground gear teeth not only improve gear transmission efficiency. but also reduce noise. The precise size, shape, and surface quality of KONIC’ strictly controlled gears. They are carefully monitored and inspected to ensure reliable performance and long life.

planetary reduction gearbox

What is the Gear Grinding Process ?

The gear grinding process is a manufacturing method. used to produce high-precision gears with closely controlled dimensions and fine surface finishes. It is typically employed to improve the accuracy, tooth profile, and surface quality of gears. Here is an overview of the gear-grinding process:

Workpiece Setup:

The gear to the ground is securely mounted on a spindle, which can rotate the gear. The gear’s position adjusted to ensure proper meshing with the grinding wheel.

Tool Setup:

A specialized grinding wheel, typically made of abrasive materials. like aluminum oxide or cubic boron nitride (CBN), That used as the cutting tool. The grinding wheel mounted on a separate spindle and positioned opposite the gear, ready for engagement.

Meshing and Relative Motion:

The gear and grinding wheel brought into contact. so that their surfaces mesh together. The gear is set in motion, typically rotating. while the grinding wheel is precisely moved towards it. creating a controlled relative motion. This relative motion allows the abrasive grains on the grinding wheel to cut into the gear teeth.

Material Removal:

As the abrasive grains on the grinding wheel come into contact with the gear’s teeth. they remove material from the gear. The depth of cut and other parameters are carefully controlled to achieve precise material removal. This shaping process is what gives the gear its final desired profile and tooth geometry.

Control and Monitoring:

The entire grinding process is closely monitored. and controlled to maintain the necessary precision. Machine settings, including the depth of cut, the speed of the grinding wheel. and the feed rate, adjusted as needed to maintain the required precision and accuracy. Feedback systems, such as sensors and computer controls. help maintain tight tolerances and prevent over- or under-grinding.

Cooling and Lubrication:

The grinding process generates heat. so a cooling and lubrication system used to control the temperature. This system may use coolants to maintain the appropriate temperature. and lubricants to reduce friction and wear.

Inspection and Quality Control:

After the grinding , the finished gear subjected to rigorous inspection using various measurement. and inspection tools to ensure it meets the required specifications. Parameters such as tooth profile, surface finish. and other critical dimensions are closely examined.

After Gear Grinding high-precision gears

Final Steps:

Depending on the specific requirements of the gears. additional processes such as heat treatment, honing. or coating applied after grinding to further enhance the gear’s performance and durability.


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If you have more questions about the production of industrial gearboxes. KONIC welcomes your inquiries, our engineers will provide professional technical advice. look forward to your contact! cnkonic@konic-gearbox.com


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