All Categories
History
This section provides an overview for helical gears as well as their applications and principles. Also, please take a look at the list of 10 helical gear manufacturers and their company rankings. Here are the top-ranked helical gear companies as of April, 2025: 1.Power Transmission Group, 2.Stock Drive Products Sterling Instrument, 3.Toronto Gear Works.
Table of Contents
A gear is a toothed wheel designed to transmit torque through meshing with other gears. Helical gears, a common type of gear, have teeth cut at an angle, forming a helix.
Unlike spur gears that only transmit power with parallel axes, helical gears can also operate with intersecting axes. Their teeth are arranged diagonally, allowing for smoother meshing and continuous contact between teeth. This design reduces noise and vibration during operation but makes the manufacturing process more complex.
Helical gears are widely used in several industries due to their efficiency and smooth operation:
In automobile gearboxes, helical gears transmit power from the engine to the wheels. They facilitate different gear ratios for various speed ranges, contributing to smooth gear changes and quiet operation.
These gears are integral to many industrial machines, driving conveyor belts, and axis drives in CNC machines, ensuring precision and reliability.
Helical gears in aircraft transmit power in engine mechanisms and control systems, ensuring efficient motion transfer to propellers or fans and reliable operation in control systems.
Used in generators and turbines, helical gears transfer high-speed rotational power, playing a crucial role in effective power generation.
Helical gears work by meshing teeth cut in a helical pattern, providing a high meshing ratio for smooth and continuous engagement. The progressive contact of the teeth distributes force evenly, reducing sudden stress and ensuring smoother power transmission.
The helical design creates thrust forces during rotation, necessitating robust bearings to withstand these forces. Angular contact bearings are common, but thrust bearings may be used for heavy loads.
The helix of helical gears can be either right-handed or left-handed. The selection depends on the alignment of the input and output shafts. For parallel shafts, gears with the same helix direction are used, while intersecting or helically aligned shafts require opposite helix directions.
The helical angle, representing the axial advance per revolution, is crucial. A larger helical angle results in smoother gear meshing and quieter operation. Careful consideration of the rotation direction and helical angle is essential to ensure efficient power transmission and gear longevity.
*Including some distributors, etc.
Sort by Features
Sort by Area
Power Transmission Group, founded in Punxsutawney, Pennsylvania, is a manufacturer specializing in custom gears and gearbox repair. The company’s portfolio includes bevel gears, internal spline gears, bevel sprockets, segment gears, worm gear sets, and more. The company also utilizes CMM and SolidWorks 3D modeling software to reverse engineer old gears or design new custom ones. These products find applications in diverse sectors including oil, pneumatics, pulp and paper, machinery, and other industries. The company offers 24-hour emergency breakdown rush service and maintains a comprehensive inventory of materials including 4140 Steel, 8620 Steel, Cast Iron Class 40, and more.
Riley Gear Corporation is a manufacturer of precision and custom gearboxes established in 1946 and located in Buffalo, New York, USA. The company offers high-speed gears for applications requiring rapid gear operation, large-size gears for heavy-duty applications in the industrial sector, and precision gears for withstanding wear in demanding environments. It also offers its custom manufacturing capabilities for unique projects. The company chiefly serves clients in the defense, energy, and transportation industries.
Arrow Gear Co., founded in 1947 and headquartered in Downers Grove, Illinois, is a manufacturer of high-precision gears catering to aerospace and commercial industries. Its specialization lies in spiral bevel gears, and it also offers a comprehensive range of gearing solutions, including bevel gears, spur gears, helical gears, curvic couplings, and complete gearboxes. These products find applications across various machinery and equipment, facilitating power and motion transfer. The company holds several certifications in quality standards such as ISO 9001:2015, AS9100 REV D, and Nadcap for Heat Treating and Non-Destructive Testing.
SDP/SI, founded in 1950 and headquartered in New York, USA, is a manufacturer of mechanical components. The company provides mechanical components, engineering and manufacturing services for industrial and commercial applications. Its product portfolio consists of over 80,000 products, such as precision gears, bearings and couplings in various metals and alloys. It also provides custom solutions for motion control and small power transmission. The company is compliant with the RoHS and REACH standard, and has obtained AS9100D quality management certification.
Kohara Gear Industry Co., Ltd. (KHK), established in 1935, is a Japanese manufacturer headquartered in Kawaguchi, Saitama, specializing in the production of stock gears. The company’s product portfolio includes bevel, helical, internal, miter, and plastic gears. Additionally, it offers other types of stock gears such as screw, spur, and worm gears. The company also provides standard and circular pitch (CP) gear racks, gear couplings, as well as pre-lubricated bevel gear boxes designed to be freely mountable in any direction. Furthermore, the company offers customization options, allowing customers to choose specific gear tooth pitches, sizes, grades, and materials, such as metal and plastic.
Miller Plastic Products, Inc., founded in 1969 with headquarters in the USA, is a custom manufacturer of plastic tanks and components. The company's products include acid process tanks, kynar pipes and pipe fittings, dip pipes, headers, and manifolds. Miller Plastic Products, Inc. has expanded its product line to include PPE and other occupational health and safety accessories. The company also offers custom CNC machining, annealing services, custom plastic fabrication for plastic lab equipment, wet benches, sinks, counter tops, and cabinet systems.
W M Berg, founded in 1967 and based in Cudahy, Wisconsin, is a manufacturer and supplier of precision industrial parts. The company delivers ISO 9001:2015 certified products and services, including assemblies, bearings, belts & chains, couplings & shafts, gears, fasteners & hardware, pulleys & sprockets and more. W M Berg provides designing, developing, manufacturing and testing facilities to its clients in the aerospace, medical and motion control industries. Its distributors include Applied Industrial Technology and Motion Industries.
Ranking as of April 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Power Transmission Group |
22.7%
|
| 2 | Stock Drive Products Sterling Instrument |
13.6%
|
| 3 | Toronto Gear Works |
13.6%
|
| 4 | Riley Gear Corp. |
9.1%
|
| 5 | Moore Gear & Manufacturing Co. |
9.1%
|
| 6 | Arrow Gear Co. |
9.1%
|
| 7 | W.M. Berg |
9.1%
|
| 8 | Federal Gear and Machine. |
4.5%
|
| 9 | Miller Plastic Products, Inc. |
4.5%
|
| 10 | KHK |
4.5%
|
Derivation Method
The ranking is calculated based on the click share within the helical gear page as of April 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
6 | 75.0% |
|
Japan
|
1 | 12.5% |
|
Canada
|
1 | 12.5% |
185 products found
185 products
Yamaichi Special Alloy Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
Standard Response
Material: CAC703 φ133xφ45x47.5 Approx. 3.4kg
Kouki Kasei Co., Ltd.
120+ people viewing
Last viewed: 21 hours ago
Very Fast Response
■Features ・Precision injection compression molding makes it possible to increase the thickness of the web and maintain gear accuracy at the same t...
Goto Gear Co., Ltd.
130+ people viewing
Last viewed: 10 hours ago
Kaneko Gear Industry Co., Ltd.
180+ people viewing
Last viewed: 4 hours ago
■Achieved short delivery times and low costs by using the gear cutting method that uses existing blades and jigs. We use the Gleason single-side me...
Muro Corporation Co., Ltd.
170+ people viewing
Last viewed: 8 hours ago
The spline shape of the outer diameter gear and inner diameter is realized by press processing. ■Succeeded in pressing the inner diameter part, wh...
Muro Corporation Co., Ltd.
170+ people viewing
Last viewed: 23 hours ago
We succeeded in converting the internal spline shape from the conventional sintering method to precision press processing. ■Applications transmiss...
Goto Gear Co., Ltd.
100+ people viewing
Last viewed: 15 hours ago
Saito Koki Co., Ltd.
380+ people viewing
Last viewed: 10 hours ago
■What is worm gear? A cylindrical ``worm'' with screw-like spiral teeth and a ``worm wheel'' which is a helical gear (helical gear) are meshed at r...
Senshu Bearing Service Co., Ltd.
570+ people viewing
Last viewed: 21 hours ago
Very Fast Response
■Summary A slew drive is an assembly (component) of a worm-type swivel ring and worm shaft sealed in a housing. Since it has an integrated structur...
9 models listed
Tescom Co., Ltd.
230+ people viewing
Last viewed: 6 hours ago
■FV series FV series stainless steel worm gearbox is a standard worm gear. Designed to meet the latest standards in the food industry. The design f...
4 models listed
Heiwa Jitsugyo Co., Ltd.
90+ people viewing
A highly versatile standard A type sprocket. The basic material is general structural rolled steel, but materials such as ordinary steel and carbon...
Saito Koki Co., Ltd.
260+ people viewing
Last viewed: 1 hour ago
A pair of gears used to transmit power between two axes that neither intersect nor are parallel. Basically, they intersect at an axis angle of 90°....
Goto Gear Co., Ltd.
90+ people viewing
Last viewed: 3 hours ago
Spiral gears are useful gears that transmit power between two intersecting axes. Standard spiral gears are manufactured based on orthogonal interse...
Yamaichi Special Alloy Co., Ltd.
80+ people viewing
Standard Response
PBC2
Goto Gear Co., Ltd.
100+ people viewing
Last viewed: 5 hours ago
Rack gears are useful for transmitting linear power such as rotating power to linear motion, linear power to rotary motion, parallel reciprocating ...
Saito Koki Co., Ltd.
230+ people viewing
Last viewed: 21 hours ago
A pair of conical gears used to transmit power from two intersecting axes. The shapes of tooth streaks include straight, curved, and hashedral. Our...
Soritz Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
This is a compact, low-cost, low-noise NEW series motorized speed reducer that is used in a wide range of fields.
Muro Corporation Co., Ltd.
170+ people viewing
Last viewed: 6 hours ago
By switching from the conventional "sintering + induction hardening" to "pressing + carbonitriding", we have achieved cost reduction and weight red...
AMTECH LIMITED.
130+ people viewing
Last viewed: 13 hours ago
Very Fast Response
■Summary The screw gear dimension calculation software calculates the dimensions of screw gears and outputs CAD data of tooth profile meshing and 2...
Heiwa Jitsugyo Co., Ltd.
90+ people viewing
This product is a standard A-type sprocket with a boss welded to it and processed into the shape of a B-type sprocket. The B-type sprocket with a l...
Muro Corporation Co., Ltd.
150+ people viewing
Last viewed: 3 hours ago
We have achieved high precision machining of the outer periphery sensing part to increase the diameter. ■Applications engine crankshaft
Goto Gear Co., Ltd.
100+ people viewing
Last viewed: 7 hours ago
Rack gears are useful for transmitting linear power such as rotating power to linear motion, linear power to rotary motion, parallel reciprocating ...
AMTECH LIMITED.
140+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Summary A threaded gear pair of external gears will mesh if both gears have involute tooth profiles, but if the internal gear and external gear ar...
Fuji Electrode Industry Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
Fast Response
5.0 Company Review
Since it is a type without a motor, the input shaft rotation speed can be conveniently selected. This format is trouble-free and can be used in a w...
Fuji Electrode Industry Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
Fast Response
5.0 Company Review
There are also models with brakes, and there are many models with different models, KW, and speed ratios depending on the application. We also prod...
![[Reduction gear] Glessner orthogonal reduction gear DYNA GEAR-Nidek Drive Technology Co., Ltd.](https://metoree.s3.ap-northeast-1.amazonaws.com/img/products-new/30042072024073126.png)
Nidek Drive Technology Co., Ltd.
200+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Precision orthogonal reducer for servo Manufactured by Nidec Graessner (Germany) ■Features Orthogonal, high precision, thin and compact, high out...
Fuji Electrode Industry Co., Ltd.
110+ people viewing
Last viewed: 1 day ago
Fast Response
5.0 Company Review
There are also models with brakes, and there are many models with different models, KW, and speed ratios depending on the application. We also prod...
![[Reduction gear] Glessner Orthogonal reduction gear EVO GEAR-Nidek Drive Technology Co., Ltd.](https://metoree.s3.ap-northeast-1.amazonaws.com/img/products-new/30042072024073128.png)
Nidek Drive Technology Co., Ltd.
170+ people viewing
Last viewed: 4 hours ago
Very Fast Response
■Precision orthogonal reducer for servo Manufactured by Nidec Graessner (Germany) ■Features Orthogonal, thin and compact, high output, high rigidi...
Robotena Co., Ltd.
290+ people viewing
Last viewed: 23 hours ago
Contains 2 24T flat gears, 2 worm gears, and 2 shafts.
Robotena Co., Ltd.
360+ people viewing
Last viewed: 1 day ago
module 0.5.
4 models listed
