16 Involute Spline Manufacturers in 2024
This section provides an overview for involute splines as well as their applications and principles. Also, please take a look at the list of 16 involute spline manufacturers and their company rankings. Here are the top-ranked involute spline companies as of April, 2024: 1.Metro Sprocket & Gear, Inc., 2.Goang-Chyan, 3.Gear Motions, Inc..
Table of Contents
What Is an Involute Spline?
An involute spline is an element whose tooth profile is formed using an involute curve. It is more precise than elements using general keyways and can transmit greater torque.
Spline is a fastening element that transmits power by meshing structures with external and internal teeth cut into each other. The fundamental principle is similar to that of gears (spur gears), where external teeth mesh together.
In Japan, an involute spline is standardized by JIS. When considering the assembly of an involute spline into a mechanical device, it is necessary to confirm that it conforms to the JIS standard.
Uses for Involute Splines
Compared to other splines like square splines and serrations, involute splines are easier and more precise to manufacture, making them widely used in mechanical devices.
For example, they are used in gearboxes for automobiles and motorcycles, where gears slide along the shaft to change speeds.
On the other hand, machining involute splines require a tooth height of a certain height, so it is not suitable for thin shafts or thin-walled shafts. In such cases, using a serrated type will enable stable rotation.
Principles of Involute Splines
The characteristic tooth profile of an involute spline is formed by drawing a specific curve known as an "involute curve."
Wrap a thread around the cylinders circumference and attach a pencil to the end of the thread. Unwind the thread from its taut state and draw the trajectory of the thread with the pencil. The curve created by repeating this process is the involute curve.
When two tooth profiles made in this way are meshed and rotated, the contact points of both tooth profiles move smoothly on the same curve. Because of these characteristics, the involute curve can be considered suitable for tooth profile curves.
Easy to manufacture and ensuring accuracy, involute splines are more versatile than conventional square splines. Since each spline type has its characteristics, selecting the appropriate type for each application is necessary.
List of 16 Involute Spline Manufacturers
*Including some distributors, etc.
Sort by Features
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- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
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- United States of America
- China
- Taiwan
- United Kingdom
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The Ohio Broach & Machine Co.
Involute Splines
Manufacturer Overview
The Ohio Broach & Machine Co., Established in 1956, is a custom manufacturer of broaching machines, cutting tools, holders, and fixtures. Horizontal internal machines, twin ram vertical machines, heavy-duty vertical machines, vertical surface machines, and table-up broaching machines are among the broaching machines. The Willoughby, Ohio-based company provides broach machine services such as rebuilding, contract production, welding & repair, troubleshooting, and 24-hour emergency sharpening. The markets served are the Automotive, defense, oil & gas, guns, and aerospace industries. The company has obtained ISO 9001:2015 accreditation.
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The Adams Company
Involute Splines
Manufacturer Overview
The Adams Company was established in 1883 and is located in Dubuque, Iowa, United States is a manufacturer of custom gears, shafts, and power transmission parts for various industrial and commercial applications. The company produces straight bevel, helical, spur & worm gears along with power transmission parts including sprockets, couplings, clutches & shafts that have applications in agriculture&construction machinery manufacturing industry, oil recovery equipment, winches, and industrial pumps. They also offer services including CNC blanking, hobbing, shaping, vertical machining, and gear shaving that are needed in the thread grinding, broaching, milling, tapping, and deburring systems.
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Stoffel Polygon Systems, Inc.
Involute Splines
Manufacturer Overview
Stoffel Polygon Systems, Inc., established in Duluth, Georgia in 1981 is a manufacturer of polygon connections. The company's product range includes CNC Machined Parts, 3D Printed Prototypes, Injection Molded Parts and sheet metal components fabricated to precise specifications. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company also provides services including Surface Grinding, Polygon Grinding, Cylindrical Grinding, technical support and customer service.
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Rush Gears, Inc.
Involute Splines
Manufacturer Overview
Formerly known as the Globe Gear Company and founded in 1919, Rush Gear Inc. is a manufacturer of custom gears for industrial and commercial applications. Rush Gear's facility is equipped with gear manufacturing technology, including CNC gear cutting machines, gear hobbing machines, and gear shaping machines. The company produces gears in a range of sizes, from small precision gears to large industrial gears that serve thousands of applications across industries such as agriculture, machine shops, manufacturing, robotics, and many more.
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Rathbone Precision Metals, Inc.
Involute Splines
Manufacturer Overview
Rathbone Precision Metals, Inc. established in Palmer, Massachusetts, in 1905 is a manufacturer of Cold Rolled Profiles, Cold Drawn Profiles, Shaped Wire, and Profiles. The company's product portfolio includes Cold Drawn Alloy Steel Gas Key for the Firearms Industry, Cold Rolled Steel Turbine Seal for the Power Generation Industry, Cold Drawn Carbon Steel Gear Profile for the Heavy Equipment Industry and Cold Drawn Stainless Steel Orthopedic Rods for the Medical Industry. The company serves markets including power generation, firearms, computer, medical, oil exploration and lawn and garden markets.
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Omni Gear & Machine Corp.
Involute Splines
Manufacturer Overview
Omni Gear & Machine Corp, since 1988, has been a manufacturer of precision-machined custom gears such as spurs, helical, clusters, worms, and sprockets out of materials such as brass, plastic, bronze, alloys, and fiber. The products have applications in graphical arts, food equipment, corrugated box and bag manufacturing, material handling, and custom machines. The Joliet, IL-based company offers customized gear fabrication, machining, shaping, gear grinding, and frequent product inspection during and after production.
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Grob, Inc.
Involute Splines
Manufacturer Overview
Grob, Inc., established in 1929, and headquartered in Grafton, Wisconsin, is a manufacturer of custom metalworking equipment and components. Their custom products, includes band saws, cold rolled steel products, blade welders, heat exchangers, and custom machine tools, that cater to industries like industrial manufacturing, machinery manufacturing, and manufacturing. Grob, Inc. is known for their quality machines that enhance productivity and accuracy in cutting and machining processes. They are ISO 9001:2015 certified, ensuring to provide stringent quality standards and excellent industrial solutions.
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Gear Motions, Inc.
Involute Splines
Manufacturer Overview
Gear Motions is a custom gear manufacturer for global OEMs. Founded in 1960 and headquartered in Syracuse, New York, with additional locations in Buffalo and Oliver Springs, Gear Motions has grown significantly since its founding. Initially a ten-man company serving primarily in the New England Area, they have since expanded through acquisitions of companies such as Nixon Gear, Gear Supply and Broaching, and Pro-Gear Co Inc. The company provides custom gear solutions for various custom and precision applications, offering products such as ground helical gears, spur gears, pump gears, timing pulleys, shafts and splines.
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Dayton Gear & Tool
Involute Splines
Manufacturer Overview
Dayton Gear, founded in 1946 and headquartered in Dayton, Ohio, is a manufacturer specializing in gears, pinions, and related products. Their diverse product range includes spur gears, helical gears, bevel gears, worm gears, racks, as well as pinions, gear housings, gear couplings, and gear reducers. Dayton Gear produces custom-designs gears to meet specific customer requirements, and cater to various industries, including automotive, aerospace, industrial, and agricultural. Their state-of-the-art manufacturing facility equipped with modern CNC machines allows them to offer additional services like gear repair, rebuilding, and inspection.
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Circle Gear & Machine Co., Inc.
Involute Splines
Manufacturer Overview
Circle Gear & Machine Co., Inc., established in 1951 and based in Illinois, USA, is a manufacturer of gears and gearboxes. The company manufactures a range of gears including bevel, helical and worm gear for automotive, construction, chemical and other industries. It provides reverse engineering for gear and gear boxes, from worn samples, prints or sketches, along with rebuild, repair and emergency services. The company has a quality management system in compliance with ISO 9001:2015, and has a complete inspection lab with CMM(Coordinate Measuring Machine).
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Metro Sprocket & Gear, Inc.
Involute Splines
Company Overview
Metro Sprocket & Gear, Inc. was established in 1985 and headquartered in Midlothian, Texas. The company manufactures custom gears, sprockets, and prototype parts used in agricultural machinery, construction equipment, power transmission equipment, machine tools, and other applications. The company’s product segments include splines and custom, helical, plastic, and worm gears. The company’s custom servicing options include several CNC and milling. Heat treating, milling, surface grinding, and other alteration options are also available.
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Hunting Dearborn
Involute Splines
Manufacturer Overview
Hunting Dearborn is an American contract manufacturer specializing in drilling and machining services originally established in 1960 as Dearborn Precision Tubular Products, Inc. before its acquisition by Hunting PLC in 2008. Based in Fryeburg, Maine, the company is equipped with a range of precision capabilities for tubular components fabrication, including deep bore and gun drilling to produce wire ways or fluid passages to various depths and tolerances. It also offers CNC machining capabilities (e.g. EDM, milling) as well as print part manufacturing and surface treatment services. Hunting Dearborn primarily serves clients in the power generation, space exploration, aerospace, and defense sectors.
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EP shaft collar Co., Ltd.
Involute Splines
Manufacturer Overview
EP Shaft Collar Co., Ltd. is a manufacturer, supplier, and exporter of mechanical products based in Hangzhou, Zhejiang, China. The company offers gearboxes and reducers to control the speed and torque of rotating shafts, sprockets used in chain and belt drive systems, industrial and conveyor chain, belts, and screw air compressors. Gears, racks, gearboxes, motors, and many other products are also available. Its products cater to a broad range of industries, including manufacturing, construction, transportation, and automation, serving various purposes related to power transmission, motion control, and mechanical operations.
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Goang-Chyan
Involute Splines
Manufacturer Overview
Goang-Chyan Co., Ltd., founded in 1970 and headquartered in Nantou County, Taiwan, is a manufacturer of various gears and related products. Its product portfolio includes spur gears, helical gears, gear racks, as well as inner gears, and spiral bevel gears. These precision-engineered components serve a diverse range of industries, including automotive, agriculture, construction, aerospace, and home appliances. The company has achieved ISO 9001 certification, highlighting its adherance to quality in gear manufacturing.
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American Gear, Inc.
Involute Splines
Manufacturer Overview
American Gear, Inc., since 1990, has been a manufacturer of fine and medium pitch gears and accessories such as worms, timing pulleys, involute splines, segments, and ratchets. The gear types are spur, helical, straight bevel, and miniature gears serving the aviation, commercial, film, office, and hobbyist industries. The company Prophetstown, IL, offers machining services such as CNC milling & turning, screw machining, heat hobbing & shaping, heat resting, and finishing services. The company produces products with ISO 9000 standards and is an American Gear Manufacturers Association member.
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Jinan Xin Ju Heng Auto Parts Co., Ltd.
Involute Splines
Manufacturer Overview
Jinan Xin Ju Heng Auto Parts Co., Ltd., established in 2005 and situated in Jinan, Shandong, China, is a manufacturer and supplier of auto parts. Formerly known as Jinan Shun Cheung Auto Parts Co., Ltd., and rebranded as Jinan Xin Ju Heng Auto Parts Co., Ltd. in 2010. The company specializes in providing replacement parts such as gear box parts, chassis parts, and engine parts for several truck brands such as Foton, Shacman, FAW, and Weichai. These components are serving spanning more than 20 countries, and some of its main markets include China, Saudi Arabia, Sudan, and the CIS countries.
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Involute Spline Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Metro Sprocket & Gear, Inc. |
15.4%
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| 2 | Goang-Chyan |
7.7%
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| 3 | Gear Motions, Inc. |
7.7%
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| 4 | Circle Gear & Machine Co., Inc. |
7.7%
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| 5 | Dayton Gear & Tool |
7.7%
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| 6 | Omni Gear & Machine Corp. |
7.7%
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| 7 | Grob, Inc. |
7.7%
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| 8 | The Ohio Broach & Machine Co. |
7.7%
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| 9 | Rathbone Precision Metals, Inc. |
7.7%
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| 10 | Rush Gears, Inc. |
7.7%
|
Derivation Method
The ranking is calculated based on the click share within the involute spline page as of April 2024. 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
- Jinan Xin Ju Heng Auto Parts Co., Ltd.: 2005 (19 years ago)
- American Gear, Inc.: 1990 (34 years ago)
- Goang-Chyan: 1970 (54 years ago)
Company with a History
- Rathbone Precision Metals, Inc.: 1905 (119 years ago)
- The Ohio Broach & Machine Co.: 1956 (68 years ago)
- Goang-Chyan: 1970 (54 years ago)
Involute Spline Manufacturers in United States
*Including some distributors, etc.
- The Ohio Broach & Machine Co.
- The Adams Company
- Stoffel Polygon Systems, Inc.
- Rush Gears, Inc.
- Rathbone Precision Metals, Inc.
- Omni Gear & Machine Corp.
- Grob, Inc.
- Gear Motions, Inc.
- Dayton Gear & Tool
- Circle Gear & Machine Co., Inc.
- Metro Sprocket & Gear, Inc.
Global Distribution of Involute Spline Manufacturers by Country
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
United States of America
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11 | 78.6% |
United Kingdom
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1 | 7.1% |
China
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1 | 7.1% |
Taiwan
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1 | 7.1% |
