Marples Gears, Inc. is a premier manufacturer and service provider specializing in high-precision fine-pitch gears and machined components. Established in 1942 and headquartered in San Gabriel, California, the company brings over 70 years of expertise to the aerospace, defense, medical, and instrumentation sectors. As an AS9100 certified and ITAR registered manufacturer, they maintain a reputation for excellence, notably supplying critical components for NASA's JPL Mars Rovers (Spirit, Opportunity, and Curiosity) and major industry leaders like Boeing and Lockheed Martin. The company operates a sophisticated facility equipped with 4, 5, and 6-axis CNC machining centers, enabling tolerances within 0.0001 inches. Their extensive product portfolio includes spur, helical, worm, planetary, and internal gears, as well as shafts, splines, pulleys, and jet engine parts. Manufacturing capabilities span from 8 DP to 200 DP and metric pitches from 0.14 MOD to 2.75 MOD. Beyond production, Marples Gears offers comprehensive engineering advice, custom gear cutting, hobbing, broaching, and rigorous inspection services. With a dedicated team of approximately 11 to 50 employees, the company remains a vital Tier 2 supplier for high-stakes applications requiring exact movement and positioning.
OEM manufacturerOffers OEM services for customized brand manufacturing.
Product customizationOffers full customization for design and features.
Industry association memberMember of AGMA association.
High-tech enterpriseRecognized as a high-tech or innovative enterprise.
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CNC Machining
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CNC Machining is a process used in the manufacturing sector that involves the use of computers to control machine tools. Tools that can be controlled in this manner include lathes, mills, routers and grinders. There are many advantages to using CNC Machining…
Gear Cutting
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Gear cutting is any machining process for creating a gear, such as hobbing, broaching, milling, or grinding. Such cutting operations may occur either after or instead of forming processes such as forging, extruding, investment casting, or sand casting…
Gear Cutting
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Gear cutting is any machining process for creating a gear, such as hobbing, broaching, milling, or grinding. Such cutting operations may occur either after or instead of forming processes such as forging, extruding, investment casting, or sand casting…
Engineering
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From a simple two-piece gearbox to a multi-stage planetary gear system, Marples engineering is here to make your life easier and your gears better. We can make recommendations based on application for material selection, tooth form, gear diametral pitches and pressure angles and modified pitch diameters, as well as tooth thinning and enlargement services…
Inspection
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Our primary objective is ensuring that all the parts we produce conform to our customer’s requirements. We hold our parts and manufacturing to the highest standards and through our excellent inspection staff and equipment we are able to ensure that your parts are to specification…
Inspection
0·0 reviews
Our primary objective is ensuring that all the parts we produce conform to our customer’s requirements. We hold our parts and manufacturing to the highest standards and through our excellent inspection staff and equipment we are able to ensure that your parts are to specification…
CNC Machining
0·0 reviews
CNC Machining is a process used in the manufacturing sector that involves the use of computers to control machine tools. Tools that can be controlled in this manner include lathes, mills, routers and grinders. There are many advantages to using CNC Machining…
Customers
ALUSA
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Certifications
AS9100
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Aerospace Standard 9100
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Key export market
🇨🇱 Chile🇨🇱 Chile
🇲🇽 Mexico🇲🇽 Mexico
🇷🇺 Russia🇷🇺 Russia
🇪🇨 Ecuador🇪🇨 Ecuador
🇺🇸 United States🇺🇸 United States
🇲🇾 Malaysia🇲🇾 Malaysia
🇩🇴 Dominican Republic🇩🇴 Dominican Republic
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