Top 10 Custom Ball Bearing Factories in the USA 2026
Aug 05, 2026
BOM
Finding reliable custom ball bearing factories in the USA has become increasingly critical as manufacturers across aerospace, medical, robotics, and industrial sectors push for tighter tolerances, specialized materials, and faster domestic supply chains. With growing pressure to reduce dependence on overseas suppliers and meet stringent compliance requirements, U.S.-based custom bearing manufacturers are more in demand than ever.
This guide cuts through the noise and answers the questions procurement teams and engineers ask most: which factories actually manufacture custom bearings in the USA, what industries do they specialize in, and how do you choose the right one for your application? Based on publicly verified company data and industry credentials, here is what you need to know:
- OEM engineers and product designers looking for a domestic manufacturer that can prototype and produce custom ball bearings to exact specifications
- Procurement managers in aerospace, defense, and medical sectors who need certified, ITAR-compliant, or AS9100-qualified suppliers
- Startups and SMEs seeking custom bearing solutions with no minimum order quantity and responsive engineering support
- Maintenance and MRO teams needing custom replacements for obsolete or discontinued bearing units
The 10 companies featured in this article represent a cross-section of the U.S. custom ball bearing manufacturing landscape — from precision aerospace specialists to industrial-grade custom bearing factories — each evaluated on capabilities, certifications, and industry fit. Choosing the right manufacturing partner can directly impact your product's performance, lead time, and compliance posture, so read on to find the best match for your specific requirements.
List of the Top 10 Custom Ball Bearing Factories in the USA 2026
| Brand | Headquarters | Best for |
|---|---|---|
| 1. Schatz Bearing Corporation | Poughkeepsie, NY, USA | Aerospace, medical & robotics teams needing custom bearings with no MOQ |
| 2. American Roller Bearing Company | Morganton, NC, USA | Heavy industrial OEMs needing custom bearings for extreme environments |
| 3. Hartford Technologies | Rocky Hill, CT, USA | OEMs needing a one-stop custom bearing & precision components supplier |
| 4. NMB Technologies Corporation | Troy, MI, USA | Engineers needing ultra-small or corrosion-resistant miniature custom bearings |
| 5. Kaydon Bearings | Muskegon, MI, USA | Teams needing custom thin section or large-diameter slewing ring bearings |
| 6. New Hampshire Ball Bearings (NHBB) | Peterborough, NH, USA | Aerospace & defense engineers needing mission-critical custom bearings |
| 7. Carter Bearings | Grand Haven, MI, USA | Food processing & automation buyers needing fast-turnaround custom bearings |
| 8. NES Bearing Co. | Olean, NY, USA | Aerospace OEMs needing custom bearings with FAA-PMA & full inspection support |
| 9. Moline Bearing Company | Batavia, IL, USA | Industrial OEMs needing custom mounted bearings with same-day USA shipping |
| 10. RBC Bearings Incorporated | Oxford, CT, USA | Aerospace primes & defense contractors needing institutional-grade custom bearings |
1. Schatz Bearing Corporation
Schatz Bearing Corporation is a USA-based custom ball bearing manufacturer that designs and produces bearings entirely in-house — from prototype to full production. Their engineering team works with you to spec materials, tolerances, seals, and geometry, whether you are modifying a standard design or building from scratch. Known for custom thin section bearings and custom aerospace bearings, they serve demanding industries with no minimum order quantities and short prototype lead times.
| Headquarters | Poughkeepsie, NY (Manufacturing facility on-site) |
| Business type | Custom Ball Bearing Manufacturer (Made in USA) |
Custom bearing capabilities
- Custom ball bearings from standard or new designs
- Custom thin section bearings (radial, angular contact & 4-point contact)
- Custom aerospace bearings (airframe control, space, eVTOL)
- Angular contact bearings & duplex sets
- Additive manufactured bearing components
- Material options: 52100, 440C, BG42, M50, high-nitrogen stainless steel
Industries served
Aerospace & Defense Medical Equipment Semiconductor Automation & Robotics Military
Certifications
AS9100 Rev D ISO 9001:2015 NADCAP ITAR Registered DFARS Compliant
Best for: Engineers and procurement teams in aerospace, medical, or robotics looking for a U.S.-based custom bearings manufacturer with no MOQ and strong engineering support
2. American Roller Bearing Company
American Roller Bearing Company is a USA-based custom bearings manufacturer with over 100 years of experience designing and producing specialty bearings for heavy-duty industrial applications. If you need custom made bearings that go beyond standard catalog options — whether that means a split bearing for easier maintenance, a combined radial and thrust design to save space, or a bearing engineered for extreme temperatures up to 1,200°F — this factory has the application engineering depth to deliver. Their team takes on both custom ball bearings and custom roller bearings from concept through production, making them a strong option for OEMs in mining, oil & gas, power generation, and primary metals who require application-specific solutions rather than off-the-shelf products.
| Established | Over 100 years in operation |
| Headquarters | Morganton, NC |
| Business type | Custom Bearing Manufacturer (Made in USA) |
Custom bearing capabilities
- Split bearings (radial & thrust) for easy equipment service
- Combined radial/thrust bearings for space-constrained applications
- Very high-temperature bearings (up to 1,200°F)
- Extra-large custom bearings (non-standard dimensions)
- Spherical plain bearings, crossed roller bearings & track wheels
- Custom ball bushings & ladder bearings for linear/thermal applications
Industries served
Mining Oil & Gas Power Generation Primary Metals Forging & Stamping
Certifications
ISO 9001:2015
Best for: Industrial OEMs and maintenance engineers needing heavy-duty custom bearings with application engineering support, particularly for extreme environments or non-standard dimensions
3. Hartford Technologies
Hartford Technologies is a North American precision custom bearing manufacturer and components supplier with nearly a century of experience. Based in Rocky Hill, CT, they specialize in custom bearing assemblies, precision balls, bearing components, and CNC-machined parts for OEMs, Tier 1, and Tier 2 suppliers. Their in-house CNC Swiss machining capability allows them to produce intricate custom ball bearings and bearing components with tight tolerances across a wide range of materials. For buyers looking for a custom bearings manufacturer that can also handle the surrounding components — cages, races, sleeves, rollers, and pins — all under one roof, Hartford Technologies offers a genuinely integrated supply chain solution. They are a women-owned business certified in Connecticut.
| Established | Nearly 100 years in operation |
| Headquarters | Rocky Hill, CT |
| Business type | Custom Bearing Manufacturer & Precision Components Supplier |
Custom bearing capabilities
- Custom bearing assemblies (cage, needle, thrust, plastic bearings)
- Precision balls (chrome steel, stainless, ceramic, tungsten carbide, glass)
- Custom bearing components (races, cages, sleeves, retainers)
- CNC Swiss-machined precision pins, rollers & shafts
- Ball & roller retainer assemblies
- Special bearings for medical, military & electronics applications
Industries served
Automotive Medical Military Electronics Industrial Agriculture
Certifications
Women-Owned Business Certified
Best for: OEMs and Tier 1/Tier 2 suppliers seeking a one-stop custom bearing and precision components manufacturer with CNC Swiss machining capabilities and strong application engineering support
4. NMB Technologies Corporation
NMB Technologies is the North American arm of MinebeaMitsumi, a global precision manufacturer best known for miniature and instrument-grade custom ball bearings. If your application demands very small, high-precision custom bearings — think medical devices, dental instruments, semiconductor equipment, or precision electronics — NMB's engineering team can develop a tailored solution covering materials, retainer type, enclosure, and lubrication. They hold the Guinness World Record for the world's smallest commercially available ball bearing (1.4978mm OD), which reflects their core strength in micro-precision manufacturing. Their proprietary Giga Protection® material offers corrosion resistance 20 times greater than standard stainless steel, making it a strong option for marine, medical, and harsh-environment applications where standard custom bearings fall short.
| Headquarters | Troy, MI (Part of MinebeaMitsumi Group) |
| Business type | Precision Miniature Custom Ball Bearing Manufacturer |
Custom bearing capabilities
- Miniature & instrument-grade custom ball bearings (inch & metric)
- Hybrid ceramic bearings (stainless steel rings + ceramic balls)
- Giga Protection® anti-corrosion bearings (20x rust resistance)
- Custom enclosure options: metal shield, rubber seal, Teflon seal
- Custom lubrication: fluorinated, conductive, urea grease & oil
- Dental bearings & automotive turbo bearings
Industries served
Medical & Dental Semiconductor Automotive Electronics Marine
Certifications
ISO Certified
Best for: Engineers and product designers needing ultra-small or corrosion-resistant custom ball bearings with precise material and lubrication specifications, especially for medical, dental, or semiconductor applications
5. Kaydon Bearings (an SKF Group Company)
Founded in 1941 specifically as a designer of customer-specific bearings, Kaydon Bearings has built its entire identity around custom bearing solutions. Now part of the SKF Group and headquartered in Muskegon, Michigan, Kaydon is one of the most well-known names in custom thin section bearings and slewing ring bearings in the USA. Their Reali-Slim® and Ultra-Slim® thin section bearing lines are widely used in robotics, semiconductor equipment, medical imaging, and aerospace applications where minimizing weight and envelope size is critical. For buyers who need custom bearings spanning from 0.75" to 240" in diameter, in materials ranging from standard 52100 steel to titanium or Pyrowear® 675, Kaydon offers engineering-led customization across an unusually broad size and material range.
| Established | 1941 |
| Headquarters | Muskegon, MI |
| Business type | Custom Bearing Manufacturer (SKF Group Company) |
Custom bearing capabilities
- Custom thin section bearings (Reali-Slim® & Ultra-Slim®, 0.75"–240" OD)
- Custom slewing ring bearings (four-point, eight-point, cross roller, three-row)
- Exotic material options: titanium, Pyrowear® 675, 440C stainless, AISI 52100
- Custom coatings: Endurakote®, zinc, nickel & corrosion-resistant options
- Integrated bearing assemblies (threaded races, flanged bolt-on housings)
- Angular contact, double row & four-point contact configurations
Industries served
Aerospace & Defense Medical Systems Robotics Semiconductor Renewable Energy Oil & Gas
Best for: Engineers and procurement teams needing custom thin section bearings or large-diameter slewing ring bearings with exotic material options, across a wide range of industries from robotics to renewable energy
6. New Hampshire Ball Bearings (NHBB)
New Hampshire Ball Bearings (NHBB) is one of the most specialized custom aerospace bearings manufacturers in the United States. A subsidiary of MinebeaMitsumi and a core part of the MinebeaMitsumi Aerospace brand, NHBB has over 75 years of bearing engineering experience focused almost entirely on precision and mission-critical applications. They are the go-to source for engineers who need custom ball bearings qualified to tight aerospace and defense specifications — including miniature and instrument-grade bearings, thin section ball bearings, airframe control bearings, and complex bearing assemblies. NHBB's New Product Development Center (NPDC) is specifically set up for extreme-performance applications where standard custom bearings are not enough, offering prototype development, advanced materials processing, and precision mechanical subassembly capabilities.
| Established | Over 75 years in operation |
| Headquarters | Peterborough, NH |
| Business type | Precision Custom Bearing Manufacturer — Aerospace, Defense & Medical |
Custom bearing capabilities
- Custom miniature & instrument ball bearings
- Custom thin section ball bearings
- Airframe control ball bearings & complex bearing assemblies
- Rod end & spherical bearings with self-lubricating liner options
- Precision mechanical subassemblies
- New product development for extreme-performance applications (NPDC)
Industries served
Aerospace & Defense Medical Devices High Technology
Certifications
AS9100 ISO 9001 NADCAP
Best for: Aerospace and defense engineers requiring custom bearings qualified to strict military and commercial aviation specifications, including Tier 1 and Tier 2 airframe manufacturers and advanced medical device OEMs
7. Carter Bearings
Carter Bearings is a precision custom bearings manufacturer based in Grand Haven, Michigan, with over 50 years of experience making bearings entirely in the USA. Unlike large catalog-driven suppliers, Carter keeps engineering, production, quality control, and customer service under one roof — which translates to faster lead times and more responsive support when you need custom made bearings for a specific application. They are particularly well known for bearings designed for demanding environments: their Xtenda™ stainless steel line is built for food-grade and washdown applications, their Neverlube™ series eliminates lubrication maintenance, and their polyurethane-coated bearings offer quiet, non-marking operation for packaging and conveying systems. For buyers searching for custom bearings near me in the Midwest or across the USA, Carter is a strong domestic option with a proven track record in food processing, industrial automation, and medical equipment.
| Established | Over 50 years in operation |
| Headquarters | Grand Haven, MI |
| Business type | Custom Bearing Manufacturer (Made in USA) |
Custom bearing capabilities
- Custom cam followers & yoke rollers (standard & heavy-duty)
- Xtenda™ stainless steel bearings for food-grade & washdown environments
- Neverlube™ self-lubricating bearings
- Polyurethane-coated bearings for quiet, non-marking operation
- Chrome-plated bearings for extended corrosion protection
- Custom solutions for obsolete or discontinued bearing replacements
Industries served
Food & Beverage Industrial Packaging Robotics & Automation Medical Equipment Heavy Machinery
Certifications
ISO 9001:2015
Best for: Buyers in food processing, packaging, and industrial automation looking for a responsive USA-based custom bearing manufacturer with proprietary specialty lines and fast lead times
8. NES Bearing Co. (Napoleon Engineering Services)
Napoleon Engineering Services (NES Bearings) is a privately-owned custom bearing manufacturer based in Olean, New York, founded in 1997. If your application demands custom aerospace bearings, precision reverse-engineered replacements, or bearings that need to pass FAA-PMA or First Article Inspection (FAI per AS9102), NES is one of the few U.S.-based factories capable of handling the full project — from initial design and development through manufacturing, testing, and inspection, all under one roof. What sets NES apart from larger manufacturers is the combination of small-shop responsiveness with large-facility manufacturing capability: their team handles complete custom ball and roller bearing manufacturing with lead times as short as 12 to 20 weeks. They also offer bearing modification services, allowing standard products to be adapted to specific application requirements, which reduces both lead time and cost without sacrificing performance.
| Established | 1997 |
| Headquarters | Olean, NY |
| Business type | Custom Bearing Manufacturer, Testing & Inspection (Made in USA) |
Custom bearing capabilities
- Complete custom ball & roller bearing manufacturing (12–20 week lead time)
- Custom aerospace bearings with FAA-PMA & FAI (AS9102) support
- Bearing reverse engineering & obsolete part replacement
- Bearing modification (adapting standard products to custom specs)
- Bearing inspection, testing & test rig manufacturing
- Industries: aerospace, automotive, agriculture, oil & gas, electric motor
Industries served
Aerospace & Aviation Automotive Oil & Gas Agriculture Electric Motor Heavy Equipment
Certifications
ISO 9001:2015 AS9100D NADCAP Chemical Processing
Best for: Aerospace OEMs and engineering teams needing custom high-precision bearings with full traceability, FAA-PMA capability, and combined manufacturing, inspection, and testing services from a single U.S.-based source
9. Moline Bearing Company
Moline Bearing Company is one of the longest-running bearing manufacturers in the United States, with roots going back to 1869 and a formal bearing manufacturing division established in 1992. Based in Batavia, Illinois, they manufacture and assemble all products in the USA — with six warehouses across the country that allow them to ship over 96% of orders same day. For buyers who need custom bearings for mechanical power and industrial applications, Moline's engineering team specializes in designing application-specific solutions: custom housings in ductile iron or machined steel, specialty seals for food-grade or high-temperature environments, custom grease formulations, and replacement bearings for discontinued or obsolete units. Their custom engineering program is designed around the idea that standard OEM specifications aren't always the right fit for demanding field conditions — making them a practical choice for industrial maintenance engineers and OEMs who need a more tailored solution without a long development cycle.
| Established | 1869 (bearing division established 1992) |
| Headquarters | Batavia, IL (6 warehouses nationwide) |
| Business type | Custom Mounted Bearing Manufacturer (Made in USA) |
Custom bearing capabilities
- Custom mounted bearings (Type E tapered, spherical roller, ball)
- Custom housings in ductile iron or machined steel
- Specialty seals & gaskets (food-grade, high/low temperature, solid lube)
- Custom grease options (high-temp, food-grade, hard lubrication)
- Obsolete & discontinued bearing replacement manufacturing
- Custom shaft collars, bushings & support components
Industries served
Mechanical Power Conveying & Screening Food Processing Mining & Aggregate Agriculture Air Handling
Certifications
Made in USA
Best for: Industrial OEMs and maintenance engineers needing custom mounted bearings with fast U.S. shipping, application-specific housing and seal options, or replacement solutions for discontinued bearing units
10. RBC Bearings Incorporated
Founded in 1919 and headquartered in Oxford, Connecticut, RBC Bearings Incorporated is one of the largest and most established custom bearing manufacturers in the United States, and the only publicly traded company on this list (Nasdaq: RBC). Unlike most bearing manufacturers that serve broad commercial markets, RBC focuses primarily on highly technical or regulated bearings and engineered products for specialized markets that require sophisticated design, testing, and manufacturing capabilities — making them a natural fit for buyers in aerospace, defense, space, and heavy industrial sectors who need custom ball bearings backed by institutional-grade engineering and compliance infrastructure. With 31 manufacturing locations across multiple countries and a deep portfolio covering everything from precision ball bearings and thin section bearings to airframe control bearings and self-lubricating spherical bearings, RBC offers a breadth of custom bearing solutions that few USA-based manufacturers can match. Their certifications span ISO 9001, AS9100, NADCAP, and FAA-PMA approvals across multiple facilities.
| Established | 1919 |
| Headquarters | Oxford, CT (31 manufacturing locations worldwide) |
| Business type | Custom Engineered Bearing Manufacturer (Nasdaq: RBC) |
Custom bearing capabilities
- Precision custom ball bearings & thin section bearings
- Airframe control bearings & aerospace spherical bearings
- Self-lubricating & dry film lubricated bearing solutions
- Sleeves, journals & bushings (metal-to-metal and self-lubricating)
- Custom engineered products for space, marine & defense applications
- FAA-PMA approved bearing manufacturing across multiple facilities
Industries served
Aerospace & Defense Space Medical Oil & Gas Heavy Equipment Industrial Machinery
Certifications
ISO 9001 AS9100 NADCAP FAA-PMA
Best for: Large OEMs, aerospace primes, and defense contractors requiring custom engineered bearings with full institutional compliance, multi-facility manufacturing capability, and a proven track record with Boeing, Pratt & Whitney, Lockheed Martin, and U.S. Government programs
What Does a Custom Bearing Manufacturer Do?
A custom bearing manufacturer helps companies create bearings that cannot be purchased from standard catalogs. Instead of choosing an existing model, engineers work with the manufacturer to define the size, material, load capacity, speed, and operating environment.
For example, a robotics company may need a bearing that fits into a compact robotic arm joint. A standard bearing may be too large or create too much friction. A custom solution can adjust the internal structure, lubrication, and materials to achieve smoother movement and longer service life.
A good custom bearing supplier does more than machining parts. They help solve engineering problems from prototype design to mass production.
What Custom Bearing Solutions Are Available?
Different industries require different bearing designs. Experienced manufacturers usually provide a wide range of options based on application needs.
| Bearing Type | Common Applications | Typical Customization |
|---|---|---|
| Custom ball bearings | Robotics, automation, medical equipment | Size, seals, lubrication, precision grade |
| Custom roller bearings | Heavy machinery, industrial equipment | Load capacity, materials, special dimensions |
| Custom needle bearings | Compact mechanical systems | Space-saving designs and high load performance |
| Custom plastic bearings | Food processing, chemical environments | Corrosion resistance and lightweight materials |
| Custom plain bearings | Low-maintenance motion systems | Self-lubrication and special coatings |
These options allow manufacturers to create solutions for both simple replacement parts and complex OEM projects.
Why Do Companies Choose Custom Made Bearings?
Many OEM companies choose custom bearings because standard products cannot always handle unique working conditions.
Imagine an aerospace actuator working thousands of feet above the ground. The bearing inside must handle vibration, temperature changes, and strict safety requirements. A normal catalog bearing may work in a test environment but fail during long-term operation.
Custom made bearings are designed around the application, not the other way around.
Engineers can optimize materials, internal clearance, lubrication, and structure to improve reliability.
How Can You Select the Right Custom Bearing Manufacturer?
Choosing a supplier is not only about price. The right manufacturer should understand your product goals and provide practical engineering support.
| Selection Factor | What Buyers Should Check |
|---|---|
| Engineering capability | Can they review drawings and suggest improvements? |
| Customization range | Can they produce custom size bearings and special designs? |
| Quality control | Do they provide inspection reports and traceability? |
| Production flexibility | Can they support prototypes and small orders? |
A medical equipment company, for example, may need only a small batch of highly precise bearings for a new device. A flexible manufacturer can help develop the first samples before moving into larger production.
Custom Bearing Manufacturer vs Standard Bearing Supplier: What Is the Difference?
Standard bearing suppliers usually provide ready-made products with fixed specifications. A custom bearing manufacturer focuses on solving special application requirements.
| Standard Bearing Supplier | Custom Bearing Manufacturer |
|---|---|
| Offers existing models | Develops application-specific designs |
| Limited modification options | Adjusts size, material, and performance |
| Suitable for common equipment | Suitable for aerospace, robotics, and specialized machinery |
Which Industries Need Custom Bearings?
Custom bearing demand continues to grow in industries where performance and reliability are critical.
Aerospace: Requires lightweight, high-strength, and highly reliable bearing solutions.
Medical equipment: Needs quiet operation and precise movement.
Automation and robotics: Requires compact designs with smooth motion.
Industrial machinery: Often needs replacement bearings for discontinued or modified equipment.
Should You Choose Custom Bearings Near Me or a Global Supplier?
Many buyers search for custom bearings near me because local communication and faster delivery are attractive. However, the best supplier depends on your project requirements.
Local manufacturers may offer easier communication and faster support. Global manufacturers can provide competitive pricing, broader production experience, and flexible supply options.
For OEM buyers, the most important factors are usually engineering ability, quality consistency, and long-term cooperation.
Frequently Asked Questions About Custom Bearings
What is a custom bearing manufacturer?
A custom bearing manufacturer designs and produces bearings based on specific requirements such as size, material, load capacity, and operating conditions instead of only supplying standard models.
Can manufacturers produce custom size bearings?
Yes. Many manufacturers can produce custom size bearings with modified dimensions, materials, seals, lubrication, and internal structures for special applications.
What information is needed to request custom bearings?
Usually manufacturers need bearing drawings, dimensions, load requirements, speed, temperature range, materials, and application details to recommend the right solution.
Are custom bearings available for small quantities or prototypes?
Many custom bearing manufacturers support prototype development and small production runs, especially for new OEM products and specialized equipment.
What industries use custom ball bearings?
Custom ball bearings are commonly used in aerospace, medical equipment, robotics, automation, industrial machinery, and other applications requiring higher performance than standard bearings.
Can custom bearings replace discontinued bearing models?
Yes. Some manufacturers provide reverse engineering services to reproduce obsolete bearings or improve existing designs for older equipment.
Conclusion
The USA is home to some of the world's most capable custom ball bearing manufacturers, spanning everything from mission-critical aerospace specialists to heavy industrial factories with over a century of experience. Whether you need custom thin section bearings, miniature precision bearings, or application-engineered solutions for extreme environments, the 10 factories covered in this guide represent a strong starting point for any procurement or engineering team sourcing domestically. Each has been selected based on verified capabilities, certifications, and industry focus — so you can compare options with confidence rather than guesswork.
That said, U.S.-based manufacturing isn't the only route to high-quality custom bearings. If your project calls for competitive pricing, flexible order quantities, or global supply chain options, it's worth exploring trusted international suppliers as well. Bom Bearing is a China-based custom bearing manufacturer offering a wide range of precision custom ball bearings, with engineering support and customization capabilities that serve OEMs and distributors worldwide — including many customers across North America. If you're weighing domestic versus international sourcing, Bom Bearing is a practical option worth adding to your shortlist.
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