Formsprag Clutch

What Formsprag Clutch does

Formsprag Clutch is a Warren, Michigan-based designer and manufacturer of overrunning clutches, backstops, bi-directional clutches and clutch couplings, founded in 1946 as a spinoff of the Gear Grinding Machine Company. The company specializes in sprag and ramp & roller type clutch technologies protected by six patent families including the Free-Action retainer, PCE sprag profile, Centrifugal Throw-Out sprag profile, Formchrome surface treatment, Reverse-Locking and Form-Lock bi-directional backstop designs. Its 800+ SKU catalog spans general-purpose, special-purpose, backstopping, modular building block, clutch coupling and electromagnetic clutch/brake products supporting torque capacities up to 500,000 lb.ft.

The business sells primarily to industrial OEMs and end users across aerospace & defense (including VTOL/eVTOL propulsion systems, helicopters and satellites), mining & aggregate, material handling, power generation (including nuclear), oil & gas, food & beverage, wastewater, and amusement ride applications. Manufacturing is consolidated at the Warren, Michigan plant, which is also the sole authorized rebuild facility, operating an emergency 24-hour breakdown program for air-freighted units. Go-to-market combines direct field sales with technical sales engineers, an inside sales channel at 1-800-927-3262, the OrderNet B2B e-commerce portal, and authorized literature distribution; pricing is quote-based rather than list-published.

Formsprag operates as a wholly-owned subsidiary of Regal Rexnord (the diversified industrial motion and power transmission conglomerate, formerly Altra Industrial Motion), with sister company Stieber Clutch in Germany providing complementary ramp & roller coverage. The Warren facility holds AS9100D and ISO 9001:2015 certifications (SGS-issued, ANAB-accredited). Sources report no disclosed revenue figures, headcount in the 51-100 range, and an installed-base driven mix of new unit sales, rebuild/overhaul services priced at approximately 30% of new list price, and aftermarket accessories such as axial restraint keys, OSHA covers, torque arms and oil reservoirs.

Name

Formsprag Clutch

Legal name

Formsprag Clutch

Website

https://formsprag.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

1–10 employees

Short description

Formsprag Clutch, founded 1946 in Warren, Michigan, designs and manufactures overrunning clutches, backstops, bi-directional clutches and clutch couplings, serving aerospace, mining, material handling, power generation, oil & gas and other industrial OEMs globally as a Regal Rexnord subsidiary.

Ownership category

akta.pro rank

Product category

Industrial Power Transmission Clutches

NAICS

Forging and Stamping (3321)

SIC

Metal Forgings & Stampings (3460)

akta.pro primary industry

Clutch, Torque Converter & Flywheel Manufacturing (IMACAHAI)

akta.pro secondary industry

Brakes, Clutches & Couplings (Electromagnetic Brakes, Torque Limiters) (IMAGACAK)

Keywords

• Overrunning clutches
• Sprag clutch design
• Industrial backstops
• Power transmission components
• Bi-directional clutches

Headquarters

HQ city

Warren

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Original Equipment Clutch Sales: Design and manufacture of overrunning clutches, backstops, bi-directional clutches and clutch couplings sold as original equipment components to industrial OEMs and end users across mining, aerospace, material handling, food processing, and other markets.
2. Clutch Rebuild & Overhaul Services: Refurbishment services for worn, damaged or failed clutches, restoring them to original specifications with new warranty. Services performed at the Warren, Michigan plant with 30% savings compared to new unit cost. Includes emergency breakdown program with 24-hour rebuild capability.
3. Aftermarket Accessories: Sale of accessories including axial restraint keys, set collars, OSHA covers, torque arms, stub shaft adapters, and oil reservoirs for existing clutch installations.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Formsprag Clutch designs and manufactures long-life overrunning clutches, backstops, bi-directional clutches, and clutch couplings for industrial power transmission applications. The company produces the world's broadest range of both sprag and ramp & roller type overrunning clutches and backstops, serving aerospace, mining, material handling, power generation, and other industrial OEMs from its Warren, Michigan facility, and also offers factory rebuild and overhaul services plus product training.

Product overview

Formsprag Clutch is a manufacturer of overrunning clutch technologies, providing the world's broadest range of both sprag and ramp & roller type overrunning clutches and backstops. The product portfolio centers on General Purpose Clutch Products (including FRB, FSA, FSO, HPI, ASK, CSK, and GFK series), Special Purpose Clutch Products (CDU, FS 100/200/300, FSD/HBG, HPO, RL, FL, SB, SBI series), Backstopping Clutch Products (FHB, HFB/VFB, HSB, LCB, LLH, RSBW), Modular Building Block Clutches (AL/ALM, GFR/GFRN, RIZ/RINZ), Clutch Couplings (AL..KMSD2, AL..KEED2, FW, FWW, RIZ..ELG2), and Electromagnetic Clutches & Brakes (electrically released, fractional HP, permanent magnet, pressure operated, tooth). The company also offers specialized VTOL/eVTOL solutions for aerospace applications, along with rebuild/overhaul services and product training. Accessories include axial restraint keys, set collars, OSHA covers, torque arms, and oil reservoirs.

Differentiator

Problem solved

Functional benefit

Products and services

• General Purpose Clutch Products

Quantifiable outcome

• Over 220 Premier Products ship same day
• +4 more outcomes

Named customers5 records

Segments9 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Three partnerships are on record, tiered core.

• Stieber ClutchcoreStrategic or Co-development PartnerStieber Clutch in Germany is Formsprag's sister company within the Regal Rexnord portfolio. Together, Formsprag and Stieber offer the broadest range of both sprag and ramp & roller type overrunning clutches and backstops available worldwide. The partnership enables global market coverage and complementary product portfolios.
• Regal RexnordcoreOthersFormsprag Clutch is a brand within the Regal Rexnord (formerly Altra Industrial Motion) portfolio of power transmission companies. The partnership provides access to complementary product brands, engineering expertise, and global delivery network for aerospace and industrial applications.
• Regal Rexnord Aerospace SolutionscoreStrategic or Co-development PartnerWorking with Formsprag provides access to a vast network of complementary products and engineering design expertise from the full Regal Rexnord Aerospace Solutions portfolio. This allows single-source solutions and global delivery network to address full scope of aerospace project needs.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Stieber Clutch: Stieber is Formsprag's sister company under Regal Rexnord, also manufacturing sprag and ramp & roller overrunning clutches and backstops. They share product technology and target identical industrial and aerospace applications, making them the closest direct peer.
• Warner Electric: Warner Electric is also a Regal Rexnord brand producing electromagnetic clutches and brakes, overlapping directly with Formsprag's aerospace electromagnetic clutch and brake line. Same parent portfolio and overlapping customer base make this a direct line-of-product peer.
• Marland Clutch: Marland Clutch, also historically under the Altra/Regal Rexnord umbrella, designs and manufactures backstopping and overrunning clutches for industrial applications. Directly comparable on product technology and served markets.
• Hilliard Corporation: Hilliard is a long-standing US manufacturer of overrunning clutches, brakes, and motion control products serving industrial and aerospace markets. Comparable niche specialization, customer base, and core sprag/overrunning technology.
• Ringfeder Power Transmission: Ringfeder manufactures mechanical power transmission components including overrunning clutches, backstops, and torque limiters. Closely comparable product portfolio and industrial OEM customer base.
• Wichita Clutch (Genuine Parts Company / BDI): Wichita Clutch manufactures industrial clutches and brakes including overrunning clutches and pneumatic clutches for heavy industrial applications. Direct competitor in the industrial clutch space.
• Renold Clutches & Couplings: Renold manufactures industrial clutches, backstops, and couplings for material handling, mining, and general industrial markets. Comparable product range and target applications.

Broad incumbents

• Eaton Industrial Clutches and Brakes: Eaton is a large diversified industrial conglomerate whose Industrial Clutches and Brakes division serves many of the same mining, material handling, and power generation markets as Formsprag. Comparable products but as part of a much broader portfolio.
• Regal Rexnord Aerospace Solutions: Regal Rexnord's Aerospace Solutions segment is the parent division housing Formsprag, Warner Electric, and other aerospace brands. Same corporate parent and overlapping customer base in aerospace and defense markets.
• Boston Gear: Boston Gear, part of Regal Rexnord, manufactures power transmission components including clutches, bearings, and gear drives. Comparable industrial customer base and broader product portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCkfqZHN1Amu1AxB7eOnzYlw
• Facebookfacebook.com/Formspragclutchllc
• LinkedInlinkedin.com/company/formsprag-clutch-inc.

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Formsprag Clutch