Nuttall Gear & Delroyd Worm Gear

What Nuttall Gear & Delroyd Worm Gear does

Nuttall Gear & Delroyd Worm Gear designs and manufactures custom heavy-duty industrial gear drives and speed reducers, including parallel shaft speed reducers (up to 6,000,000 lb.in. torque and 1500:1 ratios), SU/SD high speed gear drives (up to 35,000 HP and 25,000 RPM), Type R Moduline concentric speed reducers, and loose gearing sets (helical and spur gears up to 100 inches in diameter, AGMA Quality 10-12). Since 1997 the line has included Delroyd Worm Gear reducers. The company is the sole authorized rebuild and replacement-parts source for legacy Westinghouse gear drives, retaining the original engineering drawings and specifications. Operations are run from a single Niagara Falls, NY facility with in-house heat treatment, dynamic balancing, and testing infrastructure including twin dynamometers and 15,000 lb. test stands capable of incline testing to 75 degrees.

The business serves a narrow set of mission-critical industrial end-markets — aerospace and defense, bridge and dam, metal processing, metal producer, mining and aggregate, oil and gas, power generation (including nuclear), and mass transit/rail. Named customers include the U.S. Army Corps of Engineers (Folsom Dam spillway), the Pentagon, SFMTA (San Francisco cable car propulsion), and the New York MTA / LIRR / Metro-North (M7 rail car gearboxes), plus unnamed major traction-drive OEMs supplied for over 25 years. Nuttall's SU drives are present in approximately 50% of Westinghouse-built nuclear power plants. Go-to-market is direct enterprise field sales supported by technical application engineering, with quote-based pricing on custom engineered solutions and multi-year service contracts; no e-commerce or channel distribution is used.

Founded in 1887 by R.D. Nuttall in Pittsburgh, PA, the company was acquired by Westinghouse in 1928 (becoming Westinghouse Gearing Division), bought out by former Westinghouse employees in 1983, acquired by Colfax in 1997, joined Altra Industrial Motion in 2004, and has operated as a brand within Regal Rexnord since 2023. It is ISO 9001:2008 certified and a founding member of AGMA (1916). The general manager is Joshua Whitney.

Name

Nuttall Gear & Delroyd Worm Gear

Legal name

Nuttall Gear

Website

https://nuttallgear.com

Company type

Private

Founded year

1887

Operating status

Operating

Short description

Nuttall Gear & Delroyd Worm Gear manufactures custom heavy-duty industrial gear drives, speed reducers, and loose gearing for aerospace, transportation, nuclear power, mining, oil and gas, and infrastructure customers, operating as a Regal Rexnord brand from Niagara Falls, NY.

Ownership category

akta.pro rank

Product category

Industrial Gear Drives and Speed Reducers

NAICS

Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612)

SIC

General Industrial Machinery & Equipment (3560), Special Industry Machinery, Nec (3559)

akta.pro primary industry

Gearmotors, Gearboxes & Speed Reducers (IMAGACAF)

Keywords

• Heavy industrial gearboxes
• Speed reducer manufacturing
• Custom engineered gear drives
• Worm gear reducers
• Power transmission equipment

Headquarters

HQ city

Niagara Falls

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Gear Drive Manufacturing: Design and manufacture of custom heavy-duty gear drives, speed reducers, and speed increasers for industrial applications. Products include parallel shaft reducers, concentric reducers, high-speed gear drives, and custom engineered solutions.
2. Replacement Parts: Supply of replacement parts for Nuttall Gear and Westinghouse geared drives. Detailed records allow procurement of any part originally supplied with units based on nameplate information.
3. Repair and Rebuild Services: Comprehensive repair and rebuild services for all manufacturers' helical and worm gear drives including inspection, remanufacturing, redesign and rerate, and system analysis.
4. Field Services: On-site field services including maintenance, contract maintenance, inspections, non-destructive testing, laser alignment, failure analysis, upgrades, torque measurements, training seminars, repairs, and vibration analysis.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Nuttall Gear designs, manufactures, and services heavy-duty industrial gear drives and speed reducers, including custom parallel shaft reducers, high-speed gear drives, concentric shaft reducers, and loose gearing. Through Delroyd Worm Gear, it also offers worm gear reducers and combination worm-helical reducers. The company provides complete custom packaged drive assemblies, on-site field services, rebuild services, replacement parts, and in-house dynamometer testing for industrial applications across aerospace, transportation, mining, power generation, and metal processing markets.

Product overview

Nuttall Gear is a manufacturer of industrial gear drives and gearing solutions, operating as part of Regal Rexnord. The product portfolio centers on two main categories: Speed Reducers (including Custom Parallel Shaft, SU/SD High Speed, TDS Parallel Shaft, and Type R Moduline Concentric models) and Loose Gearing & Gear Sets. The company also offers comprehensive aftermarket services through Field Services, Rebuild Services, Replacement Parts, and Testing Capabilities. Since 1997, the company has included Delroyd Worm Gear, expanding the offering to include worm gear reducers and combination worm-helical reducers. Nuttall is also the authorized repair center for Westinghouse gear drives, maintaining all original drawings and specifications. The company provides complete custom packaged drive assemblies combining mechanical and electrical components for specific customer requirements.

Differentiator

Problem solved

Functional benefit

Brands

• Westinghouse Reducers: Nuttall Gear is the only authorized company that can rebuild, duplicate, and manufacture replacement parts to original Westinghouse standards.

Products and services

• Custom Parallel Shaft Speed Reducers Custom engineered gear drives for parallel, right angle, or vertical input shaft arrangements with torque ratings up to 6,000,000 inch-pounds and gear ratios up to 1500:1, designed for heavy-duty industrial applications.
• SU/SD High Speed Gear Drives High speed gear drives designed for compressors, fans, pumps, and turbine applications with speeds up to 25,000 RPM and ratings up to 35,000 HP, featuring dynamically balanced double helical gearing and forced oil lubrication.
• TDS Parallel Shaft Speed Reducers High torque parallel shaft speed reducers with standard gear ratios up to 1500:1, featuring through-hardened single helical gears and tapered roller bearings for industrial applications.
• Type R Moduline Concentric Speed Reducers Concentric in-line speed reducers with ratios up to 985.3:1, 11 sizes with ratings up to 250,000 lb.in., featuring precision helical gearing in single through quadruple reductions with rugged cast iron housings.
• Gear Sets and Loose Gearing Helical and spur gears up to 100 inches diameter and pinions up to 96 inches long, manufactured to AGMA Quality 10-13 ratings for through-hardened or case-hardened applications.
• Delroyd Worm Gear Products Worm gear reducers, combination worm-helical reducers, and worm and worm gear open gearing products offering acquired and integrated into the Nuttall Gear portfolio in 1997.
• Field Services Comprehensive on-site support including maintenance, contract maintenance, inspections, non-destructive testing, laser alignment, failure analysis, upgrades, torque measurements, training seminars, repairs, and vibration analysis for industrial gear drives.
• Rebuild Services Comprehensive repair and rebuild services for all manufacturers' helical and worm gear drives, including inspection, remanufacturing, redesign, rerate, and system analysis.
• Replacement Parts Factory replacement parts for Nuttall Gear and Westinghouse geared drives, supplied from detailed original records based on nameplate information to ensure fit and performance.
• Westinghouse Reducers Authorized rebuild, duplication, and manufacture of replacement parts to original Westinghouse standards for legacy Westinghouse gear reducers and speed increasers, leveraging maintained original drawings and specifications.
• Testing Capabilities In-house gearbox testing services with loads up to 500 HP and 6 million lb-in torque, differential gearbox testing, incline testing up to 75 degrees, and comprehensive test reports for customers.

Quantifiable outcome

• Torque ratings up to 6,000,000 lb.in.
• +4 more outcomes

Named customers7 records

Segments12 records

Ideal customer profiles8 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Seven partnerships are on record, tiered core, flagship and minor.

• Regal RexnordcoreStrategic or Co-development Partner · 1 January 2023Altra Industrial Motion was acquired by Regal Rexnord in 2023, creating a combined power transmission organization. Nuttall Gear and Delroyd Worm Gear operate as brands under Regal Rexnord alongside Ameridrives, Bauer Gear Motor, Twiflex, Stromag, and Bibby Turboflex.
• Ameridrives CouplingscoreStrategic or Co-development Partner · 1 January 2014Ameridrives Couplings, also part of Altra Industrial Motion, provides Amerigear gear couplings for bulkhead gate drivetrains. Nuttall and Delroyd worked together on Folsom Dam spillway project delivering custom reducers while Ameridrives provided gear couplings.
• U.S. Army Corps of EngineersflagshipOthers · 1 January 2008Joint Federal Project (JFP) managed by U.S. Army Corps of Engineers for Folsom Dam auxiliary spillway construction. Nuttall and Delroyd developed custom primary and secondary reducers for the spillway gate systems.
• Altra Industrial Motion Inc.coreStrategic or Co-development Partner · 1 January 2004Nuttall Gear became part of Altra Industrial Motion Inc. in 2004, joining an organization of leading power transmission component manufacturers including Warner Electric, Boston Gear, Formsprag Clutch, Stieber Clutch, Ameridrives Couplings, and Wichita Clutch.
• Delroyd Worm GearcoreStrategic or Co-development Partner · 1 January 1997Delroyd Worm Gear was acquired by Nuttall Gear in 1997, expanding product offerings to include a wide variety of worm gear reducers, combination of worm-helical reducers, and worm and worm gear open gearing. Now operated as a combined entity under Nuttall Gear.
• Linita Design and ManufacturingminorStrategic or Co-development PartnerFirm responsible for design and assembly of Folsom Dam spillway gate systems. Worked closely with Nuttall and Delroyd engineering teams to develop heavy-duty custom reducers for bulkhead gate drivetrains.
• Westinghouse Electric CorporationcoreStrategic or Co-development PartnerWestinghouse purchased Nuttall Gear in 1928; became Westinghouse Gearing Division. Developed modern form of gearmotor still used today. Many standard product lines emerged including Moduline concentric shaft reducers, gearmotors, TDS reducers, and SU/SD high speed units. Nuttall remains the only authorized repair center for Westinghouse gear drives.

Scale indicators10 records

Recent moves10 records

Expansion highlights5 records

Broad incumbents

• Sumitomo Drive Technologies: Sumitomo Drive Technologies offers a broad portfolio of gear reducers, gearmotors, and power transmission products serving industrial customers globally — overlapping with Nuttall in metallurgy, material handling, and power generation applications.
• Siemens Flender: Flender (Siemens) is a global leader in mechanical drives including helical, planetary, and worm gear units for metals, mining, cement, and power — a major broad-line incumbent competing with Nuttall in custom heavy-duty applications.
• SEW-Eurodrive: SEW-Eurodrive manufactures modular gear units, gearmotors, and drive electronics for a wide range of industries — overlapping with Nuttall in material handling, metals, and wastewater applications.
• Bonfiglioli: Bonfiglioli designs and manufactures gearmotors, drive systems, and inverters for industrial automation, mobile machinery, and wind energy — competing with Nuttall in industrial heavy-duty gear reduction applications.

Direct peers

• David Brown (Clyde Blowers Capital): David Brown manufactures custom-engineered gear units for mining, steel, and power industries — a close comparable to Nuttall's heavy-duty custom helical drive offerings and replacement service model.
• Philadelphia Gear: Philadelphia Gear (a brand of Timken Power Systems) manufactures custom-engineered gear drives and speed reducers for naval, mining, power generation, and heavy industrial markets — directly overlapping Nuttall's core product portfolio and customer base.
• Falk Gear Drives (Regal Rexnord): Falk is Regal Rexnord's other major gear drive brand, producing custom and standard speed reducers for metals, mining, and power generation — making it the closest in-house competitor to Nuttall within the same parent company.
• Bauer Gear Motor (Regal Rexnord sister brand): Bauer Gear Motor, also a Regal Rexnord brand, produces helical and worm gear motors for industrial applications — a sister-brand peer with overlapping power transmission portfolio within the same parent.
• Hansen Industrial Transmissions (Sumitomo): Hansen (now under Sumitomo Drive Technologies) produces industrial gear reducers for conveyors, mills, and cranes in mining and heavy industry — competing with Nuttall's mining and aggregate drive solutions.
• Dodge (ABB): Dodge Industrial (owned by ABB) produces mounted bearings, gear reducers, and power transmission components for heavy industrial applications, directly competing with Nuttall's parallel shaft and concentric reducers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance1 record

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 Nuttall Gear & Delroyd Worm Gear