What Horsburgh & Scott does

Horsburgh & Scott is a Cleveland, Ohio-based custom manufacturer of heavy-duty industrial gears and gearboxes, founded in 1880 and operating continuously for over 135 years. The company designs and builds large custom gears in herringbone, helical, ring, and pinion configurations, and manufactures custom gearboxes — including parallel shaft, bevel, and planetary units — with capacities up to 50,000 HP and 100,000,000 in-lb-f of torque. It also holds exclusive ownership of the Dominion gearbox brand, including Dominion's herringbone balanced design technology, which eliminates internally caused axial thrust loads and extends bearing life. Operations are carried out across a 237,000 sq. ft. main manufacturing plant, a 35,000 sq. ft. dedicated heat-treat facility (in-house carburizing and induction hardening), and additional manufacturing sites in Slidell LA, Roscoe IL, Lively Ontario, and Houston TX (added via the April 2026 acquisition of Franklin Machine & Gear).

The company's product surface spans custom gears, standard and premium gearboxes (helical, planetary, worm, cooling-tower, fluid couplings), Dominion-engineered reducers, OEM spare parts (with engineering drawings for over 100,000 gearbox parts), and gear couplings. Supporting services include 24/7 emergency rebuild and repair, field service, heat treatment, laser welding, rust-prevention packaging, and long-term climate-controlled storage. Horsburgh & Scott is the exclusive US manufacturer and aftermarket provider for Dominion gearing products, giving it single-source responsibility for legacy Dominion equipment.

Commercially, Horsburgh & Scott operates a quote-based, enterprise B2B model with regional sales representatives and engineering consultation. Pricing is not publicly disclosed; transactions are negotiated per custom specification, often under multi-year service relationships. The company serves 2,000+ global customers across 14 industrial verticals, including aluminum, cement, mining, oil and gas, power generation (including wind turbine main gearboxes), marine, pulp and paper, rail, steel, sugar, and tire and rubber. It is a privately held portfolio company of GenNx360 Capital Partners and operates as a corporation domiciled in Ohio.

Name

Horsburgh & Scott

Legal name

Horsburgh & Scott

Website

https://horsburgh-scott.com

Company type

Private

Founded year

1880

Operating status

Operating

Headcount range

101–250 employees

Short description

Horsburgh & Scott is a Cleveland-based custom manufacturer of heavy-duty industrial gears and gearboxes (up to 50,000 HP), serving 2,000+ customers across mining, oil and gas, power generation, cement, steel, marine, and rail. Quote-based B2B sales with 24/7 field service and full in-house heat treatment.

Ownership category

akta.pro rank

Product category

Industrial Gears and Gearboxes

NAICS

Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612), Turned Product and Screw, Nut, and Bolt Manufacturing (33272)

SIC

Ball & Roller Bearings (3562)

akta.pro primary industry

Gearmotors, Gearboxes & Speed Reducers (IMAGACAF)

Keywords

• Industrial gear manufacturing
• Custom gearbox engineering
• Heavy duty gearboxes
• Power transmission equipment
• Gear repair services

Headquarters

HQ city

Cleveland

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Gear Manufacturing: Custom engineering and manufacturing of industrial gears including herringbone, helical, ring, and pinion configurations for heavy-duty applications
2. Gearbox Manufacturing: US manufacturer of custom gearboxes from small to large industrial drives including standard and premium brand products
3. Spare Parts Program: OEM spare parts including exact drop-in replacements, standard replacement plus with enhanced metallurgy, and upgrade options with improved geometry and hardening
4. Rebuild & Repair Services: Repair or rebuild services for most gearbox brands with improved engineering specs, 24/7 emergency service available
5. Field Service: 24/7 field service with experienced engineers and technicians for on-site support
6. Heat Treatment Services: In-house gear heat treating, carburizing and induction hardening services

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Horsburgh & Scott designs, engineers, and manufactures custom heavy-duty industrial gears and gearboxes (including herringbone, helical, ring, and pinion configurations up to 50,000 HP and 100,000,000 in-lb-f of torque) along with premium standard gear drives and the Dominion gearbox brand. The company supports these products with comprehensive services including 24/7 rebuild and repair, field service, in-house heat treatment, laser welding, and spare parts programs for legacy equipment.

Product overview

Horsburgh & Scott is a manufacturer and service provider offering a comprehensive portfolio of industrial gearing products and support services. The core product portfolio includes Gears (herringbone, helical, ring, pinion), Gearboxes (custom manufacturing from light to heavy-duty), Premium Gearboxes (standard gear drives including helical, planetary, worm, and fluid couplings), Dominion Gearboxes (acquired brand with single/double/triple reduction reducers), OEM Spare Parts (100,000+ parts with tooling), and Gear Couplings. These products are supported by value-added services including Rebuild & Repair (24/7 field service), Heat Treatment (in-house carburizing and induction hardening), Laser Welding, Rust Prevention, and Storage Solutions. The company operates manufacturing facilities totaling 237,000 sq. ft. plus 35,000 sq. ft. of heat treating, and serves industrial markets including aluminum, cement, mining, oil & gas, power generation, pulp & paper, and steel.

Differentiator

Problem solved

Functional benefit

Brands

• Dominion Gearboxes: Exclusive owner of Dominion engineering gearboxes with complete gearbox replacements, parts, repair, rebuild, and field service for all Dominion gearing products.

Products and services

• Gears Custom heavy-duty industrial gears including herringbone, helical, ring, and pinion designs for heavy-duty industrial applications. The company is described as a world leader for design and manufacture of large custom gears.
• Gearboxes Custom gearbox and gear drive manufacturing for light to heavy-duty industrial applications, including parallel shaft, bevel, and planetary configurations up to 50,000 HP. Manufactured in the USA.
• Premium Gearboxes Premium brand standard gear drives featuring heavy-duty gearing, rugged housings, and a wide range of capacities up to 11,500 HP, including Helical Gear Drives (M and H Series), Cooling Tower Gear Drives, Planetary Gear Drives, Gear Motor Drives, Worm Gear Drives, Altra Worm Drives, and Fluid Couplings.
• Dominion Gearboxes Exclusive ownership of Dominion engineering gearboxes including single, double, and triple reduction speed reducers with herringbone balanced design technology. Dominion was previously based in Montreal and was one of the largest providers of gearboxes in Canada.
• OEM Spare Parts Standard and upgraded replacement parts for most gearboxes including gearing elements, gearbox components, lubrication system components, bearings, sub-assemblies, and gaskets. Existing tooling and drawings for over 100,000 gearbox parts.
• Gear Couplings Industrial gear coupling products for power transmission applications.
• Rebuild & Repair Gearbox repair and rebuild services with improved engineering specifications for most gearbox brands, featuring 24/7 field service and spare parts availability.
• Field Service Emergency repair services available 24/7 with highly experienced engineers and technicians on call for on-site gearbox repair, analysis, and turn-around time support.
• Heat Treatment In-house gear heat treating, case carburizing, and induction hardening services in a 35,000 sq. ft. dedicated facility to produce stronger gears.
• Laser Welding Laser welding services for gear repair and manufacturing applications.

Quantifiable outcome

• Over 2,000+ global customers served
• +3 more outcomes

Segments14 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Franklin Machine & Gearstrategic acquisitionStrategic or Co-development Partner · 14 April 2026Franklin Machine & Gear is a family-owned industrial gear and gearbox manufacturing and repair services provider based in Houston, Texas. Acquired by Horsburgh & Scott in April 2026. Co-owners Eddy and Larry Franklin and General Manager Tom Patton remain with the combined business. The acquisition adds precision machining capabilities and expands geographic footprint into the Gulf Coast region.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Flender (Siemens): A leading global manufacturer of mechanical drive systems (gearboxes, couplings, generators) for industrial and wind applications. Directly comparable to Horsburgh & Scott in custom industrial gearbox manufacturing and wind turbine main gearboxes, though at much larger scale and with global reach.
• David Brown: UK-based manufacturer of industrial gearboxes and gear drive solutions serving mining, steel, power, and similar heavy industries. Directly comparable to Horsburgh & Scott in custom-engineered gearboxes for harsh-duty applications.
• Lufkin Industries (GE): U.S. manufacturer of gear drives and power transmission equipment, particularly for oil & gas pumping and industrial applications. Directly comparable to Horsburgh & Scott in heavy-duty industrial gearbox manufacturing and aftermarket service.
• Philadelphia Gear (Regal Rexnord): U.S. manufacturer of custom gears, gearboxes, and gear drive services for heavy industries including steel, mining, and power generation. Direct competitor in custom-engineered gearing and gearbox rebuild/repair services.
• Falk (Regal Rexnord): Heritage brand of industrial gear drives including custom, standard, and high-speed gear reducers. Direct peer in heavy-duty industrial gearboxes for mining, steel, and power applications.

Broad incumbents

• SEW-Eurodrive: Global market leader in drive technology, gearmotors, gearboxes, and drive electronics. Comparable product portfolio in industrial gearboxes, though broader scope (electronics, automation) and much larger global scale than Horsburgh & Scott.
• Bonfiglioli: Italian global manufacturer of gearmotors, drive systems, and inverters for industrial automation, mobile machinery, and wind energy. Comparable in custom gearboxes for industrial and renewable applications, though wider product breadth and global footprint.
• Nord Drivesystems: German manufacturer of drive technology including gear units, motors, and inverters. Overlapping product range with Horsburgh & Scott in industrial gearboxes and gear drives, with broader electronics offering.
• Sumitomo Heavy Industries: Japanese industrial conglomerate producing power transmission and control products including gear reducers and gearmotors. Overlap with Horsburgh & Scott in custom industrial gearboxes, though Sumitomo operates at much larger scale across many industries.
• Regal Rexnord: U.S.-based diversified manufacturer of power transmission and motion control products including gear drives (Falk, Philadelphia Gear), bearings, and motors. Closely comparable through its gearbox brands which directly compete with Horsburgh & Scott in heavy industrial applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/horsburghscott1
• Facebookfacebook.com/horsburgh-scott-512287248836904
• LinkedInlinkedin.com/company/1353390

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Horsburgh & Scott