Standard Locknut

What Standard Locknut does

Standard Locknut is a privately-held U.S. manufacturer of precision-engineered industrial power transmission components, founded in 1949 and headquartered in Westfield, Indiana. The company produces mounted bearings (spherical and tapered roller), pillow blocks, flange cartridges, housings, adapter assemblies, locknuts, lockwashers, withdrawal sleeves, and seals/caps across shaft sizes from 1-3/8 inches to 50 inches. Its product portfolio centers on proprietary lines such as the I-Power Series (Type E tapered roller and S2000 spherical roller bearings), SAF split spherical roller pillowblocks, HMS Heavy Moveable Structures bearings, and the inherited Miether MMW and FCL families. The portfolio is built around in-house CNC machining and customized manufacturing under a Made-in-USA production model.

The company operates a sales-led, direct go-to-market targeting two primary customer segments: industrial distributors and OEM manufacturers. A secondary use-case segment addresses heavy-infrastructure projects involving moveable bridges, stadium roofs, and dam gates via the HMS product line. Revenue derives from catalog and quote-based hardware sales, custom-engineering and OEM development services, customized machining work, and the Core Restore Program, a managed refurbishment service for used bearing assemblies. In June 2026, Standard Locknut expanded its portfolio through the acquisition of Jones Bearing Company, a heavy-industry bearing specialist founded in 1890.

The company's strategic posture emphasizes specialty mounted-bearing categories, U.S.-based manufacturing with shorter lead times, and engineered solutions for OEM and infrastructure customers. It maintains a digital Product Selector Tool (findbearing.stdlocknut.com) to support product discovery, and competes on proprietary product design, brand heritage, in-house machining capability, and maintained on-hand inventory rather than on price or volume in commodity bearings.

Name

Standard Locknut

Legal name

Standard Locknut, LLC

Website

https://standard-miether.com

Company type

Private

Founded year

1949

Operating status

Operating

Headcount range

101–250 employees

Short description

Standard Locknut is a privately-held U.S. manufacturer founded in 1949 in Westfield, Indiana, producing mounted bearings, housings, locknuts, and seals across shaft sizes from 1-3/8" to 50". It serves industrial distributors and OEM manufacturers, with secondary focus on heavy-infrastructure applications and custom-engineered solutions.

Ownership category

akta.pro rank

Headquarters

HQ city

Westfield

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. Industrial Bearing Products: Sale of high-quality mounted bearings, housings, adapter assemblies, locknuts, washers, seals, and related accessories to distributors and OEMs. Products are available in standard and customized configurations with shaft sizes from 1-3/8 inches to 50 inches.
2. Custom Engineering and Machining Services: Engineering design services, custom machining capabilities, and OEM development services for modified standard or custom-designed products to meet specific application requirements.
3. Core Restore Program: Restoration services for used housings to extend bearing and assembly system life, providing cost savings for customers.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Standard Locknut manufactures precision-engineered mounted bearings and accessories for industrial power transmission, including split and solid pillowblocks, flange cartridge bearings, mounted spherical and tapered roller bearings, locknuts, lockwashers, adapter assemblies, withdrawal sleeves, and seals. The product range covers shaft sizes from 1-3/8 inches to 50 inches in standard and customized configurations, sold primarily to industrial distributors and OEM manufacturers, with in-house engineering, custom machining, and a Core Restore bearing refurbishment program.

Product overview

Standard Locknut is a U.S.-based manufacturer of precision-engineered mounted bearings and accessories with over 75 years of experience. The company offers a broad portfolio of products including split pillow blocks (SAF series), solid pillow blocks (MMW/Miether), flange cartridge blocks (FCL/Miether), mounted spherical roller bearings (S2000 SLN-I), mounted tapered roller bearings (Type E SLN-I), adapter assemblies, locknuts, lockwashers, withdrawal sleeves, hydraulic adapters, and seals/caps. The product range spans shaft sizes from 1-3/8" to 50" in both standard and customized configurations. The I-Power series represents the company's advanced engineered bearing lineup. Following the acquisition of Jones Bearing Company (est. 1890) and the Miether product line, Standard Locknut's portfolio serves distributors, OEMs, and heavy industries including moveable bridges, stadium roofs, and dam gates.

Differentiator

Problem solved

Functional benefit

Brands

• Miether: Product brand for mounted solid pillowblock bearings (MMW series) and mounted flange cartridge bearings (FCL series), featured in the SLN and Miether product catalog.

Products and services

• SAF – Mounted Split Spherical Roller Pillowblock Bearing

Quantifiable outcome

• Shaft sizes from 1-3/8 inches to 50 inches
• +1 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Jones Bearing CompanycoreStrategic or Co-development Partner · 1 July 2026Standard Locknut acquired Jones Bearing Company, a trusted name in heavy industry since 1890. This acquisition expands Standard Locknut's engineered bearing solutions portfolio and strengthens their market position in the industrial power transmission components sector.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• NSK Ltd. NSK is a global manufacturer of ball and roller bearings including mounted bearing units sold through industrial distribution; comparable to Standard Locknut in product offering and customer base, though at materially larger scale.
• The Timken Company: Timken is a major US-based manufacturer of tapered roller bearings, mounted bearings, and power transmission components with overlapping industrial distributor and OEM customer bases and a comparable Made-in-USA heritage.
• SEALMASTER (Emerson/RBC): Sealmaster is a heritage mounted bearing brand (ball and roller bearing pillow blocks) competing head-to-head with Standard Locknut's mounted bearing product line in the same industrial distribution and OEM channels.
• JTEKT (Koyo Bearings): JTEKT's Koyo brand produces ball and roller bearings, including mounted bearing units, and competes with Standard Locknut in industrial distribution channels in North America.
• NTN Corporation: NTN manufactures a broad range of ball and roller bearings including mounted bearing units, serving industrial distributors and OEMs in the US market with overlapping product categories to Standard Locknut.
• Dodge (ABB Dodge): ABB's Dodge brand is the historical leader in mounted bearings (spherical and tapered roller pillow blocks) in North America, directly competing with Standard Locknut's SAF, S2000, and Type E product lines in the same distributor and OEM channels.

Broad incumbents

• Regal Rexnord: Regal Rexnord offers a broad portfolio of power transmission products including bearings, gear drives, and conveying components; its product breadth and industrial distribution footprint make it a comparable incumbent to Standard Locknut in many of the same end-markets.
• SKF: SKF is the world's largest bearing manufacturer with a broad portfolio of rolling bearings, mounted bearings, and seals serving every industrial segment; it competes with Standard Locknut across the full product range but at much larger scale and global reach.
• Schaeffler Group (INA/FAG): Schaeffler produces a comprehensive line of rolling bearings, mounted bearing units, and related industrial products under INA and FAG brands, overlapping with Standard Locknut across industrial distributors and OEM applications in the US.

Emerging players

• McGill (RBC Bearings): McGill, part of RBC Bearings, produces specialty mounted and cam follower bearings for industrial applications; it overlaps with Standard Locknut in selected mounted bearing categories and serves adjacent industrial OEM customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/StandardMiether
• YouTubeyoutube.com/watch?v=E_8fOHuHdEI
• Facebookfacebook.com/Standard-Locknut-LLC-2051538231640557
• LinkedInlinkedin.com/company/standardmiether

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 records

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 Standard Locknut