Gem Manufacturing

What Gem Manufacturing does

Gem Manufacturing, Inc. is a privately held precision CNC contract manufacturer founded in 1974 and headquartered in a 30,000 sq ft temperature-controlled facility in Kenosha, Wisconsin. The company specializes in mid-to-high volume CNC turned and milled products, producing over 2,000 different parts annually in volumes ranging from 100 to 600,000 units, with documented tolerances to 0.0003 inches. Its capital base includes 35+ conventional machines, 27+ CNC turning and milling centers (60% under nine years old), bar feeders, gantry robots, horizontal and vertical mills, and an 800 sq ft automated inspection lab housing three CMMs. The firm is ISO 9001:2015 registered under Verisys Registrars (#G021507), has sustained quality certification for nearly two decades, and reports Lean Six Sigma black and green belts on staff alongside 100+ years of combined hands-on experience in its management and supervisory teams.

The company operates a direct-to-OEM sales model targeting five primary verticals: agriculture, hydraulics, material handling, energy, and fluid handling (with a secondary footprint in food processing). It manufactures a portfolio of components including spacers, bearing housings, oil pump housings, starter housings, transmission covers, levers, shafts, pins, plates, barrels, cam rings, covers, locking hubs, and end covers, sourced from materials such as ductile iron, gray iron, SS304, 4140, 1045, and 12L14. Differentiated processes include hard turn machining of hardened alloy bar (HRC 35+), multi-axis lathe operations, and casting-to-bar conversions that have demonstrated yield improvements from 65% to 97% and lead-time reductions from 15 weeks to 3–4 weeks in published case studies.

Gem generates revenue through quote-based contract manufacturing agreements, with pricing determined by part complexity, volume, material, and post-machining requirements, and billing structured around multi-year production contracts. Single-source responsibility is provided through audited post-machining partners for heat treating, grinding, plating, gun drilling, and welding. The company's competitive narrative emphasizes process engineering, lean manufacturing, continuous improvement (5S, Kaizen), and supplier-managed Kanban inventory systems. No public funding events, ownership transactions, or M&A activity have been disclosed, and the firm is described as founder/management-owned with no institutional investor backing.

Name

Gem Manufacturing

Legal name

GEM Manufacturing, Inc.

Website

https://gem-mfg.com

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

11–50 employees

Short description

Gem Manufacturing is a privately held precision CNC contract manufacturer founded in 1974 in Kenosha, Wisconsin, producing over 2,000 turned and milled parts annually for OEM customers across agriculture, hydraulics, material handling, energy, and fluid handling industries.

Ownership category

akta.pro rank

Headquarters

HQ city

Kenosha

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. CNC Manufacturing Services: Contract manufacturing services for CNC turned and milled products. GEM manufactures over 2,000 different parts annually in volumes from 100 to 600,000 units. Revenue is generated through production contracts with OEM customers across various industries including agriculture, hydraulics, material handling, energy, and fluid handling. The company emphasizes single-source responsibility covering machining, finishing, and assembly.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Gem Manufacturing is a contract manufacturer specializing in mid to high volume CNC turned and milled products. The company manufactures over 2,000 different parts annually in production volumes from 100 to 600,000 units, serving OEM customers in agriculture, hydraulics, material handling, energy, fluid handling, and food processing industries. Services span CNC machining, quality engineering, supply chain management, and post-machining secondary processes including heat treating, grinding, plating, gun drilling, and welding.

Product overview

GEM Manufacturing is a contract manufacturer specializing in mid to high volume CNC Turned and Milled products. They manufacture over 2,000 different parts annually in volumes from 100 to 600,000. Their core CNC Machined Parts service (Milling and Turning) is complemented by Quality, Engineering and Supply Chain Services, and Secondary Processes including heat treating, grinding, plating, gun drilling, and welding. The company serves multiple industries including agriculture, hydraulics, material handling, energy, and food processing, working with materials such as ductile iron, gray iron, stainless steel (SS304), and alloy steels (4140, 1045, 12L14). Part tolerances can be held to 0.0003 inches.

Differentiator

Problem solved

Functional benefit

Products and services

• CNC Machined Parts (Milling and Turning) Contract manufacturing service specializing in mid to high volume CNC turned and milled products. GEM manufactures over 2,000 different parts annually in volumes from 100 to 600,000 units for OEM customers across agriculture, hydraulics, material handling, energy, fluid handling, and food processing industries. Tolerances held to 0.0003 inches across materials including ductile iron, gray iron, stainless steel (SS304), and alloy steels (4140, 1045, 12L14).
• Quality, Engineering and Supply Chain Services Comprehensive quality management certified to ISO 9001:2015, engineering services including design for manufacturability (DFM), GD&T, and process validation (APQP, PPAP, ISIR, C of C), and supply chain management with supplier-managed inventory, MRP integration, warehousing, and Kanban pull systems for OEM customers.
• Secondary Processes Post-machining finishing services including heat treating, grinding, plating, gun drilling, and welding managed through qualified and audited supplier partnerships, enabling single-source responsibility for finished parts delivery to OEM customers.

Named customers3 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core, supporting and minor.

• Post-Machining Process SupplierscoreOthersGEM partners with leading providers of post-machining processes including Heat Treating, Grinding, Plating, Gun Drilling, and Welding. These suppliers are audited and qualified per GEM's Quality System, with many in the supplier base for decades. GEM's supply base is controlled through their quality systems to supply parts complete.
• MasterCAMsupportingTechnology or IntegrationGEM utilizes MasterCAM software for CAD/CAM operations and parametric tool path development. The software is used daily for machining operations to create efficient tool paths that mimic complex geometries previously achieved through casting processes.
• AutoCADsupportingTechnology or IntegrationGEM uses AutoCAD for CAD/CAM operations and part print documentation. The software is part of their daily operations alongside MasterCAM.
• MinitabsupportingTechnology or IntegrationGEM uses Minitab for statistical analysis as part of their quality management and process capability analysis operations.
• IndeedminorOthersGEM posts current job opportunities through Indeed.com, directing job seekers to apply through the platform for positions at their Kenosha, WI facility.
• Ductile Iron Bar SupplierssupportingOthersDeveloped strategic supply relationships to incorporate stocking programs for ductile iron bar in specific sizes needed for manufacturing operations. Suppliers are audited and qualified per GEM's Quality System.

Scale indicators8 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Protolabs: Publicly traded digital manufacturer offering CNC machining, injection molding, and sheet metal services for prototypes and low-volume production. Comparable as a contract machining provider but operates at vastly greater scale and with automated quoting/digital channels.
• Precision Castparts Corp: Large-scale precision metal components manufacturer serving aerospace and industrial OEMs. Comparable in the precision machined components space but at substantially greater scale and with much broader vertical integration.

Direct peers

• Astro Metal Craft: Wisconsin-based precision CNC machining and fabrication contract manufacturer serving industrial OEM customers. Directly comparable in geography, scale band, and customer profile to GEM.
• Hoosier Precision: Indiana-based CNC precision machining contract shop serving industrial OEM customers. Comparable Midwest precision machining peer with similar mid-market customer base and capabilities.
• Pioneer Service Inc. Chicago-area CNC machining and contract manufacturing provider serving industrial OEM customers. Directly comparable Midwest precision machining peer in similar scale band.
• Mid-State Machine Products: Wisconsin-based CNC machining and contract manufacturing company serving OEM customers. Comparable Midwest peer with similar precision machining capabilities and customer profile.
• Jagemann Stamping Group: Wisconsin-based metal stamping and precision components manufacturer serving industrial OEMs. Comparable as a Wisconsin precision metal components manufacturer serving similar OEM verticals.
• Metalcraft Industries: Midwest metal fabrication and CNC machining contract manufacturer serving OEM customers. Comparable as a precision contract manufacturer serving industrial OEMs in similar geography.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/robgemmfg
• Facebookfacebook.com/profile.php

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

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 Gem Manufacturing