Electronics & Semiconductor Manufacturers
LMI Manufacturing
W352 WI-33, Hartford, WI 53027, United States
- Contract manufacturer / job shop
- Founded 1960
- 35 employees
- ISO 9001:2015
About LMI Manufacturing
LMI Manufacturing operates from a 40,000-square-foot facility in Hartford, Wisconsin. The company was founded in 1960 on a family farm in the Midwest by Lloyd Luedtke, who invented the Luedke Hay Mover/Hay Conditioner to reduce harvest time for local farmers. After decades of agricultural equipment innovation — including a bale thrower patented for Ford Motors — the business transitioned into a full-scale welding and fabrication shop. In 2018, Ryan Konicek purchased the company and invested in facility renovations and expanded capabilities. Today LMI provides end-to-end metal fabrication for OEMs nationwide. Core processes include 6 kW fiber laser cutting (up to 79" × 158"), offline-programmed press brake forming, manual and robotic welding certified to 1-inch thickness, CNC milling and turning, and turnkey assembly — all under one roof. The shop also runs turret punching, sawing, grinding, roll forming, and tube bending, with finishing and powder coating coordinated through local partners. A team of roughly 35 employees works across robotic welding cells, CNC machining centers, and precision press brakes. The company serves OEMs in food processing and packaging (stainless-steel trays, molds, washdown-ready weldments), electrical and power distribution (custom enclosures, lugs, welded assemblies), industrial machinery (large welded frames and system components), data centers (server-room cabinets and hardware), material handling and logistics (conveyor supports, lift-system assemblies, brake components), and agriculture (structural weldments for soil-prep and irrigation equipment). Medical and healthcare customers are also noted. LMI emphasizes in-house control from laser cutting through final assembly, which shortens lead times and improves traceability. The company reports that 80 percent of quotes are returned within 24–48 hours, and it reserves 20 percent of shop capacity for emergency jobs. Certified welds, QA tracking, and ISO 9001:2015 certification support repeatable quality, while real-time shop-floor dashboards enable accurate lead-time commitments. Average production lead time is two to three weeks, with rush options available.
Manufacturing capabilities
Core processes
Finishing & coating
Inspection & quality
Assembly & services
Industries served
- Food Processing & Packaging
- Electrical & Power Distribution
- Industrial Machinery
- Data Centers
- Material Handling & Logistics
- Agriculture & Dirt Movement
- Medical & Healthcare
Materials
Stainless steel
Equipment
- 6 kW fiber laser (79" × 158" bed)
- Robotic welding cells
- CNC machining centers (multiple, travels up to 60" × 30" × 28")
- Precision press brakes (28–350 ton, 10–12 ft die surface)
- Turret punch press (58 stations, 30 RPM)
- Roll forming machine (8" roll diameter, 6 ft bed)
- CNC milling machines (spindle up to 12,000 RPM)
- CNC turning centers (spindle bore 3.02", 7,500 RPM)
- Sawing equipment
Company details
- Location
- Hartford, Wisconsin
- Company type
- Contract manufacturer / job shop
- Employees
- 35
- Founded
- 1960
- Production volume
- Low to mid-volume; prototype to production
- Lead time
- 2–3 weeks average; rush capacity available (20% reserved)
- Tolerances
- ±0.0004" repeatability (laser); ±0.005" (press brake forming)
- Certifications
- ISO 9001:2015
Frequently asked questions
Where is LMI Manufacturing located?
LMI Manufacturing is located at W352 WI-33, Hartford, WI 53027, United States.
What does LMI Manufacturing do?
LMI Manufacturing is listed under Electronics & Semiconductor Manufacturers, and its listed capabilities and products include Laser cutting (6 kW fiber, up to 79" × 158"), Metal forming (offline-programmed press brake), Welding (manual and robotic, certified up to 1" thick), CNC machining (milling and turning), Assembly (turnkey subassemblies and component integration) and Turret punching (58-station).
What industries does LMI Manufacturing serve?
LMI Manufacturing lists Food Processing & Packaging, Electrical & Power Distribution, Industrial Machinery, Data Centers and Material Handling & Logistics among the industries it serves.
What certifications does LMI Manufacturing have?
Certifications on file for LMI Manufacturing: ISO 9001:2015.
When was LMI Manufacturing founded?
LMI Manufacturing was founded in 1960 and has 35 employees.
How do I request a quote from LMI Manufacturing?
Use the Request a quote button on this page to send LMI Manufacturing your requirements through FirmsLedger, or call (262) 629-5527 and visit lmimanufacturing.com.
What companies are similar to LMI Manufacturing?
Other Electronics & Semiconductor Manufacturers in Wisconsin listed on FirmsLedger include ECM USA, Cerac, Inc. and Oberlin Filter Company.