Established in Wisconsin we have local roots in the manufacturing industry.
100,000 sq foot machine shop - Our locally owned and operated machine shop is conveniently located in Hartland, Wisconsin.
Our Services Include:
Quoting and New Product Development
On-Site Support
New Product Development with design for manufacturability assistance
In house Quality and Engineering lab.
Lean Manufacturing Services:
JIT
Kanban
Product To Order
EDI
Bar Coding
CAD/CAM using Espirit
SolidWorks & ProE
ERP Software functionality.
Neosho Trompler has the ability to create Custom Fixtures On Site using materials including steal, stainless, aluminum and plastic to meet a wide variety of needs.
Sawing
Turning and Machining (Milling, Drilling and Tapping)
Forgings
Raw Bar Stock Forming
Sub-Assembly to Component-Part Processing.
We strive for top notch quality in everything that we do. That's why we follow ANSI and ISO standards as well as APQP, FMEA, and PPAP frameworks in our design and manufacturing processes. We are proud to be ISO 9001-2015 Certified.
In 1956, during the tumultuous Communist Revolution in Hungary, Lorant and Margit Trompler fled their homeland and found refuge in the United States. They made their way through Austria before ultimately settling in Wisconsin, where they had family ties. With nothing but the clothes they wore, a profound hope for the future, and an unwavering determination to succeed, they began their new life. Lorant secured a job with a German-speaking tool and die maker and started collecting scrap metal, which he used to lay the foundation for his own shop.
In 1967, Lorant and Margit Trompler founded The Trompler Company. Lorant dedicated himself to establishing a reputation for quality by meticulously crafting each piece and ensuring exceptional standards were met. His commitment to excellence quickly garnered respect within the industry, and the company's name became synonymous with superior machine shop work. As The Trompler Company’s reputation grew, Lorant began expanding his team to meet increasing demand.
In 1991, Christina, their daughter, assumed the role of president, guiding the company through a phase of rapid expansion. Under her leadership, the company invested in advanced machinery, expanded its client base, and implemented an aggressive growth strategy, ensuring the continued success of The Trompler Company.
Neosho Custom Tool, Inc. was started in a garage in June 1979 and continued its growth over the next few decades. Jerry Emmerich purchased the company in 1994. He oversaw a period of steady growth and serviced numerous customers.
In 1995, Jerry Emmerich and Christina Trompler crossed paths as industry competitors. Their professional rivalry soon blossomed into a friendship, grounded in mutual respect and admiration for each other's businesses. As they got to know each other better, their bond deepened, leading to their marriage in 1999.
Neosho Trompler Inc.
In 2000, Trompler Inc. and Neosho Custom Tool combined forces to form Neosho Trompler Incorporated (NTI). Today, NTI stands as one of the premier production machine shops in the region, dedicated to delivering the finest machined products to our customers. Despite our significant growth and modernization, we proudly remain a family-owned business. We focus on meticulous attention to detail, uphold exceptional quality, and provide superior value at a fair price. Our family's journey to America was driven by the desire for a better life, and we have achieved success by serving American Industry with excellence.
Neosho Trompler’s 100,000 sq. ft. facility in Hartland, Wisconsin, is equipped for precision and performance. With 39 CNC machines—including multi-spindle, horizontal, and large-capacity options—we’re built for both complexity and volume.
From engine lathes to pallet-changing horizontals, our equipment gives us the flexibility to deliver top-tier machining solutions.
Click below to explore our complete machine lineup and specifications.
From concept to completion, Neosho Trompler delivers precision machining for multiple industries.
Click below to see how our capabilities can serve your business.
Looking to build a career in manufacturing? Neosho Trompler is hiring!
We’re always on the lookout for skilled, motivated individuals.
Curious about the quality we’re known for?
Click below to explore our products in greater detail.
Equipped with an extensive machine lineup, Neosho Trompler is built to handle your toughest requirements.
Check out our capabilities list to find out what we can do for you.
Neosho Trompler has been awarded the SMITHERS Quality Assessments ISO 9001:2015 Certification
Neosho Trompler has been awarded the CATERPILLAR Supplier Quality Excellence Process award starting in August 2009.
Neosho Trompler is recognized as a Women Owned Business Enterprise.
Neosho Trompler has achieved the CATERPILLAR MQ11005 Standard on a bronze level.
Neosho Trompler is recognized as a disability rights employer support silver award achiever.
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Neosho Tromper Inc.
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