
#1 Machining Parts Manufacturers in the US.
We’re the machining parts manufacturers that deliver extraordinary value by streamlining contract machining through automation and process control.
We are one of the few machining parts manufacturers that specialize in superalloy manufacturing solutions by machining Inconel, Monel, and other nickel-based, high-temperature alloys.
OEMs nationwide rely on us for highly accurate and reliable precision parts from 1” to 18” in diameter.
We’re growing alongside our customers.
Read about our expansion plans.
ISO 9001:2015 / AS9100D / ITAR
Tell us about the parts you need. We value your time and will get back to you promptly.

Discover how we streamline complex parts. Visit us at these upcoming trade shows.
WESTEC | October 7-9
How we machine
nickle-based
superalloys
Machined Parts
Our high-technology machine shop brings exacting quality at every step. We produce and deliver precision machined parts — accurately and on time.
Manufacturing Services
Our Design for Manufacturing (DFM) review and comprehensive services compress time to streamline outsourcing.
Materials Expertise
Whether working with nickel-based superalloys, stainless steels, or nonferrous metals, our skilled machinists know how to meet your tolerance and delivery requirements.

How we
streamline your process
We’re machining parts manufacturers that provide fast, innovative solutions, grounded in DFM experience and a service-minded approach that sets us apart from other precision manufacturing machine shops.

Walking Side-by-Side Our Customers Into the Future
You can’t make parts for the future using stone age equipment. That’s why JR Machine continually invests in the most advanced CNC machines for complex parts.

News
From the latest investments in technology, article placements to community service, hear what’s new from JR Machine, Wisconsin Manufacturer of the Year.

Op-ed: A Trump Presidency Means More Money for Space. So, What Can We Expect?
With space a focus of the new administration, and SpaceX founder Elon Musk as a senior advisor, we can expect…
JR Machine was recognized for financial performance, technological advances, product development, environmental solutions and sustainability, operational excellence and continuous improvement, commitment to employees and the future workforce of Wisconsin, and effective research and development.
TP
Todd P.
OEM of a custom accumulators and hydraulic starters company
“ JR has been a premier partner in our success for many years. They continue to innovate their production methods and machines, saving us time and money. They brought us hard turning long before it was a mainstream method! ”
TJ
Tom J.
Purchasing manager for a custom hydraulic cylinders company
“ We have been doing business with JR Machine for a long time. Over the years, JR has increased their position as a strategic partner by offering value add services to complement our production needs. From inventory management to on-time delivery to superior quality, it’s hard to find a better partner. That is why JR was awarded our supplier of the year award for 2019. World class does not only describe the facility and equipment, but also their most important asset of all, people. ”
LC
Lisa C.
Purchasing manager for a coating solutions company
“ JR Machine has always been a reliable and trusted partner in our business. When I need to outsource any machining work, they are the company I look to first! They have an amazing team that is very knowledgeable, professional, helpful and friendly. As a buyer, it’s always great to find a supplier that makes my job easier and JR Machine is definitely that supplier! ”