CNC Machinist – Horizontal Milling Center – Boring Bar

## CNC Machinist – Horizontal Milling Center – Boring Bar Apply locations:
South Milwaukee, Wisconsin time type:
Full time posted on:
Posted Todayjob requisition :
R
** Career Area:
** Operations
*
* Job Description:

**** Your Work Shapes the World at Caterpillar Inc.
** When you join Caterpillar, you're joining a global team who cares not just about the work we do – but also about each other.  We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here – we make it happen, with our customers, where we work and live.

Together, we are building a better world, so we can all enjoy living in it.#
** CNC Machinist – Horizontal Milling Center – 2nd Shift
***
* Location:

** South Milwaukee, WI
** Shift:
** 2nd Shift (Full-Time)
** Bonus:** $2,000 Sign-On Bonus
** Pay Progression:*
* • Step 1: $30.86/hr
• Step 2: $32.14/hr
• Step 3: $33.42/hr
• Shift Premium: +$1.00/hr for 2nd shift#
** Job Summary
** The
** Large Boring Bar Machinist
** is responsible for setting up and operating CNC horizontal milling centers and large boring mills to machine precision components for heavy equipment manufacturing. This role supports the production of large structural weldments, castings, and forgings using advanced machining techniques and equipment. The ideal candidate thrives in a high-precision, safety-driven manufacturing environment and demonstrates strong technical machining skills, blueprint interpretation, and attention to detail.#

** Key Responsibilities
*** Set up and operate
** CNC horizontal milling centers and boring bar machines
** for large-scale machining
* Machine large steel components including
** weldments, castings, forgings, and plates
*** Interpret
** manufacturing work instructions, blueprints, and operation sequences
*** Align parts using fixtures, shims, parallels, clamps, and work holding devices
* Select and assemble appropriate tooling including
** boring bars, drills, taps, reamers, and milling cutters
*** Load, run, and verify
** CNC programs (G & M code)
** and conduct trial runs as needed
* Adjust machine parameters such as
** feeds, speeds, and offsets
** to maintain tolerances
* Perform
** precision machining operations** (boring, facing, drilling, tapping, counterboring)
* Conduct
** in-process inspection
** using micrometers, calipers, and other precision instruments
* Edit CNC programs and make manual adjustments where required
* Operate
** jib cranes and overhead cranes
** for material handling
* Maintain a clean and safe work environment in alignment with safety standards
* Support continuous improvement, quality initiatives, and team collaboration#
** Required Skills
*** 1–3+ years of
** hands-on CNC machining experience
*** Experience with
** horizontal boring mills or large machining centers
*** Ability to
** read blueprints and technical drawings
*** Strong understanding of
** machine shop math (including basic trigonometry)
*** Experience using
** precision measurement tools** (calipers, micrometers, gauges)
* Knowledge of
** G-code/M-code programming fundamentals
*** Understanding of machining processes and terminology
* Demonstrated commitment to
** workplace safety and quality standards**#
** Preferred Skills
*** Experience machining
** large steel structures or heavy equipment components
*** Familiarity with
** Fanuc and/or Siemens CNC controls
*** Experience with
** tight tolerance machining on large parts
*** Prior experience in
** heavy industrial or OEM manufacturing environments
*** Crane operation or rigging experience#
** Call to Action
** If you’re a skilled CNC machinist with experience in large-part machining, horizontal milling, or boring bar operations, this is your opportunity to make a meaningful impact in world-class manufacturing. At our
** South Milwaukee facility**, you won’t just machine parts — you’ll help produce critical components that support some of the
** largest and most powerful mining machines in the world**, including
** Cat Electric Rope Shovels (ERS)**. The work is massive in scale and complexity, requiring precision, craftsmanship, and a commitment to quality at every step.…