Manufacturing Technician - Grinding

Mitsubishi Heavy Industries, Ltd.•Sutton, MA

1d•$27 - $41•Onsite

About The Position

Primetals Technologies USA is a leading partner for engineering, plant construction and lifecycle services in the metal industry. We provide innovative and practical solutions to support our customers with long-term sustainability goals and their increased competitiveness. We believe the technical and economic know-how of our employees is the key success factor of our company. At Primetals Technologies, you are encouraged to learn, grow, develop and contribute. Come join the 7,000 employees worldwide working at Primetals Technologies, a Group Company of Mitsubishi Heavy Industries. Factory Operations is seeking a highly skilled Level 3 Grinding Machinist with expertise in manual and CNC OD/ID cylindrical grinding. This role is responsible for independently setting up, programming, and operating Studer, Danobat, and Campbell CNC OD/ID grinders, as well as manual grinders to produce high-precision components. This is a senior-level position requiring strong technical judgment, the ability to solve complex machining challenges, and the capability to lead and mentor others. The successful candidate is expected to achieve independent productivity shortly after onboarding and contribute to process improvements and operational excellence. This role offers a career path toward Manufacturing Team Lead or Manufacturing Engineer, with company-supported development and advancement opportunities.

Requirements

5+ years with advanced CNC and precision grinding experience
Proven ability to hold tolerances of ±0.0001”
Experience achieving high-polish surface finishes down to 8 Ra or better
Strong understanding of how grinding parameters change for hardened tool steels, carbide, stainless steel, and specialty alloys
Advanced understanding of grinding principles, materials, and process dynamics
High competency with precision measurement instruments
Demonstrated initiative, problem-solving ability, and technical leadership
High School Diploma or equivalent (Technical School preferred)

Responsibilities

Independently set up, load and verify programs, set part zeros, and run multi-diameter CNC cylindrical grinding machines
Perform complex grinding operations including finishing and polishing
Set up and utilize appropriate workholding methods including centers, chucks, and steady rests for complex geometries
Monitor and verify micro-inch surface finishes (Ra) using profilometers
Select, mount, and balance appropriate grinding wheels (Aluminum Oxide, Silicon Carbide, or CBN) based on material specifications
Perform wheel dressing and truing to maintain form, finish, and dimensional accuracy
Develop, modify, and optimize CNC programs using Fanuc or OEM programming software
Perform geometry and thermal offset adjustments on CNC controllers to correct wheel wear and material changes
Optimize grinding parameters to balance surface finish, cycle time, and wheel life
Lead or drive process improvements to reduce setup time, cycle time, and scrap
Interpret complex blueprints and GD&T with multiple datums
Perform in-process and final inspections to ensure conformance to the drawing
Train and mentor other operators across the CNC and manual grinders
Serve as a technical resource and role model for grinding best practices
Apply lean manufacturing principles (SMED, 5S, value stream mapping, etc.)
Identify and resolve surface finish and burn issues using root cause analysis