CNC Machinist​/OD Grinder

Overview

RENK America is a leading supplier in the defense, marine and industry sector with superior mobility, propulsion and drive train solutions. Our tradition is centered on precision-engineered systems for maximum impact, efficiency and endurance. RENK's ambition is to support each and every one of its customers to exceed standards in harsh conditions and combat situations. RENK America employs over 500 employees at our US locations in Muskegon, Michigan, Cincinnati, Ohio, Camby, Indiana and Roseville, Michigan.

The hourly pay for this position starts at $27 per hour.

Grinder (OD/)

• Set up and operate OD and  machines to perform precision grinding operations on gears, shafts, and other cylindrical components.
• Select appropriate grinding wheels, tooling, and machine settings based on material type, blueprint specifications, and required surface finish.
• Balance and dress grinding wheels as needed to ensure precision and efficiency.
• Interpret engineering drawings, blueprints, and work instructions to determine grinding parameters.
• Use precision measuring instruments such as micrometers, bore gauges, dial indicators, and CMMs to verify part dimensions and tolerances.
• Maintain strict adherence to quality standards, identifying and correcting defects before they impact production.
• Adjust feeds, speeds, and grinding techniques to optimize cycle times while maintaining part integrity.
• Troubleshoot grinding-related issues, including chatter, burn, and dimensional inconsistencies.
• Work with engineering and quality teams to refine grinding processes and improve efficiency.
• Perform routine maintenance on grinding machines, including lubrication, coolant management, and wheel changes.
• Follow all safety procedures and wear appropriate PPE (Personal Protective Equipment).
• Keep the work area clean and organized, ensuring compliance with 5S and lean manufacturing principles.
• Communicate effectively with supervisors, engineers, and quality inspectors to resolve machining issues.
• Complete production logs, inspection reports, and other required documentation accurately.
• Participate in continuous improvement initiatives to enhance grinding processes and overall shop efficiency.

• High School Diploma or equivalent.
• Experience:
  
  Minimum 3 to 5 years of OD/ experience in a precision manufacturing environment, preferably in gear production.
• Proficiency in operating manual and CNC OD/.
• Strong understanding of grinding wheel selection, dressing, and balancing.
• Knowledge of various materials, including hardened steels, and their grinding characteristics.
• Ability to read and interpret GD&T (Geometric Dimensioning and Tolerancing) symbols on blueprints.
• Skilled in using micrometers, bore gauges, dial indicators, and CMMs for precision measurement.
• Ability to hold tolerances within ±0.0001" and achieve high surface finish requirements.
• Strong troubleshooting skills to resolve machining issues and improve processes.
• Reliable, self-motivated, and able to work independently or as part of a team.
• Commitment to maintaining a safe and clean working environment.

• Experience with CNC-controlled OD/ machines.
• Knowledge of gear manufacturing processes, including honing and center lapping.
• Previous experience in a high-precision aerospace, automotive, or defense manufacturing environment.
• Familiarity with lean manufacturing principles and continuous improvement methodologies.

• Standing for extended periods while operating grinding machines.
• Frequent lifting (up to 25 lbs.), bending, and handling of precision components.
• Exposure to coolant, grinding dust, and high-noise environments (with proper PPE provided).
• Working with high-speed rotating equipment requires focus and adherence to safety protocols.

This position is currently accepting applications.

RENK America is proud to be an Affirmative Action/Equal Opportunity Employer. RENK America is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws.

RENK America maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.