CNC Machinist​/OD Grinder

Position: CNC Machinist (ID/OD Grinder)
About the Organization

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.

RENK America is driven by this sense of pride and purpose in our country and our community.

Description

We are seeking a skilled and dedicated Grinder (OD/) to join our team. The Grinder will be responsible for operating and maintaining grinding machines, focusing on external (OD) and internal () grinding processes, The ideal candidate will have a strong attendtion to detail, excellent problem-solving skiills, and the ability to produce high-quality finished products. The hourly pay for this position starts at $27 per hour.

Essential Functions:

Machine Setup & Operation:

• 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.

Blueprint Reading & Quality Control:

• 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.

Process Optimization & Troubleshooting:

• 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.

Equipment Maintenance & Safety:

• 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.

Collaboration & Documentation:

• 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.

Position Requirements

Qualifications & Skills:

• High School Diploma or equivalent.
• Experience:
  
  Minimum 3 to 5 years of OD/ experience in a precision manufacturing environment, preferably in gear production.
• Technical Knowledge:
• 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.
• Blueprint & Measurement Proficiency:
• 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.
• Attention to Detail:
  Ability to hold tolerances within ±0.0001" and achieve high surface finish requirements.
• Problem-Solving:
  Strong troubleshooting skills to resolve machining issues and improve processes.
• Work Ethic:
  Reliable, self-motivated, and able to work independently or as part of a team.
• Safety Consciousness:
  Commitment to maintaining a safe and clean working environment.

Preferred Qualifications:

• 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…