About Us

M&M Quality Grinding is a leading manufacturer of precision ground bar stock, and a provider of contract bar processing services. With over 40 years of experience in centerless grinding, bar straightening, bar polishing, bar chamfering, precision saw cutting, and specialty packaging, we have built our reputation on delivering exceptional tight tolerance ground bars for customers throughout North America and beyond.

We carry an extensive inventory of precision ground bar stock and oversized material for CNC turning and CNC Swiss machining shops that are producing parts for the medical, automotive, aerospace, military and a variety of other demanding industries. We also offer a full-service centerless grinding facility for customer supplied material.

Whether you are looking for a partner that can process your own material, or need to purchase precision ground bar stock, M&M Quality Grinding provides a comprehensive array of products and services to meet your needs.

What Makes Us Unique: Precision and Excellence in Everything We Do

Our customers have come to depend on us as key partners in their success and growth strategies.  We bring extensive centerless grinding experience to the table and provide insight for opportunities on how to improve the efficiencies and output of their machining operations and materials centers.

  • Over 40 years’ experience in centerless grinding (many team members have over 30 years’ experience)
  • Strong vendor relationships including mill partnerships
  • Automated production lines
  • Extensive number of machines
  • Quick turnaround times
  • Fast quoting capabilities
  • Strong management commitment to innovation and technology
  • ISO Certification
  • Ability to grind metals and thermoplastics
  • Tight tolerance capabilities (to +/- .0001”)
  • Surface finishes to 6RMS
  • Strong partnerships with finishing service companies for heat treating, etc.

Our Facilities and Our Team

M&M Quality Grinding has been operating in the Chicago metro area for over 40 years – making it easy and efficient to ship ground bar stock to our customers in North America, and their operations around the globe.

The M&M team brings an exceptional combination of deep experience, a strong commitment to excellence, and a passion for providing innovative solutions. This is a team that doesn’t just work hard but knows how to get the job done well and exceed expectations at every step. They care deeply about providing the highest quality precision ground bar stock and bar processing services, so our customers succeed as well.

To learn more about the M&M Grinding facility and team, visit our Facility and Team page.

Mission, Vision, Values

To build an organization that offers excellent solutions to its customers, thrives on operational excellence, cares deeply about its team members and its community, and strives for not just continuous improvement, but to leave a legacy, M&M Quality Grinding has developed Mission, Vision and Values that encompass a deep understanding of creating value at every step of its way.

To learn more about M&M Quality Grinding’s foundational strategy, visit our Mission, Vision and Values page.


As an ISO 9001:2015 certified manufacturer, M&M Quality Grinding has built our company by implementing a Quality Management System that allows us to deliver exceptional quality, service and support our customers.

To learn more about the M&M Quality Grinding Quality Management System, check out our Quality page.  A copy of our ISO 9001:2015 certificate is available there.

More about us can be found by following us on LinkedIn, Facebook and Instagram.

Precision & Excellence since 1981

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