Why Boston Centerless?

Boston Centerless is the proven and trusted leader for high precision bar materials and services. The precise straightness and roundness of our products deliver greater production speeds and longer tool life, reducing your manufacturing costs and time.

What sets us apart is our unique ability to consistently hold extremely tight tolerances, resulting in unmatched downstream savings. Boston Centerless is a one-stop source offering a complete line of  bar products, and grinding services. And we offer the highest level of customer service available in the market-- demonstrated with over fifty years of customer loyalty.

Our AccuRod® products and custom grinding capabilities are ideal for Swiss Screw Machines (SSM’s) designed to produce high quality, dimensionally precise parts and components. Our customers include Medical Device, Dental Implant, Automotive, Defense, Aerospace / Aircraft, Industrial, and Contract Manufacturers who demand greater precision from the components that are designed into their products.

We invite you to explore the details behind the benefits of using Boston Centerless AccuRod® materials on your CNC Swiss machines.


  • Over 55 years of knowledge and expertise in precision grinding
  • A commitment to produce only the highest quality precision ground bar products
  • Long term relationships with producing mills ensure a seamless supply chain and trouble free bar products to our customers


  • Highly responsive quotation process – most answered within 24 hours
  • Team of Inside Sales Representatives devoted to servicing your requirements and providing timely quotations
  • Regional Sales Managers located in key geographic markets serving as your local contact with Boston Centerless


  • Extremely round and straight – minimizes vibration
  • Very tight tolerances, consistently held along the entire length
  • Potential for greater run rates and improved tool life

CNC Swiss / Benefits of Precision

  • Consistency of size tolerance and roundness enables tighter tolerance in finished parts
  • Excellent straightness minimizes vibration allowing higher RPM’s and greater tool life
  • The dimensional integrity of AccuRod® can result in fewer machine operations and less post-op grinding

Lean Process

  • Relentless elimination of waste through continuous improvement
  • Short lead times and excellent delivery performance
  • Winner of Shingo Prize Northeast for Excellence in Lean Manufacturing


  • Material delivered when you want it in the quantity you forecast
  • Minimize working capital tied up in inventory and WIP

Inventory and Sourcing

  • Vendor Managed Inventory (VMI) programs contribute to reduced inventory and WIP
  • Strategic relationships with the highest quality specialty metals producers in the industry
  • The sourcing experts at Boston Centerless can locate the specialty materials you need to run your operation


Comments from customers regarding their experience with Boston Centerless as their supplier.


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