Since 1958, we have been delivering grinding solutions that push the boundaries of what’s achievable.

Every day, our team transforms challenging specifications into reality, handling sub- micron tolerances, complex geometries, and difficult materials that others turn away.

Capabilities and Tolerances

Ultra-Precise Thrufeed & Infeed Centerless Grinding

Thrufeed:

  • Diameters from 0.008” ( 0.2mm ) to 4.000” ( 100mm )
  • Lengths to 200.00” ( 5m ), and as short as 0.020”
  • Tolerances to ± 0.000025” ( 0.63μm )
  • Roundness to 0.00002” ( 0.5μm )
  • Surface finishes to ≤ 2 RA μin ( 0.05μm )

Infeed:

  • Diameters from 0.008” ( 0.2mm ) to 4.000” ( 100mm )
  • Plunge lengths to 10.00” ( 254mm )
  • Tolerances to ± 0.000025” ( 0.63μm )
  • Roundness to 0.00002” ( 0.5μm )
  • Surface finishes to ≤ 4 RA μin ( 0.1μm )

For bar grinding applications, see bar grinding.

Applications

  • Medical device — Rod, Tube, and wire based devices — Cannulae, Hypotubes, Robotic surgery implements, Endoscopic device wires, Guidewires/Corewires, Catheters, Dilator modifications, Mandrels, Prosthesis components, Nitinol, plastics ( PEEK, PTFE, etc. ), Tool collet pins, Taper grinds for dental applications, and more
  • Scientific & Testing equipment — Invar/Kovar tubing for glass to metal seals, Ceramic coated rods, ultra small pins, tungsten weights, refractory metal pins/rods/tubes, and more
  • Aerospace — Jet aero-structure components, hinge pins, specialty fasteners and bearings, landing gear components, Hydraulic system components-spool/sleeve match grinds, grind/plate/grind applications for FAA repair centers, test coupons, and more
  • Energy — Zirconium cladding tubes, specialty pellets, cooling system and pump components, Nickel and high temp alloys for oil and gas and chemical processing, and more
  • Automotive — High-performance valve-train components, rocker shafts, valves, push rods, roller-lifters, water pump shafts, and more
  • Defense — Small arms components, firing pins, actuation rods, fighter jet and missile pins, submarine components, and more
  • Space exploration — Satellite components, Ground support and moving vehicle components, Eccentric shafts, Ceramics, and more
  • Tool & Die — Custom drill blanks, punches, ejector pins, core pins, guide pins, alignment pins, etc.
  • Amusement — Ride and animatronic components – Nitrided, chrome-plated, and stainless shafts and wear components, bronze and aluminum parts, and more
  • General Industry — All manner of rods, linear and rotary shafts, pins, spools, tubes, bushings, sleeves, fasteners, mandrels, rollers, arbors, etc.

The Centerless Products Advantage

Rapid Response Service

Some projects can’t wait for standard lead times. Our expedited service dedicates machine capacity to quick-turn work without sacrificing precision. Most quotes return within two business days, with even faster turnaround when material is available.

Fast-track service features:

  • Priority scheduling for urgent needs
  • Flexible material sourcing options
  • Streamlined setup procedures
  • High precision standards always maintained

Engineering Partnership

We’re more than a service provider—we’re a technical resource for your team. Our engineers collaborate during product development, offering insights that improve manufacturability and reduce costs. This consultative approach saves time and prevents costly redesigns.

Collaborative support includes:

  • Design for manufacturing guidance
  • Material selection consultation
  • Process optimization recommendations
  • Prototype development assistance

Quality Assurance

Every project receives full dimensional verification and documentation. We maintain statistical process controls, implement in-process gauging, and work toward six-sigma capability across operations. Your specifications drive our quality standards—we meet them consistently.

Learn more about our process.

Getting Started

Ready to discuss your grinding requirements? Whether you’re facing a unique technical challenge or need a reliable partner for ongoing production, Centerless Products brings the expertise and capacity to deliver exceptional results.

Contact us to explore how our capabilities align with your needs. We’re ready to turn your most demanding specifications into finished components.