Centerless In-Feed/Plunge Grinding Services

CNC Centerless Grinding at Midway Grinding Inc.

Centerless grinding is a process that holds the workpiece in the center between two grinding wheels that turn in the same direction. The left side grinding wheel stays in position as it spins. As it rotates, it applies a downward force towards the platform that holds the workpiece in place.

Forms of CNC Centerless Grinding

Midway Grinding Inc. offers CNC centerless grinding which include thru-feed and infeed/plunge grinding services.

Centerless In-Feed/Plunge Grinding Services

Midway Grinding Inc. offers centerless in-feed grinding services with precision and accuracy unmatched by competitors.

We have the capability of grinding multiple diameters of different sizes in one plunge as well as grinding complex angles and radii. We specialize in holding close tolerances, and in some cases lead times less than 24 hours.

Our Equipment

Midway Grinding Inc. invests in the latest equipment and technology to provide our customers with the highest quality components, parts, and services.

We are equipped with CINCINNATO MILACRON models of centerless and CNC centerless grinders, most of which are remanufactured and retrofitted with CNC dressers on either the grinding wheel, or both regulating and grinding wheels.

The CNC dressers allow us to take a more creative approach to each application, often saving time and money by substituting centerless grinding in place of more costly multi-process grinding applications.

Benefits of CNC Centerless Grinding

CNC centerless grinding saves time and money. As a result of the parts being loaded automatically, the process is quicker and easier to load parts into a centerless grinder. Also, projects smaller in size can be loaded in large quantities.

Centerless Grinding (Infeed/Plunge Grinding) Capabilities


  • Complex profile and radii plunge grinding
  • CNC Dressers
  • Multiple diameters in one plunge
  • Quantities from a single piece to millions of pieces
  • Possible lead-times as little as 24 hours

Dimensional Specifications

  • Diameters from .090” to 5”
  • Lengths up to 20”


  • Diameter Tolerances to .000080”
  • Surface Finish to 4R
  • Roundness to .000025” Max
  • Straightness to .000030” Max

Inspection Services

Operator and quality personnel inspections per ISO 9000 quality standards, customer requirements, or control plans.


  • Bushings
  • Gears
  • Hydraulic Components
  • Pneumatic Components
  • Pins
  • Pistons
  • Printing Rolls
  • Shafts
  • Sleeves
  • Spindles
  • Spools
  • Valve

Industries Served

  • Automotive
  • Aerospace
  • Appliance
  • Heavy Equipment
  • Pneumatics
  • Hydraulics
  • Food Services
  • Other

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Frequently Asked Questions

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