CNC Centerless Thru-Feed 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 Thru-Feed Grinding Services

Midway Grinding Inc. offers thru-feed centerless grinding for applications where the largest outside diameter only is to be ground.

Thru-feed grinding is best suited to grind straight, cylindrical partis with minimal slots and no interfering projections. Parts are ground by being fed in and out through regulating and grinding wheel in a straight line to ensure maximum grinding efficiency and therefore minimum costs.

Our Equipment

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

Our facility is equipped with several CNC models of centerless thru-feed grinders which provide the highest level of stability, performance, and repeatability.

We handle dimensions ranging from .050 to 5 inches in diameter and lengths up to 6 ft.

  • Tolerances to .00005"
  • Low cost, high speed, precision OD grinding

Benefits of 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 (Thru-Feed Grinding) Capabilities


  • High Precision Grinding
  • Maximum Efficiency Grinding
  • Minimum Cost Grinding

Dimensional Specifications

  • Diameters from .050” to 5”
  • Lengths up to 12 ft.


  • Diameter tolerance to .000080”
  • Surface finish to 4RA Max
  • Roundness to .000025” Max
  • Straightness to .000050” Max


Inspection Services

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


  • Bars
  • Bushings
  • Gears
  • Hydraulic Components
  • Pneumatic Components
  • Pins
  • Pistons
  • Printing Rolls
  • Shafts
  • Sleeves
  • Spindles
  • Spools
  • Tubes
  • Valves

Industries Served

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

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Frequently Asked Questions

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