CNC Grinding

CNC cylindrical grinding is a specialty at Jewett Machine.

With capability to grind 14” in diameter and a meter long Jewett grinds super precision parts in high and low volume. Typical parts include precision shafts, rollers, and hubs. A variety of materials including hardened steels, tool steels, carbide tools and urethane parts are ground to precision tolerances. Centerless and surface grinding services are available for most metals.

Equipment List

  • 1 TOYODA Select GII 12″ x 39″
  • 1 Hanchett 42” vertical spindle rotary grinder
  • 1 Karstens K10-11 high precision universal cylindrical grinder
  • 1 Okuma GP-34N CNC cylindrical 12″ x 39″
  • 2 Surface grinders with maximum capacity of 12” x 48”
  • 2 Additional grinders

Industries Served

  • Aerospace
  • Automotive
  • Construction
  • Consumer
  • Government
  • HVAC
  • Industrial Components
  • Industrial Mixing Systems
  • Industrial Pumps
  • Industrial Valves and Fittings
  • Marine and Land Based Recreational Vehicles
  • Medical
  • Military
  • Safety
  • Tobacco

Cylindrical Grinding

Cylindrical grinding is a specialty at Jewett Machine. Our Okuma GP-34 CNC grinder with Okuma OSP 5020G control is the ultimate in precision and accuracy. It is augmented by two Karstens plain cylindrical grinders, one with an ID grinding attachment. Parts up to 14” in diameter and a meter long can be ground in this department.


  • 1 Brown & Sharpe MicroVal PFX w/PC-DMIS software & Renishaw PH9 probe We have a full complement of inspection equipment for in-process and final inspection
  • 1 Zeiss Eclipse series model 4064-20/24 CNC coordinate machine 40” x 64” x 24”


  • 1 3 CF Sweco vibratory finishing machine
  • 2 Trinco dry blast machines, maximum capacity 48” x 48”

Shop Floor Control

Jewett Machine employs state-of-the-art MRP enterprise software JobBOSS  from ECI.  JobBOSS Shop Management is a single integrated shop floor control solution that offers complete visibility, access, and job control.  It provides the job tracking tools to keep your shop efficient, productive and profitable today, while positioning you to capitalize on tomorrow.


Our machine tool programming system uses state-of-the-art ESPRIT 3D CAM software and a sophisticated DNC network. Our CAM software is capable of directly importing IGES, STEP, and many native 3D CAD file formats into our CNC programming environment. ESPRIT Post Processing supports all our our CNC machines from 6 axis Swiss Screw machines to 3 and 4 axis horizontal and vertical machining centers.

Outside Services

  • Anodizing, Chrome, Zinc and other Plating
  • Black Oxide
  • Gear Cutting
  • Heat Treating
  • Jewett Machine has developed sources for related machining services which we do not provide in-house. Through these sources we are able to offer the following services as an integral part of a job:
    –  Precision EDM Wire Cutting
    –  Sheetmetal Fabrication

Part of a complex actuator assembly used to open a toolbox door. This actuator will be shipped, via the space shuttle to the international space station on the next mission. Operations include: Turning, 4-axis milling and cylindrical grinding.

Close tolerance cylindrically ground shaft.

Cylindrically ground hollow shaft for power transmission product.