Single diameter components in small to mid size runs are offered very competitively by utilizing the thrufeed grinding method, whereby the part is ground while continuously traveling through the grinding and regulating wheels, automatically exiting the work zone. Multiple diameter parts can also benefit if the ground surface is the largest diameter and comprises most of the overall length. Alternatively, thrufeed grinding may be paired with infeed grinding or other grinding methods to obtain final specifications.
During infeed grinding, the part is held between the wheels at a constant axial location, considering multiple diameters, radii, tapers, steps, and/or faces are being ground simultaneously to ensure their geometric relationships. This process may also be referred to as crush form grinding, since the grinding wheel is dressed by having to-be-ground features crushed, or formed, into it.
CapabilitiesLength: to 20", approx.
Diameter, OD: to 8", approx.
Tolerance: +/- 0.0001"
Finish: 4µ Ra
FeaturesGrooves, Flats, Slots
MaterialsSteels, plated, hardened Aluminim
Brass & Bronze
Tungsten Carbide & Titanium Hastalloy & Inconel
Contactors & Electrodes
Shafts & Shelves
Profile can help you increase the value and function of round commodity parts- such as off-the-shelf dowel pins, by centerless grinding custom flats and slots. Or, turn commodity fasteners- like bolts, into your specialty fasteners, by reducing their shanks for clearance or incorporating shear pin features.
We've also produced centerless ground forms some said weren't possible, like a very small engine valve, and excel at efficiently thrufeed grinding tungsten parts and grinding forms into tungsten blanks. Contact us today to discover how centerless grinding may work for you!
Centerless Grinding Cobalt Chromium Medical Hinge Pin
Centerless Grinding Equipment List
2 Cincinnati Cinco 15, NC controlled
3 #2 Cincinnati AE
1 Cincinnati OM Infeed/Thrufeed, NC controlled
2 #2 OM Cincinnati w/ Pneumatic Infeed
1 #3 Cincinnati Infeed
1 #3 Cincinnati Thrufeed
1 Royalmaster Thrufeed
1 Cincinnati Cinco 15 Infeed, NC controlled w/ CNC diamond
dresser (multi-step CNC cylindrical profile grinding of
diameters, angles, and length)
Diameters of this self-propel lawnmower shaft infeed ground within +/- 0.001" and within 0.00025" for roundness.
ODs of motor valve stems and specialty fasteners centerless ground, and at top, the OD and slot of a dowel pin.
Profile has mastered centerless grinding forms into tungsten carbide
18 - 20mm long dental burs of hardened steel centerless ground to obtain precision diameters. The opposing ends will undergo diamond coating before use.