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A method of grinding cylindrical pieces in which the work piece is supported on the outside diameter and not on centers.
Infeed Grinding applications include:
- Tapers
- Multiple step grinding
- Flats
Round material .015'' to 7.000''
(depending on configuration)
1/8'' to 10.000'' long
(depending on configuration)
(click on images for a larger view)
Example of Infeed Job with taper

Example of Infeed Job with Multi Step
Example of Infeed Job with Flats

(click on images for a larger view)
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Thru-feed grinding is accomplished by passing the work piece between the grinding and regulating wheel.
Length
.200” long up to 20' long(feet)
Diameter
.015” to 7.000” (solid)
up to 9.000 (tubing)
Tolerance can hold up to .0001
We do and have for many years ground bar stock for many of the major steel distributors in the country.


Being in a "I need it yesterday" business, we have come to depend on NRPG's fast turnaround and responsive attitude.
We feel we are dealing with friends who truly want to help.
NRPG has the capacity, the quality and most importantly, the people to get the job done right.
Jim Davison
Empire Metal Supply
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NRPGC carries a large inventory of steel which includes:
303 |
304 |
17-4PH |
440c |
416 annealed |
316 |
12l14
(carbon steel) |
416 treated
(26-32RC) |
We also carry Carbon and Alloy steels.
Our sizes range from .062'' to 1.255".
Please give us a call for your material needs if you do not see it above.

Dowel Pins:
We can manufacture Dowel Pins starting at .031'' to 1.2500"
We can hold as close as .0001 tolerance or better. These pins can be made from a wide variety of Stainless, Alloy, and Carbon steels to the customers specifications.
We can also provide hardened Dowel pins to your heat treat specifications.
Shafting:
Precision Shafting is another important part of our business. We can provide any length and any diameter as per your specifications.
Precision Ground Bar Stock:
12' bars ground to .0001 x 12'
We can provide material if needed.
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