Custom Production Grinding, Inc.
Family Owned and Operated! 
Our Family is dedicated to quality, reliability, and service!

Manual/Universal OD Grinding


CPG has the capability for manual OD grinding. We have 8 machines in production use. Our machines are able to grind up to 20’’ diameters by 96’’ long.

ID Grinding/ID Honing


At CPG we also have the capability for ID grinding and ID Honing. Our ID grinding capabilities go up to 16’’ diameter by 8’’ long. We are able to hold tolerances as tight as 0.0002’’ and get down to an 8Ra finish. We have two machines in production use for ID Grinding.

Our honing capabilities range from as small as 0.050’’ diameter up to 3.750’’ diameter. We again are able to hold tolerances of 0.0002’’ and can get down to a 4Ra finish on our machines. We have 2 Sunnen EC-3500 automatic honing centers and 6 Sunnen 1800 & 1804 automatic sizing power strokers.

Blanchard/Double Disk/Surface Grinding


Here at CPG we also do flat grinding. We have the capability to blanchard grind, double disk grind, as well as surface grind. We have a 30’’ table on our blanchard grinder which allows us to grind larger plates. Our double disk grinder is great for high production runs on parts such as washers and other similar parts. Then we also have a 16’’x32’’ surface grinder for smaller parts, smaller prototype runs or smaller orders.

Centerless Thru-Feed/Infeed

At CPG we have the capability to centerless thru-feed as well as centerless in-feed grind. Centerless grinding is a process that requires a grinding wheel, a regulating wheel, and a work rest blade.

Thru-Feed grinding is a process where the work piece is fed through the machine completely, entering on one side and exiting on the other side. Whereas In-Feed grinding the parts rests on the work rest blade and the regulating wheel comes in and applies pressure to the grinding wheel in order to remove stock. Each piece in an in-feed grinding process has to be manually loaded into the machine.

Capabilities


CNC OD Grinding


CPG’s CNC OD grinding capabilities allow us to profile dress the grinding wheel to grind multiple diameters at one time, as well as to profile dress the wheel to grind spheres and angles.


We have the capability to grind diameters up to 10’’ by 40’’ long between centers. Currently we have 14 Mitsubishi CNC grinders, both straight and angle heads, in production use. We pride ourselves in being able to hold the tight tolerances that most of our competitors cannot.

We are able to make special tooling in order to grind difficult parts such as crankshafts as well as other eccentric parts. At CPG we provide prototype runs as well as high production runs.

It all starts with a call   262-783-5770