CNC ID/OD Grinding
PGI specializes in CNC grinding, a precision-machining process that delivers exceptional accuracy and surface finishes on a variety of metals. Our advanced, computer-controlled grinding technology ensures tight tolerances and consistency, making it ideal for aerospace, automotive, medical, and other high-performance industries.
Whether for complex shapes or small to medium production runs, PGI’s CNC grinding services provide the precision and reliability you need, with the capability to handle larger volume jobs as required.
Example CNC Ground Parts
An industrial needle with a precision ground tip. The needle is swiss machined, heat treated, then finished in our CNC Grinding department. The ground tip is held to a .001” tolerance with an 8 Ra finish.
This needle is made from 52100 bearing steel then heat treated. It is then centerless ground on two OD’s before having the precision tip ground. After grinding, parts are 100% inspected using a vacuum tester per customer specifications. Custom workholding that was designed and built in house is used to fixture the needle for grinding.
This industrial needle has multiple operations before being chrome plated and ground to final size. Afterwards, we swage the piston assembly on to the needle then package it in custom packaging.
After swiss turning both parts of this poppet assembly, the two pieces are joined together using a high strength adhesive. This allows the smaller steel pin to be heat treated for strength while making the outer part from stainless steel for corrosion resistance. After assembly, both the stainless OD and steel tip are precision ground due to the tight length and finish requirements. The assembled part is less than ½” in length.
Specifications
- Length: to 20”, approx.
- Diameter, ID: 0.50 – 4.0”
- Diameter, OD: to 6”
- Tolerance: +/- 0.0001”
- Finish: 8 Ra
Materials
- Steels (all types)
- Aluminum
- Brass
- Bronze
- Titanium
- Hastalloy
- Inconel
- Powdered Metals
- Plastics
Equipment List
- 1 Mitsubishi RD23 OD Grinder – 4” OD and 10” length capacity
- 3 Supertec G25P-50 OD Grinder – 6” x 18” table
- 1 Toyoda GL4i-50 Switch OD Grinder – 6” OD and 18” length capacity
- 4 Okamoto IGM-NC15 ID/OD Grinders – 4” diameter and 6” length capacity
- 1 Okamoto 12-24 DX Surface Grinder with 12” x 18” magnetic table
Design for Manufacturability
Our experienced engineers can work with you to optimize your part designs for efficient production, minimizing costs and lead times. Contact us to see if your part can be optimized for manufacturability.
Quality Documentation
Comprehensive quality documentation we provide upon request:
Let's Talk
Whether you’re curious about our capabilities, looking for career opportunities, or just want to chat about the components you need manufactured, we want to hear from you. Reach out today and let’s start the conversation.