Grinding Services

In-house CNC Grinding is a Tri Part distinction. We have 5 different grinding machines that give us the flexibility to provide thru-feed grinding, in-feed grinding, and OD grinding.

Grinding Capabilities

Tri Part has the capability to analyze over 20 surface finish parameters to meet tight tolerance requirements. Typical in-house grinding tolerance can reach .0001” for diameter, .0005” circularity, .0001” straightness, and 0 shaft lead (as per SAE J946).

Grinding Benefits

CNC grinding operations are crucial for producing parts that require extremely precise dimensions and superior surface finishes. The CNC grinding process involves an abrasive wheel that removes material from the workpiece with high accuracy, driven by computer-controlled settings that ensure consistent results. This precision is vital for parts with complex geometries or those made from hard materials that are difficult to machine using other methods. Additionally, CNC grinding minimizes the risk of defects and ensures a high-quality surface finish, which is necessary for components that must fit together perfectly or function reliably under stringent conditions.

Specifications
Diameter
.0001 inch
Roundness
.00005 Circularity
Straightness
.0001 per inch
No Lead
Ref: SAE J946
Finish
RA 2
Size
Up to 6” diameter, & 10” OAL

Materials
Alloy Steel
4140, 8620, E52100
Carbon Steel
12L14, 1215, 1117, 1018, 1045, 1141, 1144
Stainless Steel
303, 304, 316, 416
Other
G2 – Continuous Cast Grey Iron,
Inconel, Stellite, Hastelloy, Titanium