---
title: "Precision CNC Machining Services | Kelley Engineering"
canonicalUrl: "https://kelley-eng.com/capabilities/precision-cnc-machining-services/"
excerpt: "Precision CNC Machining Services Engineered for complex geometries, tight tolerances, and large envelope components. We deliver precision parts that keep your assembly lines moving. Upload CAD for Quote Our Machining Approach Built for the Complex & the Heavy At Kelley Engineering, CNC machining is more than a standalone service—it’s a core part of our integrated […]"
metaDescription: "High-precision CNC machining services in Upstate SC. Specializing in 3, 4, and 5-axis milling, turning, and large envelope machining. Upload CAD for a quote."
datePublished: "2026-04-01T12:18:35-05:00"
dateModified: "2026-07-06T08:27:40-05:00"
---

Precision CNC Machining Services | Kelley Engineering

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[Home](https://kelley-eng.com/) » [Capabilities](https://kelley-eng.com/capabilities/) » CNC Machining

# Precision CNC Machining Services**

Engineered for complex geometries, tight tolerances, and large envelope components. We deliver precision parts that keep your assembly lines moving.

[Upload CAD for Quote](#)

Our Machining Approach

## Built for the Complex & the Heavy

At Kelley Engineering, CNC machining is more than a standalone service—it’s a core part of our integrated manufacturing capabilities. We produce precision components for customers across a wide range of industries, combining advanced machining with rigorous quality standards and the capacity to handle everything from small, high-volume parts to large, complex assemblies.

Whether you need prototype quantities, production runs, or large machined weldments, our experienced team delivers the accuracy, consistency, and reliability your project demands.

### Tight Tolerances
Consistently holding tolerances up to +/- .0005″ on complex features.

### Large Envelopes
High-capacity bed sizes to accommodate massive structural components.

### AS9100 & ISO 9001:2015
Rigorous CMM inspection and quality documentation for every batch.

### Turnkey Ready
Machined parts feed directly into our welding and assembly departments.

## Technical Specifications & Capabilities

Detailed parameters for your engineering and purchasing teams.

Core Processes

- 3, 4, and 5-Axis CNC Milling
- CNC Turning with Live Tooling
- Large Envelope & Vertical Machining
- Prototyping & First Article Inspection
- High-Volume Production Runs

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Materials Worked

- Aluminum (6061, 7075, etc.)
- Stainless Steel (304, 316, 17-4)
- Carbon & Alloy Steels
- Brass & Copper
- Engineered Plastics (Delrin, PEEK)
- Exotic Alloys (Inconel, Titanium)

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Secondary Ops

- In-house Hardware Insertion
- Grinding & Surface Finishing
- Sub-assembly & Kitting
- Heat Treating (via trusted partners)
- Plating & Anodizing (via trusted partners)

### Powered by Advanced Machining Centers
Our shop floor features modern, high-performance equipment including Haas and Mazak multi-axis centers to ensure maximum uptime and precision for your parts.

[View Full Equipment List](https://kelley-eng.com/capabilities/equipment-list/)

Our Work

## Technical Specifications & Capabilities

Detailed parameters for your engineering and purchasing teams.

**5-Axis Aluminum Housing****Aerospace Component

Large Envelope Steel Frame****Industrial Manufacturing

Precision Turned Shafts**
High-Volume Automotive Run

## Have a precision
machining project?

Upload your STEP, IGES, or DXF files today. Our engineering team provides fast, accurate quotes.

[Upload CAD File](https://kelley-eng.com/contact-us/)