In-House Capability
CNC Machining
CNC Machining is an essential process for building a variety of complex parts and assemblies.
Request a QuoteOverview
What we do, who we do it for
At SPM, we are experts in precision-tolerance CNC machining and turning of small to medium-size parts. From our fully automated CNC machining equipment to our tool room mills and lathes, we are capable of meeting all your machining needs. Our experienced machining department can produce high-complexity parts and assemblies including bearings, housings, pins, bushings, blocks, custom nuts, bolts, screws, and other special products.
We can work with a range of different materials, including aluminum, steel, and stainless steel, as well as a variety of different alloys and plastics. In addition to our Value-Added Services, we also offer pre-production prototyping and support for high-volume production runs.
Equipment & Process
Precision machining at scale
Equipment
Our machining floor combines fully automated CNC equipment with tool-room mills and lathes. Mori-Seiki CNC lathes with bar feeders enable continuous turning of small to medium-size parts; Haas CNC vertical machining centers handle complex multi-axis milling. The OB7 cobot extends our lights-out runtime on selected lines, reducing labor cost on long production runs.
Precision tolerances
SPM specializes in precision-tolerance work. Standard turning holds ±0.001″; lathe with bar feeder holds ±0.0005″ on small parts. Mill standard tolerance is ±0.001″ across most operations, with tighter holds available on request. All parts pass through ISO 9001 process controls before shipment.
Specifications
Capability matrix
Quick-scan parameters for CNC projects. Contact us for project-specific tolerances and material capabilities beyond these ranges.
| Parameter | Range | Notes |
|---|---|---|
| Materials | Aluminum, steel, stainless steel, alloys, plastics | Specialty alloys on request |
| Part size | Small to medium-size | Bed capacity TBD verify with SPM |
| Standard tolerances | ±0.001″ | Lathes; mills slightly looser |
| Bar feed precision | ±0.0005″ | Mori-Seiki lathe with bar feeder |
| Axis capability | 3-axis to 5-axis | OB7 cobot enables lights-out |
| Surface finish | Ra 32 µin | Tighter on request |
| Certifications | ISO 9001 | Certified company-wide |
Equipment Spotlight
On the machining floor
Milling
Haas VF-4SS Vertical Machining Center
Multi-axis precision machining. ATC + integrated coolant for lights-out operation.
Turning
Mori-Seiki CNC Lathe
Bar feeder enables continuous turn-and-cut on small to medium-size parts. Sub-micron tolerances on production runs.
Industries We Serve
Where SPM’s machined parts land
Industrial Automation
Cobot enclosures, robot bases, and integrator cell components.
Learn more →Electrical & Electronics
NEMA enclosures and populated panels with passive devices in-house.
Learn more →Oil, Gas & Energy
Field equipment skids, control panels, and rugged enclosures.
Learn more →Aerospace & Defense
Ground support, test fixtures, and non-flight-critical assemblies.
Learn more →Transportation
Rail, transit, and fleet aftermarket fabrications.
Learn more →Test Systems & Equipment
Fixtures, frames, and enclosures for bench and production test.
Learn more →Related Capabilities
Pairs well with
Precision Sheet Metal Fabrication
Our punching, forming, and laser cutting departments deliver quality-assured parts with lights-out automation capabilities.
Explore →Welding
Our certified welding department has MIG, TIG, and robotic welding capabilities.
Explore →Value-Added Services
We offer a variety of valuable services, from design assistance to shipping and logistics.
Explore →FAQ
Frequently asked
What materials does SPM machine?
What tolerances does SPM hold on CNC machining?
Does SPM offer lights-out CNC machining?
What CNC equipment does SPM run?
What does ISO 9001 mean for SPM's CNC work?
Have a project to quote?
Send us your specs. We’ll respond within one business day.