Contract services
CNC Machining (Contract Services)
Precision milling and turning for OEMs, production lines, and contract manufacturing.
SSI provides contract CNC machining services for customers who need a responsive, reliable shop for precision components. This is a dedicated part of our business focused on machining work for other companies—supporting one-offs, short runs, repair/rework, and repeat production. Our approach is practical manufacturing: clear requirements, the right fixturing, and repeatable processes that produce parts that meet print.
Phone: 815.315.0863
Shop and process gallery
At a Glance
- Precision CNC milling and turning
- Short runs and one-off parts (no high minimums)
- Prototype, short-run, and repeat production programs
- Custom fixturing and workholding to support accuracy and repeatability
- All commonly machined industrial materials
Materials
- Aluminum alloys
- Carbon steel
- Stainless steel
- Tool steels
- Plastics (Delrin, UHMW, and other common industrial plastics)
- Other commonly machined materials (by request)
Capabilities
CNC Milling
- Plates, brackets, housings, fixtures, and tooling components
- Profiles, pockets, patterns, and tapped/reamed features
- Multi-part setups using repeatable workholding
CNC Turning
- Shafts, spacers, bushings, sleeves, and threaded components
- Shoulders, grooves, and close-tolerance diameters
- Support for longer parts as required (tailstock/steady methods as needed)
Custom Fixturing & Workholding
- Fixture design/build as required to hold parts securely and repeatably
- Production workholding setups for efficient short-run machining
- Repeat setups for recurring orders and revision-controlled programs
Volume & Program Support
- One-off and emergency parts
- Short-run production (low minimums)
- Prototype development
- Medium production (100–5,000+)
- Ongoing contract manufacturing with repeat jobs and revision control
Whether you need a single critical part or a structured repeat program, SSI scales the process, fixturing, and inspection approach to match the job.
Typical Parts We Machine
- Tooling plates, fixtures, and fixture components
- Mounts, brackets, machine components, and custom hardware
- Housings and structural components
- Turned shafts, spacers, bushings, and threaded parts
- Replacement parts, repair components, and rework support
Quality & Consistency
- Drawing review up front to confirm critical features and tolerances
- Process planning and fixturing that supports repeatability
- In-process inspection with documented checks as required
- First-article and repeat-run consistency for production programs
- Practical manufacturability feedback when a print can be improved for cost or lead time
How It Works
- Review & quote — Send drawings/CAD, material, quantity, and due date. We confirm questions up front.
- Program & fixture — CAM programming, tooling selection, and custom fixturing/workholding as required for consistent parts.
- Machine — CNC milling/turning completed to print requirements.
- Inspect & deliver — Parts are checked and packaged for delivery. Inspection reports are available when required.
Why SSI Machining
- Short-run friendly: built to support one-offs and low-quantity work without overcomplicating the process
- Fixturing capability: custom workholding that improves repeatability and reduces variation
- Clear communication: fast feedback when a drawing needs clarification
- Production mindset: repeatability, revision control, and on-time delivery for ongoing programs
Project Inputs (for quoting)
- CAD model or drawing (STEP/IGES/SolidWorks/PDF)
- Material specification (or request a recommendation)
- Quantity and expected repeat frequency
- Critical tolerances/features
- Finish/coating requirements (if any)
- Delivery date and shipping method
Next Step
Send drawings and basic requirements to sales@ssi-co.com or call 815.315.0863.