CNC Turning Services

Precision CNC Turning • Prototype to Production • Made in the USA

At 425 Manufacturing, we provide precision CNC turning services for customers who need reliable, American-made machining. Our CNC lathe department supports single-part prototypes, short-run jobs, and mid-scale production, machining everything from small precision components to large-diameter turned parts. With our Haas SL-40 Big Bore—one of the largest full-capacity CNC lathes in the Rockford area—we are equipped to handle heavy-duty machining with excellent accuracy and repeatability.

CNC Turning Capabilities

Core Turning Operations	Advanced Capabilities
CNC turning & facing	4th-axis indexing
Precision boring	Cross-holes & bolt patterns
Internal & external threading	Keyways & splines
Grooves & undercuts	Angles & tapers
Complex turned profiles	Prototype → production

CNC Lathe Equipment

Small & Medium Turning	Large-Diameter Turning
Haas ST-10 • 6″ chuck • X travel: 7.9″ • Z travel: 16″ • 1.75″ bar capacity • Tailstock Haas SL-30 (2 machines) • 12″ chucks • X travel: 11.3″ • Z travel: 34″ • 3.0″ bar capacity • Tailstocks	Haas ST-40 Big Bore • 18″ chuck • X travel: 20″ • Z travel: 44″ • 6.5″ bar capacity • Tailstock

Materials We Machine

Plastics & Composites	Metals & Alloys
ABS	Aluminum
Acrylic	Copper
Delrin (Acetal)	Brass
FR4 / Garolite G10	Bronze
HDPE	Magnesium
UHMW-PE	Zinc
Nylon	Carbon steel
Polycarbonate	Steel alloys
PEEK	4140 Annealed
Polypropylene	4140 Pre-Hard
PTFE (Teflon)	A2, D2, M2, H13
PVC	303, 304, 440 Stainless
Noryl	Titanium & Inconel

CNC Turning Tolerances & Finishing

Tolerances	Finishing Options
Standard CNC turning: ±0.002″	Chrome plating
Precision grinding: ±0.0005″	Anodizing
Tighter tolerances available	Zinc plating
Based on material & geometry	Black oxide & more

CAD Design & Secondary Machining

Design & Engineering	Secondary Machining
Full CAD design using SolidWorks	6 Haas CNC vertical mills
Design for Manufacturability (DFM)	2 Haas CNC horizontal mills
Reverse engineering	Milling after turning
Concept-to-part support	Drilling & tapping
Print-to-part production	Complete machining in-house

Why Haas CNC Equipment?

Haas Advantage	Customer Benefit
12 Haas CNC machines in-house	Consistent part quality
Haas machines made in the USA	Faster lead times
High rigidity & accuracy	Superior surface finish
Proven reliability	Repeatable production

Prototype to Production CNC Turning

Prototype & Short-Run	Production Machining
Single-part prototypes	Short-run production
Engineering samples	Mid-scale manufacturing
First-article parts	Repeat CNC turning
Fast turnaround	Scalable capacity

CNC Turning – Frequently Asked Questions

Question	Answer
What tolerances can you hold?	Standard tolerances are ±0.002″. With grinding, ±0.0005″ is achievable depending on material and geometry.
Do you offer prototype CNC turning?	Yes. We support single-part prototypes, engineering samples, and first-article production.
What materials can you machine?	Plastics, composites, aluminum, steel, stainless, tool steels, titanium, Inconel, and specialty alloys.
What size parts can you turn?	Up to 30″ diameter with large-diameter chuck work and bar capacities up to 3.0″.
Do you offer secondary machining?	Yes. Milling, drilling, and tapping are completed in-house after turning.

CNC Turning Services in Rockford, Illinois

Local Machining	Service Area
CNC turning performed in Rockford, IL	Northern Illinois
All machining done in-house	Southern Wisconsin
American-made Haas equipment	Midwest & nationwide
No outsourcing	Fast local response

If you’re searching for CNC turning near Rockford, Illinois, precision CNC lathe machining, or Made-in-USA CNC turning services, 425 Manufacturing is ready to help.

CNC Turning You Can Trust

What We Deliver	Why It Matters
Precision CNC turning	Tight tolerances
American-made machining	Reliable quality
Complete in-house capability	Shorter lead times
Prototype → production	One trusted supplier