CNC Punching Services
Get custom sheet metal punching parts from a 40 years manufacturerer in China. Our Turret punching with 45-tool capacity delivers intricate hole patterns, formed features, and perforations—faster and more cost-effectively than laser cutting for medium-to-high volume production.
Leading companies we support
What is CNC Punching?
CNC punching is a high-speed metal fabrication process that uses a turret press equipped with multiple tool stations to create holes, cutouts, and formed features in sheet metal. Unlike laser cutting which vaporizes material along a continuous path, punching removes material in discrete strikes, creating clean, burr-minimized holes at exceptional speeds.
“Beyond cutting holes, turret punches perform forming operations—creating louvers, lances, embossments, countersinks, and knockouts directly in the punching cycle.”
Our CNC Punching Capabilities
Advanced CNC turret presses configured for both prototype flexibility and high-volume production efficiency. With automated material handling and extensive tooling libraries, we deliver consistent quality from 50 pieces to 500,000+ annually.
| Machine Specifications | |
|---|---|
|
Equipment |
HPI-3048 CNC Turret |
|
Tonnage |
30 tons max |
|
Tool Stations |
45 with auto-index |
|
Max Sheet Size |
1250 × 2500mm |
|
Thickness Range |
0.5mm – 6.0mm |
|
Position Accuracy |
±0.10mm |
| Production Capacity | |
|---|---|
|
Daily Output |
480,000 hits |
|
Annual Capacity |
150M+ features |
|
Production Lead Time |
5-10 business days |
|
Prototype Turnaround |
3-5 business days
|
|
Lot Sizes |
50 to 500,000+ |
Feature Types We Punch
Materials Compatible with CNC Punching
Our turret punches process a comprehensive range of sheet metals with different grade and thickness.
| Material | Thickness | Grade | Best for |
|---|---|---|---|
|
Cold Rolled Steel |
0.5mm – 4.0mm |
SPCC, DC01-DC06 |
Enclosures, brackets, chassis. Clean punch edges for powder coating. |
|
Galvanized Steel |
0.5mm – 3.0mm |
SGCC, DX51D, G90 |
HVAC components, outdoor enclosures. Maintains zinc coating integrity. |
|
Stainless Steel |
0.5mm – 3.0mm |
SUS304, SUS316 |
Food equipment, medical devices. Specialized tooling for clean edges. |
|
Aluminum |
0.8mm – 4.0mm |
5052, 6061, 3003 |
Lightweight enclosures, heat sinks. Burr-free edges for anodizing. |
|
Hot Rolled Steel |
1.5mm – 6.0mm |
SPHC, SS400, Q235 |
Structural brackets, heavy-duty enclosures. Descaled material recommended. |
|
Pre-Painted Steel |
0.5mm – 1.5mm |
PPGI, PVC-coated |
Appliance panels, decorative components. Film-protected tooling. |
Get Your Quote Now
Send us your requirements and we’ll respond within 24 hours with pricing, lead time, and DFM feedback.
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Why Choose ZAK
500+ global leading companies trust us to deliver their parts on time with quality guaranteed, every time. Here’s why.
Integrated Manufacturing
Laser cutting, bending, welding, finishing, assembly—all in-house. One PO, one quality contact, one delivery.
Engineering-First Approach
12 engineers (avg 11 years experience) review every project. Free DFM analysis catches problems early.
ISO & IATF Certified
We meet quality standards required by Honda, Toyota, VW. This discipline applies to every part we make.
40 Years expertise, Still Growing
Since 1985, grown to 66,000 sqm and 299 employees. We'll be here when you need us.
From Quote Request to Delivery
Accurate quotes within 48 hours and finished parts on schedule. Here's how we work together.
Submit Design
Upload CAD files with requirements
Receive Quote
Detailed pricing within 24-48 hours
DFM Review
Engineering feedback for manufacturability
Approve & Start
Confirm specs and begin production
Production
CNC punching with quality checks
Ship & Deliver
On-time with documentation
Industries We Serve
Electrical Enclosures
Server rack panels, EMI/RFI shielding, cable management systems, junction boxes.
Automotive & Mobility
Seat frame components, B-pillar reinforcements, battery enclosures.
Appliance Manufacturing
Washer drums, oven cavities, refrigerator frames, control panels.
HVAC & Climate Control
Air conditioner housings, condenser brackets, fan guards, ventilation panels.
Design Tips for Better Punched Parts
Follow these guidelines to optimize your designs for CNC punching. Proper DFM reduces tooling costs, improves quality, and shortens lead times.
⭕ Minimum Hole Diameter
Hole diameter should be at least equal to material thickness. Smaller holes risk punch breakage and require specialized tooling.
↔️ Hole-to-Hole Spacing
Maintain minimum 2× material thickness between holes to prevent distortion and ensure structural integrity.
📏 Hole-to-Edge Distance
Keep holes at least 1.5× material thickness from edges. Closer positioning causes edge deformation.
⚠️ Avoid Common Mistake
Don't design holes closer than 3mm to a bend line. Material stretching during bending will distort hole shape and position.
Standard Punching Tolerances
| Feature Type | Standard Tolerance | Precision Tolerance | Notes |
|---|---|---|---|
| Hole Position (same surface) | ±0.13mm | ±0.05mm | Equipment capability |
| Hole-to-Hole | ±0.15mm | ±0.10mm | Cumulative factors |
| Hole-to-Edge | ±0.20mm | ±0.10mm | — |
| Hole Diameter | ±0.10mm | ±0.05mm | Tooling dependent |
| Feature-to-Bend | ±0.25mm | ±0.15mm | Material stretching |
Punching vs. Laser Cutting: Which Process Fits Your Project?
Both CNC punching and laser cutting create precise holes and cutouts in sheet metal, but each process excels in different applications. Understanding when to specify punching helps you optimize both cost and quality.
| Factor | CNC Punching | Laser Cutting |
|---|---|---|
| Setup Cost | Moderate (tooling selection) | Low (programming only) |
| Per-Feature Cost | Very low at volume | Consistent regardless of volume |
| Formed Features | ✓ Yes—integrated | ✗ Requires secondary ops |
| Ideal Volume | 100-500,000+ pieces | 1-500 pieces |
| Speed (holes) | 300-600 hits/minute | 10-30 holes/minute |
| Edge Quality | Clean, slight rollover | Heat-affected zone possible |
| Complex Contours | Limited | Excellent |
| Max Thickness | 6mm typical | 25mm+ |
⚡ Choose Punching When:
- Your part requires 20+ holes or features
- You need formed features (louvers, countersinks, embossments) integrated with cutting
- Production volumes exceed 100 pieces
- Material thickness is under 4mm
- Cost-per-part is a primary consideration for recurring orders
🔆 Choose Laser Cutting When:
- Parts have complex contours or artistic profiles
- You need intricate interior cutouts with tight corner radii
- Material thickness exceeds 6mm
- Volumes are very low (under 20 pieces)
- Edge quality for visible surfaces is critical
The Bottom Line on Cost
For parts with numerous holes and forming requirements, punching typically reduces per-part costs by 30-50% compared to laser cutting plus secondary forming operations. Our engineering team analyzes every project to recommend the optimal process—or combination of processes—for your specific requirements.
Complete Your Project
Ready to Get Started?
Whether you’re evaluating punching for a new product or looking to reduce costs on existing parts, our engineering team is ready to help.