Duct Collar Making Machine
Last updated: October 14, 2026
Specialized machine for forming duct collars (take-offs) for branch connections in spiral duct. Produce your own starting collars in-house instead of buying them pre-made — at a fraction of the cost.
Technical Specifications
What is a Duct Collar Making Machine?
A duct collar maker forms the round starting collar (take-off) that joins a branch duct to a spiral main. The collar is rolled from flat sheet into a cone-to-cylinder profile that seats against the main duct wall. Fabricators who make their own collars cut the cost of every branch connection and stop waiting on supplier lead times.
Key Features
- Forms round starting collars and take-offs for spiral duct branch connections
- Collar diameter range 80-400 mm covers standard branch sizes
- Quick size changeover between collar diameters
- High production rate — collars come off faster than a hand folder can match
- Compact machine, 1.1 kW motor, CE certified, 2-year warranty
Buying Pre-Made Collars and Waiting on Supplier Lead Times?
Every branch connection in a spiral system needs a starting collar — and buying them pre-made means paying a markup on every one, plus lead times that stall your install schedule.
The CD-14 forms collars in-house from your own sheet: 80-400mm diameters, quick changeover, at a production rate that keeps up with your duct line.
How It Transforms Your Production Line
The Duct Collar Making Machine works on a proven principle — here is the step-by-step workflow that makes it possible:
Blank Cut
A flat collar blank is cut to the developed size for the branch diameter.
Forming
The blank is fed through the forming rollers, which roll the cone-to-cylinder collar profile in one pass.
Size Changeover
Roller settings adjust between 80 and 400mm diameters — quick changeover keeps small batches economical.
Collar Out
Finished collars discharge ready for seaming or welding to the branch and main duct.
Technical Specifications & Performance Data
Every specification on this machine is chosen for a reason. The table below shows not just the numbers, but what each one means for your daily production:
| Parameter | This Machine | What It Means for You |
|---|---|---|
| Control System | Mechanical roller drive | Consistent, repeatable operation with minimal operator training |
| Construction | Heavy-duty steel frame | Vibration-free operation, 10+ year service life |
| Certification | CE certified | Meets European safety and quality standards |
| Warranty | 2 years | Peace of mind with comprehensive factory warranty |
Problems Solved: Before vs. After
We asked HVAC fabricators about their biggest production headaches. Here is how this machine directly addresses each one:
| Without This Machine | With This Machine |
|---|---|
|
✕ Bought-in collars
Markup on every branch connection, supplier lead times |
✓ In-house forming
Collars from your own sheet at a fraction of the cost |
|
✕ Limited sizes in stock
Odd branch sizes mean special orders and delays |
✓ 80-400mm range
Standard branch diameters formed on demand |
|
✕ Slow hand forming
Hand-rolled collars vary in profile and fit |
✓ Roller-formed profile
Consistent collar geometry, ready to seam |
|
✕ Storage of bought parts
Pre-made collars tie up space and cash |
✓ Make-to-order
No collar inventory — form what the job needs |
Where It Fits in Your Factory
This machine is versatile enough to serve multiple production scenarios. Here are the most common configurations our customers use:
Spiral Duct Fabricators
Form the starting collars for every branch off your own spiral line — the natural companion to a spiral tubeformer.
Duct Installation Contractors
Make collars on-site or in the shop for the exact branch sizes each job needs, with no supplier wait.
OEM Duct Manufacturers
Add collar forming to your fitting production and cut the bought-in cost of every branch connection.
Cost-Focused Shops
The machine pays back on collar savings alone — material is your own offcut sheet.
Frequently Asked Questions
Click each question to see the answer. These are the questions our sales engineers hear most often:
Professional Packaging & Global Shipping
Every machine is professionally packaged and secured in a container for safe delivery to your port. We send you loading photos before the ship sails.
Calculate Your Return on Investment
Based on average industry data, here is what a typical customer saves after installing this machine:
* Figures based on average customer data for a shop producing 100-500 bends per day. Your actual results will vary based on production volume, labor rates, and current efficiency levels. Contact our engineers for a customized ROI calculation based on your specific operation.
Ready to Upgrade Your Electric Production?
Get a customized quote within 24 hours. Our engineers will help you configure the right machine for your specific production requirements.
WhatsApp / WeChat: +86-18355321923 | Email: jason@predamachine.com
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Buying Guides for This Machine Type
Before you request a quote: how this machine class compares, what it costs, and how to size it for your production volume.
Round Duct Fittings Guide
Collar types, take-off methods and fitting geometry for round duct systems — what to form and what to buy.
Read the guide → Buying GuideSpiral Duct Machine Buying Guide
Matching a tubeformer to your diameter range, gauge and throughput — with the fitting tools that go with it.
Read the guide → GuideOval Duct Manufacturing Guide
Flat oval production from tubeformer to ovalizer — including branch and collar practice.
Read the guide →