Mühlen SD-22B
Professional Spiral Binding Machine
Free PIN System
With its 21 free pin system that lets the user punch documents at the desired spacing, the model offers a much more functional and flexible design thanks to its free "pin" system. This adjustable structure, which can be changed according to the document being bound, allows punching at the desired intervals.
Excellent Appearance and Quality
Thanks to its free pin system, the MÜHLEN SD-22B model eliminates the possibility of half-holes appearing at the corners. The user prevents this by removing the pins at the positions that would fall on the corners. This results in much higher-quality, neater-looking bound documents.
Margin Adjustment and Waste Box
With 3 different margin settings — 3, 5 and 7 mm — the SD-22B model lets the user decide how far from the edge or how close to the corner documents are punched. It also collects the paper scraps produced during punching in a separate compartment, so the user can remove and empty the waste box whenever needed.
Punching 22 Sheets at Once
The Mühlen SD-22B model easily punches up to 22 sheets at a time. Thanks to its lever and long handle, the user can achieve smooth, error-free punching with minimal pressure. In addition, the user can punch anywhere from 1 to 21 holes as needed.
400 Sheet Binding Capacity
Thanks to its long-form combs, the model can bind up to 400 A4-size sheets, completing the process in seconds. The user places the binding material behind the combs and then easily opens and closes it with the help of the lever.
Dual Lever System
The Mühlen SD-22B model has separate lever mechanisms for punching and binding. Since each operation requires a different amount of resistance, the dual lever system lets the user achieve the most efficient binding results with minimal effort.
Strong Body and Mechanical System
Designed for intensive use, the model is built with a durable metal body and a steel internal structure, ensuring years of trouble-free service at like-new performance. Its punching blades, made of special steel and backed by a 5-year warranty, deliver outstanding performance even under the heaviest workloads.
Technical Specifications
- Professional, heavy-duty spiral binding
- Free punching from 1 to 21 holes
- Punches up to 22 sheets at once
- Free pin system for greater flexibility
- Maximum binding capacity: 400 sheets
- Maximum document size: A4 and smaller
- Comfortable use with dual lever system
- Maximum ring size: 51 mm
- 3 margin settings: 3, 5 and 7 mm
- Punch hole size: 3x8 mm
- Non-slip base for documents
- Document stop guide
- Removable waste box
- Strong steel body and components
- 5-year punching blade warranty
- 24-month warranty
Advantages
- Professional design for heavy-duty use
- 21 free pin system
- Punches 22 sheets at once
- Binding capacity of up to 400 sheets
- Binds A4 and smaller documents
- 3 different margin settings
Physical Properties
- Gross dimensions: 485x265x400 mm
- Net dimensions: 450x250x380 mm
- Number of pins: 21 (free)
- Weight: 10.4 kg (net)
- Number of levers: 2
Mühlen SD-22B — Professional Spiral Binding Machine with Dual Lever System
Who Is It For?
The Mühlen SD-22B professional spiral binding machine is built for regular, high-volume binding with plastic combs. Its metal body and steel internal structure suit print shops, stationery and copy centres, accounting offices, engineering and architecture firms, schools and corporate offices that bind throughout the day. It handles both thin and thick presentations, reports, catalogues, theses and project files of A4 size and smaller, punching up to 22 sheets at a time and binding up to 400 sheets.
Key Features and What They Do
- Separate levers for punching and binding: each step needs a different force, so two levers let you work with minimal effort; the long punching handle gives smooth holes with little pressure.
- 21 free pins: punch anywhere from 1 to 21 holes and remove the pins that would fall on the corners, avoiding half-holes.
- Long-form combs: bind up to 400 A4 sheets in seconds, with a maximum ring size of 51 mm.
- 3 margin settings: 3, 5 or 7 mm from the edge, with 3x8 mm punched holes.
- Non-slip base and document stop guide: keep the stack in place for even punching.
- Removable waste box: paper scraps are collected in a separate compartment.
Frequently Asked Questions
What is the difference between the two levers?
One lever is for punching and the other for opening and closing the comb, because each operation requires a different amount of resistance.
What is the maximum comb size?
The SD-22B accepts rings up to 51 mm and binds up to 400 sheets.
What warranty applies to the blades?
The special steel punching blades have a 5-year warranty, and the machine carries a 24-month warranty.
How large is the machine?
Net dimensions are 450x250x380 mm with a net weight of 10.4 kg.
Usage and Care Tips
Before punching, lift the pins at the corner positions and set the margin for your document thickness. Slide the stack against the stop guide so every set lines up. Place the binding material behind the combs, open it with the binding lever, add the pages and close. Empty the waste box when it fills.
