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Mühlen EB-20

Electric Spiral Binding Machine

Automatic Motor Technology

Powered by an electric motor system, the MÜHLEN EB-20 can punch 20–25 sheets at once depending on paper thickness. With a binding system that easily handles up to 400 sheets, it is one of the most preferred models in its class. Designed for heavy-duty use, the EB-20 binding machine can comfortably handle thick binding jobs.

3 Operations in One Machine

Built with German engineering, this model's advanced system allows punching, binding and finishing to be carried out easily and quickly on a single machine. Featuring the most popular binding style, it is specially manufactured for plastic spiral coils.

Easy Binding Capability

Thanks to operating levers that give the user a choice, the machine can optionally switch to a different working mode. With the binding-material release lever on the model, documents that have already been punched can be bound quickly and in a single pass.

Electric System

Operating on a fully electric system, the MÜHLEN EB-20 binding machine uses its electric motor — activated via the included foot pedal or the green button on the machine — to punch documents placed in the tray quickly, evenly and with 21 holes measuring 3×8 mm. Thanks to the electric motor, the user needs no physical effort to punch documents.

400-Sheet Binding Capacity

Our model performs automatic punching and binding of 10 to 400 sheets in a single pass, quickly and easily. Its specially developed binding lever holds the previously punched sheets in place and binds them together once the process is complete. With components that require no extra maintenance or lubrication, it always operates at the same high performance as on day one.

Free Pin System

The most important feature that sets the EB-20 apart from other machines is its "free pin" system. On the MÜHLEN EB-20, the user can choose not to punch the corners of documents and can adjust the spacing of the 21 holes as desired. This prevents the unsightly appearance of half-holes at the corners and edges, resulting in a neater, more elegant binding.

Margin Adjustment and Waste Bin

Featuring an advanced margin adjustment, the model has a 3-stage margin system that controls how far in or out the document holes are punched. The user can punch documents at 3, 5 or 7 mm margins as desired. In addition, paper waste generated during punching collects in the waste bin, making it easy to empty.

Technical Specifications

  • Punches documents using an electric motor system
  • Punches a maximum of 20–25 sheets at once
  • Free pin system allows punching at the desired spacing
  • Punches 21 holes measuring 3×8 mm
  • Binds up to a maximum of 400 sheets
  • 3-stage margin adjustment with 3 different edge spacings
  • Punches using the foot pedal or motor button
  • Left-side document clamp for even, proportional binding
  • Easily binds up to 400 sheets in a single pass
  • Can also bind manually using the hand lever
  • Specially manufactured for plastic spiral binding
  • Removable waste bin compartment
  • 5-year warranty on the punching blades
  • 24-month warranty

Advantages

  • Electric motor punching
  • Punches 20–25 sheets at once
  • Binds up to 400 sheets
  • 3×8 mm hole size
  • 21-hole free pin system

Physical Properties

  • Packaging box size: 425×320×245 mm
  • Machine size: 435×275×200 mm
  • Number of pins: 21 (free)
  • Gross weight: 12 kg
  • Net weight: 10.5 kg

Mühlen EB-20 — Electric Spiral Binding Machine with Free Pin System

Who Is It For?

The Mühlen EB-20 electric spiral binding machine is made for offices, print shops, stationery and copy centres and documentation teams that bind reports, presentations, catalogues and theses every day. Punching is done by an electric motor, started either with the included foot pedal or the green button on the machine, so the operator needs no physical effort and both hands stay free to align the stack. It is designed for heavy-duty use and specially manufactured for plastic spiral coils.

Key Features and What They Do

  • Electric punching: punches 20–25 sheets at once, depending on paper thickness, with 21 holes measuring 3×8 mm.
  • Free pin system: the 21 pins can be disengaged individually, so corners are left unpunched and hole spacing is set as required, avoiding half-holes at the edges.
  • Binds up to 400 sheets: the binding lever holds pre-punched sheets and closes documents of 10 to 400 sheets in a single pass; binding is done manually with the hand lever.
  • 3-stage margin adjustment: choose 3, 5 or 7 mm to set how far from the edge the holes are punched.
  • Left-side document clamp: keeps the stack aligned for even, proportional binding.
  • Removable waste bin: paper chips collect in a separate compartment that is simple to empty.

Frequently Asked Questions

How many sheets can the EB-20 punch and bind?
It punches 20–25 sheets per pass and binds documents from 10 up to 400 sheets.

Is the machine fully electric?
Punching is electric, via the foot pedal or the motor button; the binding step itself is completed with the manual lever.

What warranty does the EB-20 have?
The machine carries a 24-month warranty, and the punching blades are covered by a 5-year warranty.

How large and heavy is the machine?
The EB-20 measures 435×275×200 mm and has a net weight of 10.5 kg.

Usage and Care Tips

Stay within the 20–25 sheet punching limit for clean holes and longer blade life. Select the margin that suits your paper size, disengage pins at the corners when needed, and align the stack against the left clamp before punching. Empty the waste bin regularly so chips do not build up. The components need no extra maintenance or lubrication; keeping the machine dust-free and dry is enough.