Description

DuoMac-421 / 431 – Wire & Coil Binding Machine

The DuoMac-421 / 431 Wire & Coil Binding system are powerful all-in-one wire and coil binding machines designed for offices, schools, print shops, and professional document finishing environments. These versatile systems combine wire punching and closing with spiral coil punching in a single compact unit — eliminating the need for multiple machines.

Model Configurations

• DuoMac-421: 2:1 Pitch Wire + 4:1 Round Hole Coil

• DuoMac-431: 3:1 Pitch Wire + 4:1 Round Hole Coil

Both models deliver reliable performance with professional results.

Dual Binding Capability

The DuoMac-421 / 431 wire & Coil binding machines:

• Punch and close 2:1 or 3:1 pitch twin loop wire

• Punch 4:1 pitch spiral coil (round holes)

• Punch up to 20 sheets of 20 lb paper per lift

• Provide a 14″ punching width with open sides for oversized documents

All wire punching pins are fully disengageable, allowing precise control and preventing partial side-end perforation when working with custom document sizes.

Heavy-Duty Construction

• All-metal construction

• Closing capacity from 3/16″ to 1-1/4″

• Smooth wire closing mechanism

• Durable coil punching system

• 1-Year Manufacturer Warranty

Whether producing reports, manuals, calendars, or presentations, the DuoMac-421 and DuoMac-431 binding machines provide dependable, professional binding flexibility in one efficient system.

✅ Technical Specifications

Technical Specifications

• Wire Pitch: 2:1 (421) or 3:1 (431)

• Coil Pitch: 4:1 Round Hole

• Punch Capacity: 20 sheets (20 lb paper)

• Punch Width: 14″ with open sides

• Closing Capacity: 3/16″ – 1-1/4″

• Construction: All metal

• Disengageable Pins: Yes

• Warranty: 1 Year

DuoMac-Manual PDF

✅ Item Specifications