The Hang 107 – 20 is an automatic multi-spindle paper drill — sometimes referred to as a book drill or paper boring machine — designed for punching precise holes through stacks of paper, card, or bound materials. This type of machine is a core tool in print finishing, bookbinding, and document processing operations. Constantin Hang is a German manufacturer with a long-standing reputation for producing paper drilling and punching machinery for the print and bindery industries.
This machine is configured with two drill heads as standard, with the option to expand to four drill heads, making it well suited to multi-hole drilling patterns in a single pass. The drill spindles accept drill diameters from 3 mm up to 14 mm, covering the full range of common hole sizes used in filing and binding applications. The adjustment range between drilling spindles runs from 36 mm to 420 mm, allowing a wide variety of hole-spacing configurations to be set up accurately. A particularly notable feature is the very large working depth of 300 mm, which enables drilling through exceptionally thick paper stacks or tall document piles.
The drill speed is infinitely variable, giving operators precise control to match the speed to the material being drilled. A jog mode is included specifically for machine setup, allowing careful positioning before a production run begins. Clamping of the paper drills is achieved via a quick-clamping system, simplifying tool changes. Depth stops and side stops are fitted as standard, ensuring consistent, repeatable results across a batch. The machine is equipped with a reversing circuit, which aids in withdrawing the drill cleanly from the stack.
Operation is triggered by an electric foot switch, leaving both hands free to handle and position material. The machine runs on a three-phase motor at 380 V. Mobility on site is provided by steerable rollers, allowing the machine to be repositioned on the workshop floor without difficulty. This is a used machine from 1992, located in Germany.
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