Other Coil Binding Machines

Rhin-O-Tuff HD4170
Rhin-O-Tuff e4100
Rhin-O-Tuff OD4300/OD3500
Renz SPB 360
Renz SPB 360 Comfort
Renz APSI 300
data subject to change without notice
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Spiel Sterling Coilmaster III - Coil Former and Inserter / perfect for use with an electric punch machine

The Sterling Coilmaster III is a complete, in-line, plastic coil binding system. Plastic filament is fed into the Coilmaker from a spool. It forms plastic coil on a mandrel within the Coilmaker. The formed coils are automatically fed into the Coilmaster, which spins the coil into the book from the first hole onwards. The coil is then cut and crimped automatically. One operator can create coil and bind books at speeds up to 700 books per hour at the same time.

The Sterling Coilmaster III is a heavy duty automatic plastic coil inserter designed for high production. This machine binds books from 8 mm in diameter to 32 mm in diameter, and up to 50 mm in diameter with the optional thick book attachment. Bind books as small as 4" X 4" up to calendars 17" long. The machine can also be modified to handle larger books such as art pads.

The Coilmaster III inserter includes a patented spreading device that allows for binding books with head and foot margins of up to 3/16 of an inch (4.7mm). It is possible to choose the size of your margin. No matter what size the book is, the Coilmaster will allow you to center the hole pattern on the sheet. This is especially important on odd sized books.

All other automatic coil binders do not allow you to use a margin that is larger than the bridge (the distance between two holes). Therefore you must make sure that the sheet fits exactly between the pins of the die pattern you are using. If the sheet is too large forces you to punch a partial hole you must trim the book down, or bind the book another way.

Since many books are not exactly 11 inches, or A4, this becomes a common occurrence. Since other machines force you to use a larger hole size than the Sterling Coilmaster III, the result will be a thinner margin. This is the reason other manufacture's recommend an oval hole. The ease of spinning in the coil is the same with round or oval holes. Oval dies tend to be much more expensive.

The Coilmaster binds books punched with standard dies. Use round holes or oval holes. Pick the pitch you want to work with: 4:1, 5:1, 6 mm center to center, 8 mm center to center, 3:1, 2.5:1 or any pitch imaginable.

The Thick Book Attachment allows for the binding of books up to 50 mm in diameter. This modification includes: A vibrating jogger, 3:1 or 2.5:1 combs (this clamps the book and guides the coil), and extra large knives. The Coilmaker can also be modified to have larger gaps put in the tracks of the conveyor and a larger blower.


Maximum Binding Size 12" x 17"
Minimum Book Size 4" x 4"
Binding Diameter Thickness 8 mm to 42 mm
Coil Inserting (Binding) Speed Up to 700 cycles per hour
Coil Forming Speed 6 mm = 2 seconds
  12 mm = 4 seconds
  18 mm = 6 seconds

Coilmaker Dimensions (Coil Former)

Length 56"
Width 26"
Weight 575 lbs.

Coilmaster Dimensions (Coil Binder)

Length 54"
Width 24"
Weight 400 lbs.

Electrical and Pneumatics

220 VAC 1-Phase, 25 Amps

Air Supply Requirements: 90 PSI