SG-450 Coil Binding Machine

The SG-450 is a single-coil binding machine listed on the company website. It forms coated or galvanised wire into single coils and binds books in the same process, which suits notebooks, exercise books and wall and desk calendars. Single-coil binding, sometimes called spiral binding, gives a book that opens flat and turns fully around, which is why it is used for calendars and notebooks that are handled every day.

A naming note belongs at the top of this page. The company website's product page is titled SG-450, but the specification table on the same page lists the machine model as HLS-450. Both names are shown here, exactly as published, rather than merged into one, so that a buyer quoting either name is understood. The specification values below are transcribed from that table.

Specifications

Transcribed from the specification table on the company website's product page. The page title says SG-450 and the table says HLS-450; both are shown.

Reading the Specifications

Maximum binding width of 450 mm and minimum binding width of 100 mm describe the size range of books this machine binds. The upper figure covers A3-width calendars and large notebooks; the lower figure covers small pocket notebooks. A buyer whose books fall outside that range should look at a different model rather than assume this machine can be adjusted beyond it.

Maximum binding thickness of 20 mm sets the thickest book the machine binds. That covers ordinary notebooks, exercise books and calendars comfortably, but not thick multi-hundred-page volumes. If your books are thicker, check the industrial coil machines on this site, such as the 520A, whose listed capacity is larger.

Working speed of 700 to 1,300 books per hour, and the description's statement that the fastest binding takes about 3 seconds per book, place this machine between manual binders and full industrial lines. It suits a bindery or print shop with regular coil-binding runs, rather than an office that binds a few documents a week.

The product description adds interchangeable moulds and pitch bars, automatic cutting and closing of coil ends, and automatic book collection. Those features describe the working process: the machine forms the coil, cuts it to length, closes the ends and collects the finished book without the operator handling each coil by hand. They are reported here as the description's own statements.

Running the SG-450 and Planning Coil Stock

Running a single-coil binder well depends as much on coil stock as on the machine. The coil diameter must match the book thickness, the pitch must match the punched holes, and the coil material — coated or galvanised wire, as the description states — must suit the book's use. A bindery that binds many sizes keeps several coil diameters in stock and changes the machine's moulds and pitch bars when the job changes, which the description says are interchangeable.

The automatic cutting and closing of coil ends, and automatic book collection, reduce the handling per book, which is where the listed speed of 700 to 1,300 books per hour comes from. Real output depends on keeping paper, coil and collection moving together: a stop in any one of the three stops the line. For planning, treat the listed speed as the machine's rate under steady feeding, and plan staffing and stock around the lower end of the range for mixed work.

Before ordering, confirm the coil diameters and pitches you will use, the moulds supplied with the machine, and the power and floor requirements. Those points, together with the published specifications, give a complete picture of whether this machine fits your bindery.