

Specification

2-in-1 Design for Punching & Binding Documents
Combine punching and comb binding in a single unit to save time and workspace, with a solid metal body that keeps every operation steady.

Punching Layout: 19 Rectangular Holes (3 × 8 mm)
The 19-hole (3 × 8 mm) pattern is tailored to US Letter width, keeping the first and last holes at equal distance from the paper edges.


Easy Paper Alignment
Adjustable paper positioner and clear scale markings help you center different paper sizes for accurate, professional-looking punching.

Adjustable Punching Margin
Set the punching margin to 3, 4, or 6 mm to match thin or thick documents, giving extra edge strength and reducing the risk of pages tearing out.

Easy Comb Loading
The comb slot holds the spine upright while you flip and load pages, keeping sheets aligned and making binding faster and easier.

Comb Binding for Documents
Works with standard 19-ring plastic comb spines to bind Letter, B5 and Junior Legal documents into reusable reports, manuals and notebooks.
Rayson Binding Machine Series

Specification
| Model | SD1202 |
|---|---|
| Holes quantity | 19 Holes |
| Holes Shape & Holes size | Rectangular; 8*3mm |
| Margin | 3mm, 4.5mm, 6mm |
| Comb Binding Capacity | 1/4" to 7/8"; Max. Binding about 200 sheets (70g) |
| Item Weight | 10.64 lb |
| Packaged Weight | 11.50 lb |
| Package Dimensions | 16.97 x 11.85 x 7.72 in |
| Design | Streamlined, easy-to-use design boosts productivity |

2-in-1 Design for Punching & Binding Documents
Combine punching and comb binding in a single unit to save time and workspace, with a solid metal body that keeps every operation steady.

Punching Layout: 19 Rectangular Holes (3 × 8 mm)
The 19-hole (3 × 8 mm) pattern is tailored to US Letter width, keeping the first and last holes at equal distance from the paper edges.


Easy Paper Alignment
Adjustable paper positioner and clear scale markings help you center different paper sizes for accurate, professional-looking punching.

Adjustable Punching Margin
Set the punching margin to 3, 4, or 6 mm to match thin or thick documents, giving extra edge strength and reducing the risk of pages tearing out.

Easy Comb Loading
The comb slot holds the spine upright while you flip and load pages, keeping sheets aligned and making binding faster and easier.

Comb Binding for Documents
Works with standard 19-ring plastic comb spines to bind Letter, B5 and Junior Legal documents into reusable reports, manuals and notebooks.
Quick Punching for Multiple Paper Sizes
The side guide and printed size marks help you quickly align Letter, B5 and Junior Legal sheets for neat, consistent punching. Letter size can be perfectly centered, while B5 and Junior Legal may have slightly uneven margins because of the fixed 19-hole layout.
Punching Custom Paper Sizes
Use the adjustable paper stop to punch A5, Half Letter, A6 and other custom sheet sizes with the fixed 19-hole pattern. Because the punching pins are fixed, the end holes on non-standard widths may not be perfectly symmetrical to the paper edges, but they still give secure binding for everyday notebooks and handouts.
Troubleshooting Slanted Punch Holes
Paper scraps, misaligned sheets or overloading can all cause slanted punch holes.
- Empty the chip tray regularly so paper scraps don’t tilt the pages.
- Make sure the paper edge sits flat and straight against the side guide before punching.
- Do not punch more sheets than the machine’s maximum capacity at one time.
Rayson Binding Machine Series
![]() Comb Binder | ![]() Comb Binder | ![]() Single Size Comb Pack | ![]() Multi-Size Comb Pack | ![]() Multi-Size Comb Pack | ![]() Multi-Color Comb Pack | ![]() Multi-Size Comb Pack |
|---|---|---|---|---|---|---|
| Customer Reviews | ||||||
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| Price | ||||||
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| Model / Diameter | ||||||
| SD-1501A21 | SD-220B | 1/4 inch | 1/4in,5/16in,3/8in,1/2in | 1/4in,5/16in,3/8in,1/2in | 1/2 in | 1/2in. 9/16in, 5/8in, 11/16in |
| Holes Shape / Color | ||||||
| Rectangular | Rectangular | Black | Black | White | Assorted Color | Black |
| Punch Capacity | ||||||
| 15 Sheets (80gsm/20lb) | 22 Sheets (80gsm/20lb) | 20 Sheets (80gsm/20lb) | 25-90 Sheets (80gsm/20lb) | 25-90 Sheets (80gsm/20lb) | 90 sheets (80gsm/20lb) | 25-145 Sheets (80gsm/20lb) |
| Open Throat Design | ||||||
| Yes | Yes | - | - | - | - | - |
| Die Type | ||||||
| Disengaging | Disengaging | - | -- | - | - | - |
| Item Quantity | ||||||
| 1 pc | 1 pc | 100 pcs | 100 pcs | 100 pcs | 100 pcs | 80 pcs |







































