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Hollow Paper Drill Bit for Straight Shank Punch Punching Machine 2.5mm - 10mm

Product Description

Product Description

Quantity: 1pcs

Condition: New

Key Selling Points：

✨ Hollow Tubular Punch Cutting Edge Design: Hollow thin-wall cutting tip delivers clean round holes on paper without paper burrs, tearing or uneven edge damage, neat punching effect for document binding.
🪶 High Speed Steel Integral Machined Body: Whole drill blank quenched for high hardness and wear resistance, maintains sharp cutting edge after long-time continuous paper punching, not easy to dull.
💕 Thickened Anti-Slip Shank with Positioning Ring: Raised limit ring on the shank controls punching depth accurately, uniform hole depth every time; standard straight shank fits all desktop paper punching machines perfectly.
🎀 Smooth Inner Chip Discharge Channel: Hollow inner tube automatically ejects punched paper scraps during operation, no scrap blockage inside the bit to affect continuous punching efficiency.
📦 Wide Office Paper Binding Application: Ideal for punching receipts, invoices, notebooks, document files, account books, office paper, used on manual and electric paper binding punch machines.

Full Product Description

Product Overview

This hollow paper punch drill bit is integrally manufactured from quenched high speed steel, adopting hollow tubular cutting head and limit ring positioning shank structure. Specially developed for office paper punching and binding work, it creates smooth burr-free round holes on various office paper materials, compatible with most desktop manual and electric punching binding machines widely used in finance offices, accounting departments and document sorting workshops.

Core Advantages

1. Sharp Hollow Tubular Punch Cutting Head

The thin-wall hollow cutting edge is precision ground, it cuts clean circular holes through single or stacked multi-layer paper at once. No paper edge tearing, rough burrs or irregular hole deformation, making documents tidy and neat for subsequent binding.

2. Wear Resistant Quenched High Speed Steel Material

The entire drill body undergoes high temperature quenching heat treatment to boost surface hardness. Even after long-term mass punching of thick stacks of invoices and account books, the cutting edge stays sharp without frequent replacement, lowering office consumable costs.

3. Limit Ring Design for Consistent Punch Depth

A thickened positioning ring is fixed on the shank, which restricts the downward penetration depth of the drill bit during punching. Every punched hole keeps uniform depth, avoiding over-penetration that damages the machine base and uneven hole sizes.

4. Built-In Hollow Scrap Discharge Channel

The through hollow inner cavity acts as a waste paper outlet. Punched paper round scraps slide upward out of the tube automatically during operation, preventing scrap accumulation inside the drill bit that would cause jamming and broken paper holes.

5. Multi-Scenario Office Document Punching Usage

  • Accounting Office: Receipt, invoice, account book multi-layer paper punching
  • Administration Department: Contract files, official document binding hole making
  • Stationery Processing: Notebook, notepad, handmade paper craft hole punching
  • Printing Shop: Batch file sorting, loose-leaf paper pre-punching processing

Warm Tips

  1. Clear accumulated paper scraps from the hollow tube frequently during continuous punching to avoid clogging.
  2. Do not punch hard cardboard or metal materials with this paper drill bit, which will chip the cutting edge.
  3. Apply a tiny amount of lubricating oil on the cutting edge regularly to keep smooth punching and extend service life.



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        Note:         
Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same.There may be errors in manual measurement of dimensions.

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Delivery details &Shopping Detail:

We usually send the item to buyer by China Post AIRMAIL..

It usually takes 25-30 days to you.            

Maybe it takes more than 45 days to Eastern Europe, South Asia and Africa.

The most time takes 45-50 days to Italy and Spain.

If more than 55 days,please contact us.     

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