Description
Holemaker
AT4050 Gold Series TiN Annular Cutter 40mm x 50mm — 3/4″ Multi-Fit Shank
Part No: AT4050 | Barcode: 9328042007520 | Product Group: Mag Drill Cutters
Holemaker Gold Series 40mm x 50mm annular cutter with TiN coating for extended tool life and faster cutting. M2AL high-speed steel with Multi-Fit 3/4″ universal shank suits most magnetic base drilling machines.
40mm Diameter
50mm Cutting Depth
TiN Coated
M2AL HSS
3/4″ Multi-Fit Shank
Fully Ground
Compatible Materials
Mild Steel
Structural Steel
Cast Iron
Stainless Steel (Light)
Key Features & Benefits
- TiN (Titanium Nitride) Coating — increases surface hardness to 85 HRC and reduces friction by 30%, delivering longer tool life and faster cutting speeds.
- M2AL High-Speed Steel — premium European steel hardened up to 67.5 HRC for consistent performance in demanding applications.
- Step Hardened Process — produces extremely hard tooth tips that maintain their cutting edge through heavy-duty use.
- Multi-Cut Geometry — engineered tooth profile delivers smooth, fast cutting with decreased chatter and vibration.
- Fully Ground with Internal Relief — produces reamed-quality, burr-free holes while requiring less torque from the machine.
- Multi-Fit 3/4″ Universal Shank — two flat sections on the 19.05mm shank ensure compatibility with most magnetic base drill brands.
When to Use This Cutter
The AT4050 is a 40mm diameter, 50mm depth annular cutter designed for use in magnetic base drilling machines. Choose this cutter when you need clean, accurate 40mm holes in steel plate, structural sections, or fabrication work. The 50mm cutting depth suits thicker materials and structural steel up to 50mm thick. Requires pilot pin SP16004 (6.34mm x 102mm).
Pro Tip: Always use cutting fluid and the correct pilot pin (SP16004 (6.34mm x 102mm)) for best results. Let the cutter do the work — moderate feed pressure produces cleaner holes and extends cutter life. The TiN coating performs best at recommended speeds; avoid excessive RPM.
Authorised Australian Dealer — This product is sourced directly from Holemaker Australia and is backed by full Australian manufacturer warranty and local support.
Product Specifications
| Part No. | Diameter | Cutting Depth | Shank | Barcode |
|---|---|---|---|---|
| AT1250 | 12mm | 50mm | 19.05mm (3/4″) | 9328042007261 |
| AT1350 | 13mm | 50mm | 19.05mm (3/4″) | 9328042007278 |
| AT1450 | 14mm | 50mm | 19.05mm (3/4″) | 9328042007285 |
| AT1650 | 16mm | 50mm | 19.05mm (3/4″) | 9328042007308 |
| AT1750 | 17mm | 50mm | 19.05mm (3/4″) | 9328042007315 |
| AT1850 | 18mm | 50mm | 19.05mm (3/4″) | 9328042007322 |
| AT2050 | 20mm | 50mm | 19.05mm (3/4″) | 9328042007346 |
| AT2250 | 22mm | 50mm | 19.05mm (3/4″) | 9328042007360 |
| AT2450 | 24mm | 50mm | 19.05mm (3/4″) | 9328042007384 |
| AT2550 | 25mm | 50mm | 19.05mm (3/4″) | 9328042007391 |
| AT2650 | 26mm | 50mm | 19.05mm (3/4″) | 9328042007407 |
| AT2850 | 28mm | 50mm | 19.05mm (3/4″) | 9328042007421 |
| AT3050 | 30mm | 50mm | 19.05mm (3/4″) | 9328042007445 |
| AT3250 | 32mm | 50mm | 19.05mm (3/4″) | 9328042007452 |
| AT3550 | 35mm | 50mm | 19.05mm (3/4″) | 9328042007483 |
| AT4050 ★ | 40mm | 50mm | 19.05mm (3/4″) | 9328042007520 |
★ You are viewing the highlighted variant. Other sizes in this series are also available.
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