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All Products ➞ Bordo ➞ Drills ➞ Specialist ➞ Reduced Shank HSS ➞ 1/2" Shank Metric
21mm 1/2" Reduced Shank Drill
| Part Number: | 2654-21.00 |
| Brand: | Bordo |
| Barcode: | 9326518004172 |
| Pack Qty: | 1 |
| Feed per revolution mm: | 0.39 |
| Spindle Speed Aluminium/Brass RPM: | 925 |
| Spindle Speed Cast Iron RPM: | 364 |
| Spindle Speed Free Cutting Steel RPM: | 652 |
| Spindle Speed Malleable Iron RPM: | 410 |
| Spindle Speed Med. Carbon Steel RPM: | 455 |
| Spindle Speed Stainless Steel RPM: | 182 |
| Spindle Speed Tool Steel RPM: | 273 |
| Spindle Speed Wood/Plastic RPM: | 1380 |
| Diameter (mm): | 21 |
| Flute Length (mm): | 89 |
| Overall Length (mm): | 152 |
About this item:
- 21mm 1/2" Reduced Shank Drill
- Reduced shank HSS twist drill.
- 118° notched point with 30° helix.
- Notched point is a variation on the standard chisel point, providing faster starting and reduced drill wander.
- 118° point angles are ideal for use in materials such as mild steel and cast iron.
- The 118° point creates easily controlled chips which are wide and thin.
- Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating.
- This surface aids chip flow and heat dissipation.
- The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.