HSS Taper Shank Drill Bit
HSS taper shank drill bits feature Morse taper shanks (MT1 to MT5) that self-lock directly into drill press spindles, lathe tailstocks, and milling machine spindles without the need for a separate chuck. Manufactured to DIN 345 standards, these heavy-duty bits are designed for large-diameter drilling where positive drive, concentricity, and high torque transmission are essential. The taper shank design prevents slippage under load and ensures accurate hole positioning in production and maintenance drilling operations.
HSS Taper Shank Drill Bit (DIN 345) Technical Data
| Morse Taper | Drill Diameter Range (mm) | Overall Length (mm) | Application |
|---|---|---|---|
| MT1 | 12.00 - 15.50 | 182 - 218 | Light drill presses, bench lathes |
| MT2 | 16.00 - 23.00 | 218 - 253 | Standard drill presses, milling machines |
| MT3 | 24.00 - 31.00 | 281 - 301 | Heavy drill presses, lathes |
| MT4 | 32.00 - 50.00 | 334 - 369 | Large industrial machines, heavy fabrication |
| MT5 | 51.00 - 70.00 | 412 - 447 | Extra-heavy industrial machines, large boring mills |
HSS Taper Shank Drill Bit Size Chart (DIN 345)
| Diameter (mm) | Flute Length (mm) | Overall Length (mm) | Morse Taper |
|---|---|---|---|
| 12.00 | 101 | 182 | MT1 |
| 12.50 | 101 | 182 | MT1 |
| 14.00 | 108 | 189 | MT1 |
| 14.50 | 114 | 212 | MT1 |
| 15.00 | 114 | 212 | MT1 |
| 15.50 | 120 | 218 | MT1 |
| 16.00 | 120 | 218 | MT2 |
| 16.50 | 125 | 223 | MT2 |
| 17.00 | 130 | 228 | MT2 |
| 17.50 | 130 | 228 | MT2 |
| 18.00 | 130 | 228 | MT2 |
| 18.50 | 135 | 233 | MT2 |
| 19.00 | 135 | 233 | MT2 |
| 19.50 | 140 | 238 | MT2 |
| 20.00 | 140 | 238 | MT2 |
| 21.00 | 145 | 243 | MT2 |
| 22.00 | 150 | 248 | MT2 |
| 23.00 | 155 | 253 | MT2 |
| 24.00 | 160 | 281 | MT3 |
| 25.00 | 160 | 281 | MT3 |
| 26.00 | 165 | 286 | MT3 |
| 27.00 | 170 | 291 | MT3 |
| 28.00 | 170 | 291 | MT3 |
| 29.00 | 175 | 296 | MT3 |
| 30.00 | 175 | 296 | MT3 |
| 31.00 | 180 | 301 | MT3 |
| 32.00 | 185 | 334 | MT4 |
| 33.00 | 185 | 334 | MT4 |
| 34.00 | 190 | 339 | MT4 |
| 35.00 | 190 | 339 | MT4 |
| 36.00 | 195 | 344 | MT4 |
| 37.00 | 195 | 344 | MT4 |
| 38.00 | 200 | 349 | MT4 |
| 39.00 | 200 | 349 | MT4 |
| 40.00 | 200 | 349 | MT4 |
| 41.00 | 205 | 354 | MT4 |
| 42.00 | 205 | 354 | MT4 |
| 43.00 | 210 | 359 | MT4 |
| 44.00 | 210 | 359 | MT4 |
| 45.00 | 210 | 359 | MT4 |
| 46.00 | 215 | 364 | MT4 |
| 47.00 | 215 | 364 | MT4 |
| 48.00 | 220 | 369 | MT4 |
| 49.00 | 220 | 369 | MT4 |
| 50.00 | 220 | 369 | MT4 |
| 51.00 | 225 | 412 | MT5 |
| 52.00 | 225 | 412 | MT5 |
| 53.00 | 230 | 417 | MT5 |
| 55.00 | 230 | 417 | MT5 |
| 56.00 | 235 | 422 | MT5 |
| 58.00 | 235 | 422 | MT5 |
| 60.00 | 235 | 422 | MT5 |
| 62.00 | 240 | 427 | MT5 |
| 63.00 | 240 | 427 | MT5 |
| 65.00 | 245 | 432 | MT5 |
| 68.00 | 250 | 437 | MT5 |
| 70.00 | 250 | 437 | MT5 |
| 72.00 | 255 | 442 | MT5 |
| 75.00 | 260 | 447 | MT5 |
| 76.00 | 260 | 447 | MT5 |
Industrial HSS Taper Shank Drilling Tools for Machine Tool Drilling
HSS taper shank drill bits are essential for industrial workshops that require large-diameter drilling with machine tools. The Morse taper shank provides a self-locking, positive-drive connection between the drill bit and machine spindle, eliminating the need for drill chucks and ensuring perfect concentricity. This design is standard in drill presses, lathes, milling machines, and radial arm drills where heavy feed rates and high torque demand a secure, vibration-free mounting.
Manufactured to DIN 345 standards, these bits feature heavy-duty web construction for increased rigidity and torque capacity compared to straight shank bits of equivalent diameter. Precision-ground flutes provide efficient chip evacuation at deeper drilling depths. Available in Morse taper sizes MT1 through MT5, covering drilling diameters from 6mm to 76mm for structural steel fabrication, marine shaft work, and heavy machinery maintenance.
For enhanced performance on hard alloys, consider our HSS Cobalt Taper Shank Drilling Tools with cobalt-enhanced steel for high-temperature drilling applications.
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