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Description
DIAMETER Ø14 mm
MORSE TAPER MT1
OVERALL LENGTH 189 mm
FLUTE LENGTH 108 mm
Technical specifications of the Ø14 mm drill bit
Twist drill with Morse taper shank
| TECHNICAL DATA | |
|---|---|
| Diameter | Ø14 NWKc HSSE |
| Standard | DIN 345 |
| Drill type | NWKc — twist drill with taper shank |
| Material | HSSE (cobalt high-speed steel) |
| Overall length l1 | 189 mm |
| Flute length l2 | 108 mm |
| Morse taper | MT1 |
| Point angle | 118° |
| Diameter tolerance | h8 |
| Cutting direction | Right-hand |
Ø14 mm HSSE twist drill – MT1 Morse taper
Product description and key benefits
The Ø14 mm NWKc metal drill bit is based on DIN 345, which defines both the MT1 taper geometry and the proportions of the flute length to the overall tool length. This standardization ensures full interchangeability — a drill bit from one manufacturer can replace one from another without spindle adjustment or sleeve replacement. With a flute length of 108 mm, the Ø14 Morse taper drill bit can drill through holes in typical steel sections used in workshop production.
Key benefits of the Ø14 mm metal drill bit
- 5% cobalt in the HSS matrix — raises the tempering temperature to 650°C — 50°C higher than standard HSS
- Direct mounting in an MT1 spindle — eliminates the chuck as a source of runout — particularly important when drilling stainless steels, where runout reduces surface quality
- Drilling austenitic steels — the HSSE cutting edge handles work hardening in 304/316/321 steels
- h8 diameter tolerance — repeatable hole size even in difficult-to-machine materials
- Conforms to DIN 345 — dimensions identical to HSS — a replacement for use in existing machining cells
- Repeated resharpening — HSSE steel retains its properties after the cutting edge is reground on a tool grinder
The Ø14 Morse taper drill is suitable for series production of steel components, where repeatable hole dimensions determine assembly quality. With H12 tolerance at Ø14.000–Ø14.180 mm, holes require no additional machining for bolted connections. More precise fits are achieved with a finishing reamer.
Morse tapers – dimensions to DIN 228
Dimension table for all Morse tapers MT0–MT6
| Taper | Diameter D [mm] | Length [mm] |
|---|---|---|
| MT0 | 9.045 | 49.8 |
| MT1 | 12.065 | 53.5 |
| MT2 | 17.780 | 64.0 |
| MT3 | 23.825 | 80.5 |
| MT4 | 31.267 | 117.5 |
| MT5 | 44.399 | 149.5 |
| MT6 | 63.348 | 210.0 |
REDUCTION SLEEVES COMPATIBLE WITH THE Ø14 MM DRILL BIT:
| ✓ | MT1 → MT2 — for a spindle with an MT2 socket |
| ✓ | MT1 → MT3 — for a spindle with an MT3 socket |
| ✓ | MT1 drill drift — for removing the drill bit from the spindle |
Cutting data for the Ø14 mm drill bit according to ISO 513
Recommended machining conditions for a diameter of Ø14 mm
| ISO symbol | Workpiece material | Vc [m/min] | f [mm/rev] | n [rpm] | Vf [mm/min] |
|---|---|---|---|---|---|
| P Steel | Structural steel up to 900 N/mm² | 11÷20 | 0.12 | 250÷455 | 30÷55 |
| K Cast iron | Gray cast iron GG20–GG30 | 13÷16 | 0.12 | 296÷364 | 36÷44 |
| N Copper and Al alloys | Cu, CuZn, Al, and alloys | 25÷28 | 0.16÷0.20 | 568÷637 | 91÷127 |
Spot drilling
When drilling on uneven surfaces, castings with machining allowance, or inclined planes, spot drilling with an NC 90° drill is recommended before using the Ø14 mm drill. The spot-drilled hole stabilizes the point position and prevents the cutting edge from slipping away from the marked location.
Material compatibility of the Ø14 mm drill bit
Range of workpiece materials and application limitations
✓ Structural steel (S235, S355) up to 900 N/mm²
✓ Gray and ductile cast iron (GG20, GGG40)
✓ Low-carbon and medium-alloy steel
▲ Stainless steel (Vc reduced by 30%, ample coolant)
▲ Aluminum and Al alloys (emulsion coolant required)
✗ Hardened steels above 45 HRC
Frequently asked questions about the Ø14 mm drill bit
Yes — using an MT1→MT2 reduction sleeve. The sleeve ensures proper seating of the taper in the larger spindle socket. Use a correctly sized drill drift for removal.
The maximum drilling depth is the flute length l2 = 108 mm minus the drill point length (approximately 4 mm). The effective usable depth is therefore approximately 104 mm.
In S235/S355 structural steels, spot drilling is not necessary — the 118° angle provides self-centering. Spot drilling with an NC 90° drill is recommended when drilling on milled surfaces, castings with machining allowance, or difficult-to-machine materials.
Product accessories
Reduction sleeve MK4 MK1 1751 PTPa DIN 228
Reference: 1179 In stock > 10 items
€15.79
€19.42 brutto
Reduction sleeve MK3 MK1 1751 PTPa DIN 228
Reference: 1184 In stock > 10 items
€11.84
€14.57 brutto
Drill bit 14 for Hardox Morsea hardened steel
Reference: 5782 In stock > 10 items
€10.53
€12.95 brutto
Reduction sleeve MK2 MK1 1751 PTPa DIN 228
Reference: 2586 In stock < 10 items
€9.21
€11.33 brutto
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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