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Metal drill bit 38.5 NWKc HSS DIN 345 Werko
0423
Diameter (mm): 38,5301 sizes of this drill
33,13,23,33,43,53,63,73,83,944,14,24,34,44,54,64,74,84,955,15,25,35,45,55,65,75,85,966,16,26,36,46,56,66,76,86,977,17,157,27,257,37,47,57,67,77,757,87,988,18,28,258,38,48,58,68,78,88,999,19,29,259,39,49,59,69,79,759,89,91010,110,210,310,410,510,610,710,7510,810,91111,111,211,2511,311,411,511,611,711,811,91212,112,212,312,412,512,612,712,812,91313,113,213,2513,313,413,513,613,713,7513,813,91414,2514,414,514,751515,2515,515,751616,2516,516,751717,2517,517,751818,2518,518,751919,2519,519,752020,2520,520,752121,2521,521,752222,2522,522,752323,2523,523,752424,2524,524,752525,2525,525,752626,2526,526,752727,2527,527,752828,2528,528,752929,2529,529,753030,2530,530,753131,2531,531,753232,2532,532,753333,2533,533,753434,2534,534,753535,2535,535,753636,2536,536,753737,2537,537,7537,83838,538,753939,2539,539,754040,2540,54141,54242,54343,54444,54545,54646,546,75474848,54949,55050,55151,55252,553545556575858,55960616263646566676869707172737475767778798081828384858687888990919293949596979899100
€80.92 tax inc.
Net price: €65.79
Description
DIAMETER Ø38.5 mm
MORSE TAPER MT4
OVERALL LENGTH 349 mm
FLUTE LENGTH 200 mm
Technical specifications of the Ø38.5 mm drill bit
Twist drill with Morse taper shank
| TECHNICAL DATA | |
|---|---|
| Diameter | Ø38.5 NWKc HSS |
| Standard | DIN 345 |
| Drill type | NWKc — twist drill with taper shank |
| Material | HSS (high-speed steel) |
| Overall length l1 | 349 mm |
| Flute length l2 | 200 mm |
| Morse taper | MT4 |
| Point angle | 118° |
| Diameter tolerance | h8 |
| Cutting direction | Right-hand |
Ø38.5 mm HSS metal drill bit – Morse taper MT4
Product description and key benefits
The Ø38.5 mm HSS metal drill bit with an MT4 Morse taper shank is designed for heavy-duty hole machining in structural and alloy steels. DIN 345 specifies an MT4 taper for diameters of 32–50 mm, providing a compromise between shank size and load capacity. The Ø38.5 Morse taper drill bit requires a machine tool with a power rating of at least 2.2 kW and a Morse taper spindle.
Key benefits of the Ø38.5 mm metal drill bit
- Morse taper MT4 — self-holding mounting in the spindle eliminates slipping under full cutting torque
- HSS high-speed steel — the cutting edge retains its working hardness up to 600°C in structural and low-alloy steels
- Full compliance with DIN 345 — ensures interchangeability and compatibility with reduction sleeves and Morse taper spindles
- 118° point angle — versatile cutting geometry performs well in structural and medium-hard steels, cast iron, and aluminum
- Diameter tolerance h8 — repeatable hole size within a tolerance class that ensures consistent parameters in series production
- Resharpenable cutting edges — repeated sharpening on a grinder while maintaining the 118° angle and cutting edge symmetry
The Ø38.5 mm Morse taper drill bit is used for heavy-duty machining — manufacturing machine frames, special-purpose vehicle chassis, and components of metallurgical equipment. The tool operates under conditions where hole quality depends on clamping rigidity and stable cutting parameters. Tolerance grade H12, Ø38.500–Ø38.750 mm.
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 Ø38.5 MM DRILL BIT:
| ✓ | MT4 → MT5 — for a spindle with an MT5 socket |
| ✓ | MT4 → MT3 — for a spindle with an MT3 socket |
| ✓ | MT4 drill drift — for removing the drill bit from the spindle |
Cutting data for the Ø38.5 mm drill bit according to ISO 513
Recommended machining conditions for a diameter of Ø38.5 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 | 0.25 | 91÷165 | 23÷41 |
| K Cast iron | Gray cast iron GG20–GG30 | 13÷16 | 0.25 | 107÷132 | 27÷33 |
| N Copper and Al alloys | Cu, CuZn, Al, and alloys | 25÷28 | 0.32÷0.40 | 207÷231 | 66÷92 |
Minimum machine tool power
The Ø38.5 mm drill requires a drilling machine with at least 2.2 kW of power and power spindle feed. Stability is difficult to maintain with manual feed — uneven pressure leads to vibration and accelerated cutting edge wear. A box-column or radial drilling machine is recommended.
Material compatibility of the Ø38.5 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 40%, ample coolant)
▲ Aluminum and Al alloys (emulsion coolant required)
✗ Hardened steels above 45 HRC
Frequently asked questions about the Ø38.5 mm drill bit
When drilling S355 steel with a Ø38.5 mm drill, the torque is approximately 96 Nm. This requires a drilling machine with a minimum power rating of 2.3 kW and power spindle feed.
For a drilling machine with an MT5 spindle: MT4→MT5 sleeve. For a smaller MT3 spindle: MT4→MT3 sleeve (check that the operating load does not exceed the socket capacity). For removal: MT4 drill drift.
Depth greater than 3×D (115 mm): reduce feed by 30–50%, retract every 1×D, and use a 6–8% emulsion at a minimum flow rate of 6 l/min. Peck drilling prevents chips from jamming in the flutes.
Product accessories
Reduction sleeve MK6 MK4 1751 PTPa DIN 228
Reference: 1186 In stock < 10 items
€36.84
€45.32 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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