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Description
DIAMETER Ø32 mm
MORSE TAPER MT4
OVERALL LENGTH 334 mm
FLUTE LENGTH 185 mm
Technical specifications of the Ø32 mm drill bit
Twist drill with Morse taper shank
| TECHNICAL DATA | |
|---|---|
| Diameter | Ø32 NWKc HSSE |
| Standard | DIN 345 |
| Drill type | NWKc — twist drill with taper shank |
| Material | HSSE (cobalt high-speed steel) |
| Overall length l1 | 334 mm |
| Flute length l2 | 185 mm |
| Morse taper | MT4 |
| Point angle | 118° |
| Diameter tolerance | h8 |
| Cutting direction | Right-hand |
Ø32 mm HSSE twist drill – MT4 Morse taper
Product description and key benefits
The Ø32 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 Ø32 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 Ø32 mm metal drill bit
- Cobalt 5% — hardness up to 67 HRC — greater hardness than standard HSS (63–65 HRC) translates into longer service life between sharpenings
- MT4 Morse taper to DIN 345 — secure, self-holding mounting regardless of load level
- Cutting-edge stability in INOX steels — HSSE does not require as drastic a reduction in Vc as HSS when drilling acid-resistant steels
- Flute length 185 mm — allows drilling through standard structural component thicknesses
- Versatility — drilling structural steels, stainless steels, cast iron, and aluminum with one tool
- 118° angle — self-centering in most materials without spot drilling
The Ø32 Morse taper drill is chosen for heavy-duty hole machining in machine building, ship repair yards, and valve and fitting factories. Typical applications: holes in end plates, bearing end shields, and drive components. Hole tolerance class H12 (Ø32.000–Ø32.250 mm); tighter fits are achieved by boring.
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 Ø32 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 Ø32 mm drill bit according to ISO 513
Recommended machining conditions for a diameter of Ø32 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 | 0.20 | 109÷199 | 22÷40 |
| K Cast iron | Gray cast iron GG20–GG30 | 13÷16 | 0.20 | 129÷159 | 26÷32 |
| N Copper and Al alloys | Cu, CuZn, Al, and alloys | 25÷28 | 0.25÷0.32 | 249÷279 | 62÷89 |
Cooling for large diameters
At a diameter of 32 mm, the volume of chips generated per centimeter of depth is approximately 8.0 cm³. Use a 6–8% emulsion at a minimum flow rate of 6 l/min. Without pressurized cooling, limit the depth per pass to 48 mm.
Material compatibility of the Ø32 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 Ø32 mm drill bit
When drilling S355 steel with a Ø32 mm drill, the torque is approximately 80 Nm. This requires a drilling machine with a minimum power rating of 1.9 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 (96 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
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| 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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