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Drill 52 NWKc HSS DIN 345 Zbrojovka
0399
Diameter (mm): 52301 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
€178.03 tax inc.
Net price: €144.74
Description
DIAMETER Ø52 mm
MORSE TAPER MT5
OVERALL LENGTH 412 mm
FLUTE LENGTH 225 mm
Technical specifications of the Ø52 mm drill bit
Twist drill with Morse taper shank
| TECHNICAL DATA | |
|---|---|
| Diameter | Ø52 NWKc HSS |
| Standard | DIN 345 |
| Drill type | NWKc — twist drill with taper shank |
| Material | HSS (high-speed steel) |
| Overall length l1 | 412 mm |
| Flute length l2 | 225 mm |
| Morse taper | MT5 |
| Point angle | 118° |
| Diameter tolerance | h8 |
| Cutting direction | Right-hand |
Ø52 mm HSS metal drill bit – Morse taper MT5
Product description and key benefits
The Ø52 mm HSS twist drill with an MT5 Morse taper is designed for use on machine tools with a rigid construction and sufficient drive power. At diameters above 50 mm, the chisel edge generates a significant portion of the axial force — pilot holes reduce this effect and improve tool guidance stability. The Ø52 Morse taper drill is used in machinery plants, shipyards, and valve and fitting factories.
Key benefits of the Ø52 mm metal drill bit
- MT5 taper — direct mounting — eliminates the drill chuck as a source of radial runout and tool slippage
- HSS cutting edge, 63–65 HRC — hardness that ensures stable cutting of steels with tensile strengths up to 900 N/mm² throughout the interval between sharpenings
- Right-hand helical flutes — effective chip evacuation from the cutting zone — essential when drilling holes deeper than 2×D
- Compact 412 mm design — shorter tool overhang provides greater rigidity and less vibration
- Repeated reconditioning — the HSS cutting edge can be resharpened 8–12 times while retaining its geometry — at l2 = 225 mm, the resharpening allowance is approximately 28 mm
- Sleeve compatibility — use on drilling machines with MT4 to MT6 spindles using reduction sleeves
The Ø52 Morse taper drill is used in heavy machinery manufacturing plants, ship repair yards, and industrial valve and fitting factories. Typical applications include holes for mechanical anchors in foundation plates, holes in gearbox bearing end shields, and bores for guide bushings. Hole tolerance class H12 (Ø52.000–Ø52.300 mm); H7 and 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 Ø52 MM DRILL BIT:
| ✓ | MT5 → MT6 — for a spindle with an MT6 socket |
| ✓ | MT5 → MT4 — not recommended (socket capacity below the operating load) |
| ✓ | MT5 drill drift — for removing the drill bit from the spindle |
Cutting data for the Ø52 mm drill bit according to ISO 513
Recommended machining conditions for a diameter of Ø52 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 | 0.32 | 67÷122 | 21÷39 |
| K Cast iron | Gray cast iron GG20–GG30 | 13÷16 | 0.32 | 80÷98 | 26÷31 |
| N Copper and Al alloys | Cu, CuZn, Al, and alloys | 25÷28 | 0.40÷0.50 | 153÷171 | 61÷86 |
Vibration at large diameters
At a diameter of 52 mm, the risk of vibration is increased — the long chisel edge generates an asymmetrical load. A Ø20–25 mm pilot hole eliminates chisel edge engagement. Additionally: check spindle runout (max. 0.03 mm) and secure the workpiece with rigid fixtures.
Material compatibility of the Ø52 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 50%, pilot drilling required)
▲ Aluminum and Al alloys (increased Vc, emulsion cooling)
✗ Hardened steels above 45 HRC
Frequently asked questions about the Ø52 mm drill bit
At least 4 kW of motor power and an MT5 or larger spindle. When drilling S355 steel, torque at the drill reaches 130 Nm — bench and magnetic drilling machines do not provide sufficient rigidity. The optimal machine is a box-column or radial drilling machine with power feed.
Yes — it is required. A Ø20–25 mm pilot hole eliminates cutting by the chisel edge, which at a diameter of 52 mm generates 60–70% of the total axial force and severe vibration.
1) Drill a Ø20–25 mm pilot hole. 2) Check runout in the spindle (maximum 0.03 mm). 3) Clamp the workpiece rigidly. 4) Use power feed — manual feed causes uneven pressure and resonance.
Product accessories
Reduction sleeve MK6 MK5 1751 PTPa DIN 228
Reference: 1187 In stock < 10 items
€44.74
€55.03 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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