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Metal drill bit 20 extra long 370/260 HSS DIN 1869
€77.68 tax inc.
Net price: €63.16
Description
Technical data of extra long drill fi 20
| Technical data | |
|---|---|
| Working diameter of drill d | Ø20 mm |
| Overall length l1 | 370 mm |
| Flute length l2 | 260 mm |
Cutting data for the Ø20 mm HSS NWKp extra-long drill bit
| Material | Cutting speed Vc [m/min] | Feed per revolution f [mm] | Spindle speed n [rpm] | Total feed rate [mm/min] |
|---|---|---|---|---|
| PSteel | 12-21 | 0.20 | 191 | 38 |
| KCast iron | 10-15 | 0.20 | 159 | 32 |
| NCopper and alloys | 12-25 | 0.25 | 191 | 48 |
May be useful
Cutting parameters calculator
Extra-long straight-shank twist drills suitable for drilling steel and cast iron in numerous general-purpose applications. The extended body allows deep-hole drilling and operation with extended tool reach beyond the material surface. The range of materials includes carbon steel, free-cutting steel, structural steel, gray cast iron, aluminum bronze, nickel silver (Cu-Zn-Ni alloy), tin-zinc bronze, electronic-grade copper, and ductile brass. The design supports highly productive, precise drilling, even under heavy-duty operating conditions.
Extra long drill bit for metal 20
Ø20 extra-long metal drill bit is a straight-shank twist drill designed for steel and cast iron in workshop and industrial applications. Its extended length facilitates deep-hole drilling and work with a long tool overhang. It can machine carbon steel, free-cutting steel and structural steel, gray cast iron, aluminum bronze, nickel silver (Cu-Zn-Ni alloy), tin-zinc bronze, electronic-grade copper and ductile brass. It can also drill alloy steel with an ultimate tensile strength Rm of up to 1200 N/mm², zinc and zinc alloys, and malleable cast iron.
This professional extra-long straight-shank twist drill is ground to DIN 1869 from modern, high-grade high-speed steel (HSS); the tool complies with the Polish NWKp standard. Its 118° point angle allows drilling to start without prior spot drilling (center punching). Available in our store Ø20 extra-long metal drill bit in the NWKp version has a diameter of 20 mm and lengths of 370/260 (overall / flute), making it suitable for very deep holes. HSS provides high resistance to demanding operating conditions, including the heat generated during high-speed drilling, resulting in more efficient and precise machining. The drilled holes remain aligned along their entire length and have low surface roughness. These drills are recommended for both conventional drilling machines and modern CNC machine tools.
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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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