Maykestag Jobber Drills RN are made of new micro-grain-cobalt which produces higher hardness, heat endurance and bending strength. Maykestag manufactures Maykestag Jobber Drills RN with the most up-to-date coating technology for your stability and wear resistance. The Maykestag's optimised tool geometry provides higher surface quality of the material to be machined and higher tool stability (even in unstable working conditions). Maykestag Jobber Drills RN offer premium quality twist drills. It is highly recommended for drilling steel and steel castings, alloy and plain carbon, grey iron castings, copper-alloys, nickel- silver, graphite and similar materials. Maykestag Jobber Drills RN are suitable for material with strength up to 1100 N/mm2. To serve…
Maykestag Jobber Drills RN are made of new micro-grain-cobalt which produces higher hardness, heat endurance and bending strength. Maykestag manufactures Maykestag Jobber Drills RN with the most up-to-date coating technology for your stability and wear resistance. The Maykestag's optimised tool geometry provides higher surface quality of the material to be machined and higher tool stability (even in unstable working conditions). Maykestag Jobber Drills RN offer premium quality twist drills. It is highly recommended for drilling steel and steel castings, alloy and plain carbon, grey iron castings, copper-alloys, nickel- silver, graphite and similar materials. Maykestag Jobber Drills RN are suitable for material with strength up to 1100 N/mm2.
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dh8 mm |
l1 mm |
l2 mm |
0.30 | 19 | 3 |
0.35 | 19 | 4 |
0.40 | 20 | 5 |
0.45 | 20 | 5 |
0.50 | 22 | 6 |
0.55 | 24 | 7 |
0.60 | 24 | 7 |
0.65 | 26 | 8 |
0.70 | 28 | 9 |
0.75 | 28 | 9 |
● | ● | ● |
● | ● | ● |
● | ● | ● |
15.50 | 178 | 120 |
16.00 | 178 | 120 |
16.50 | 184 | 125 |
17.00 | 184 | 125 |
17.50 | 191 | 130 |
18.00 | 191 | 130 |
18.50 | 198 | 135 |
19.00 | 198 | 135 |
19.50 | 205 | 140 |
20.00 | 205 | 140 |
MAYKESTAG JOBBER DRILLS RN DIN 338
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