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Modular Drills
Application Data • Victory ™ TOP DRILL M1 ™ • UP(M) Geometry in WU25PD ™
Coolant Pressure
The diagram at left shows the coolant pressure as a function of the hole
diameter. The higher the coolant pressure, the better the drilling result.
Tool life and hole quality improve with increased coolant fl ow.
necessary coolant pressure (bar) (1 psi = .068948 bar)
Drilling on Inclined Surfaces
When drilling on inclined or curved surfaces, use a 50% lower feed than
the standard value. After the drill margins are fully engaged in the workpiece,
increase the feed to the standard value (100%). Premachining is required
on surfaces with inclination greater than 3°.
favourable values
coolant pressure too low
hole diameter d1 [mm]
TOP DRILL M1 • UP(M) • WU25PD ™ • Speed and Feed Chart • Metric
Cutting Speed — vc
Recommended Feed Rate
Range — m/min
P
M
K
Material
Group min Starting
Value max Tool Diameter
(mm) 8,0 10,0 12,0 14,0 16,0 20,0 25,0
1 90 125 170 mm/r 0,11–0,20 0,13–0,25 0,14–0,31 0,17–0,39 0,19–0,45 0,25–0,48 0,30–0,52
2 105 140 180 mm/r 0,11–0,28 0,12–0,35 0,16–0,37 0,21–0,46 0,23–0,46 0,28–0,50 0,30–0,52
3 50 75 100 mm/r 0,11–0,28 0,12–0,35 0,16–0,37 0,21–0,46 0,23–0,46 0,28–0,50 0,30–0,52
4 50 75 100 mm/r 0,11–0,28 0,12–0,35 0,16–0,37 0,17–0,36 0,19–0,45 0,22–0,48 0,25–0,50
5 50 65 80 mm/r 0,10–0,20 0,10–0,23 0,10–0,25 0,14–0,29 0,16–0,32 0,18–0,36 0,22–0,42
6 50 65 80 mm/r 0,10–0,20 0,10–0,23 0,10–0,25 0,14–0,29 0,16–0,32 0,18–0,36 0,22–0,42
1 40 80 110 mm/r 0,06–0,22 0,08–0,23 0,09–0 ,24 0,10–0,25 0,11–0,26 0,13–0,28 0,13–0,32
2 35 55 75 mm/r 0,06–0,22 0,08–0,23 0,09–0,24 0,10–0,25 0,11–0,26 0,13–0,28 0,13–0,32
3 20 35 50 mm/r 0,06–0,22 0,08–0,23 0,09–0,24 0,10–0,25 0,11–0,26 0,13–0,28 0,13–0,32
1 60 95 170 mm/r 0,15–0,29 0,16–0,32 0,17–0,35 0,21–0,42 0,25–0,48 0,28–0,52 0,32–0,56
2 60 75 90 mm/r 0,15–0,29 0,16–0,30 0,17–0,33 0,21–0,41 0,25–0,48 0,28–0,52 0,32–0,56
3 40 65 90 mm/r 0,16–0,30 0,17–0,33 0,18–0,36 0,20–0,41 0,21–0,44 0,23–0,48 0,25–0,50
U20
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NOTE: Through coolant recommended for greater than 3 x D applications.