Standard Values For Speeds With Hss - Eco - Twist Drills; Drill Chuck; Dismounting The Quick Action Drill Chuck - Optimum OPTIdrill B 17Pro basic Betriebsanleitung

4.4 Standard values for speeds with HSS – Eco – twist drills
Material
Steel, unalloyed,
2
up to 600 N/mm
Mild steel, alloyed, tempered,
2
up to 900N/mm
Mild steel, alloyed, tempered,
2
up to 1200 N/mm
Stainless steels up to 900 N/
2
mm
e.g. X5CrNi18 10

The above data are standard values. In some cases it may be advantageous to increase or
decrease these values.

A cooling or lubricating agent should be used when drilling.

For stainless materials (e.g. VA – or NIRO steel sheets) do not centre, as this will result in
the material compacting and the drill bit rapidly becoming blunt.

The workpieces need to be tensed inflexibly and stably (vice, screw clamp).
4.5

Drill chuck

ATTENTION!
Make sure that the clamped tool is firmly and correctly fitted.
4.5.1

Dismounting the quick action drill chuck

The drill chuck and the taper mandrel are
loosened from the drill spindle by means of
a drill drift.
WARNING!
Only disassemble the quick-action drill chuck if the drilling machine is disconnected
from the electrical supply.

Disconnect the machine from the electrical supply.

Move the drill sleeve down.

Turn the drilling spindle until the openings of the sleeve and of the drilling spindle are super-
imposed.

Loosen the taper mandrel of the drill chuck with the help of a drill drift.
Operation
Version 1.0 2019-01-17
Drill diameter
2 3 4 5
1)
n 5600 3550 2800 2240
2)
f 0.04 0.063 0.08 0.10
n 3150 2000 1600 1250
f 0.032 0.05 0.063 0.08
n 2500 1600 1250 1000
f" 0.032 0.04 0.05 0.063
n 2000 1250 1000 800
f 0.032 0.05 0.063 0.08
1): Speed [n] in rpm
2): Feed [f] in mm/rev
3): Cooling: E = Emulsion; oil = cutting oil
Upper part of quick-
action drill chuck
Bottom part of
quick-action drill
Translation of the original instructions
OPTIMUM
M A S C H I N E N - G E R M A N Y
6 7 8 9
2000 1600 1400 1250
0.125 0.125 0.16 0.16
1000 900 800 710
0.10 0.10 0.125 0.125
800 710 630 560
0.08 0.10 0.10 0.125 0.125
630 500 500 400
0.10 0.10 0.125 0.125
Drill sleeve
Drill drift
chuck
Img.4-1:
Cooling
3)
10
1120
E
0.20
630
E/oil
0.16
500
Oil
400
Oil
0.16
B17Pro basic
Page 53
®
GB