WEN 4210 10 Variable Speed Drill Press - Manual (Page 18)

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Operation
(continued)
Mechanical variable speed (Fig. 18)
This is a mechanical variable speed drill press. To increase or
decrease the speed when operating, raise or lower the speed
handle (1).
Use the following table to determine the recommended speed
for the drill size you are using and the type of material you are
to drill. While drilling, check the speed on the digital speed
readout (2) located at the front of the drill press.
Warning: Do not change speed without turn on the machine.
Recommended speed for drill bit size and materials
SPEED WOOD ALUMINUM / ZINC / BRASS IRON / STEEL
RANGE Drill bit size Drill bit size Drill bit size
(RPM) inches mm inches mm inches mm
2000–3100 3/8 9.5 7/32 5.6 3/32 2.4
1400–2000 5/8 16.0 11/32 8.75 5/32 4.0
1000–1400 7/8 22.0 15/32 12.0 1/4 6.4
800–1000 1 1/4 31.75 11/16 17.5 3/8 9.5
530–800 1 5/8 41.4 3/4 19.0 5/8 16.0
2
1
Fig. 18