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EY 503B Cordless Drill & Driver
1. 1-hour charging system 
2. Easily converts from straight to pistol form 
3. Multi-stage clutch plus drill position 
4. 2-speed gear box 
5. 1/4” hex drive 
6. Gear lock mechanism for manual tightening 
7. Reversible 
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• Trade Groups 
• Rack/cabinet installers 
• Electricians 
• Industrial manufacturing 
• Work inspectors 
• Service engineers 
• Electronic/Electrical manufacturing 
 
EY503B has a dominant position among small drivers for professional use. It is not a replacement for our other drill/drivers when heavy drilling/driving is required, but it is more comfortable for light installation work. Within electric installations, typical usage involves installing light switches, jacks, various equipment and connections in electric fuse boxes and automatic equipment. In the low range, EY503B has a maximum torque of 30 kg-cm. If more power is needed or to save on the battery, simply release the power switch in which case the machine is automatically locked. You can now use the unit as a manual screwdriver. The torque selection allows you to select a desired torque between 4 and 20 kg-cm, which is important when setting screws in fragile material. In position 6, the machine offers full power. In professional use, EY503B has economical and ergonomic advantages. Driving screws is a lot faster than using manual screwdrivers, whilst operator fatigue is reduced to a minimum.
Technical Data

Charging Time: 1 hour 
Battery Pack: 2.4V Battery pack (EY903) 
Battery Charger: 2.4V 1 hour charger (EY 503B7660) 
Speed at No Load: High/400 rpm Low/200 rpm 
Max. Torque: 0 kg-cm 
Clutch Torque: 4-20 kg-cm multi stage 
Chuck: 1/4” hex drive 
Manual Tightening: Yes 
Weight (incl. battery): 0.4 kg 
Overall Length: Max. 230 mm 
Working Capacity: Wood Screws into Yellow Pine (diam. 3.5x20 mm): approx. 100
Holes in Metal sheet: (1 mm thickness, ~2 mm): approx. 50 
Standard Accessories: Battery pack (EY903), 1 hour charger (EY503B7660)