Developed Torque in C12 Drill ???

[extiger]

The literature which accompanied my new C12 drill says the machine will develop 260 inch pounds of torque. In order to have a standard of comparison, how does that number compare to ---say--- a corded Milwaukee 1/2-inch drill? (neither Milwaukee or DeWalt publish torque specifications on their website).

I am curious because the 3-Phase AC current in the Festool is so unique in a battery-operated machine. Other than reducing the weight and prolonged battery charge , why should anyone care?

Gary Curtis

 

[Barry]

Comparing a heavy duty corded drill to any cordless just isn't fair.  Dewalt used to claim around 400 in lbs of force for most of their 18v drills before switching the UWO measure.  Don't ask I don't know what the hell a uwo is.

The real benefit of 3 phase motor is that it is brushless, removing a heavy wear item.  You have to understand that 3 phase motors are the standard for VERY  heavy duty motors.  The actually theory behind it is too long to get into here but lets just put it this way 3 phase better than 1 phase better than dc.

Barry

 

[nickao]

The theory behind actually is not that difficult to understand. Wikipedia sums it up well:

3 phase

I think there may be confusion as I believe the 3 phase we are talking about here is DC:

look here:

3phase discussion for DC

"A DC brushless motor can indeed be 3-phase. In fact, 3-phase is the most common. This refers to the number of electrical phase windings on the motor. It is switched via a 3-phase power "bridge" from a DC voltage supply." quote taken from link

Here is a nice link for brushless DC motors:

brushless DC

 

[extiger]

So, no one has a torque number of another drill for comparison purposes?

 

[Forrest Anderson]

So, no one has a torque number of another drill for comparison purposes?

Although the US Milwaukee website doesn't seem to have the torque figures easily available, their UK website does list them. Unfortunately the figures are in Newton metres (Nm) rather than inch pounds, and the model numbers are different, but it should give you the general idea. To convert from one measurement system to another, seehttp://www.onlineconversion.com/torque.htm

Milwaukee mains-powered ToolsDrills/Percussion DrillsDrills 6 - 10 mm     

HDE 10 RQX
Power input  725 W
Drill dia. in steel / aluminium / wood  10 / 13 / 30 mm
Drilling speed (full-load)  0 - 795 rpm
Tool reception  1 - 10 mm
Static stalling torque  63 Nm  

HDE 6 RQ
Power input  725 W
Drill dia. in steel / aluminium / wood  6 / 8 / 16 mm
Drilling speed (full-load)  0 - 2680 rpm
Tool reception  1 - 10 mm
Static stalling torque  30 Nm  

Milwaukee mains-powered ToolsDrills/Percussion DrillsDrills 13 - 16 mm 

B2E 16 RLD
Power input  900 W
Drill dia. in steel / aluminium / wood  16 / 20 / 40 mm
Drilling speed (full-load)  100 - 450 / 300 - 1000 rpm
Tool reception  3-16 mm
Static stalling torque  88 / 58 Nm 1./2. gear  

HD2E 13 R
Power input  705 W
Drill dia. in steel / aluminium / wood  13 / 16 / 40 mm
Full-load speed 1st / 2nd gear  0 - 730 / 0 - 1540 rpm
Tool reception  1,5-13 mm
Static stalling torque  60 / 35 Nm 1./2. gear  

HDE 13 RQD
Power input  825 W
Drill dia. in steel / aluminium / wood  13 / 20 / 38 mm
Drilling speed (full-load)  0 - 355 rpm
Tool reception  1,5-13 mm
Static stalling torque  101 Nm  

HDE 13 RQX
Power input  950 W
Drill dia. in steel / aluminium / wood  13 / 20 / 38 mm
Drilling speed (full-load)  0 - 525 rpm
Tool reception  1,5-13 mm
Static stalling torque  94 Nm

Here are the specs from the Milwaukee UK 12v cordless drill/screwdriver range:

PDD 12 X
Battery pack voltage / capacity  12 / 2,0-3,0 V/Ah
No-load speed 1st / 2nd gear  0-400 / 0-1.300 rpm
Keyless chuck  1,5 / 13 mm
Drilling capacity in steel / wood  13 / 34 mm
Wood screws to  8 mm
Max. torque - soft joint / hard joint  22 / 50 Nm

LokTor S 12 PX
Battery pack voltage / capacity  12 / 2.0 NiCd V / Ah
No-load speed 1st / 2nd gear  0-420 / 0-1300 rpm
Drilling capacity in steel / wood / stone  13 / 34 / - mm
Max. torque - soft joint / hard joint  22 / 50 Nm
Keyless chuck  1.5 - 13 mm
Wood screws to  10 mm

LokTor S 12 TXC
Battery pack voltage / capacity  12 / 3.0 NiMH V / Ah
No-load speed 1st / 2nd gear  0-420 / 0-1300 rpm
Drilling capacity in steel / wood / stone  13 / 34 / - mm
Max. torque - soft joint / hard joint  22 / 50 Nm
Keyless chuck  1.5 - 13 mm
Wood screws to  10 mm
 
PLD 12 X
Battery pack voltage / capacity  12 / 2,0 V/Ah
No-load speed 1st / 2nd gear  0-380 / 0-1.250 rpm
Keyless chuck  1,5 / 13 mm
Drilling capacity in steel / wood  13 / 31 mm
Wood screws to  8 mm
Max. torque - soft joint / hard joint  18 / 38 Nm

For Festool, the figures for the C12 and TDK are:

Cordless drill C12 3.0 Ah Set
Battery voltage:  12 V
Idling speed:  setting 1: 0 - 450 rpm, setting 2: 0 - 1500 rpm
Max drill diameter:  in steel: 9/16" (14 mm), in wood: 1" (25 mm)
Torque setting range:  17.7 - 61.95 in. lbs. (2-7 Nm)
Max torque:  in wood: 159.3 in. lbs. (18 Nm), in steel: 265.5 in. lbs. (30 Nm)
Chuck capacity:  1/2" (13 mm)
Weight:  3 lbs. 13.4 ounces

Cordless drill TDK 12 CE
Battery voltage:  12 V
No-load speed:  0 - 430 rpm (low gear), 0 - 1400 rpm (high gear)
Chuck capacity:  1/2" (13 mm)
Max drill diameter:  in steel: 9/16" (14 mm), in wood: 1" (25 mm)
Torque setting range:  4.5 - 62 in. lbs. (0.5 - 7 Nm)
Max torque:  in wood: 175 in. lbs. (20 Nm), in steel: 250 in. lbs. (28 Nm)
Weight:  4.4 lbs. (2 kg)

Cordless drill TDK 15.6 CE Set
Battery voltage:  15.6 V
No-load speed:  0 - 450 rpm (low gear), 0 - 1500 rpm (high gear)
Chuck capacity:  1/2" (13 mm)
Max drill diameter:  in steel: 5/8" (16 mm), in wood: 1 3/8" (35 mm)
Torque setting range:  4.5 - 62 in. lbs. (0.5 - 7 Nm)
Max torque:  in wood: 220 in. lbs. (25 Nm), in steel: 320 in. lbs. (28 Nm)
Weight:  5 lbs (2.3 kg)

Be aware that manufacturers may have different methods of measuring torque, and therefore comparing figures from one manufacturer to another can sometimes be a bit deceptive.

Forrest