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Harbor Freight 9.6 V Drill

These are the specs for the Harbor Freight Drill Master 9.6 V cordless drill models 45935 and 45936.  The drill has a neutrally timed Mabuchi RS-550 HS motor and a 36:1 planetary gearbox and comes with a 9.6 V 1300 mAh battery pack.  The entire drill including battery weighs 2.8 lb.  Motor and gearbox with chuck removed weigh approximately 1 lb.  The motor body is 57 mm in length and 37.5 mm in diameter.

 

Specifications for rotation in both directions:

Motor only performance.

Typical system performance.

Voltage:

9.6 V

Angular-velocity constant:

55.6 rpm/V

Torque constant:

24.3 ozfin/A

Terminal resistance:

0.116 ohm

No-load current:

2.55 A

Peak efficiency:

68 %

Power source resistance:

0 ohm

0.116 ohm

Peak power:

0.25 hp

0.117 hp

No-load angular velocity:

517 rpm

501 rpm

Stall current:

82.8 A

41.4 A

Stall torque:

1950 ozfin

944 ozfin

Explanation of specifications.

 

 

 

 

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Page last modified 06/05/07.