DeWalt DW239 Review

DeWalt DW239

DeWalt DW239 DeWalt
DW239

1/2" (13mm) Keyed
Power Drill
1/2" Keyed Chuck
Discontinued
Power

7.8

Amps
Speed

850

Max RPM
Weight

4.2

Pounds
Capacity

1.5

In. Wood Bit
Warranty

3

Year

Ratings Guide   Best Better Good FairPoor



KEY STRENGTHS & WEAKNESSES
POWER The DW239 is 9% more powerful than average and ranks in the top 40% of power drills for amperage. The motor carries 0.6 amps more electrical current load than the average 7.2 amp corded drill.
SPEED This DeWalt drill has about average speed with a max RPM comparable with standard power drills. The average corded drill in this class runs at speeds up to 1090 RPM.  
WEIGHT It is 9% lighter than average and ranks in the top 40% of power drills for lower weight. It weighs 0.4 lbs less than the average 4.6 lb corded drill and should decrease operator fatigue.
CAPACITY This power drill has a higher than average wood bit capacity and ranks in the top class of corded drills. It can drill a hole in wood that is larger than the average 1-1/4" hole capacity for corded drills.
WARRANTY DeWalt's 3-year limited tool warranty is a little longer than average for the drill industry where the standard is about 2-3 years. Longer warranties can often indicate improved durability with fewer repairs.


DeWalt DW239 Cordless Drill


PERFORMANCE RATINGS
Power 7.8 amps - The DW239 is 9% more powerful than average and ranks in the top 40% of power drills for amperage. The motor carries 0.6 amps more electrical current load than the average 7.2 amp corded drill.
Capacity
Wood
1.5" Hole - This power drill has a higher than average wood bit capacity and ranks in the top class of corded drills. It can drill a hole in wood that is larger than the average 1-1/4" hole capacity for corded drills.
Speed 0-850 RPM - This DeWalt drill has about average speed with a max RPM comparable with standard power drills. The average corded drill in this class runs at speeds up to 1090 RPM.  
Capacity
Steel
0.5" Hole - This power drill has a higher than average bit capacity for steel and ranks in the top 40% of corded drills. It can drill a hole in steel that is 1/8" larger than the average 3/8" hole capacity for corded drills.
Power
Ratio
1.9 P/W - The DeWalt DW239 has an 19% higher than average power-to-weight ratio and ranks in the top 40% of efficiently designed power drills. The P/W ratio is 0.3 higher than the 1.6 average ratio for corded drills.
Gear
Reduction
Double - Gear systems with double reduction generally provide more torque for a given amperage. They operate more efficiently at lower speeds than single gear systems, which extends the life of the drill.


DURABILITY RATINGS
Gear
Housing
All-Metal - The DeWalt DW239 is manufactured with an all-metal gear housing that protects the transmission and prevents the drill from cracking when dropped onto hard surfaces such as concrete.
Gears All-Metal - The transmission contains all-metal gears that provide superior durability compared to nylon gears found in some drills. Gears spin at high RPMs and are susceptible to material break-down.
Warranty 3-Year - DeWalt's 3-year limited tool warranty is a little longer than average for the drill industry where the standard is about 2-3 years. Longer warranties can often indicate improved durability with fewer repairs.


CONVENIENCE RATINGS
Weight 4.2 lbs - It is 9% lighter than average and ranks in the top 40% of power drills for lower weight. It weighs 0.4 lbs less than the average 4.6 lb corded drill and should decrease operator fatigue.
Length Cordless drill length is a personal preference, but shorter is generally better to help you in close quarters such as under a sink, or drilling in-between studs. Torque is harder to handle if the drill is too short though.  
Spindle
Lock
No Spindle Lock - This power drill has a keyed chuck with superior gripping ability. Spindle lock is only applicable to keyless chucks and allows the operator to change drill bits with just one hand.  
Belt
Hook
No Belt Hook - There is no provision to hang the drill on your belt and free-up both hands to perform other tasks. You may be able to purchase a separate belt clip that can be attached to the drill.  
Side
Handle
Side Handle Included - Higher torque levels can cause injury if a bit suddenly binds or the drill slips. A side handle is essential to handle more powerful drills and provides additional stability and control.
VSR VSR - Most cordless drills are equipped with variable speed capability that can be controlled with simple trigger pressure. Reverse is usually performed with the push of a side-to-side button.


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