Black and Decker DR550 Review

Black and Decker DR550

Black and Decker DR550 Black and Decker
DR550

7.0 Amp 1/2" VSR
Power Drill
1/2" Keyed Chuck
Price Level: $$
Power

7

Amps
Speed

800

Max RPM
Weight

5.5

Pounds
Capacity

1.5

In. Wood Bit
Warranty

2

Year

Ratings Guide   Best Better Good FairPoor



KEY STRENGTHS & WEAKNESSES
POWER The DR550 generates about average power when compared to other corded power drills. The average power drill motor carries an electrical current load of about 7.2 amps.  
SPEED This Black and Decker drill is 27% slower than average and ranks in the bottom 40% of power drills for maximum RPM. It can only run at top speeds that are 290 RPM less than the average 1090 RPM corded drill.  
WEIGHT It is 20% heavier than average and ranks in the bottom 20% of power drills for higher weight. It weighs 0.9 lbs more than the average 4.6 lb corded drill and may increase 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 Black and Decker's 2-year limited tool warranty is about average for the drill industry where the standard is 2-3 years. Longer warranties can often indicate improved durability with fewer repairs.  


Black and Decker DR550 Cordless Drill


PERFORMANCE RATINGS
Power 7 amps - The DR550 generates about average power when compared to other corded power drills. The average power drill motor carries an electrical current load of about 7.2 amps.  
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 0-800 RPM - This Black and Decker drill is 27% slower than average and ranks in the bottom 40% of power drills for maximum RPM. It can only run at top speeds that are 290 RPM less than the average 1090 RPM corded drill.  
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
1.3 P/W - The Black and Decker DR550 power-to-weight ratio is 19% lower than average and ranks in the bottom 20% of corded drills. The P/W ratio is 0.3 lower than the 1.6 average ratio for power drills.  
Gear
Reduction
Triple - Gear systems with triple reduction generally provide the most torque for a given amperage. They operate more efficiently at lower speeds and the gears receive less wear, which extends the life of the drill.


DURABILITY RATINGS
Gear
Housing
All-Metal - The Black and Decker DR550 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 Non-Metal Parts - Some of the transmission components are made of non-metal materials that are more susceptible to failure. Gears spin at high RPMs and experience large rotational forces.  
Warranty 2-Year - Black and Decker's 2-year limited tool warranty is about average for the drill industry where the standard is 2-3 years. Longer warranties can often indicate improved durability with fewer repairs.  


CONVENIENCE RATINGS
Weight 5.5 lbs - It is 20% heavier than average and ranks in the bottom 20% of power drills for higher weight. It weighs 0.9 lbs more than the average 4.6 lb corded drill and may increase 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
Integrated Belt Hook - Includes a belt hook or clip that allows you to temporarily hang the drill from your belt or a ladder while you're performing other job tasks. Helps prevent dropped and damaged drills.
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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