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DEWALT DW505K 7.8 Amp 1/2-Inch Hammer Drill

3.0 out of 5 stars 12 customer reviews

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  • 7.8 Amp motor provides high performance and overload protection
  • High/low gear for high speed drilling, or high toque applications
  • Dual mode: hammerdrill/drill for wood, steel or masonry applications
  • Lightweight design for easy use and handling in a variety of orientations
  • Two-finger, rubber trigger for increased comfort 360 degree side handle with depth rod offers greater control, versatility, and increased depth accuracy
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Technical Details

  • lightweight

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This item: DEWALT DW505K 7.8 Amp 1/2-Inch Hammer Drill
Customer Rating 3 out of 5 stars (12) 4 out of 5 stars (128) 4 out of 5 stars (44) 4 out of 5 stars (189)
Price $91.99 $139.00 $61.45 $89.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Thakang Amazon.com ToolandEquipSales CPO Outlets
Voltage 120 Volts 120 Volts 110 Volts 120 Volts
Power Source corded-electric corded-electric corded-electric corded-electric
Batteries Required N N N N
Battery Cell Composition Information not provided Information not provided Information not provided Information not provided
Item Weight 9.5 pounds 3.66 pounds 5.4 pounds 5.3 pounds
Dimensions 4.8 inches x 19.3 inches x 12.06 inches 4.44 inches x 13.5 inches x 16.06 inches 2.95 inches x 12.24 inches x 10.12 inches 3 inches x 12 inches x 10.25 inches
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Product Description

Amazon.com

The DeWalt DW505K 7.8-amp 1/2-inch hammer drill comes with a 7.8-amp motor for high-performance and overload protection. A high/low speed setting is included for high-speed drilling or high torque applications and for precise hole placement on work surface. A dual mode (hammerdrill and drill) is included for working wood, steel, and masonry applications. Designed for less user fatigue, this hammerdrill comes with a lightweight design and a two-finger trigger for increased comfort. Other features include a 360-degree side handle with a depth rod for greater control and increased depth accuracy. Measuring 13 inches long and weighing 4.8 pounds, the DW505K comes with a 360-degree side handle, a depth rod, a chuck key with older, and a heavy-duty kit box.

From the Manufacturer

DEWALT DW505K 7.8 amp 1/2-inch Hammer drill

Product Information

Technical Details

Part Number DW505K
Item Weight 9.5 pounds
Product Dimensions 19.3 x 12.1 x 4.8 inches
California residents Click here for Proposition 65 warning
Item model number DW505K
Size 0.5
Power Source corded-electric
Voltage 120 volts
Item Package Quantity 1
Special Features lightweight
Included Components bare-tool
Batteries Included? No
Batteries Required? No
Warranty Description 1 Year Full Warranty

Additional Information

ASIN B00004RHBB
Customer Reviews
3.0 out of 5 stars 12 customer reviews

3.0 out of 5 stars
Best Sellers Rank #554,494 in Home Improvements (See top 100)
#58 in Home Improvement > Power & Hand Tools > Power Tools > Concrete Tools > Demolition Drills & Hammers > Demolition Drills
#371 in Home Improvement > Power & Hand Tools > Power Tools > Concrete Tools > Demolition Drills & Hammers > Hammer Drills
#23,812 in Home Improvement > Contractor Supply
Shipping Weight 9.5 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available February 24, 2000

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

I purchased this particular model of Hammer Drill based upon the fact that I owned several other tools of the Dewalt Line. All of the Dewalt tools that I previously owned are of high quality, durable, and more than adequately get the job done. This hammer drill, though, I found to be an exception to the rule! While using it to drill holes in a concrete footing to install anchor bolts, I noticed that it was generating a tremendous amount of heat. It did not take more than a couple of minutes of use to determine that it would soon overheat if I did not use it in short time intervals. I was not applying any excessive pressure on the tool, either, and was allowing the weight of the tool itself and firm gripping pressure to be the determining factor in the depth and speed of drilling. A friend of mine had the same model and had the same result. Anyone know what an electrical motor smells like, when it is on the verge of burning up? The thing still works, and I have used it as needed for the past couple of years, but I think the "wanna-be" owner of a good hammer drill is better off looking at another brand.
Handy Dan
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I have had my 505 for about 3 years now and have not had any problems with mine. Most people don't use hammer drills properly and that's why this one has had a bad rep on Amazon.com. Hammer drills are more for smaller holes in concrete and brick and the occasional large hole. The largest hole I think I have ever drilled with mine is 5/16" and the drill will drill these all day long. If you want to drill larger holes in masonry,or want a drill that will do whatever you ask of it, get a rotary hammer. They are designed for more abuse and have a larger capacity.
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As a professional home remodeler, I have owned just about every brand of tool out there. The majority of my power tools are Makita and my nail guns are Senco. I own and love the Dewalt 12" compound miter saw and when looking for a 1/2" corded hammer-drill I bought the Dewalt. BIG MISTAKE ! The first one I bought smoked itself after about 15 minutes of moderate use. I brought it back to the dealer and Dewalt replaced it under warranty. I used the replacement drill about three or four times drilling 1/2" anchor bolt holes with no problem. Yesterday, I switched the drill from hammer to straight drilling and the twist lever located near the chuck fell out of the drill along with the pins! The engineers at Dewalt need to take a serious look at this drill's design and quality control. If you are buying a new hammer-drill, this IS NOT the one to buy! I have since bought the Milwaukie 1/2" hammer-drill kit and I am very happy with the quality and construction.
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By A Customer on December 16, 2002
I have use this drill for brick, masonry, concrete and even hard field stone. It does great as long as it is used properly.
What this means:
Use it in moderation (as with any power tool that heats up)
Do not use a dull bit. This will generate excessive heat.
It should'nt take 15 minutes to drill a hole.
Don't mistakingly use the regular drill feature as a hammer drill. (I have seen this happen with inexperienced users)
Use the hammer feature to your advantage. Put a little force behind it. That is what the side handle is for.
I am not saying this is the best hammer drill out there but it does cost as much either. Don't expect this drill to make large holes for huge anchor bolts or even pipes. Common sense says, if you need to drill a bigger hole get a bigger tool.
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By A Customer on July 7, 2003
The 3rd time I used this drill for a real project it went snap and the drill bit does not turn anymore. It is out of warranty so now I have to pay to get it fixed. I think I will buy a Milwaukee before I pay half the price to have it repaired. To be fare I was drilling 3/4" holes in 50 year old concrete 2" deep and it broke on the 5th one.
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Being one of a dozen Dewalt tools I've owned, this drill is the first to have failed. The motor sparked its last breath today, before venting a wisp of smoke and then going quiet.

The motor overheated easily under a load (quite the smell) and was obviously underrated for many of the jobs I used it for. I wouldn't recommend it for drilling holes greater than 1/4" diameter.

Also, the forward/reverse switch broke off during the first week of operation which made changing direction very inconvenient from that point on.

Now granted, I mixed thinset w/ this tool and drilled a whole bunch of holes with it. Still, given the quality of most of Dewalt's other tools I expected more. Now I've got to buy another (non-Dewalt) hammer drill.
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