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Ratings
Category: Tools & Home Improvement
Brand: DEWALT
Model: DC820B
Availability: FREE SHIPPING (USA)
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DEWALT DC820B Review
DEWALT DC820B Review by psk1
Great product, had been searching the net for a dewalt 18 volt impact, best price on a great tool. Would highly recommend to anyone needing a cordless impact
DEWALT DC820B Review by Gordon "gfc62" (Washington, DC)
This is a useful tool with more power than you'd expect for its small size.
It's about 1.5 times the size and weight of my 1/4" hex drive impact tool but seems to have 4x the power. This obviously isn't going to out drive an air powered impact wrench but has more than enough power to handle lug nuts.
The only time this tool failed to impress me was removing large diameter stainless steel fasteners with seriously galled threads (an antenna mount that had been on our office roof for 10+ years.) The DC820B could break the seized 3/8 bolts but didn't have the power to break the 1/2" bolts. It tried and tried but couldn't quite get the job done. I could feel a slight flexing of the tool in my grip that probably robbed torque from the job at hand. To be fair, I had removed more than 50 bolts before attempting to free the seized bolts and didn't take the time to replace the battery so this isn't conclusive, your results may be better.
The only real design complaint I have about this tool is the socket retention mechanism. Instead of the spring loaded ball or hog ring systems used on most 1/2 air impact tools this one has a spring loaded "detent pin retention system". On my tool this requires using a small screwdriver or similar tool to push in the retention pin every time you want to change a socket. It was a hassle at first but now I just leave a short impact extension on the tool and change sockets on the extension.
I mention this since when looking at the parts diagram it appears that Dewalt has different models that use the hog ring system. One of those might be a better choice if you change sockets frequently.
Like one or two other reviewers mine emits a slight burning smell that seems to have gotten less noticeable the longer I use the tool. I have some other Dewalt tools that had the same problem but none have died (so far at least)
DEWALT DC820B Review by Edgar J. Puckett (MO.)
I am developing arthritis in my hands and shoulders, and this really makes things handy, especially if I am not working in my shop. My hobby is old farm machinery, not just to look at, but to use some. This is a great wrench for use in disassembly and reassembly so long as you pay attention to what you are doing. The variable speed control makes it easy to control the amount of force applied, so it can be used on smaller bolts without breaking them. The one shortcoming of both this tool and my larger cordless Dewalt is the difficulty of changing sockets if you turn them so the locking pin drops into the hole in the socket. To get around this I cut off a flat head roofing mail just long enough to reach through a socket and push the pin in to carry with that tool, and when I got tired of that I used my Dremel to round off the end of the pin just a little , so it will still hold the socket tight but and be pulled off with a little wiggling.
More Reviews...
Bare-Tool DEWALT DC820B 1/2-Inch 18-Volt Cordless Impact Wrench (Tool Only, No Battery):: Description
the Dewalt DC820B 1/2-inch (13 mm) 18-volt Cordless Impact Wrench. This compact impact wrench provides its users with first-rate performance and durability along with exceptional ergonomics. This wrench features a frameless motor, a durable magnesium gear case and all metal transmission for extended durability, and the brushes are replaceable for increased serviceability. The compact 5-3/4-inch size and 2.2-pound weight (tool only) allow access into tighter areas and reduces user fatigue, and the textured anti-slip comfort grip provides maximum comfort.
Bare-Tool DEWALT DC820B 1/2-Inch 18-Volt Cordless Impact Wrench (Tool Only, No Battery):: Technical Details
- Frameless motor for extended tool durability and life
- 0-2,400 rpm/0-2,700 ipm for faster application speed
- 1,740 in-lbs of torque to perform a wide range of fastening applications
- Replaceable brushes for increased serviceability; Textured anti-slip comfort grip provides maximum comfort
- Compact size and weight allow access into tighter areas and reduces user fatigue
- Item Dimensions: 8 x 7 x 4 inches; 7 pounds
- Brand: DEWALT
- Model: DC820B
- Product Type: Tools & Home Improvement
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