Model R86040B

Features

  • This RIDGID 18V grinder features a load level LED Indicator-LED illuminates to prevent grinder overload
  • Tool-less guard design- easily rotates guard for optimal grinding position
  • 100-Percentage compatible with all RIDGID 18V slide battery packs
  • 18 volt grinder features hex grip- grip enhancing micro-texture provides superior grip and comfort during extended use
  • Spindle lock- to easily change grinding wheels
  • Auto tool lock-off- to prevent accidental start, if battery is installed while tool is locked on, the tool will not operate
  • Batteries and charger sold separately, this item works with these batteries (AC840083, AC840085, AC840084 and AC46182) and chargers (AC470013 and AC840093)

Specifications

Arbor Size 5/8
Assembled Depth 13.464 in.
Assembled Height 6.614 in.
Assembled Width 5.039 in.
Battery Power Type Lithium Ion
Battery Size Lithium Ion
Battery charge time 30 min.
Certifications and Listings 1-UL Listed
Manufacturer Warranty Lifetime Service Agreement with Registration
Maximum Speed (rpm) 9000
Power Tool Product Type Cordless
Product Depth 17 in.
Product Height 6 in.
Product Weight 4.5 lb.
Product Width 5 in.
Returnable 90-Day
Side Handle Yes
Spindle Lock Yes
Variable Speed No
Voltage (volts) 18V
Wheel Diameter 4.5 in.
Rated 3.5 out of 5 by 11 reviewers.
  • 2016-09-29 T10:14:43.331-05:00
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Rated 3 out of 5 by I like the tool... hate the trigger. I have owned this tool for a little over a month. It was bought for the purpose of cutting 1/8 inch metal plates, chain link fence, grout, tile and all kind of other things. It does shut down if you use too much force but if you pace yourself it cuts fine. The thumb trigger can be difficult to use after an exhausting day. It does eat batteries so plan on getting a pack of 4.0 amp batteries. Overall I'm satisfied and it has definitely become my go to tool. June 21, 2016
Rated 5 out of 5 by Not far behind DeWalt I was very unsure about buying this grinder after seeing the reviews, but I am glad I bought it. I used a 20V Max grinder for a few days cutting steel angles for fire doors. This grinder can actually keep up with the performance of the DeWalt, and I am impressed! I like the gradual startup and LED load indicator, two features which the DeWalt did not have. Overall very impressed and would recommend this tool. April 17, 2016
Rated 1 out of 5 by Does not hold up I have had all Ridgid tools for over 12 years. So I was so happy when they finally came out with a grinder, only to be disappointed, It stopped working the first time I used it. I took it all the way to service center (Pain finding one that will honer Ridgid) they had it a month. I got it back, It worked for a day, then same thing... just quit working! I only used it for cutting off nails or thin steel angle. November 13, 2015
Rated 2 out of 5 by Tool started out good but torque is a let down ! I have 18 different Ridgid tools in electric and battery operated not counting batteries and chargers. The 18v grinder is fine for very light hobby shop work but is a major let down for anything heaver due to low torque. the unit continually kicks out during heavy grinding or light cutting, which I know is not recommended but come on guys. Really ! July 29, 2015
Rated 2 out of 5 by 250 bucks by the time you buy an X4 battery set. I was not happy when it only ran for 7 minutes on the batteries that came with my drill and driver. I like Ridgid because of the lifetime warranty on batteries and products. I bought two X4 batteries on sale for 80 bucks each (20 minute run time with those) and was quite unhappy when they were not under the lifetime service agreement. Uuhg---And the bigger batteries are heavy and awkward. I have used other brands of cordless grinders and liked them better, but you know, once you pick a brand, it makes sense to stick with it. ----this is not my favorite Ridgid product. February 14, 2015
Rated 1 out of 5 by the built in protections keep this tool from doing real work This tool will suck a newly charged battery down so hard and so fast ,that it will cut out and you have to wait for it to reset itself, 5 or 6 times cutting of a piece of 1 inch by 1/4 inch flat bar,which took 7 or 8 minutes. I have 4 batteries , 2 large and 2 small and it does it with all of them. My large drill, reciprocating saw, circular saw will do the same thing if you are working them hard. The grinder is useless for what it is intended , which is cutting or grinding in areas at heights or where corded tools are unwieldy. it is definitely not going to wear out , ever, because you couldn't do enough real work with it to harm it. It is easy to warranty for life if you engineer protections into them that won't let the tool work hard.. I have a dozen rigid cordless tools and I am going to switch to Dewalt ,Milwaukee , or Makita in the near future.. If you make your living with your tools, be warned January 31, 2015
Rated 5 out of 5 by Great Grinder I love this thing. It has the same power as a corded grinder but I can carry it around as needed. December 2, 2014
Rated 5 out of 5 by Amazing Tool I've fallen in love with this Grinder it does exactly what I expected it to do and also lasted longer than I thought it would. Its great in tight places, being cordless is great because usually I just need the grinder for a second to cut a nail or something in a renovation and not having to deal with power strips is great. more time on the job. November 25, 2014
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3 Questions | 5 Answers

Product Q&A

 
 
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2 answers

trying to register

it registers the item as a "jigsaw" and the r86040 model number tells me its invalid
2 years, 10 months ago
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Bloomingdale, NJ, USA
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Answer: 
I believe there's an a at the end of the #'s.
1 year, 10 months ago
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Oklahoma, United States
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Answer: 
Under the Power Tool registration link:

Register the grinder under model R86040B.

The RIDGID "Dashboard" registration system requires the correct product model number to be entered when registering. With individual tools like saws or sanders, you will need to use the base model number for that product from the serial number data plate on the tool. Drill kits and combo-kits use the model number for the kit. Combo-kit items are not to be registered individually, you have to register them under the correct combo-kit model number normally found on the card board carton that the kit came in.

In the "Package model number" field, type in the model number and then click the "choose package" link to go forward to the serial number data page where the submit button will then be accessible.
If you require any further information please contact Customer Support at 866-539-1710.

Thank you
RIDGID
2 years, 10 months ago
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2 years, 2 months ago
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Answer: 
Yes but has wider wheel
1 year, 10 months ago
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Illinois, United States
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Answer: 
Thank you for your interest in RIDGID!

Unfortunately, there is not a corded version of this exact product design. However, RIDGID does produce corded 4-1/2” angle grinders:
https://www.ridgid.com/us/en/four-and-half-inch-angle-grinder

Regards,
RIDGID
2 years, 2 months ago
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Can this tool be used with a masonry (stone, tile, granite) cutoff wheel to trim a 1/4 in. thick stone backsplash? If so, what is the recommended cutoff wheel?
2 years, 8 months ago
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Ohio
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Answer: 
No, the R86040B is a metal grinder , and is designed for use in the grinding of metal. Use on masonry (stone, tile, granite) could damage the tool, as well as voiding its warranty.

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RIDGID
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