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 3.6 out of 5 by 8 reviewers.
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
Rated 5 out of 5 by Compact, moderate power A bag would've been nice like what's included with the corded model but the convenience of a grinder this compact and cordless is really nice. It's not as powerful as a corded model but it will push through what you throw at it as long as it's not overloaded. Standard battery lasts 15-25 minutes constant load. November 24, 2014
Rated 4 out of 5 by Great tool to have This grinder has plenty of power and has saved me many times. I use this tool mostly for fabricating and installing stainless steel equipment. The only problem I have with it is the switch placement. I would say this is a must have tool. November 24, 2014
Rated 5 out of 5 by Good grinder to have Grinder starts slow, must be so as not to kick out overload. After that it works great. Is not super powerful, and will not replace your corded grinder, but great for the small quick jobs. Also has a locking trigger, which is a nice touch. As powerful as any of the other cordless grinders out there. November 27, 2013
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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
1 year, 9 months ago
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Bloomingdale, NJ, USA
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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
1 year, 9 months ago
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Answer: 
I believe there's an a at the end of the #'s.
9 months ago
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Oklahoma, United States
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1 year, 1 month ago
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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
1 year, 1 month ago
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Answer: 
Yes but has wider wheel
9 months ago
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Illinois, United States
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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?
1 year, 7 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.

Thank you
RIDGID
1 year, 7 months ago
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