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Model #P423KN

Store SKU #1006065881

ONE+ 18V Brushless Cordless 4-1/2 in. Angle Grinder Kit with (1) 1.5 Ah Battery and Charger

$9900
$178.00
Save $79.00 (44%)
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  • Cutter/grinder with lock-on switch and powerful brushless motor
  • Includes: 1.5 Ah Battery, 18V Charger, and Grinder Accessories
  • Over 225 ONE+ Tools – All Work With Any RYOBI ONE+ 18V Battery
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Top Rated
++
Price:
$9900
$178.00
Save $79.00 (44%)

Product Overview

RYOBI introduces the 18V ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder Kit with 1.5 Ah Battery and Charger. The brushless motor in the 4-1/2 in. Angle Grinder provides longer runtime, more power, and longer motor life. The versatile design is perfect for cutting or grinding applications. The 3-position side handle is ideal for optimum hand placement. The included battery and charger are compatible with all RYOBI 18V ONE+ Tools. Best of all, it's a part of the RYOBI ONE+ System of over 225 Cordless Tools that all work on the same battery platform. Backed by the RYOBI 3-Year Manufacturer's Warranty, the 18V ONE+ Brushless 4-1/2 in. Cut-off Tool/Angle Grinder includes a side handle, a spanner wrench, a Type 27 Grinding Wheel, a Type 27 Grinding Guard, a Type 1 Cut-Off Wheel, a Type 1 Cutting Guard Attachment, and an operator's manual.
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: Brushless motor provides longer runtime, more power, and longer motor life
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: Compatible with LITHIUM+ HP batteries for even more performance
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: Versatile design is perfect for cutting or grinding applications
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: Compact design for user control and maneuverability
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: GRIPZONE overmold with microtexture for optimum grip and user comfort
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: 3-position side handle for optimum hand placement
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: On-board storage for spanner wrench
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: Spindle lock for a quick and easy wheel change
  • Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder: Ergonomic design for user comfort during prolonged use
  • Battery: Compact to reduce user fatigue
  • Charger: Compatible with all RYOBI 18V ONE+ Lithium-Ion Batteries
  • Part of the RYOBI 18V ONE+ System of over 225 Cordless Tools
  • 3-year manufacturer's warranty
  • Includes: (1) P423 18V ONE+ Brushless 4-1/2 in. Angle Grinder, (1) side handle, (1) type 27 grinding wheel, (1) type 27 grinding guard, (1) type 1 cut-off wheel, (1) type 1 cutting guard, (1) spanner wrench, (1) P189 18V ONE+ 1.5 Ah Battery, (1) P118B 18V ONE+ Lithium-Ion Charger, and operator's manual
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Info & Guides

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BrandRYOBIRYOBIRYOBIDEWALT
Name7.5 Amp 4.5 in. Corded Angle GrinderONE+ 18V Brushless Cordless 4-1/2 in. Angle Grinder Kit with (1) 1.5 Ah Battery and ChargerONE+ HP 18-Volt Brushless Cordless 4-1/2 in. Angle Grinder Kit with (1) 4.0 Ah Battery and Charger20-Volt MAX Cordless 4-1/2 in. to 5 in. Grinder (Tool Only)
Price
$5497
$9900
$178.00
Save $79.00 (44%)
$12900
$179.00
Save $50.00 (28%)
$12900
Ratings
(416)
(940)
(6)
(6113)
Cordless/ CordedCordedCordlessCordlessCordless
Wheel Diameter (in.)4.54-1/2 in4-1/2 in4.5 in
Power Tool FeaturesAdjustable Handle Position,Lock On Switch,Spindle LockRandom OrbitAdjustable Handle Position,No Tool Wheel ChangeAdjustable Handle Position
Amperage (amps)7.5 A0.0 A0.0 A0 A
Arbor Size5.6-11 UNC05/8 - 11 UNC5/8
Voltage (volts) 18 V18 V20 V
Battery Amp Hours 1.5 Ah4 AhNo Battery
Motor Type BrushlessBrushlessBrushed
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Specifications

Dimensions

Product Depth (in.)
10 in
Product Height (in.)
7.62 in
Product Width (in.)
10 in
Wheel Diameter (in.)
4-1/2 in

Details

Amperage (amps)
0.0 A
Arbor Size
0
Batteries Included
Yes
Battery Amp Hours
1.5 Ah
Battery Power Type
Lithium Ion
Battery Size
18-volt
Battery/Charger
1 Battery Included
Battery/Charger
(1) 1.5 Ah Battery Included
Charger Included
Charger Not Included
Color Family
Green
Condition
New
Cordless Tool Type
Angle Grinder
Cordless/ Corded
Cordless
Electronic Speed Control
Yes
Grinder Switch Type
Sliding Switch
Included
Buffing Pads
Maximum Speed (rpm)
2500
Motor Type
Brushless
Number of Total Batteries Included
1
Power Tool Features
Random Orbit
Product Weight (lb.)
4.3 lb
Returnable
90-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18 V

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
3 Year Warranty

Questions & Answers

Typical questions asked about products:

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Customer Reviews

  • 4.2
    out of 941 reviews
  • 79% recommend this product
Filter by:
Showing 1-30 of 941 reviews
Great grinder that needs a bigger battery
The grinder is great and exactly what I wanted but it really should have came with a larger battery. That small of a battery is almost a joke for something that takes this much power. It spins faster and for longer and just has more power with my 3.0 or 4.0 batteries.
by
  • Verified Purchase
Battery won't charge
One battery out of 4 won't charge on any charger. It's junk.
by
    • Recommended
    4 people found this helpful
    Picked up the RYOBI 18-Volt ONE+ Cordless Brushless 4-1/2 in....
    Picked up the RYOBI 18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder to add to my ever-growing RYOBI ONE+ tool collection after having an oil tank removed from my basement. After removal, we had steel pipe legs remaining sticking up from our poured concrete floor that we wanted to cut off and grind down. I went back and forth choosing to go with this one or a more powerful wired version. Ultimately, I chose this route since I already had the battery and thinking about the future uses down the road. This grinder cut through the piping like butter. Very powerful for a handheld, battery powered power tool. Highly recommend!
    by
    • Verified Purchase
    Problem Solved
    I’ve only used it once, but seems like it’s going to be a good addition to the tool box. Several reviewers complained that the disk wrench wouldn’t stay in the handle storage slot. It’s true, but I solved this by putting one wrap of electrical tape at the base of the “C”. Stays put fine, now.
    by
      • Recommended
      9 people found this helpful
      Lightweight, powerful for a cordless, super handy!
      Lightweight, powerful for a cordless, super handy!
      by
      • Verified Purchase
      • Recommended
      1 person found this helpful
      It's a pretty okay grinder. I've had it for a couple months and used it on some small projects an...
      It's a pretty okay grinder. I've had it for a couple months and used it on some small projects and attempted to use it on a larger project. I'd buy it if you need quick cuts or a quick grind, and you're too lazy to dig out the corded one and extension cord like me. I would have a host of large batteries or a corded grinder if you're working on a serious project though. Compared to a corded grinder, the value is not there. You'll be changing batteries constantly. That said, I think this still has a place ALONGSIDE a corded grinder, but I think paying $100 for a grinder that can only run for a few minutes is ridiculous. Only buy this if you're getting batteries with it as part of a promo. Pros: - Pretty easy to change wheels - No more cords! - Easy to change the handle position - Feels well built Cons: - It's pretty hefty in hand and kind of awkward coming from a 4.5" corded grinder. - Wrench storage in the handle seemed like a great idea, but the wrench just falls out no matter what. - I would not buy it as a bare tool when you could buy plenty of other corded grinders and extension cords for the same amount. It IS a good value if you are getting batteries as part of a promotion though. - Runtime is abysmal I have a bunch of 18V batteries, so the runtime wasn't too big of a concern for me, but I was cleaning off old paint with a wire cup, and the 3Ah HP+ battery lasted 2.25 minutes (used a stopwatch). It was kind of hilarious. Definitely use larger batteries for grinding. I ended up finishing the job with my corded $10 HF grinder. I didn't notice any battery issues when cutting through 1/2" rebar (~20 cuts), but I forgot to check the levels.
      by
        • Recommended
        10 people found this helpful
        Missing grinder !!!!
        I ordered (Model P166-P423) but recieved only P166 , and not P423 (the Angle grinder).
        by
          2 people found this helpful
          used for about 15 minutes straight per 3ah battery. plenty...
          used for about 15 minutes straight per 3ah battery. plenty powerful. Love it.
          by
          • Verified Purchase
          4 people found this helpful
          Works great!
          I had a cast iron pole at the far end of yard (to far for power cord) in a large chunk concrete I needed to cut. Bought the P423 grinder and not only did it do the job easily, but afterward still had one power bar left on my battery! (3 ah battery). Was very impressed!
          by
            • Recommended
            4 people found this helpful
            Great for around the house
            Great for around the house
            by
            • Verified Purchase
            • Recommended
            1 person found this helpful
            Replaced my old battery for my hedge trimmer and grass trimmer.
            Replaced my old battery for my hedge trimmer and grass trimmer.
            by
            • Verified Purchase
            • Recommended
            1 person found this helpful
            So I already had two of the brushed models and liked them. This one is much better though. It l...
            So I already had two of the brushed models and liked them. This one is much better though. It lasts longer, looks better, and has all the features I was looking for plus two guards included that I didn’t expect. It’s great!
            by
            • Verified Purchase
            • Recommended
            11 people found this helpful
            I'm a truck driver, and keep it in my truck, and use it to buff my wheels etc. Battery life is aw...
            I'm a truck driver, and keep it in my truck, and use it to buff my wheels etc. Battery life is awesome. I love this thing.
            by
            • Verified Purchase
            • Recommended
            2 people found this helpful
            P423 GRINDER. I picked this up after the expected disappointment from the low rpm brushed grinder...
            P423 GRINDER. I picked this up after the expected disappointment from the low rpm brushed grinder. The brushless P423 made up for it. While not quite as powerful as your average 7A wired grinder, it does well enough to handle the same jobs cutting steel etc. The torque is fine, the primary difference is the ~11,000 rpm where most corded come in around 13,000+ etc. Putting a 4A battery in certainly makes a huge difference with longevity, and a bit of a bump to torque as well. Cutting hard steel like bed frames, stainless steel etc it does fine without getting overly hot and the battery hold throughout every project position I was in (usually 1-2 bars remaining). I have since put a flap sander on the old P421 which makes it suitable being 6500 rpm, and am able to use both productively. If you need a cordless grinder capable of replacing a corded, this is about as close as you'll get with the 4A. You'll need multiple batteries if you use it all day of course, but for typical project usage it's fine and has replaced my corded in all but the most taxing jobs where I need that little extra power.
            by
            • Verified Purchase
            • Recommended
            25 people found this helpful
            Rating provided by a verified purchaser...
            Rating provided by a verified purchaser
            by
              by
                The battery life is not so good....
                The battery life is not so good.
                by
                  by
                    This angle grinder works well but changing the grinding pad...
                    This angle grinder works well but changing the grinding pad is not as easy as I would have expected.
                    by
                      Works well, solid tool....
                      Works well, solid tool.
                      by
                        yes, the two one-plus batteries are working fine. Thank you,...
                        yes, the two one-plus batteries are working fine. Thank you, Frank
                        by
                          Preliminary review of angle grinder
                          I have just begun to use the item and it seems solid and powerful. I would rate a 5 but a couple of times in the initial use it shut off with no warning and and without releasing the switch. Not sure what causes it but if it continues I will take it in to HD for repair or replacement.
                          by
                          • Verified Purchase
                          Rating provided by a verified purchaser...
                          Rating provided by a verified purchaser
                          by
                            Rating provided by a verified purchaser...
                            Rating provided by a verified purchaser
                            by
                              Good for my home use. Would not recommend for...
                              Good for my home use. Would not recommend for heavy use . It's a home owners lite use when you need it. Although I must say it's great not to have a cord hanging around your work project and getting in your way.
                              by
                                Does a great job. Great price....
                                Does a great job. Great price.
                                by
                                  by
                                    Rating provided by a verified purchaser...
                                    Rating provided by a verified purchaser
                                    by
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                                          Showing 1-30 of 941 reviews