Internet #301853890

Model #P423

Store SKU #1002587790

Store SO SKU #1002473660

18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder (Tool Only)

  • Cutter/grinder with lock-on switch and powerful brushless motor
  • Includes: Grinding Wheel, Side Handle, and Spanner Wrench
  • Over 175 ONE+ Tools – All Work With Any RYOBI ONE+ 18V Battery
  • See More Details
$9900

Frequently Bought Together

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Price:
$9900

Product Overview

18-Volt Battery Platform

18-Volt Battery Platform

No matter your interests or skill level, we can power it. With cordless lithium-ion technology, RYOBI can power you through all types of projects from drilling, driving, cutting, and fastening, to lighting, plumbing, cooling, and rocking, to trimming, edging, mowing, and clearing – and so much more.

World’s Largest 18V Tool System

World’s Largest 18V Tool System

RYOBI gives you the ultimate in versatility and selection to get the job done. From household tasks to the jobsite to recreation and everything in between, there is a ONE+ product for you.

RYOBI ONE+ Delivers More

RYOBI ONE+

RYOBI has never changed – and will never change – the 18V ONE+ battery platform, meaning our newest products & batteries fit the original RYOBI tools and batteries from 1996. RYOBI ONE+ is the system that delivers more.

Brushless Motor

Brushless Motor

Brushless motor technology provides longer runtime, more power, and a longer motor life.

LITHIUM+HP Battery Technology

LITHIUM+HP Battery Technology

Pair brushless power tools with LITHIUM+HP batteries for optimum power, runtime, torque, and speed.

Tool & Battery Communication

Tool & Battery Communication

The High Performance (HP) terminals on our LITHIUM+HP batteries allow the tool and battery to communicate and deliver peak performance.

Premium Performance

Premium Performance

Unleash the full power of your brushless power tools. HP communication technology paired with brushless tools maximizes performance in all applications.

RYOBI ONE+

RYOBI ONE+

Put the power of 18V ONE+ at your fingertips from the cordless system that delivers more.

18V Lithium

18V Lithium

Lithium-ion battery technology with fade-free power and Extreme Weather Performance to withstand the toughest conditions.

3 Year Limited Warranty

3 Year Limited Warranty

RYOBI Portable Power Tools and Bench/Stationary tools purchased on or after 1.1.11 are covered by a 3-year warranty.

World’s Largest

World’s Largest

The RYOBI 18V ONE+ System gives you the ultimate in versatility and selection.

100% Compatible

100% Compatible

All RYOBI 18V tools and batteries are 100% forwards and backwards compatible. Any RYOBI 18V tool works with any of our 18V batteries.

90 Day Guarantee

90 Day Guarantee

Buy with confidence with our 90 day no-risk satisfaction guarantee.

RYOBI introduces the 18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder (Tool Only). 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. Best of all, it's a part of the RYOBI ONE+ System of over 175 Cordless Tools that all work on the same battery platform. Backed by the RYOBI 3-Year Manufacturer's Warranty, the 18-Volt 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. Battery and charger sold separately.
  • California residents
  • Brushless motor provides longer runtime, more power, and longer motor life
  • Compatible with LITHIUM+ HP batteries for even more performance
  • Versatile design is perfect for cutting or grinding applications
  • Compact design for user control and maneuverability
  • GRIPZONE overmold with microtexture for optimum grip and user comfort
  • 3-position side handle for optimum hand placement
  • On-board storage for spanner wrench
  • Spindle lock for a quick and easy wheel change
  • Ergonomic design for user comfort during prolonged use
  • Part of the RYOBI ONE+ System of over 175 Cordless Tools
  • 3-year manufacturer's warranty
  • Includes: (1) P423 18-Volt 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, and operator's manual
  • Battery and charger sold separately






  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Price
$7900
$9900
$11900
$15900
Ratings
(267)
(650)
(161)
(151)
Cordless/ CordedCordedCordlessCordedCorded
Wheel Diameter (in.)4.5 in4-1/2 in4.5 in7 in
Power Tool FeaturesGrinding Wheel Included,Second Handle Included,Spindle LockBrushless,Grinding Wheel Included,Lock On Switch,Spindle LockBag Included,Grinding Wheel Included,Lock On SwitchGrinding Wheel Included,Lock On Switch,No Tool Wheel Change,Second Handle Included
Amperage (amps)7.5011 A15
Voltage (volts) 18
Battery Amp Hours 0.0
View ProductView ProductView ProductView Product

Specifications

Dimensions

Product Depth (in.)
11.5 in
Product Height (in.)
4.25 in
Product Width (in.)
5 in
Wheel Diameter (in.)
4-1/2 in

Details

Amperage (amps)
0
Arbor Size
5/8 - 11 UNC
Batteries Included
No
Battery Amp Hours
0.0
Battery Power Type
Lithium Ion
Battery Size
18-volt
Battery/Charger
Tool Only
Battery/Charger
Tool Only
Charger Included
Charger Not Included
Color Family
Green
Condition
New
Cordless Tool Type
Angle Grinder
Cordless/ Corded
Cordless
Electronic Speed Control
No
Grinder Switch Type
Sliding Switch
Maximum Speed (rpm)
10400
Motor Type
Brushless
Number of Batteries Included
0
Number of Batteries Included
0
Power Tool Features
Brushless,Grinding Wheel Included,Lock On Switch,Spindle Lock
Product Weight (lb.)
4.35 lb
Returnable
180-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18

Warranty / Certifications

Manufacturer Warranty
3-Year Limited Warranty

Questions & Answers

53Questions26Answers

The spanner wrench falls out of the handle when it is facing downward. Is this normal for this mo...

Asked by Nat September 30, 2020
4
Answers

Thank you all for the answers. Yes, I did push it in all the way, but it still falls out. It doesn't necessarily need to be running for it to fall out. I have not actually used this one, so I am going to attempt to exchange it and hopefully get one that does not have this problem.

Can we use it for wood cutting?

Asked by Mehboob September 5, 2020
3
Answers

Hi Mehboob, The RYOBI 18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder (Tool Only) P423 can be used for grinding and cutting metals such as sheet steel, pipe, steel rods aluminum, brass, and copper. I hope this helps and we appreciate your interest in RYOBI! - Eve

Would this work well on concrete?

Asked by ErikB August 26, 2020
3
Answers

Yes if you get a diamond cutting blade

Is this an auto volts?

Asked by Raffy August 11, 2020
1
Answer

Hello Raffy, thank you for your question. The RYOBI 18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder is an 18 Volt, battery operated tool. - Justin

Is there a reverse polarity switch to change the direction of cutting or grinding wheel rotation for spark direction?

Asked by Alphafez August 9, 2020
5
Answers

Hello Alphafez, thank you for your question. The RYOBI 18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder only rotates in one direction. - Justin

Just got mine and love it so far but the tool keeps falling out of the handle. There is no tensio...

Asked by BIll June 2, 2020
3
Answers

Hi Bill! Thank you for your question. I'm sorry about the issue you are experiencing. Please give our technicians a call at 800-525-2579 to assist you in resolving the issue.

will a brushless angle grinder stay cleaner than a brushed angle grinder when cutting concrete brick and block I'm on my thir

Asked by rayray May 21, 2020
2
Answers

Yes, since the motor is brushless it is a sealed motor and will not allow outside dust to contaminate the motors internal components like an open motor would

Can I use a 4" diamond blade with this? Thanks!

Asked by Barry April 25, 2020
2
Answers

yes

When this grinder is turned off and you turn the grinding wheel is it supposed to make the loud clicking noise

Asked by R24 April 24, 2020
2
Answers

It is the brushless motor, so yes.

Internet #311807642Model # P166-P423 18-Volt ONE+ Brushless 4-1/2 in. Angle Grinder w/Free ONE+ L...

Asked by CW April 23, 2020
1
Answer

Hello CW! Please contact your local Home Depot or homedepot.com concerning product pricing, availability, and promotions. They can be reached at 1-800-466-3337. Thanks for reaching out to us! - Eve

18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder (Tool Only) - page 2

Customer Reviews

  • 650 Customer Reviews
  • 4.4 out of 5 stars overall
89% of customers recommended.
Overall Ratings
5star-icon(458)
4star-icon(98)
3star-icon(27)
2star-icon(19)
1star-icon(48)
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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.
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5
0
Lightweight, powerful for a cordless, super handy!
Lightweight, powerful for a cordless, super handy!
Was this helpful?
1
0
It's a pretty okay grinder. I've had it for a couple months and used it on some small projects an...
Quality :
4
Value :
1
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.
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1
0
Missing grinder !!!!
I ordered (Model P166-P423) but recieved only P166 , and not P423 (the Angle grinder).
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0
0
used for about 15 minutes straight per 3ah battery. plenty...
used for about 15 minutes straight per 3ah battery. plenty powerful. Love it.
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3
0
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!
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4
0
Great for around the house
Great for around the house
Was this helpful?
1
0
Savannah, GA
Did it's job well!
Customer review from ryobitools.com logo
Bought this a couple weeks ago to cut a square hole into a steel door for an automatic doggie door. This tool cut through the steel like butter. Simply awesome power. Thought the job was going to be a little harder but this made it a breeze. Definitely recommend this tool if you're using it for a similar purpose. I haven't tried it with tougher/thicker materials so I can't give any feedback on that but for sheet metal, this is the tool to have! Thanks Ryobi.
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0
0
Cleveland, Ohio
Cuts Like A Hot Knife...
Customer review from ryobitools.com logo
Added the brushless grinder to my kit to make my days easier. My working need is for investment real-estate properties..OLD properties. Old fasteners, mail boxes, old piping, weird woodwork etc. I've used my grinder to: - cut off toilet bolts. - modify metal door hardware. - sand/remove large amounts of wooden material (doorways W/uneven woodwork). -cut cast iron plumbing amongst several other applications. Cutting through bolts is like cutting wet noodles W/ steak knives. I use Diablo cut/grind wheels for metal/wood as well as diablo flap discs for removing lots of wood material. The time and effort saved really does boost productivity which matters when working on 15 unit+ apartment complexes. The ONE+ line allows the user to go anywhere and work on anything so long as the batteries are available. For my intended use the Ryobi ONE+ lineup is killing it, the portability, convenience, power, dependability and affordability are right where they should be!
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0
0
Cape Coral Florida
The Best Angle Grinder i have ever owned!!!!!!
Customer review from ryobitools.com logo
Wow, what a tool. I have the Brushed Version of Ryobi and a Dewalt Brushed angle grinder, both great tools, but This Ryobi P423 Brushless Angle Grinder smokes both of them in any test and every aspect of features. by far worth every penny and another reason Ryobi has earned a customer for life. I would recommend this tool not just for DIY users but for Professional too. i use my Ryobi tools in the field everyday and they compete if not out perform most of the top brands!!! Thank you Ryobi for another great tool
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