Internet #301853890

Model # P423

Store SKU #1002587790

Store SO SKU #1002473660

0033287175475

RYOBI

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
  • World’s Largest 18-Volt Tool System*
$ 99 00
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Product Overview

  • Cutter/grinder with lock-on switch and powerful brushless motor
  • Includes: Grinding Wheel, Side Handle, and Spanner Wrench
  • World’s Largest 18-Volt Tool System*
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 the RYOBI ONE+ World's Largest 18-Volt Tool System*. 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.
  • 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+ World’s Largest 18-Volt Tool System*
  • 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
  • *Stem Pack Style Battery
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Product Overview

  • Cutter/grinder with lock-on switch and powerful brushless motor
  • Includes: Grinding Wheel, Side Handle, and Spanner Wrench
  • World’s Largest 18-Volt Tool System*
Model #: P423
Sku #: 1002587790
Internet #: 301853890

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 the RYOBI ONE+ World's Largest 18-Volt Tool System*. 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.

  • 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+ World’s Largest 18-Volt Tool System*
  • 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
  • *Stem Pack Style Battery
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Info & Guides

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Price
$59.00
$89.00
$99.00
$299.00
Ratings (236) (194) (218) (149)
Amperage (amps) 7 11 0 0
Power Tool Features Lock On Switch,No Tool Wheel Change,Second Handle Included,Spindle Lock Adjustable Handle Position,Grinding Wheel Included,Second Handle Included,Spindle Lock Brushless,Grinding Wheel Included,Lock On Switch,Spindle Lock Adjustable Handle Position,Bag Included,Bag Included,Second Handle Included
Cordless/ Corded Corded Corded Cordless Cordless
Wheel Diameter (in.) 4.5 in 4.5 4-1/2 in 6
Voltage (volts) 18 60
View Product View Product View Product View 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
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
90-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18

Warranty / Certifications

Manufacturer Warranty
3-Year Limited Warranty

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
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
90-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18

Warranty / Certifications

Manufacturer Warranty
3-Year Limited Warranty

Questions & Answers

why can't you find cut off wheels that will fit this particular tool? I have searched in store an...

why can't you find cut off wheels that will fit this particular tool? I have searched in store and online as well. There are no cut off wheels that fit 4 1/2 x 5/8 (arbor size) . there are 7/8. How can this be a cut off tool when there are no blades that will fit?
Asked by: arf
in my opinion, it is an angle grinder and there are plenty of things that attach to the arbor this uses. the actual thin cut off wheels are not made to fit this. I use grinding discs and even cement grinders on it.
Answered by: zenmaster
Date published: 2018-11-15

Does anyone else have a problem with their run time?

I have many 4A batteries and they all drain within 5-8 minutes when using this brushless grinder. I know my batteries are still good. Runs long with my other tools. Maybe my grinder is defective.
Asked by: GuamGuy
Yes, this thing eats batteries just like battery powered circular saw. Ryobi offers larger batteries but I can't afford them.
Answered by: CDS
Date published: 2019-03-16

Is it supposed to shut down with just light pressure I can literally grab the shaft and shut it down with my hand

Asked by: TNT
They don't say this anywhere I've looked, but you NEED at least the 4ah One+ batteries with this grinder. The 1.5ah ones just don't work well giving about 4 minutes of run time and the 1.3ah ones didn't work at all (the "grab the shaft and it'll shut down") Personally, it's still only going to be lackluster until you put the new 6ah and 9ah batteries on it, THEN it's a monster that will give a corded unit a run for it's money.
Answered by: TomL
Date published: 2019-05-22

Does anyone else have the problem of the tool shutting off while cutting metal. Mine will only ...

Does anyone else have the problem of the tool shutting off while cutting metal. Mine will only cut less than 1 inch of 1/16 aluminum before it shuts off and then you have to turn it off and then back on. This is with light pressure because you cannot bear down on it. Very frustrating to use this $99 tool.
Asked by: VinnyK
Yes, same issue and should not need "special" batteries.
Answered by: BILL
Date published: 2019-01-26
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Customer Reviews

18-Volt ONE+ Cordless Brushless 4-1/2 in. Cut-Off Tool/Angle Grinder (Tool Only) is rated 4.3 out of 5 by 218.
Rated 5 out of 5 by from 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.
Date published: 2017-11-15
Rated 4 out of 5 by from Run really well but the auto shutoff can get annoying but is good safety feature I would recommen... Run really well but the auto shutoff can get annoying but is good safety feature I would recommend though getting 6ah batteries it drains 4ahs quickly. Dont even use batteries lower that 4ah probably damage them for how fast it drains like tool is part of handle to change disks quick would like to see it have a trigger than a locking button
Date published: 2019-05-22
Rated 5 out of 5 by from I got this to cut cinder blocks. It worked great for that task. The wrench stores in the side han... I got this to cut cinder blocks. It worked great for that task. The wrench stores in the side handle. On mine there is nothing to retain it, no click or friction. I couldn't figure out how to retain it but wanted to have it handy for disk changes. I read several reviews but didn't see where others had this problem.
Date published: 2019-06-25
Rated 5 out of 5 by from Needed a grinder/cut-off tool at a remote site that does... Needed a grinder/cut-off tool at a remote site that does not have electric service. I have numerous Ryobi tools and batteries so this seemed like the sensable purchase. Like all Ryobi tools this worked well and got the job done. A pleasant surprise was the length of time a battery lasted.
Date published: 2019-06-25
Rated 5 out of 5 by from I previously had the old blue and yellow version and was disappointed in the power. After reading... I previously had the old blue and yellow version and was disappointed in the power. After reading other reviews I decided to purchase the new improved brushless version and I am very happy with the improvements. In my opinion it is well worth the money!
Date published: 2019-06-25
Rated 5 out of 5 by from Great tool!This tool worked as well as my corded 4... Great tool!This tool worked as well as my corded 4 1/2” tool. I haven’t used it long enough to get a feel for battery life. I used the new 9 AH battery and didn’t get close to draining it after cutting about 20 cattle panels.
Date published: 2019-06-11
Rated 5 out of 5 by from The design is great, fits perfect in my hand.... The design is great, fits perfect in my hand. They really thought out this tool, from how easy it is to change the guards, or the position of the guards, to how they have the wrench to change the gut off discs in the handle.
Date published: 2019-06-21
Rated 1 out of 5 by from This grinder is not very good I love ryobi tool... This grinder is not very good I love ryobi tool this is one of the worst tool i have purchased of ryobi it constantly kicks out I would not recommend this tool the old ryobi grinder is so much better and it’s cheaper
Date published: 2019-05-04
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