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ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder (Tool Only)

$11900
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  • Brushless Motor Provides up to 30% Faster Cutting
  • Tool-Free Wheel and Guard Adjustment for Quick and Easy Changes
  • Over 225 ONE+ Tools – All Work With Any RYOBI ONE+ 18V Battery
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Price:
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Product Overview

RYOBI Tools

RYOBI Tools

RYOBI gives you the ultimate in cordless versatility, selection and innovation to get the job done. No matter your interests or skill level, RYOBI can power it

ONE+ HP

ONE+ HP

The 18V ONE+ HP Compact Brushless series utilizes Advanced Technologies and Superior Ergonomics to deliver High Performance tools and a premium user experience

Premium Performance

Premium Performance

All tools in the ONE+ HP series feature a Brushless Motor, Advanced Electronics and Lithium-Ion Batteries to deliver more power, longer runtime and longer motor life

Brushless Motor

Brushless Motor

Provides maximum power, extended runtime and longer motor life

High Performance

High Performance

RYOBI’s 18V ONE+ HP tools deliver greater power and speed to get the job done faster and more efficiently

Advanced Technology

Advanced Technology

RYOBI 18V ONE+ HP tools utilize advanced electronics and technology to deliver maximum performance and productivity for end users

Longer Runtime

Longer Runtime

RYOBI 18V ONE+ HP tools are optimized to deliver longer runtimes and more work per charge

High Performance Batteries

High Performance Batteries

ONE+ HP products provide best performance when paired with High Performance batteries

Ergonomic Design

Ergonomic Design

Designed for comfort during extended use without compromising on performance

Durable

Durable

Built to withstand a wide variety of applications

Over 175 ONE+ Tools

Over 175 ONE+ Tools

The cordless system that provides innovative solutions with over 175 tools in the 18V ONE+ system

100% Compatible

100% Compatible

The RYOBI 18V ONE+ cordless platform is 100% compatible: any 18V ONE+ tool works with any 18V ONE+ battery

3 Year Warranty

3 Year Warranty

RYOBI Power Tools are covered by a 3-year warranty

The RYOBI 18V ONE+ HP Brushless line of products is redefining power and performance. The RYOBI 18V ONE+ HP Brushless 4-1/2 in. Angle Grinder/Cut-Off Tool (PBLAG01B) provides up to 30% faster cutting and also provides up to 9,200 RPM to help complete your next project more efficiently and effectively. This tool truly offers cordless convenience with exceptional runtime, making up to 200 cuts through 3/8 in. rebar per charge using an 18V ONE+ 9.0 Ah Battery. The Brushless 4-1/2 in. Angle Grinder/Cut-Off Tool is more than capable of handling your grinding or cutting needs right out of the box, including a wheel and guard set for both applications. The tool-free wheel removal makes switching wheels out quick and easy. The 3-position side handle along with the improved comfort grip auxiliary handle provide ultimate comfort, control, and versatility. The 4-1/2 in. Angle Grinder/Cut-Off Tool’s paddle switch design allows for easy operation even with heavy work gloves. Best of all, it is part of the RYOBI 18V ONE+ System of over 225 tools that all work on the same battery platform. This Brushless 4-1/2 in. Angle Grinder/Cut-Off Tool is backed by the RYOBI 3-Year Manufacturer's Warranty and includes the PBLAG01B 18V ONE+ HP Brushless 4-1/2 in. Angle Grinder/Cut-Off Tool, Comfort Grip Auxiliary Handle, Grinding Wheel, Cutting Wheel, Type 27 Grinding Guard, Type 1 Cutting Guard Attachment, FIXTEC Nut, Spanner Wrench, and operator’s manual. Battery and charger sold separately.
  • Brushless motor provides up to 9,200 RPM
  • Up to 30% faster cutting
  • Includes wheels and guards for grinding and cutting applications
  • Tool-free accessory wheel removal for quick and easy wheel changes
  • Tool-free guard adjustment
  • Large paddle switch for easy operation
  • 3-position side handle for user control and versatility
  • Improved comfort grip auxiliary handle for user comfort
  • Perfect for DIY or professional jobs
  • Part of the RYOBI 18V ONE+ System of over 225 Cordless Tools
  • 3-year manufacturer's warranty
  • Includes: (1) PBLAG01 18V ONE+ HP Brushless 4-1/2 in. Angle Grinder/Cut-Off Tool, Comfort Grip Auxiliary Handle, Grinding Wheel, Cutting Wheel, Type 27 Grinding Guard, Type 1 Cutting Guard Attachment, FIXTEC Nut, Spanner Wrench, and operator’s manual
  • Battery and charger sold separately






  • Click here for more information on Electronic Recycling Programs
  • California residents

Info & Guides

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ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder (Tool Only)

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BrandRYOBIDEWALTRYOBIDEWALT
Name7 in. 10 Amp Angle Grinder20-Volt MAX Cordless 4-1/2 in. to 5 in. Grinder (Tool Only)ONE+ HP 18V Brushless Cordless 4-1/2 in. Angle Grinder (Tool Only)20-Volt MAX Cordless Brushless 4-1/2 to 5 in. Paddle Switch Angle Grinder with FLEXVOLT ADVANTAGE (Tool Only)
Price
$7997
$9900
$11900
$19900
Ratings
(53)
(5901)
(133)
(121)
Cordless/ CordedCordedCordlessCordlessCordless
Wheel Diameter (in.)74.5 in4-1/2 in4.5
Power Tool FeaturesAdjustable Handle Position,Lock On Switch,Variable SpeedAdjustable Handle PositionAdjustable Handle Position,No Tool Wheel ChangeAdjustable Handle Position
Amperage (amps)1000.0 A0.0
Voltage (volts) 20 V1820 V
Battery Amp Hours No BatteryNo BatteryNo Battery
Battery/Charger Tool OnlyTool OnlyTool Only
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)
0.0 A
Arbor Size
5/8 - 11 UNC
Batteries Included
No
Battery Amp Hours
No Battery
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
Paddle
Included
Grinding Wheels
Maximum Speed (rpm)
10400
Motor Type
Brushless
Number of Total Batteries Included
0
Power Tool Features
Adjustable Handle Position,No Tool Wheel Change
Product Weight (lb.)
4.35 lb
Returnable
90-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
3-Year Manufacturer's Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.4
    out of 148 reviews
  • 81% recommend this product
Filter by:
Showing 1-10 of 148 reviews
Ryobi one 18 Volt brushless brushless 4 1/2 grinder easy to assemble. The support arm can be ins...
Ryobi one 18 Volt brushless brushless 4 1/2 grinder easy to assemble. The support arm can be installed for left or right handed use. The grinder is lightweight and easy to maneuver. The battery took a few hours to charge and you get plenty of use from the grinder on a single charge but I recommend getting an additional battery. The guard on it is fully adjustable. Another great product from Ryobi.
by CYNTHIA
  • Recommended Product
I acquired the RYOBI 18-Volt ONE+ HP Lithium-Ion Brushless Cordless 4-1/2 in. Angle Grinder for o...
I acquired the RYOBI 18-Volt ONE+ HP Lithium-Ion Brushless Cordless 4-1/2 in. Angle Grinder for occasional work. I am a DIYer and not a professional using it daily, but it works great and the brushless motor provides more than enough power for everything that I need. I read of two complaints about this grinder, but I found that both complaints were without merit. First, the grip/handle was reported to be too big. I am a large guy with big hands; I found the grip/handle to be perfect—I was able to use it for wire brushing for quite a while without my hands getting tired. Second, I read that the grinder consumed lots of battery power and would not run on the 1.5AH and 2.0AH batteries. I tested the grinder with a 18V ONE+™ 2.0AH Compact Lithium battery and it worked great. I used the smaller battery to make numerous cuts on ½” rebar without problems or lack of speed or power. I was not sure what to expect from this grinder but I have been extremely pleased and surprised. I would definitely recommend the RYOBI 18-Volt ONE+ HP Lithium-Ion Brushless Cordless 4-1/2 in. Angle Grinder.
by BARNEY
  • Recommended Product
RYOBI ONE+ HP 18V BRUSHLESS CORDLESS 4-1/2 IN. ANGLE GRINDER . I am very impressed with this gri...
RYOBI ONE+ HP 18V BRUSHLESS CORDLESS 4-1/2 IN. ANGLE GRINDER . I am very impressed with this grinder. It is very heavy duty. I have several Ryobi products and have been very happy with them. They last a long time and preform very well. The grinder comes with a side handle, two wheels, a grinding wheel and a cutoff wheel. Easy to read instructions. Two wheel guards one for grinding and one for cutting and a wrench for changing wheels. I am very happy with it.
by Jeff
  • Recommended Product
Very happy with the Ryobi 18v Cordless Angle Grinder as our first impression. it makes a nice add...
Very happy with the Ryobi 18v Cordless Angle Grinder as our first impression. it makes a nice addition to our Ryobi tool collection. The grinder has only one speed, but perhaps that's standard with other brands, too. Three good features: . Safety Lock . Interchangeable batteries with other Ryobi 18v tools -- builds brand loyalty, too! . The grinder starts smoothly and slowly when pressing the trigger switch -- almost like a delayed start. This smooth start is good to avoid start up torque (kick) in your hand. Awaiting springtime to put this grinder to work on redesigning the grape arbor.
by TheEnertainer50
  • Recommended Product
This tool is fantastic, but still not quite at the pro level. It is absolutely one of the finest ...
This tool is fantastic, but still not quite at the pro level. It is absolutely one of the finest RYOBI tools that I have ever seen. The problem is that I found that this tool cuts out more easily than other brands (as if it becomes overloaded easily), it also overheats and cuts out, etc. A pro can’t have that happen. Additionally, I found it odd that there is a significant performance improvement with a larger amp-hour battery. The 2Ahr battery cuts out too easily. I’d recommend you use a 6Ahr, or larger. Also, if you are going to buy non-genuine batteries, be mindful that this has a two prong design. Matching up correctly will affect performance! For what it is worth: If you have a job with hours of continuous cutting, I wouldn’t use any battery-powered angle grinder on the market. That’s where a corded angle grinder still shines. With all that said, brushless motors immediately make this tool high end. These motors mean less maintenance, less heating up (despite what I said), and higher efficiency. The Lithium Ion batteries are high end, because they can withstand hundreds of charging cycles, they have high charge densities (lighter weight), and are more stable. The built-in electronics also help the tool perform and keep it protected. I love that this unit has 3 positions for the auxiliary handle. I like the rubberized grip too. The paddle switch is great for activation, while wearing beefy gloves. The tool-free wheel change out is absolutely a luxury. With that said, it also comes with a pin wrench, if your wheel gets stuck. The die cast body is an indication that this is built to last. The ergonomic shape is far superior to most DIY angle grinders. At 9,200 rpm, this actually exceeds the equivalent DEWALT tool, but I’m not sure the DEWALT would cut out. I used this angle grinder to cut some structural steel. It absolutely gets the job done. But, I’m not sure that this belongs in the field, under the harshest of applications.
by JOHN
  • Recommended Product
12 people found this helpful
Ryobi 18 Volt ONE+HP Lithium=Ion Brushless 4 1/2 in. Angle Grinder. When I ordered the Ryobi 4 1/...
Ryobi 18 Volt ONE+HP Lithium=Ion Brushless 4 1/2 in. Angle Grinder. When I ordered the Ryobi 4 1/2 in. 18 Volt Lithium-Ion angle grinder I knew it would fit great with the rest of the Ryobi tools I have, they are all 18 volt Lithium-Ion ONE+HP 2Ah or 4 Ah. This is why I ordered tool only as I already have batteries and chargers and Ryobi shows they have over 175 tools that take the 18 volt Lithium-Ion batteries either 2Ah or 4Ah, the 4Ah is twice the run time. The Ryobi 4 1/2in angle grinder is well balanced with the shape of the handle and the paddle switch for ease of starting or stopping, the safety switch is also easy to use. I installed the grinding wheel first, liked the ease of use and quality of grinding. I have two other corded 4 1/2in. grinders; I will change the Ryobi to a flap disc and the other two to a grinding wheel and a cut off wheel. I am very happy with all the Ryobi 18 volt ONE+HP Lithium-Ion tools I have.
by OldbutYoung
  • Recommended Product
If you want to make a tough job easier, look no further than this brushless angle grinder/cut off...
If you want to make a tough job easier, look no further than this brushless angle grinder/cut off tool. I had to cut several nails and this tool made it so easy. I then changed to the grinding blade and used it to sharpen my mower blade as I do not own a bench grinder. I did initially have an issue of understanding how to put the guard on but I called customer support and the agent was able to walk me through step by step to make sure I was not only inserting the guard properly but also using the tool correctly. It really is an amazing tool that I have added to my Ryobi collection.
by Heebee
  • Recommended Product
1 person found this helpful
The RYOBI 18-Volt ONE+ HP Lithium-Ion Brushless Cordless 4-1/2 in. Angle Grinder is part of the R...
The RYOBI 18-Volt ONE+ HP Lithium-Ion Brushless Cordless 4-1/2 in. Angle Grinder is part of the Ryobi ONE+ System which uses an interchangeable 18-Volt Lithium-Ion battery. The grinder is brushless, and cordless which allows me to use it anywhere at anytime. The angle grinder fits a 4-1/2 in. wheel. The grinder comes with a Ryobi 3-Year Manufacturer's Warranty, This was a must to have for my tool collection and I have already found multiple uses for it. The best is grinding down nails which have snapped or bolts which are to rusty to remove with a wrench.
by JAFJR62
  • Recommended Product
1 person found this helpful
The Ryobi One+ Angle Grinder is the most comfortable angle grinder I have. The trigger mechanism...
The Ryobi One+ Angle Grinder is the most comfortable angle grinder I have. The trigger mechanism on it has a safety switch that easily disengages while preventing accidental startup and does not require the constant thumb pressure of my other angle grinders. This use of the fingers in a natural clasping motion prevents the fatigue that the constant thumb pressure of other grinders cause. The unit is beefy, coming in at 6.2 lbs. fully assembled with battery (not included). When you pick it up though it feels good in the hand and the heft gives the feeling of control, necessary for the wood carving that I use it for and doesn’t torque on startup as some of my other angle grinders. The shaft on the Ryobi is 5/8” so the bushing fits the 7/8” shoulder on most cutting wheels, including my favorite shaping disk. The handle easily screws in on the right, left, or top sides of the grinder. The guard rotates easily with a thumb spring and locks in place without disassembling the wheel. And of course, a major advantage in comparing to the other is not having to deal with the extension cords. The Ryobi unit comes with a Type 1 guard for cutoff work and a Type 27 guard for grinding as well as both a cutoff wheel and grinding wheel.
by Pops
  • Recommended Product
3 people found this helpful
I have the non-brushed version of the 4 1/2 in angle grinder, and it has worked just fine over th...
I have the non-brushed version of the 4 1/2 in angle grinder, and it has worked just fine over the years. I have other tools from the HP line and have been very impressed with them, so I’ve been upgrading some of my tools with the upgraded line. This is a bit smaller than the previous one, and has just as good of a grip. I actually think it’s better with the upgraded material they are using on the handles. The power is great and feels like it will cut or grind just about whatever I need it to. Changing the disks is easy with the nut which has an extendable handle, and there is also a wrench included if you need a bit more grip on it. It includes a grinding and cutting disk to get your started, along with a detachable handle that can be placed in a few different positions.Overall, this is a good upgrade if you had the non-brushed grinder, and is a perfect grinder to get started with if you don’t have one at all.
by Spencer
  • Recommended Product
3 people found this helpful
Showing 1-10 of 148 reviews