Model # P421

Internet #100519983

Store SKU #152332

Store SO SKU #1000795627

Ryobi 18-Volt ONE+ Cordless 4-1/2 in. Angle Grinder (Tool-Only)
0033287139576

Ryobi

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

  • Up to 6,500 RPMs enable fast and precise work
  • Includes: Side Handle, Grinding Guard and Wheel, Spanner Wrench
  • Compatible with over 125+ RYOBI 18-Volt ONE+ Tools
$ 44 00
Purchase Select Ryobi 18V ONE Brushless Cordless Hammer Drill Kit (Internet 300225309) and Receive One Select ONE Bare-Tool or Battery For Free
Promotion Details
Price Valid : 12/14/2018 - 01/24/2019
Purchase OMSID 300225309 and recieve one of the following OMSID for Free, when purchased in cart together 301913870, 301848739, 205885687, 305439007, 301848641, 204321540, 301853896, 301853890, 206955207, 302775352, 203466938, 300800888, 206824269, 303325964, 301913871, 301913879, 301045683, 300258095, 303579585, 304129279, 302771339, 205999646, 301289957, 301289966, 206588778, 205999646, 206892719, 301853896, 301289964, 206405601, 206666886, 301913880, 206955202, 202868525, 202868525, 206955202, 304049794, 100342144, 205105619, 301289956, 205806375, 203466918, 206824275, 203466920, 304129286, 203466924, 301916606, 300234858, 207017500, 301289973, 203060297, 203466916, 100634343, 205754091, 100342149, 205648767, 205022215, 205975756, 100519983, 205975768, 300981191, 205626511, 206354299, 205509661, 300225308, 300997599, 300335930, 206159256, 205885688, 300509751
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Frequently Bought Together

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Product Overview

  • Up to 6,500 RPMs enable fast and precise work
  • Includes: Side Handle, Grinding Guard and Wheel, Spanner Wrench
  • Compatible with over 125+ RYOBI 18-Volt ONE+ Tools
RYOBI introduces the 18-Volt ONE+ Cordless 4-1/2 in. Angle Grinder (Tool-Only). The ONE+ 4-1/2 in. Angle Grinder offers cordless convenience and the power of 6500 RPM for fast and precise work. This tool offers a host of user-friendly features, such as onboard wrench storage, a comfortable over molded grip and a 3-position side handle to help reduce fatigue. It also has an intuitive trigger switch. Backed by the RYOBI 3-Year Manufacturer's Warranty, the 18-Volt ONE+ 4-1/2 in. Angle Grinder includes a side handle, a Type 27 grinding guard, a grinding wheel, a spanner wrench, and an operator's manual.

Product Overview

  • Up to 6,500 RPMs enable fast and precise work
  • Includes: Side Handle, Grinding Guard and Wheel, Spanner Wrench
  • Compatible with over 125+ RYOBI 18-Volt ONE+ Tools
Model #: P421
Sku #: 152332
Internet #: 100519983

RYOBI introduces the 18-Volt ONE+ Cordless 4-1/2 in. Angle Grinder (Tool-Only). The ONE+ 4-1/2 in. Angle Grinder offers cordless convenience and the power of 6500 RPM for fast and precise work. This tool offers a host of user-friendly features, such as onboard wrench storage, a comfortable over molded grip and a 3-position side handle to help reduce fatigue. It also has an intuitive trigger switch. Backed by the RYOBI 3-Year Manufacturer's Warranty, the 18-Volt ONE+ 4-1/2 in. Angle Grinder includes a side handle, a Type 27 grinding guard, a grinding wheel, a spanner wrench, and an operator's manual.

Info & Guides

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Name 5.5 Amp Corded 4-1/2 in. Angle Grinder 18-Volt ONE+ Cordless 4-1/2 in. Angle Grinder (Tool-Only) 7.5 Amp 4.5 in. Corded Angle Grinder 6.5 Amp 4-1/2 in. Angle Grinder
Brand Ryobi Ryobi Ryobi Ryobi
Ratings (271) (685) (163) (62)
Amperage (amps) 5.5 0 7.5 6.5
Power Tool Features No Additional Features Adjustable Handle Position,Grinding Wheel Included,No Additional Features,No Tool Wheel Change,Spindle Lock Adjustable Handle Position,Grinding Wheel Included,Lock On Switch,Spindle Lock Adjustable Handle Position,Grinding Wheel Included,Spindle Lock
Cordless/ Corded Corded Cordless Corded Corded
Wheel Diameter (in.) 4.5 4.5 in 4.5 4.5
Voltage (volts) 18
View Product View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
13.701
Product Height (in.)
5.443
Product Width (in.)
5.669
Wheel Diameter (in.)
4.5 in

Details

Amperage (amps)
0
Arbor Size
5/8 x 11 UNC
Batteries Included
No
Battery Amp Hours
0.0
Battery Power Type
Lithium Ion
Battery Size
Lithium Ion
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
Trigger
Maximum Speed (rpm)
6500
Motor Type
Brushed
Number of Batteries Included
0
Power Tool Features
Adjustable Handle Position,Grinding Wheel Included,No Additional Features,No Tool Wheel Change,Spindle Lock
Product Weight (lb.)
6.18lb
Returnable
90-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18

Warranty / Certifications

Certifications and Listings
1-UL Listed
Manufacturer Warranty
3 Year Limited Warranty

Specifications

Dimensions

Product Depth (in.)
13.701
Product Height (in.)
5.443
Product Width (in.)
5.669
Wheel Diameter (in.)
4.5 in

Details

Amperage (amps)
0
Arbor Size
5/8 x 11 UNC
Batteries Included
No
Battery Amp Hours
0.0
Battery Power Type
Lithium Ion
Battery Size
Lithium Ion
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
Trigger
Maximum Speed (rpm)
6500
Motor Type
Brushed
Number of Batteries Included
0
Power Tool Features
Adjustable Handle Position,Grinding Wheel Included,No Additional Features,No Tool Wheel Change,Spindle Lock
Product Weight (lb.)
6.18lb
Returnable
90-Day
Tools Product Type
Power Tool
Variable Speed
No
Voltage (volts)
18

Warranty / Certifications

Certifications and Listings
1-UL Listed
Manufacturer Warranty
3 Year Limited Warranty

Questions & Answers

Will this grinder work to cut metal?

My question refers to the 4 1/2 in Angle Grinder.
Asked by: George
Very light use only. This thing overheats after a couple of minutes. I consider it useless.
Answered by: PetetheEngineer
Date published: 2018-10-02

Can you convert this grinder into a buffer?

Asked by: Cacov94
Too high of rpm
Answered by: Punus
Date published: 2018-08-26

Will this cut through bike locks quite quickly? And how big is it, will it be bulky if I carry it...

Will this cut through bike locks quite quickly? And how big is it, will it be bulky if I carry it under a jacket? Thanks.
Asked by: BigDave
Thieving bikes are we?
Answered by: Suspicious1
Date published: 2018-11-13

Can I cut off a lock w/ grinder.

It's a round lock from my storage. The kind that has little room to cut
Asked by: Bob
Thank you for asking, Bob. Yes, you are able to cut a lock off with this grinder. I hope this helps and we appreciate your interest in Ryobi! -Keri
Answered by: Ryobi Tools Team
Date published: 2017-08-24
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Customer Reviews

18-Volt ONE+ Cordless 4-1/2 in. Angle Grinder (Tool-Only) is rated 4.3 out of 5 by 683.
Rated 4 out of 5 by from Works like a charm. The only issue I have with it at this time that, when using the tool as a met... Works like a charm. The only issue I have with it at this time that, when using the tool as a metal cutting tool, it overheats the battery rather quickly. The tool then shuts down and you have to wait a fairly long time before the battery cools and recharges. That extends the time for the job. I had to revert to an older electrical powered tool to accomplish the job in a timely manner. I have not used it simply as an angle grinder, but I am sure the same apply. If the tool gets into a tough situation, the battery will over heat.
Date published: 2019-01-15
Rated 4 out of 5 by from The grinder works well and it’s nice and portable. I... The grinder works well and it’s nice and portable. I also like the three different positions for the handle.
Date published: 2019-01-10
Rated 5 out of 5 by from Never had a grinder so cannot compare to others, but quick and easy to set up and it quickly grou... Never had a grinder so cannot compare to others, but quick and easy to set up and it quickly ground off a welded steel outdoor gate latch that had broken so I could replace. Nice add to my growing Ryobi ONE+ tool collection.
Date published: 2019-01-08
Rated 5 out of 5 by from This grinder is easy to operate and, being cordless, is quite handy to use where electricity is n... This grinder is easy to operate and, being cordless, is quite handy to use where electricity is not available. Keep in mind it is cordless. Do not try to make it perform like a corded grinder.
Date published: 2019-01-08
Rated 5 out of 5 by from This was exactly what I was expecting. This was exactly what I was expecting.
Date published: 2019-01-02
Rated 4 out of 5 by from Light weight and sturdy... Light weight and sturdy
Date published: 2019-01-02
Rated 5 out of 5 by from Strong, consistantly power. Great grinder! Strong, consistantly power. Great grinder!
Date published: 2019-01-01
Rated 5 out of 5 by from Haven't use it yet! But the fast charge on the battery. 30 mins an it ready to go, 2 days later i... Haven't use it yet! But the fast charge on the battery. 30 mins an it ready to go, 2 days later it still has the same power. (Without use) really cool. Husband likes it
Date published: 2019-01-01
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