Model # 6121-30

Internet #203405168

Store SO SKU #1000796667

Milwaukee 11 Amp 4.5 in. Small Angle Grinder with Lock-On Trigger Grip


11 Amp 4.5 in. Small Angle Grinder with Lock-On Trigger Grip

$11104 /each
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Frequently Bought Together

Product Overview

The 11 Amp 4-1/2 in. Small Angle Grinder (Trigger Grip, Lock-On) delivers up to 3X more durability and up to 50% more power than the competition. With a 1,400 MWO motor that powers through the toughest jobs, the 6121-30 is the perfect match for industrial users. Milwaukee's Electronic Advantage includes Overload Protection to maximize motor life, an Electronic Clutch that extends tool life and helps prevent bind-up, Line Lock-Out that prevents automatic start-up after power loss, and Soft Start. Featuring a 100% tool-free design, this Grinder allows the user to change all accessories, including hubbed product, without a wrench. In addition, the tool-free, burst resistant, adjustable guard allows users to make quick guard installations and adjustments.

  • Powerful 11 Amp, 11,000 RPM motor provides maximum performance and durability
  • Overload protection: maximizes motor life
  • Electronic clutch: extends tool life and prevents bind-up
  • Tool-free accessory change: easily change "all accessories" without a wrench
  • Tool-free adjustable guard: provides quick guard installations and adjustments
  • Advanced airflow system: maximizes airflow and reduces debris ingress, improving motor life and performance
  • Debris baffles – protect internal components by deflecting damaging debris out of the airflow at the intake vents
  • External brush doors – reduces service time by providing easy access to brushes
  • Trigger grip handle provides better control, reach and leverage
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)
Wheel Diameter (in.)
4.5 in


Amperage (amps)
Arbor Size
Case Included
Color Family
Cord Length (ft.)
Corded Tool Type
Angle Grinder
Cordless/ Corded
Electronic Speed Control
Grinding Wheel Included
Maximum Speed (rpm)
Power Tool Features
No Additional Features
Product Weight (lb.)
Side Handle
Spindle Lock
Tools Product Type
Power Tool
Variable Speed

Warranty / Certifications

Certifications and Listings
1-UL Listed,CSA Listed,ETL Listed
Manufacturer Warranty
5 Year Manufacturer Limited Warranty

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Customer Questions & Answers

does this come with a wrench and spool nut

Asked by: Anonymous
doug, We have reached out to the vendor about your question, and this is their response to you "Yes. The 6121-30 Milwaukee® 11 Amp 4 ½” Small Angle Grinder with Lock-on Trigger Grip includes the following: (1) Flange, (1) Side Handle, (1) Spanner Wrench, and (1) Type 27 Guard."
Answered by: Anonymous
Date published: 2015-09-17

Is this the right tool to cut through 1/2" carriage bolts cemented into the ground?

If not, what power tool should I use?
Asked by: Bubba
This tool will work for cutting 1/2" carriage bolts. You could also cut the bolts using a Sawzall​ with a metal cutting blade.
Answered by: MilwaukeeElectric
Date published: 2016-04-22

Is there a case with the product sold together?

Asked by: zxheng
We do not currently offer a 11-amp 4.5" Small Angle Grinder with a case. We do offer cordless grinder solutions with a case and we also sell contractor bags separately for storage.
Answered by: MilwaukeeElectric
Date published: 2015-09-20
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Customer Reviews

11 Amp 4.5 in. Small Angle Grinder with Lock-On Trigger Grip is rated 4.8 out of 5 by 4.
Rated 5 out of 5 by from Jazzy little grinder After suffering through two twenty dollar specials, I finally bought a high-qual. I should have bought this little Milwaukee years ago. . .
Date published: 2015-02-03
Rated 5 out of 5 by from Milwaukee 4 1/2" grinder This is a well designed grinder and heavy duty for its size and I highly recommend this product .
Date published: 2016-06-09
Rated 5 out of 5 by from Great Milwaukee reputation. I bought this grinder to clean welds. Once again, another great Milwaukee product.
Date published: 2013-04-02
Rated 4 out of 5 by from Good quality holding up under the rigor of instruction This item was purchased for a College Welding lab. We had purchased three others from another retailer and were pleased so ordered three more through Home Depot
Date published: 2014-05-13
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