Internet #206058501

Model # GA4542C

Store SO SKU #1001363398

0088381699761

Makita

12 Amp 4-1/2 in. SJS II High-Power Angle Grinder

  • Has SJSII, designed to reduce vibration felt by the user
  • SJSII Technology Reduces Vibration for Operator Comfort
  • Shop the Metalworking Tools
$ 147 11
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Frequently Bought Together

Frequently Bought Together

Product Overview

  • Has SJSII, designed to reduce vibration felt by the user
  • SJSII Technology Reduces Vibration for Operator Comfort
  • Shop the Metalworking Tools
The Makita 4-1/2 in. SJS II High Power Angle Grinder (GA4542C) combines power, convenience, comfort and motor-protection features for longer-lasting industrial performance. It is ideal for cutting, grinding ferrous metal, paint and rust removal, shipyard maintenance, metal polishing, general steel grinding, auto repair work, cutting brick and masonry, restoration work and more. The GA4542C is equipped with SJS II, a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop. SJS II is also features a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use. The 12 Amp motor delivers 2,800-11,000 RPM for versatility and maximum productivity. Labyrinth construction protects the motor with a complex set of channels, prohibiting dust and contamination from entering the motor. Additional protection features include a Zig-Zag epoxy applied to both sides of the armature coil and a powder-coating to the field. This forms a barrier under rotation and is engineered to protect from dust and debris penetration for longer tool life.
  • Powerful 12.0 Amp motor delivers more output and variable (2,800 - 11,000) RPM
  • SJS II provides a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop
  • SJS II provides a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use
  • Vibration absorbing side handle provides increased comfort on the job
  • Electronic controller provides constant speed control which automatically applies additional power to the motor to maintain speed under load
  • Electronic controller provides soft start which suppresses start-up reaction for smooth start-ups and longer gear life
  • Electronic controller provides an electronic current limiter which helps protect the motor from overload
  • Variable speed control dial enables user to match the speed to the application
  • Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life
  • Spiral bevel gears for smoother rotations and a more efficient transfer of energy
  • Tool-less wheel guard for easy adjustment
  • Slide switch with lock-on for continuous use
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Product Overview

  • Has SJSII, designed to reduce vibration felt by the user
  • SJSII Technology Reduces Vibration for Operator Comfort
  • Shop the Metalworking Tools
Model #: GA4542C
Internet #: 206058501

The Makita 4-1/2 in. SJS II High Power Angle Grinder (GA4542C) combines power, convenience, comfort and motor-protection features for longer-lasting industrial performance. It is ideal for cutting, grinding ferrous metal, paint and rust removal, shipyard maintenance, metal polishing, general steel grinding, auto repair work, cutting brick and masonry, restoration work and more. The GA4542C is equipped with SJS II, a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop. SJS II is also features a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use. The 12 Amp motor delivers 2,800-11,000 RPM for versatility and maximum productivity. Labyrinth construction protects the motor with a complex set of channels, prohibiting dust and contamination from entering the motor. Additional protection features include a Zig-Zag epoxy applied to both sides of the armature coil and a powder-coating to the field. This forms a barrier under rotation and is engineered to protect from dust and debris penetration for longer tool life.

  • Powerful 12.0 Amp motor delivers more output and variable (2,800 - 11,000) RPM
  • SJS II provides a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop
  • SJS II provides a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use
  • Vibration absorbing side handle provides increased comfort on the job
  • Electronic controller provides constant speed control which automatically applies additional power to the motor to maintain speed under load
  • Electronic controller provides soft start which suppresses start-up reaction for smooth start-ups and longer gear life
  • Electronic controller provides an electronic current limiter which helps protect the motor from overload
  • Variable speed control dial enables user to match the speed to the application
  • Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life
  • Spiral bevel gears for smoother rotations and a more efficient transfer of energy
  • Tool-less wheel guard for easy adjustment
  • Slide switch with lock-on for continuous use
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Key Features

Product Overview
Key Features
  • Has SJSII, designed to reduce vibration felt by the user
  • SJSII Technology Reduces Vibration for Operator Comfort
  • Shop the Metalworking Tools
The Makita 4-1/2 in. SJS II High Power Angle Grinder (GA4542C) combines power, convenience, comfort and motor-protection features for longer-lasting industrial performance. It is ideal for cutting, grinding ferrous metal, paint and rust removal, shipyard maintenance, metal polishing, general steel grinding, auto repair work, cutting brick and masonry, restoration work and more. The GA4542C is equipped with SJS II, a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop. SJS II is also features a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use. The 12 Amp motor delivers 2,800-11,000 RPM for versatility and maximum productivity. Labyrinth construction protects the motor with a complex set of channels, prohibiting dust and contamination from entering the motor. Additional protection features include a Zig-Zag epoxy applied to both sides of the armature coil and a powder-coating to the field. This forms a barrier under rotation and is engineered to protect from dust and debris penetration for longer tool life.
  • Powerful 12.0 Amp motor delivers more output and variable (2,800 - 11,000) RPM
  • SJS II provides a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop
  • SJS II provides a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use
  • Vibration absorbing side handle provides increased comfort on the job
  • Electronic controller provides constant speed control which automatically applies additional power to the motor to maintain speed under load
  • Electronic controller provides soft start which suppresses start-up reaction for smooth start-ups and longer gear life
  • Electronic controller provides an electronic current limiter which helps protect the motor from overload
  • Variable speed control dial enables user to match the speed to the application
  • Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life
  • Spiral bevel gears for smoother rotations and a more efficient transfer of energy
  • Tool-less wheel guard for easy adjustment
  • Slide switch with lock-on for continuous use
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Product Overview

  • Has SJSII, designed to reduce vibration felt by the user
  • SJSII Technology Reduces Vibration for Operator Comfort
  • Shop the Metalworking Tools
Model #: GA4542C
Internet #: 206058501

The Makita 4-1/2 in. SJS II High Power Angle Grinder (GA4542C) combines power, convenience, comfort and motor-protection features for longer-lasting industrial performance. It is ideal for cutting, grinding ferrous metal, paint and rust removal, shipyard maintenance, metal polishing, general steel grinding, auto repair work, cutting brick and masonry, restoration work and more. The GA4542C is equipped with SJS II, a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop. SJS II is also features a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use. The 12 Amp motor delivers 2,800-11,000 RPM for versatility and maximum productivity. Labyrinth construction protects the motor with a complex set of channels, prohibiting dust and contamination from entering the motor. Additional protection features include a Zig-Zag epoxy applied to both sides of the armature coil and a powder-coating to the field. This forms a barrier under rotation and is engineered to protect from dust and debris penetration for longer tool life.

  • Powerful 12.0 Amp motor delivers more output and variable (2,800 - 11,000) RPM
  • SJS II provides a mechanical gear drive system to help prevent motor and gear damage by dampening the force on the gear when the wheel is forced to stop
  • SJS II provides a leaf spring and cam gear drive mechanism that is engineered to reduce vibration for increased operator comfort during extended use
  • Vibration absorbing side handle provides increased comfort on the job
  • Electronic controller provides constant speed control which automatically applies additional power to the motor to maintain speed under load
  • Electronic controller provides soft start which suppresses start-up reaction for smooth start-ups and longer gear life
  • Electronic controller provides an electronic current limiter which helps protect the motor from overload
  • Variable speed control dial enables user to match the speed to the application
  • Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life
  • Spiral bevel gears for smoother rotations and a more efficient transfer of energy
  • Tool-less wheel guard for easy adjustment
  • Slide switch with lock-on for continuous use
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar

Compare Similar Products
Brand Makita Makita Makita Makita
Name 7.5 Amp Corded 4-1/2 in. Paddle Switch Grinder with Aluminum Case, Diamond Blade and Grinding Wheels 7.5-Amp 4-1/2 in. Corded Angle Grinder with AC/DC Switch (2-Pack) 12 Amp 4-1/2 in. SJS II High-Power Angle Grinder 12 Amp 5 in. SJS High-Power Angle Grinder
Price
$81.00
$99.00
$147.11
$169.00
Ratings (225) (42) (9) (13)
Amperage (amps) 7.5 7.5 12 12
Power Tool Features Case Included,Grinding Wheel Included,Lock On Switch,No Tool Wheel Change,Second Handle Included Adjustable Handle Position,Grinding Wheel Included,Lock On Switch,Second Handle Included Adjustable Handle Position,Grinding Wheel Included,Lock On Switch,Second Handle Included,Spindle Lock,Variable Speed Grinding Wheel Included,Lock On Switch,No Tool Wheel Change,Second Handle Included,Variable Speed
Cordless/ Corded Corded Corded Corded Corded
Wheel Diameter (in.) 4.5 in 4.5 in 4.5 5 in
View Product View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
11.87
Product Height (in.)
4.56
Product Width (in.)
5.5
Wheel Diameter (in.)
4.5

Details

Amperage (amps)
12
Arbor Size
5/8" x 11 UNC
Color Family
Teal
Condition
New
Cord Length (ft.)
8.2
Corded Tool Type
Angle Grinder
Cordless/ Corded
Corded
Electronic Speed Control
Yes
Grinding Wheel Included
Yes
Maximum Speed (rpm)
11000
Power Tool Features
Adjustable Handle Position,Grinding Wheel Included,Lock On Switch,Second Handle Included,Spindle Lock,Variable Speed
Product Weight (lb.)
5.4lb
Returnable
90-Day
Spindle Lock
Yes
Tools Product Type
Power Tool
Variable Speed
Yes

Warranty / Certifications

Certifications and Listings
1-UL Listed
Manufacturer Warranty
1-year warranty

Specifications

Dimensions

Product Depth (in.)
11.87
Product Height (in.)
4.56
Product Width (in.)
5.5
Wheel Diameter (in.)
4.5

Details

Amperage (amps)
12
Arbor Size
5/8" x 11 UNC
Color Family
Teal
Condition
New
Cord Length (ft.)
8.2
Corded Tool Type
Angle Grinder
Cordless/ Corded
Corded
Electronic Speed Control
Yes
Grinding Wheel Included
Yes
Maximum Speed (rpm)
11000
Power Tool Features
Adjustable Handle Position,Grinding Wheel Included,Lock On Switch,Second Handle Included,Spindle Lock,Variable Speed
Product Weight (lb.)
5.4lb
Returnable
90-Day
Spindle Lock
Yes
Tools Product Type
Power Tool
Variable Speed
Yes

Warranty / Certifications

Certifications and Listings
1-UL Listed
Manufacturer Warranty
1-year warranty

Questions & Answers

is this grinder recamended for polishing granite

is this grinder recamended for polishing granite
Asked by: ltf
It is great for all different applications because of the speed control, from slow blade sharpening speeds to wide open power. Critical components are very well protected from dust, grit, and chips.
Answered by: JS
Date published: 2018-11-13

does this grinder come with a case

Asked by: makitaman
No, it does not.
Answered by: Handyman
Date published: 2019-06-14

What is the difference between the 4 1/2 SJS 9564CV and 4 1/2 SJS2 GA4542C? Other than the side handle and price.

Asked by: Hollandsworth
The major differences between the Makita GA4542C and the Makita 9564CV is that the Makita GA4542C has a Max. RPM of 11,000 while the Makita 9564CV has a Max. RPM of 10,500. The Makita GA4542C also has the added benefits of the SJS™II Technology which Reduces Vibration for Operator Comfort.
Answered by: MakitaTeam
Date published: 2019-01-23
  • y_2019, m_8, d_19, h_23CST
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Customer Reviews

12 Amp 4-1/2 in. SJS II High-Power Angle Grinder is rated 5.0 out of 5 by 9.
Rated 5 out of 5 by from Exactly what I expected. Being a professional Tile Setter for... Exactly what I expected. Being a professional Tile Setter for 30 years you can't beat a Makita
Date published: 2019-05-25
Rated 5 out of 5 by from Makita quality is hard to beat. I love the variable speed feature. Makita quality is hard to beat. I love the variable speed feature.
Date published: 2019-06-14
Rated 5 out of 5 by from Great Grinder I have a 4" Makita grinder that I bought new in 1978 and still use it today. I was hesitant to buy this one, as I didn't think I needed all the features it has. Boy was I wrong. I love everything from the soft start to the variable speed. This grinder also is a lot smoother than the old one and cuts down on pain and soreness in my forearms during extended use. I really like this grinder and if it lasts as long as my other one...maybe one of my grandchildren will get to use it!
Date published: 2016-02-23
Rated 5 out of 5 by from Power to spare! This is my first electric angle grinder, and I've only used it a few times so far but man, what a pleasure to use. Very smooth, even under heavy load. Spin-up is gradual so as to prevent the tool from torquing out of your hand, and I very much appreciate the safety disconnect that prevents it from powering on when plugging it in, if the tool was accidentally left or put in the on position when unplugged. I haven't gotten it to stall yet; it's more powerful than my air grinder, that's for sure. The variable speed is very helpful for more delicate operations which require a lighter touch.
Date published: 2015-12-16
Rated 5 out of 5 by from I really love the grinder and would love to continue... I really love the grinder and would love to continue using it in my everyday work, but... it's been stolen from me. Unfortunately I didn't record the serial number in order to report it stolen. I'm wondering if youre able to look back through my order and give me the serial number? Thank you
Date published: 2018-12-15
Rated 5 out of 5 by from My first Angle grinder. Excellent product. Never disappointed in Makita... My first Angle grinder. Excellent product. Never disappointed in Makita quality.
Date published: 2019-02-19
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-02-06
Rated 5 out of 5 by from Great grinder Nice heavy duty grinder. I like how it has a dial to adjust the speed and how it has a locking thumb button instead of the huge padel handle trigger
Date published: 2017-03-14
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