Makita GA5020C Corded 5″ Angle Grinder with SJS & Electronic Control

The Makita GA5020C 5″ Corded Angle Grinder with SJS and Electronic Control is built for professionals who need both power and safety in demanding applications. Featuring Makita’s proprietary SJS (Super Joint System) technology, this 12.5-amp grinder helps prevent gear damage and user injury during wheel lock-up. Paired with electronic features like a soft start, constant speed control, and an electronic current limiter, the GA5020C is designed to tackle heavy-duty grinding, cutting, and material prep without sacrificing control or tool longevity.

This grinder is especially well-suited for metalworkers, welders, and industrial maintenance crews who need reliable performance in tough environments. The anti-restart feature and LED indicator provide added safety, while the rotatable gear housing and side handle offer flexibility in positioning—ideal for awkward angles or detailed work. With a labyrinth construction and dual-layer motor protection, this tool is made to withstand dust, debris, and long hours on site.

Makita Corded 5″ Angle Grinder with SJS & Electronic Control At a Glance

• SJS Technology: Reduces gear damage and operator fatigue by disengaging motor drive if the wheel locks up.
• Electronic Current Limiter: Prevents motor overload and burnout under heavy workloads.
• Soft Start Function: Increases motor speed gradually, preventing start-up torque shock and improving control.
• Constant Speed Control: Keeps RPM consistent even under load, delivering smoother, more efficient cuts or grinds.
• Anti-Restart Protection: Blocks accidental start-up if power is reconnected while the switch is still engaged.
• LED Indicator: Confirms tool is powered and signals activation of anti-restart system.
• Labyrinth Construction: Complex dust protection system extends tool life in gritty environments.
• Durable Motor Protection: Armature features Zig-Zag varnish and powdered field coils to resist debris wear.
• Rotatable Gear Housing: Adjusts in 90° increments for optimal grip position during edge, corner, or overhead work.
• Ergonomic Grip and Side Handle: Vibration-reducing rubber handle and removable side grip for operator comfort and stability.

Markets

• Metal Fabrication and Structural Steel: Ideal for cutting, grinding, and surface prepping heavy gauge metal and structural components.
• Welding and Industrial Repair: Excellent for weld cleanup, beveling, and prepping surfaces for fabrication or heavy-duty repair.
• Construction and Commercial Sites: Built for tough daily use on concrete forms, angle iron, rebar, and jobsite modifications.
• Maintenance and Equipment Repair: Reliable grinder for breakdown repair and shop-based refurbishment of industrial equipment.
• Municipal and Utility Crews: A dependable tool for field-based metal cutting, guardrail work, and repair applications.
• Trade Schools and Apprenticeship Programs: A safe and professional-grade model for advanced instruction with key safety features built in.
• General Contractors and Mobile Welders: Combines safety, portability, and performance for trades working on varying job types and conditions.

Whether used for structural steel work, equipment repair, or heavy fabrication, the GA5020C gives tradespeople a powerful and smart angle grinder with intelligent safeguards and operator-focused features.

Makita GA5020C Corded 5″ Angle Grinder with SJS & Electronic Control Features

• SJS (Super Joint System) prevents kickback during wheel lock up for optimal tool and operator protection
• Electronic current limiter prevents motor burnout due to overloading
• Soft start feature gradually increases speed to eliminate start up shock
• Constant speed control maintains constant speed under heavy load
• Anti-Restart feature prevents accidental start up of tool if switch is locked in the on position
• LED Light indicates active power supply and activation of anti-restart feature
• Labyrinth construction features a complex series of channels to prevent penetration of dust and debris into the field and armature for maximum operational life
• Motor winding protection features “Zig-Zag” varnish on the armature and hardened powder on the field coils to act as an impenetrable barrier to dust and debris
• Rotatable gear housing can be positioned at every 90^o for optimal positioning
• Removable side handle can be mounted on left or right side of too
• Ergonomic soft rubber grip design for vibration absorption and comfortable operation

Makita GA5020C Corded 5″ Angle Grinder with SJS & Electronic Control Includes

• Side Handle (158237-4)
• Lock Nut Wrench 28 (782424-9)
• Toolless Wheel Cover(123145-8)
• 5″ Depressed Center Wheel (1 Ea. A-95962-25)
• Inner Flange (224399-1)
• Lock Nut 5/8-45(224568-4)

Makita GA5020C Corded 5″ Angle Grinder with SJS & Electronic Control Specifications

• Grinding/Sanding Capacity: 5″ (125 mm)
• Sanding Disc Capacity: 5″ (125 mm)
• Wire Cup Brush Capacity: 3-1/2″ (90 mm)
• Spindle Thread: 5/8″ – 11 UNC
• No Load Speed: 11,000 RPM
• Amperage: 12.5 A (120V)
• Vibration Level: 9.5 m/s²
• Noise Level: 90 dB(A)
• Overall Length: 15-3/8″ (390 mm)
• Net Weight: 6.4 lbs (2.9 kg)
• Shipping Dimensions: 18.43″ x 6.1″ x 5.12″
• Shipping Weight: 9.04 lbs

Why Customers Choose the Makita Corded 5″ Angle Grinder with SJS & Electronic Control

Tradespeople who need a heavy-duty 5-inch grinder that combines raw power with built-in safety features trust the GA5020C to get the job done. From cutting through thick steel to grinding welds smooth, it delivers torque and stability while reducing risk with features like anti-restart, SJS, and soft start. It’s the right tool when downtime isn’t an option and control matters as much as performance.

Common keywords searched for include Makita SJS angle grinder, GA5020C 5-inch grinder, high power corded grinder, angle grinder with electronic control, and Makita grinder with safety features. Whether on a site, in a shop, or in a training bay, this grinder holds its own under pressure.