Makita 4-1/2" SJS II Angle Grinder, 12 AMP, 2,800-11,000 RPM, var. spd., 5/8"-11, no lock-off, lock-on. Manufacturer's Product Number: MK-GA4542C.

The Makita 4-1/2” 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.

Features

• Powerful 12.0 AMP motor delivers more output and variable (2,800 - 11,000) RPM
• 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 in high torque applications
• Variable speed control dial enables user to match the speed to the application
• Labyrinth construction seals and protects the drive gear and bearings from dust and debris for increased durability
• Motor fan is designed with enlarged fins for increased air flow and a cooler running motor
• Complete zig-zag epoxy is applied to both sides of the armature coil and a powder coating to the field for protection from debris and longer tool life

Specs

• Wheel Diameter : 4-1/2"
• AMPS : 12
• No Load Speed (variable speed) : 2,800 - 11,000 RPM
• Spindle Type : 5/8" - 11 UNC
• Lock-On Switch : Yes
• Lock-Off Switch : No
• Switch Type : Body grip/slide
• Overall Length : 11-7/8"
• Net Weight : 5.4 lbs.
• Variable speed dial : Yes
• Power Type : Corded
• Bind-Up Control : No
• Shipping Weight : 8 lbs.
• UPC Code : 088381-699761

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles. For more information, go to www.p65warnings.ca.gov