•

Do not start the cutting operation in the workpiece.

 

Let the wheel reach full speed and carefully enter

 

into the cut moving the tool forward over the

 

workpiece surface. The wheel may bind, walk up

 

or kickback if the power tool is started in the

 

workpiece.

•

During cutting operations, never change the angle

 

of the wheel. Placing side pressure on the cut-off

 

wheel (as in grinding) will cause the wheel to crack

 

and break, causing serious personal injury.

1 2

007226

1.Holder cap cover

2.Screwdriver

•

A diamond wheel shall be operated perpendicular

 

to the material being cut.

MAINTENANCE

Use a screwdriver to remove the brush holder caps. Take out the worn carbon brushes, insert the new ones and secure the brush holder caps.

CAUTION:

•Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection or maintenance.

•Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result.

1

2

007223

1.Brush holder cap

2.Screwdriver

1

2

007222

1.Exhaust vent

2.Inhalation vent

Reinstall the holder cap cover on the tool.

To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized Service Centers, always using Makita replacement parts.

OPTIONAL ACCESSORIES

CAUTION:

The tool and its air vents have to be kept clean. Regularly clean the tool's air vents or whenever the vents start to become obstructed.

Replacing carbon brushes

1. Limit mark

1

001145

Remove and check the carbon brushes regularly. Replace when they wear down to the limit mark. Keep the carbon brushes clean and free to slip in the holders. Both carbon brushes should be replaced at the same time. Use only identical carbon brushes.

Insert the top end of slotted bit screwdriver into the notch in the tool and remove the holder cap cover by lifting it up.

• These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.

If you need any assistance for more details regarding these accessories, ask your local Makita Service Center.

•Wheel guard (Wheel cover) For depressed center wheel / Multi disc

•Wheel guard (Wheel cover) For abrasive cut-off wheel / diamond wheel

•Depressed center wheels

•Abrasive cut-off wheels

•Multi discs

•Diamond wheels

•Wire cup brushes

•Wire bevel brush 85

•Abrasive discs

•Inner flange

•Lock nut For depressed center wheel / abrasive cut-off wheel / multi disc / diamond wheel

•Lock nut For abrasive disc

12

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Makita BGA450, BGA402, BGA452 instruction manual Maintenance, Optional Accessories, Replacing carbon brushes
Page 11 Page 13

BGA452, BGA450, BGA402 specifications

The Makita BGA402, BGA450, and BGA452 are a trio of powerful cordless angle grinders designed for both professional tradespeople and DIY enthusiasts. These models offer a blend of performance and versatility that caters to a wide range of applications, including cutting, grinding, and polishing. Each model comes with a unique set of features and technologies that enhance user experience and efficiency.

The BGA402 is powered by a robust 18V lithium-ion battery, providing the endurance required for demanding tasks. It boasts a compact design, making it easy to maneuver in tight spaces. One of its standout features is the electronic brake that halts the rotation of the wheel within seconds of releasing the trigger, significantly improving safety. Additionally, its rubberized grip offers comfort during extended use, reducing fatigue. This model also features a spindle lock for easy wheel changes, saving valuable time on the job site.

The BGA450 takes it a step further with its increased power and performance. With a no-load speed of 10,000 RPM, it is ideal for heavy-duty applications. This model incorporates Makita's Anti-Restart Function, which prevents accidental start-up after a power interruption, providing added safety. The BGA450 also features a tool-less wheel guard adjustment, allowing users to quickly adapt the guard position based on their task. Its lightweight design contributes to user-friendly operation, ensuring that professionals can work efficiently without strain.

On the other hand, the BGA452 combines the best attributes of its predecessors while introducing enhanced runtime and efficiency. Equipped with a more efficient brushless motor, this model delivers longer use between charges, ideal for high-demand projects. The onboard LED indicator helps keep track of battery status, ensuring users can plan their work without unexpected interruptions. With a two-position side handle, the BGA452 offers versatility for left and right-handed users, maximizing comfort and control during operation.

In summary, Makita's BGA402, BGA450, and BGA452 angle grinders are engineered to provide superior performance, safety, and ease of use. Their innovative technologies, such as electronic brakes, anti-restart functions, and lightweight designs, position them as top choices in the cordless grinder market. Whether for professional use or personal projects, these models deliver the power and efficiency that users demand, making them valuable tools in any toolkit.
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