Operation, Grinding and sanding operation

WARNING:

•Always use supplied guard when flex wheel is on

tool. Wheel can shatter during use and guard helps to reduce chances of personal injury.

Follow instructions for depressed center grinding wheel/Multi-disc but also use plastic pad over wheel. See order of assembly on accessories page in this manual.

Installing or removing abrasive disc (optional accessory)

	1	1.	Lock nut
	1	1.	Lock nut
	2	2. Abrasive disc
3		3.	Rubber pad

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NOTE:

•Use sander accessories specified in this manual.

These must be purchased separately.

Mount the rubber pad onto the spindle. Fit the disc on the rubber pad and screw the lock nut onto the spindle. To tighten the lock nut, press the shaft lock firmly so that the spindle cannot revolve, then use the lock nut wrench and securely tighten clockwise.

To remove the disc, follow the installation procedure in reverse.

OPERATION

WARNING:

•It should never be necessary to force the tool. The weight of the tool applies adequate pressure. Forcing and excessive pressure could cause dangerous wheel breakage.

•ALWAYS replace wheel if tool is dropped while grinding.

•NEVER bang or hit grinding disc or wheel onto work.

•Avoid bouncing and snagging the wheel, especially when working corners, sharp edges etc. This can cause loss of control and kickback.

•NEVER use tool with wood cutting blades and other sawblades. Such blades when used on a grinder frequently kick and cause loss of control leading to personal injury.

CAUTION:

•Make the depth of a single cut up to 5 mm. Adjust pressure on the tool so that the tool does not slow down during the operation.

•After operation, always switch off the tool and wait until the wheel has come to a complete stop before putting the tool down.

•If the tool is operated continuously until the battery cartridge has discharged, allow the tool to rest for 15 minutes before proceeding with a fresh battery.

Grinding and sanding operation

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ALWAYS hold the tool firmly with one hand on housing and the other on the side handle. Turn the tool on and then apply the wheel or disc to the workpiece.

In general, keep the edge of the wheel or disc at an angle of about 15 degrees to the workpiece surface.

During the break-in period with a new wheel, do not work the grinder in the B direction or it will cut into the workpiece. Once the edge of the wheel has been rounded off by use, the wheel may be worked in both A and B direction.

Operation with diamond wheel (optional accessory )

CAUTION:

•Do not "jam" the wheel or apply excessive pressure. Do not attempt to make an excessive depth of cut. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback, wheel breakage and overheating of the motor may occur.

•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.

•A diamond wheel shall be operated perpendicular to the material being cut.

BGA452, BGA450 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.