Maintenance, Operation with abrasive cut-off wheel

Operation with wire cup brush (optional accessory)

1. Wire cup brush

onto spindle and tighten with the wrenches.

When using wire wheel brush, avoid applying too much pressure which causes over bending of wires, leading to premature breakage.

Operation with abrasive cut-off wheel

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CAUTION:

•	Check operation of brush by running tool with no
	load, insuring that no one is in front of or in line with
	brush.

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WARNING:

1.Lock nut

2.Abrasive cut-off wheel

3.Inner flange

4.Wheel guard for cut-off wheel

•	Do not use brush that is damaged, or which is out of

balance. Use of damaged brush could increase potential for injury from contact with broken brush wires.

Remove the battery cartridge from the tool and place it upside down allowing easy access to spindle. Remove any accessories on spindle. Thread wire cup brush onto spindle and tighten with supplied wrench. When using brush, avoid applying too much pressure which causes over bending of wires, leading to premature breakage.

Operation with wire wheel brush (optional accessory)

1. Wire wheel brush

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CAUTION:

•Check operation of wire wheel brush by running tool with no load, insuring that no one is in front of or in line with the wire wheel brush.

•Do not use wire wheel brush that is damaged, or which is out of balance. Use of damaged wire wheel brush could increase potential for injury from contact with broken wires.

•ALWAYS use guard with wire wheel brushes,

assuring diameter of wheel fits inside guard. Wheel can shatter during use and guard helps to reduce chances of personal injury.

Remove the battery cartridge from the tool and place it upside down allowing easy access to spindle. Remove any accessories on spindle. Thread wire wheel brush

•When using an abrasive cut-off wheel, be sure to use only the special wheel guard designed for use with cut-off wheels.

•NEVER use cut-off wheel for side grinding.

•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.

•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.

MAINTENANCE

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.

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.