1. Introducció
This manual provides essential information for the safe and effective operation, setup, and maintenance of your Makita 9557PBX1 4-1/2" Paddle Switch Cut-Off/Angle Grinder Tool with Case. This powerful 7.5 AMP angle grinder is designed for cutting, grinding, and polishing applications, offering high performance in a compact and durable design.

Figure 1: Makita 9557PBX1 Angle Grinder Tool with Case and accessories.
2. Producte acabatview
The Makita 9557PBX1 is engineered for industrial performance, combining a robust motor with user-friendly features. Key components and features include:
- Potent 7.5 AMP Motor: Delivers high output power for demanding tasks.
- Disseny compacte: Weighs only 4.5 pounds for enhanced maneuverability.
- Interruptor de paleta: Features an extra-large paddle switch for comfortable operation and a lock-on/off feature for continuous use.
- Construcció del laberint: Seals and protects the motor and bearings from dust and debris, extending tool life.
- Protective Zig-Zig Varnish: Seals the armature from dust and debris.
- Interruptor AC/DC: Allows use with alternative power sources.
- Metal Gear Housing: Ensures durability.
- Tool-less Wheel Guard Adjustment: For easy and quick adjustments.
2.1 Components inclosos
- Makita 9557PB Angle Grinder
- Tirador lateral
- 4-1/2" Diamond Blade, Turbo, General Purpose (A-94552)
- (5) 4-1/2" Grinding Wheels (A-95956)
- 4-1/2" Wheel Guard (125273-5)
- 4-1/2" Cut-Off Wheel Guard (135103-2)
- Lock Nut (193465-4)
- Lock Nut Wrench (782422-3)
- Inner Flange (224399-1)
- Caixa d'alumini
Vídeo 1: Producte acabatview of the Makita 9557PBX1 Angle Grinder, showcasing les seves característiques i el seu disseny compacte.

Figure 2: The Makita 9557PBX1 Angle Grinder with the side handle attached, illustrating its ergonomic design.

Figure 3: A close-up of the included Makita 4-1/2" Diamond Blade, Turbo, General Purpose (A-94552).

Figura 4: Un example of the included Makita 4-1/2" Grinding Wheel (A-95956).
3. Configuració
Before operating the grinder, ensure all components are correctly assembled and secured.
3.1 Fixació de la nansa lateral
The side handle can be installed on either side of the tool for operator convenience. Simply screw the handle into the threaded opening on the side of the gear housing until it is secure.
3.2 Installing/Changing Wheels and Guards
- Assegureu-vos que el molinet estigui desendollat de la font d'alimentació.
- Press the spindle lock button located on the gear housing to prevent the spindle from rotating.
- Use the provided lock nut wrench (782422-3) to loosen and remove the lock nut and outer flange.
- Place the desired 4-1/2" grinding wheel or diamond blade onto the inner flange, ensuring the label side faces the tool.
- Re-attach the outer flange and tighten the lock nut securely with the wrench while holding the spindle lock button.
- To adjust the wheel guard, loosen the clamping screw, position the guard for optimal protection, and then re-tighten the screw. The tool-less design allows for quick adjustments.
Video 2: Demonstrates key features of the Makita 9557PBX1, including handle attachment, wheel changes, and paddle switch operation.
4. Funcionament
Always wear appropriate personal protective equipment (PPE), including safety glasses, gloves, and hearing protection, when operating the grinder.
4.1 Engegada/apagada
The Makita 9557PBX1 features an extra-large paddle switch for activation. To start the grinder, first depress the small lock-off switch (safety toggle) and then squeeze the main paddle switch. Releasing the paddle switch will turn the tool off.
4.2 Funcionament continu
For continuous operation, activate the paddle switch as described above, and then push in the lock-on button located at the back of the paddle. To release from continuous operation, simply squeeze and release the paddle switch.
4.3 AC/DC Switch
The grinder is equipped with an AC/DC switch, allowing it to be used with various power sources. Ensure the switch is set correctly for your power supply before plugging in the tool.

Figure 5: The Makita 9557PBX1 Angle Grinder actively cutting metal, demonstrating its operational capability.
5. Manteniment
Regular maintenance ensures the longevity and optimal performance of your Makita angle grinder.
5.1 Protecció del motor
The grinder features labyrinth construction and protective zig-zig varnish to shield the motor and bearings from dust and debris. Periodically inspect the air vents for blockages and clean them to maintain proper airflow and cooling.
5.2 Neteja general
After each use, wipe down the tool with a clean, dry cloth. Remove any accumulated dust or debris from the housing and around the spindle area. Do not use solvents or harsh chemicals.
6. Solució De Problemes
If you encounter issues with your Makita 9557PBX1, consider the following general troubleshooting steps:
- L'eina no s'inicia: Ensure the tool is securely plugged into a functioning power outlet. Check the AC/DC switch setting. Verify that the paddle switch and lock-off switch are correctly engaged.
- Rendiment reduït: Inspect the grinding wheel or blade for wear or damage and replace if necessary. Ensure the wheel is securely mounted. Check for excessive dust buildup in the motor vents.
- Soroll o vibració inusuals: Immediately stop the tool. Check for loose components, damaged wheels, or foreign objects. If the issue persists, discontinue use and contact customer support.
For more complex issues, refer to the official Makita service center or authorized dealer.
7. Especificacions
| Característica | Especificació |
|---|---|
| Marca | Makita |
| Número de model | 9557PBX1 |
| Font d'alimentació | Elèctric amb cable |
| Voltage | 120 Volts |
| Wattage | 900 watts |
| Motor Ampedat | 7.5 AMP |
| Velocitat de rotació màxima | 11000 RPM |
| Diàmetre de la roda | 4-1/2 polzades |
| Pes de l'article | 12.47 pounds (Tool with Case) |
| Dimensions del producte | 15.47 cm de llargada x 11.38 cm d'amplada x 6.1 cm d'alçada |
| Material | Plàstic (habitatge) |
| Característiques especials | Compacte |
8. Garantia i assistència
The Makita 9557PBX1 Angle Grinder comes with a Garantia limitada d'1 any. For warranty claims, technical support, or service inquiries, please contact Makita customer service or visit an authorized Makita service center. Keep your purchase receipt as proof of purchase for warranty validation.
Per obtenir més informació i suport, podeu visitar el Botiga Makita a Amazon.





