1. Introducció
Thank you for choosing the WORKPRO 20V Cordless Angle Grinder. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before first use and keep it for future reference.
This powerful and versatile tool is designed for various tasks including grinding, derusting, cutting, and polishing, offering cordless convenience and high performance.
2. Instruccions de seguretat
Seguiu sempre les precaucions de seguretat bàsiques quan utilitzeu eines elèctriques per reduir el risc d'incendi, descàrrega elèctrica i lesions personals.
Advertències generals de seguretat d'eines elèctriques:
- Seguretat de l'àrea de treball: Mantingueu la zona de treball neta i ben il·luminada. No feu servir eines elèctriques en atmosferes explosives, com ara en presència de líquids, gasos o pols inflamables.
- Seguretat elèctrica: Eviteu el contacte corporal amb superfícies connectades a terra. No exposeu les eines elèctriques a la pluja ni a condicions humides.
- Seguretat personal: Stay alert, watch what you are doing and use common sense. Always wear eye protection and hearing protection. Use appropriate personal protective equipment (PPE) such as dust mask, non-skid safety shoes, hard hat, or hearing protection for appropriate conditions.
- Ús i cura de les eines elèctriques: No forceu l'eina elèctrica. Feu servir l'eina elèctrica adequada per a la vostra aplicació. Desconnecteu la bateria de l'eina elèctrica abans de fer qualsevol ajust, canviar accessoris o guardar eines elèctriques.
- Ús i cura de l'eina de la bateria: Recarrega només amb el carregador especificat pel fabricant. Utilitza eines elèctriques només amb bateries específicament designades.
Specific Angle Grinder Safety Warnings:
- Aquesta eina elèctrica està pensada per funcionar com a esmoladora, polidora, raspall de filferro o eina de tall. Llegiu totes les advertències, instruccions, il·lustracions i especificacions de seguretat proporcionades amb aquesta eina elèctrica.
- No utilitzeu accessoris que no siguin dissenyats i recomanats específicament pel fabricant de l'eina.
- Assegureu-vos que l'accessori estigui correctament muntat i ajustat abans d'utilitzar-lo.
- Always use the correct protective guard for the type of work being performed (grinding or cutting).
- Do not operate the tool without the guard properly installed.
- Mantingueu una subjecció ferma de l'eina elèctrica amb les dues mans.
- Mantingueu les mans allunyades de l'accessori giratori.
- Aneu amb compte amb el rebot, que és una reacció sobtada a una roda giratòria pinçada o enganxada.
- Do not apply excessive pressure during cutting, as this can activate the protection and stop the machine. If this occurs, turn off the switch and restart immediately.
3. Contingut del paquet
Carefully unpack all items and ensure you have received all components listed below. If any items are missing or damaged, please contact WORKPRO customer service.
- 1 x WORKPRO Cordless Angle Grinder
- 1 x 20V 4.0 Ah Lithium-ion Battery
- 1 carregador ràpid
- 5 x Cutting Discs (Ø125mm)
- 2 x Protective Guards (for cutting and grinding)
- 1 x Multi-position Auxiliary Handle
- 1 x clau anglesa

Image 3.1: The WORKPRO 20V Cordless Angle Grinder along with its complete set of accessories, including the battery, charger, cutting discs, protective guards, auxiliary handle, and wrench.
4. Producte acabatview
Familiarize yourself with the different parts of your WORKPRO Angle Grinder before operation.

Image 4.1: Detailed diagram showing the key components of the angle grinder, including the rubber auxiliary handle, safety lock, spindle lock, metal safety wheel guard for grinding, battery, LED indicator, and the quick-change guard mechanism.
- Rubber Auxiliary Handle: Proporciona un adherència i un control addicionals.
- Bloqueig de seguretat: Evita l'arrencada accidental.
- Bloqueig de l'eix: S'utilitza per bloquejar el fus per facilitar els canvis de disc.
- Metal Safety Wheel Guard (for Grinding): Protects the user during grinding operations.
- Bateria: 20V 4.0Ah Lithium-ion battery for cordless operation.
- Indicador LED: Mostra el nivell de càrrega de la bateria.
- Change The Guard Without Tool: Quick-release mechanism for changing protective guards.
- Metal Safety Wheel Guard (for Cutting): Protects the user during cutting operations.
- Cut-Off Wheels: Discs for cutting various materials.
- Carregador: Fast charger for the 20V battery.
- Llau clau: Wrench for securing and removing discs.
5. Configuració
5.1 Càrrega de la bateria
- Insert the 20V 4.0Ah Lithium-ion battery into the fast charger.
- Plug the charger into a standard electrical outlet (Type C - Two round pins, French type).
- The LED indicator on the battery will show the charging status. Ensure the battery is fully charged before first use.
5.2 Fixació de la nansa auxiliar
- The auxiliary handle can be attached in multiple positions (left, right, or top) for optimal comfort and control.
- Screw the rubber auxiliary handle firmly into the desired threaded hole on the grinder head.

Image 5.1: Illustration of the 3-position anti-vibration and non-slip rubber handle, demonstrating its adjustability for user comfort and control.
5.3 Installing/Changing Discs and Protective Guards
- Always ensure the battery is removed before changing discs or guards.
- Premeu i manteniu premut el botó de bloqueig del fus per evitar que el fus giri.
- Use the provided wrench to loosen the flange nut and remove the old disc (if any).
- Place the desired cutting or grinding disc onto the spindle, ensuring it is centered.
- Replace the flange nut and tighten it securely with the wrench while holding the spindle lock.
- Select the appropriate protective guard for your task (cutting or grinding). The guards feature a quick-change mechanism.
- Attach the guard by aligning it with the grinder head and snapping it into place. Ensure it is securely fastened and does not tilt.

Image 5.2: The angle grinder shown with the included 5 metal/stainless cut-off wheels and 2 quick-change protective guards, one for cut-off wheels and one for flap discs.
6. Instruccions de funcionament
6.1 Engegada/apagada
- Introduïu la bateria carregada a la ranura de la bateria fins que encaixi al seu lloc.
- To start the grinder, locate the switch in the middle-top position. Push the switch to the right, then push it upwards. This two-step operation is a safety feature to prevent accidental startup.
- To turn off the grinder, simply release the switch.

Imatge 6.1: Primer pla view of the angle grinder's middle switch, highlighting the two-step operation (1. push right, 2. push up) for enhanced safety and the cruise speed function.
6.2 Tècniques de mòlta i tall
- Hold the grinder firmly with both hands, using the auxiliary handle for stability.
- Allow the disc to reach full speed (7500 rpm) before contacting the workpiece.
- For grinding, apply light, even pressure and move the grinder smoothly across the surface.
- For cutting, make shallow passes, gradually increasing the depth. Do not force the tool.
- If the machine stops due to excessive pressure, immediately turn off the switch, remove the pressure, and restart the machine.
- Always direct sparks away from yourself and others, and away from flammable materials.

Image 6.2: A collage demonstrating the angle grinder in action for different applications, including grinding metal, cutting pipes, and surface preparation, with sparks visible during operation.
7. Manteniment
7.1 Neteja
- After each use, disconnect the battery and clean the tool with a soft, dry cloth.
- Remove any dust or debris from the ventilation openings to prevent overheating.
- No utilitzeu aigua ni netejadors químics.
7.2 Cura de la bateria
- Emmagatzemeu la bateria en un lloc fresc i sec, lluny de la llum solar directa i de temperatures extremes.
- Do not store the battery in a discharged state for extended periods. Recharge it periodically if not in use.
- No exposeu la bateria a l'aigua ni al foc.
7.3 Substitució del disc
- Replace discs when they become worn, damaged, or lose their effectiveness.
- Always use discs with the correct diameter (Ø125mm) and bore size for this grinder.
- Follow the instructions in Section 5.3 for safe disc replacement.
8. Solució De Problemes
This section addresses common issues you might encounter with your WORKPRO Angle Grinder.
| Problema | Causa possible | Solució |
|---|---|---|
| El molinet no arrenca. | Bateria no carregada o no inserida correctament. Safety switch not engaged properly. | Assegureu-vos que la bateria estigui completament carregada i ben inserida. Follow the two-step switch operation (push right, then push up). |
| El molinet s'atura durant el funcionament. | Excessive pressure applied, activating overload protection. La bateria és baixa. | Reduce pressure on the workpiece. Turn off the switch, then restart. Recarregueu la bateria. |
| Vibracions o sorolls excessius. | Disc is worn, damaged, or improperly installed. Guard is loose or tilted. | Inspect and replace the disc if necessary. Ensure the disc is correctly mounted and tightened. Re-secure the protective guard, ensuring it is not tilted. |
| Mal rendiment de tall/esmolat. | Disc desgastat o incorrecte. Insufficient speed due to low battery. | Replace with a new, appropriate disc. Recarregueu la bateria. |
9. Especificacions
Detailed technical specifications for the WORKPRO 20V Cordless Angle Grinder.
| Característica | Especificació |
|---|---|
| Marca | WORKPRO |
| Número de model | W125049AU |
| Font d'alimentació | Funciona amb bateria |
| Tipus de bateria | 20 V 4.0 Ah d'ió de liti |
| Velocitat sense càrrega | 7500 rpm |
| Diàmetre del disc | Ø125mm |
| Pes (sense bateria) | 1.75 kg |
| Total Weight (with battery) | 3.58 kg (pes del paquet) |
| Material | Acer d'aliatge |
| Color | Grey, Black, Green |
| Fabricant | Hang Zhou Great Star Industrial Co.,LTD |
| UPC | 820909764137 |

Image 9.1: The angle grinder placed on a scale, illustrating its lightweight design at only 1.75 kg without the battery, which helps reduce user fatigue during prolonged work.
10. Garantia i Suport
The WORKPRO 20V Cordless Angle Grinder comes with a Garantia del fabricant de 1 anys des de la data de compra.
This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, abuse, neglect, unauthorized repairs, or normal wear and tear.
For warranty claims, technical support, or inquiries about spare parts, please contact WORKPRO customer service through your original point of purchase or visit the official WORKPRO weblloc.
Si us plau, conserveu el comprovant de compra per validar la garantia.





