Angle grinder, also known as a side grinder or disc grinder, is one power tool that can be used for various tasks. Concrete, brick, pavers, aluminum, metal, and other dense materials can all be cut.
Angle grinders can be used for other purposes with various kinds of discs. Different surfaces can be polished and sanded to grind materials and sharpen tools. Grinders come in a range of sizes. The most widely used grinder is a 10–12 cm model.
Learn about angle grinders
To understand how an angle grinder works, let’s break down its main components:
Motor: The motor is the power source for the tool and is usually electric, although some grinders are pneumatic.
Gearbox: This part obtains power from the motor and modifies it to drive the grinding head to rotate at high speed. BISON modern gearboxes are more robust, allowing our angle grinders to withstand the rigors of heavy-duty duty while being less likely to fail.
Disc / Wheel: This is the part that does the actual work. Depending on the application, the discs can be used for cutting, grinding or polishing.
Adjustable guard: An important safety component that protects the user from sparks and debris.
Side handle: This aids in grip and control. BISON has also made ergonomic improvements to maximize user comfort during operation.
Angle grinder type
Now that you are familiar with the main components of an angle grinder, let’s look at the different types available:
Corded angle grinders: These angle grinders are generally more powerful and suitable for heavy-duty tasks. Corded angle grinders are plugged into the mains power supply to operate. This gives them unlimited run time and constant power. They are also lighter and cheaper to purchase than cordless models. However, the cord means you must be close to a power supply to use it, so maneuverability and portability are hindered.
Cordless angle grinders: Cordless angle grinders offer greater mobility and are powered by rechargeable batteries. This makes them ideal for use with no power supply or when working on ladders or scaffolding. And there's no cord to get in the way while you work. On the downside, their battery capacity limits their runtime and is more expensive and heavier than corded models.
Pneumatic angle grinders: These are powered by compressed air and are generally lighter than electric angle grinders. These are the lightest angle grinders available and are favored by metalworkers because they are safe when moisture is present. They also have a quick start and stop function. They are ideal for locations where power logistics are difficult and are commonly found in car repair shops and other industrial settings.
How do you choose an angle grinder?
Choosing the right tool can be daunting. This guide will give you the knowledge you need to make an informed decision, ensuring you choose an angle grinder that sells well and is safe.
strength and speed
The heart of any angle grinder is its motor, whose capabilities are reflected in its power rating (measured in watts) and speed (revolutions per minute, RPM). The performance of an angle grinder depends largely on its power and speed.
Power
Higher wattage means a stronger motor capable of handling tougher materials and deeper cuts. Amperage (amps) is another specification you may encounter, and angle grinders typically range from 5 to 15 amps; the higher the number, the more powerful the tool.
Speed
Expressed in revolutions per minute (RPM). Higher speeds are good at cutting, while slower speeds allow for more control over grinding and polishing. Always make sure the speed rating of the grinding disc is compatible with the speed of the angle grinder. Choosing an angle grinder with adjustable speed settings is beneficial, especially if you plan to use it for a variety of tasks.
Choose the right power and speed based on your application:
Heavy-duty cutting of thick metal or stone: A high-powered angle grinder is required for working on denser materials. Prioritize high wattage (over 1500 watts) and RPM (over 10,000).
General cutting and grinding of metal or concrete: Medium power (1100-1500 watts) and RPM (7,000-10,000) provide a good balance.
Polishing and finer grinding: Lower wattage (around 750 watts) and RPM (less than 7,000) provide more control for a smooth finish.
Dimensions and weight
The physical size and weight of an angle grinder affects operation, control and comfort during use. For example, a large angle grinder takes a larger disc to make a deeper cut than a smaller one. Working on a ladder with a cordless angle grinder is more accessible than a corded one.
Disc size and type
The size and type of grinding disc determine the range of applications of the angle grinder.
Disc size: Disc diameter is directly related to cutting depth. The larger the disc, the deeper the cut will be, but make sure the disc size is appropriate for your typical needs. Common sizes include:
115mm (4.5in) - Ideal for light cutting, grinding and tight spaces.
125 mm (5 in) - Versatile size for a variety of cutting and grinding tasks.
230mm (9") - Designed for deep cuts and heavy duty grinding on larger surfaces.
Disc types: Different discs are suitable for specific tasks:
Cutting Blades: For cutting metal, concrete or ceramic tiles.
Abrasive Discs: Used to remove material, smooth surfaces, or sharpen tools.
Polishing Disk: Creates a high-gloss finish.
Wire Wheel: Effectively cleans and removes rust or paint.
Brush or no brush?
A brush angle grinder has a motor driven by small metal brushes. Meanwhile, a brushless angle grinder has an engine with an electronic circuit board and sensors. The absence of brushes on a brushless motor means less friction and heat build-up and, therefore, less wear and tear, which gives them a longer life. Brushless motors are also more efficient to run than brushed motors.
security function
There are risks associated with operating an angle grinder, so safety features must be considered:
Disc guard: Protects against sparks and debris that may fly during operation.
Side handles: Provides better control and reduces the possibility of accidents.
Spindle lock: Locks the spindle when changing discs, allowing safe and easy disc changes.
Restart protection: Prevent the angle grinder from restarting during a power outage, causing accidents.
Soft start: Gradually brings the angle grinder up to full speed, thus preventing torque kickback at start-up.
Other factors to consider
Durability: Sturdy construction ensures longevity, while a good warranty gives you peace of mind.
Ergonomics & comfort: Comfortable grip and lightweight design reduce fatigue. Features like vibration control and adjustable handles can significantly improve comfort and control.
Variable speed control: Provides greater versatility to handle a variety of tasks with optimal control. Single speed models are usually lighter and less expensive.
Dust extraction accessories: Minimize dust exposure for a cleaner work environment.
Angle grinder price: Consider your budget and the features required for your project, and seek a balance between quality and investment.
Durability: A well-built grinder with a good warranty ensures long-lasting performance. Your daily work with these tools will be safer and more convenient thanks to BISON angle grinders' long service life, high performance, and safety features that meet the strictest standards.
in conclusion
With the understanding and insights you gain from our guides, we invite you to make informed choices based on your unique needs, ensuring functionality, security, and value are at the forefront of your decision.
BISON is a famous angle grinder manufacturer in China, we are not just a supplier. We offer a variety of angle grinders that are customized to meet specific needs. Not only do we guarantee performance and durability, we also pride ourselves on after-sales support, ensuring total customer satisfaction and fostering long-term relationships.
Ferramentas confiáveis significam trabalho confiável, o que pode tornar sua empresa competitiva no setor. Estamos entusiasmados para que você explore e aprecie os recursos avançados e o desempenho poderoso de nossa linha de rebarbadoras versáteis. Contate-nos hoje!
