Factors to Consider Before Buying a Best Cordless Angle Grinder
In order to use the information we will provide here, you must keep in the back of your mind the uses of a battery powered angle grinder. These compact tools are used in metalwork, construction work, emergency rescue work, welding, fabrication and more. This should let you know whether you should care more about the battery, the performance or the kind of applications for which you need the grinder. Each cordless angle grinder regardless of its brand comes with a guard, a side handle, and a wheel attachment wrench. These attributes are common and therefore we will not use them as factors to consider when making the important decision. However, each grinder exhibits small and subtle details that make them unique in performance and suitability for the different uses of the power tool.
1. The Cordless Angle Grinder Motor
The rating of cordless angle grinding motors is almost the same to all brands but the type of motor itself differ. There are two types of motors – brushless and brushed motors. A few years ago, most manufacturers preferred the brushed motors but the latest trend is the use of brushless motors. The differences in the two types of motors are majorly in the technical engineering details. What you need to know is that brushed motors are cheaper and require higher maintenance. The brushless motors are quite costly but require lower maintenance. In terms of efficiency, the brushless motors are 90 percent efficient while brushed motors are just 80 percent efficient. Take your time and check the type of motor to ensure you choose what you desire.
2. The Battery
The Best cordless angle grinders depend on batteries for their power. A high-quality grinder should possess a battery that has enough power and is capable of maintaining charger to enable you to complete the task before you. Batteries are expensive and those grinders with the best batteries are also very expensive. Two types of batteries exist for power tools – Lithium Ion and NiCad. The Lithium Ion batteries have better capacity and charge quicker than NiCad batteries making them much more expensive. Voltage rating does not have much effect when it comes to Lithium Ion batteries. What you should care about is the Ah rating also known as Amp per hour rating. The Ah ranges from 2Ah up to 5Ah in battery powered angle grinders. The higher the Ah rating the longer you will use the battery before it discharges fully. The high-quality grinder should have a battery whose Ah rating is between 4Ah and 5Ah.
3. The Grinder’s Rotations Per Minute (RPM) or Torque Speed
A grinder with high RPM will allow you to complete your tasks quicker. High RPM motor draws a lot of power from the battery and therefore it discharged it faster. However, the job is completed faster and more efficiently. You need to balance. Whatever you are going to use this powerful tool for should determine the torque-speed to look for. For example, cutting needs high RPM but cleaning a rusty material to prepare it for welding may not require that much RPM but instead longer battery life. A great way to ensure you have a versatile machine that you can use for many different applications is to go for a cordless angle grinder with variable speed setting allowing you to toggle between high and lower torque speeds depending on your project.
4. Other Features and Accessories
These features may have little or no effect on the performance of the grinder but can make its use safe, comfortable, convenient and versatile. These features include grinder handle, wheel and guard and heat dissipation. High-quality grinders feature movable handles, which allow you to reposition it just by unscrewing it and relocating it. This provides optional ways to use the machine for your convenience. When it comes to grinder wheel, be careful about the size of the arbor nut as well as spindle size. This will give you a good idea of the size of discs that will fit your new acquisition. The angle grinder guard is designed to protect you from flying particles at high speeds. Top quality grinders feature quick release mechanisms on the guard to allow you to reposition it without the need of tools. Heat is dangerous to electric components and therefore a good angle grinder should possess and heat dissipation mechanism. Good quality brands design heat synchronizers to dissipate heat better to cool down the machine. During your shopping, pay keen attention to brands that mention improved heat dissipation because this directly correlates with the performance and lifespan of the motor. The Best Cordless Angle Grinder We believe you are now armed with enough information to venture into the market. Remember you should tailor your choice to the very purpose you need the battery powered angle grinder. If you do not want to go through the trouble of researching based on the knowledge you have just acquired then you can just check out the following selected top quality cordless angle grinders to see if you can find one that meets your needs.