Try to avoid buying a grinder without doing the proper research. Instead, check out the different grinder features both in the store and at online websites like eBay that have grinders for sale. Choosing the right grinder size depends on several factors, but it is arguably the most noteworthy feature of the grinder. This guide provides five tips for choosing the correct size grinder for any job.
Tip 1: The Bigger the Grinder, the Better it is for Large Jobs
It is surprising how many handymen do not understand that a grinder’s size is determined by its discs, not the length of the overall machine. While it is true that grinders with bigger wheel discs are longer than their smaller counterparts, this is because a bigger handle is needed to control the wheel. For example, a 4.5- inch angle grinder is the most common size, and brands like Kawasaki and Ryobi are popular with homeowners. It uses wheel discs that are 4.5-inches in diameter. A 7- inch grinder uses a 7- inch disc, and so on. Understand that the bigger sizes use larger wheels. Wheel size is particularly relevant for large jobs. If a homeowner only occasionally uses a grinder for odd cutting jobs around the house, then purchasing a smaller size works well. A 5- inch grinder can cut through several feet of wood in no time at all. However, using that same grinder on a large project like cutting beams for a deck would quickly become a chore. Professionals often choose larger grinders because they can work quickly on monster jobs.
Tip 2: Bigger Wheels Make Deeper Cuts
Grinder sizes are especially pertinent once materials are taken into consideration. For example, grinders of any size can cut through wood, though smaller grinders will get into trouble with especially thick pieces. However, not all grinders can handle durable materials like stone and concrete. Not only are they incredibly strong, they also tend to be thick. For example, a concrete slab can easily be three inches wide. A 4.5 angle grinder has a blade that is 4.5-inches in diameter, which means the blade extends 2.25-inches from the center in each direction. Therefore, it is not physically able to cut through 4 inch concrete. Choose a larger grinder when deep cuts are needed, such as a 9- inch grinder, the blade of which extends 4.5 inches from the center.
Tip 3: Smaller Grinders Spin at Faster Speeds
A smaller circle with a tiny circumference will spin at faster speeds than a large circle with a greater circumference: the basic principles of physics. In fact, it’s not unusual to see 4.5-inch grinders top out at speeds over 11,000 RPM. This is what gives these tiny grinders the power to cut and polish metal. However, it is also the reason why smaller grinders are more susceptible to overheating than their larger counterparts. If a 7-inch grinder is spinning at speeds of 5,000 RPM while it is sanding a floor, its greater design and slower speed is generating less heat than a 4.5-inch grinder spinning away at 10,000 RPM. Yes, the greater speed gives the grinder more power, but it also makes it easier to fail. In fact, most experts recommend buying a smaller grinder that comes with adjustable speed settings so the user is not constantly operating on the highest setting. After all, if the job is forcing the worker to use the highest speed possible, it’s better to set the smaller grinder aside and pick up a larger one.
There is one caveat to this general tip. Grinder speed is also determined by the amp rating of the motors. While it is often the case that a 4.5-inch grinder is going to be faster than a 6- inch grinder, the buyer needs to also pay attention to the motor. A 6-inch grinder using a motor that produces 13 amps is going to be just as fast, if not faster, than the 4.5-inch grinder with a 7 amp motor. Always look at the RPM rating and never assume that just because a grinder is smaller it is automatically faster.
Tip 4: Not All Grinders are for Novices
Grinders are discount Power Tools online that use heavy-duty metallic discs spinning at impressive speeds. Also, most of these discs use sharp edges or grinding grains, and it is easy to see why they can be potentially dangerous. Smaller grinders are easier to control due to their smaller wheel size and users often operate them with just one hand. Even so, these small grinders hold a lot of power, so it best to always wear safety equipment like a face plate in case the grinder shoots out debris. Gloves are also recommended because the rapidly spinning disc creates a lot of vibration along the handle of the angle grinder. It’s best to start out with the smaller grinders and get a feel for how to use them before advancing to the larger ones.
Professional grinders come in serious sizes like the 7-inch grinder. Users need to operate this grinder with both hands. In fact, it is so strong that it is almost impossible to control in just one hand. Safety equipment at this stage is essential, though it may do the user no good if the grinder kicks back. Since grinders operate at such high speeds, they often lead to serious accidents. For example, the 9-inch grinder that is still made by brands like Makita was once popular in industrial workplaces, but its gigantic size caused many accidents. Today, many industrial complexes outlaw using 9-inch grinders. The big grinders are no place for a novice to begin learning grinder operations.
Tip 5: Smaller Grinders are Cordless
Cords, while they may be irritating, may be a necessary part of power tools. Nothing is more annoying than crawling into a tight workspace to grind pipes only to realize the cord simply doesn’t reach. Not only are large grinders big and bulky, they often come with heavy duty motors that use 240 volts or 110 volts. This means they need a cord that gives them a constant supply of power. Smaller grinders commonly use a more reasonable 18 volts of power, which allows them to work on a rechargeable battery. Many are cordless . Keep this in mind when selecting a grinder.
Get more information about cheap electric angle grinders for sale at www.eastmachinery.com.
Electric Angle Grinders
Electric Angle Grinders
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