I always go for 125mm, I have found a few places that sell both size discs for the same money, So i’m getting a bit free, I spring and rewelded the guards on both my Makita’s to take the 125mm. A good big’n is always better than a good litt’l’n.
Here’s our guide to selecting the right grinder for your job. Used for metalworking and finishing work, the disc of a straight grinder is mounted in the opposite way to that of an angle grinder. Whether you are grinding, cutting, deburring or sanding, no material is able to stand up to a grinder.
Below is a specification comparison between a Metabo 4 1/2″ Angle Grinder and Metabo 5″ Angle Grinder. “In a comparison test, we used a Metabo 4 1/2″ Angle Grinder against a Metabo 5″ Angle Grinder with the same bond Speedgrit 1.6mm cutting discs. Measurement Metric 4 1/2″ Angle Grinder 5” Angle Grinder In house cutting test results cutting 150mm x 8mm mild steel flat and 1.6mm discs 3 cuts 6 cuts 100% greater consumable life Average time per cut 67secs 55 secs 21.8% faster cutting speed.
Below we have listed some top uses for angle grinders as well as the discs you should use for each application. Angle grinders spin at magnificent speeds, so with the correct cutting disc fitted, you can use them to cut through pipes, metal, tile, stone and more. Angle grinders can also be used for polishing metal thanks to their high RPM. The main tool for doing so is a flap disc or wire wheel.
Which angle grinder suits you best, depends on a number of things.
Cutting or grinding something that seems not accessible to the grinder means you need to use a different tool. Another genius friend thought a grinder is a great tool to sand the wooden floor of his front porch. “My son in law, was helping his friend replace an old fence with a colorbond fence. Having seen me doing this a few times, he felt full of confidence. Borrowed my 9” grinder to cut the old fence post off … For some unknown reason he thought that cutting from right to left was the way to go so proceeded to reposition the left hand handle on the top and was cutting with right hand on the dead man switch and left hand on the vertical handle cutting from right to left the post at ground level.
115mm or 125mm angle grinder Related Question:
What is the difference between 115 and 125 grinder?
All in all, 125mm angle grinders are extremely versatile tools despite their limited cutting depth of just 38 mm. While 115mm angle grinders offer a maximum cutting depth of only 30 mm, they are precise, easy to handle and lighter than larger versions.
What is the most popular size angle grinder?
The most commonly used sizes are the 4” and 4 ½”. These grinders typically have the capacity for wheel diameters of up to 7”, with particularly small versions having the capacity for 3” discs.
What size angle grinder blade do I need?
The size of the disc should have a direct bearing on your choice of angle grinder. The two most common disc sizes are 4.5” (115mm) and 9” (230mm). Grinders with larger discs are particularly well suited to heavy-duty applications, whereas those with smaller discs are ideal for finer work.
How thick should a metal cutting disc be?
Cutting discs are best for cutting through metal and are available in different thicknesses as explained below. For standard, everyday jobs on stainless or mild steel, opt for a 1mm or 1.6mm disc thickness. For cutting thin sheet metals, choose a 1mm or 0.8mm disc.
What is Arbor size on angle grinder?
“The “standard” spindle (sometimes called the “arbor”) thread these days on a angle grinder in the US is 5/8-11 (5/8″ diameter and 11 threads per inch).
What size angle grinder Do I need to cut paving slabs?
A 230mm or 300mm blade is best for cutting paving materials; the smaller diameter blades used on Angle Grinders are not really suitable. If you have a lot of cutting work to do, leave it until the end of the project, hire a saw for just one day, and do all the cutting in one session.
Can I use bigger disc on angle grinder?
Fitting a 14 inch (356 mm) cut-off disc to a 9 inch (230 mm) angle grinder will increase the edge speed excessively to at least 120 m/s (430 kmph). The photograph below shows an angle grinder with the wrong size cutting disc fitted and the guard removed.
How deep can you cut with a 4.5 inch angle grinder?
A 4.5 angle grinder has a blade that is 4.5-inches in diameter. This means the blade extends 2.25-inches for the center in each direction. As a result, it is not physically able to cut through 4 inch concrete. Select a larger grinder when a deep cuts are necessary, such as a 9-inch grinder.
Can grinder cut concrete?
Concrete cutting is a common task at the construction area, such as cutting concrete floor, concrete wall, concrete slabs and concrete pavers. Although the various concrete cutting saw is available, an angle grinder is the most convenient tool for small concrete cutting work.
What is a 7 inch angle grinder used for?
Angle grinders are versatile tools that can grind metal and cut tile, stucco and pavers, rout out mortar, plus they can sand, polish and sharpen. Learn to use an angle grinder to cut tile, mortar and pavers; make quick work of rust and loose paint removal; sharpen blades and cut or grind steel.
How many angle grinders do you need?
The best option is to consider which attachments you use the most. Let’s say you tend to use a hard wheel and a wire wheel most often. Then having 2 grinders will allow you to switch between the two effortlessly. Obviously, most welders start out with 1 grinder.
How deep will a 9 angle grinder cut?
For example a 4″ grinder can go as deep as an inch and a 9″ grinder can go as deep as 3″ depending on the angle/ position. This grinder is very powerful, a bit heavy but that’s to be expected for a unit this size.
What sizes do grinders come in?
Common discs sizes include 4-1/2 inch, 5 inch, 6 inch, 7 inch, and 9 inch. A small angle grinder (disc size under 7 inches), is ideal for many common applications. For larger surfaces and bigger depth of cuts, a larger disc size is more effective.
What is a 100 angle grinder?
4′ (100mm) angle grinders, as the name suggests, accept grinding discs up to 100mm in size. These grinders are relatively small in size, and are suitable for smaller jobs. The size of disc that the grinder can accept dictates the depth of cut that the grinder can achieve.
What is the diameter of a grinding disc?
Grinding Disc Diameters of 180 – 230 mm.
