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.
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.
Which angle grinder suits you best, depends on a number of things.
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.
In its most basic incarnation, an angle grinder is a fairly simple machine: it essentially consists of a motor connected to a gear mechanism which drives a spindle set at a right angle from the body. As well as these considerations, there are a number of different sizes to be aware of when selecting the best angle grinder for your requirements. The best angle grinder for cutting through thick paving slabs will not be the best angle grinder for wire brushing metal fence railings and vice versa.
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.
angle grinder 125 vs 115 Related Question:
What size angle grinder is the best?
It all boils down to what you’re trying to accomplish.” As for size, most DIYers are best off with an angle grinder that uses 4.5-inch or 5-inch discs, although if you handle very large or tough projects, you’ll appreciate the extra size of a 7-inch angle grinder.
Is a bigger angle grinder better?
Disc diameter – angle grinders with larger diameters take bigger discs that make deeper cuts. Wattage – higher wattage gives more power to cut through denser materials. Speed – multiple speeds give more control for precise work.
How powerful should an angle grinder be?
for grinding: 1,000 watts. for cutting through simple materials: 1,500 watts. for cutting through strong metals: 2,500 watts.
How deep can a 230mm angle grinder cut?
A 230mm angle grinder has a maximum cutting depth of approximately 65-70mm in one go.
How deep does a 125mm angle grinder cut?
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.
How do I choose an angle grinder disc?
depends on the type, shape and thickness of the steel that needs to be cut. For standard everyday jobs on either stainless or mild steel using an angle grinder, choose a 1mm or 1.6mm thickness in your disc. For projects that involve thin metal such as sheet metal, choose a 1.0mm or 0.8mm thinner cutting disc.
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.
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).
Will an angle 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.
Are 9 inch grinders banned?
Caution: 9 inch (230 mm) angle grinders have been banned on some work sites due to the increased risk of injury. The increased power and size of the unit will cause more severe kickback and gyroscopic effects (i.e. makes the grinder difficult to manoeuvre).
Can an angle grinder cut paving slabs?
Cutting Pavers With a Circular Saw or Angle Grinder Both a standard circular saw (7 1/2-inch blade) or angle grinder (4 1/2-inch blade) make clean, easy cuts and involve similar techniques. In either case, be sure to use a diamond blade made for masonry and stone.
Can you use water with angle grinder?
Anytime you’re cutting masonry with an angle grinder it’s a good idea lubricate the cut with water. It will cool the blade and keep the dust down.
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.
How deep can a 4.5 angle grinder cut?
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.
What is the difference between a disk grinder and an angle grinder?
The most significant difference between the two is the fact that Disc grinder is a solid piece of machinery, whereas an angle grinder is a handheld and portable in nature. Also, an angle grinder is used for rough cutting and grinding, whereas a disc grinder is usually used for precision work on smaller workpieces.
