We don’t always dwell on the differences between grinder discs. They are interchangeable and vary in depth. They are divided into sizes intended for different applications.
Do-it-yourselfers use discs with a diameter of 115 or 125 mm. Professionals instead opt for discs with a diameter of 230 mm.
Most of the time in the hobby field – but sometimes also on the worksite – they often don’t have clear ideas about how much the discs really affect the finished work.
It’s to know them better.
It is not a detail matter: indeed, for everything to be done in the best way, you need the right disc. It is for this reason that you should know which grinder discs are available on the market and to learn something about them better.
First because it isn’t always required or necessary to cut and go deep.
Flap discs are perfect to stay more on the surface, thanks to its characteristics other than abrasive ones that smooth deeply.
The thickness of the flap discs has been gradually reduced, in order to optimize the efficiency and speed of the cut. Now they don’t have big differences and each disk guarantees more or less similar performances.
However, there are specific cold cut flap discs, ideal for heavy duties, especially on alloy and stainless steels.
Instead, a diamond blade should be chosen considering operating times and costs.
A lowest cost doesn’t always mean convenience. If the diamond dust is not of the highest quality, completing a cut will be more tiring and it will take longer than expected.
So, an economic saving could mean a greater expenditure of time, a faster consumption of the blade and a rapid thinning of the disc.
Lastly, the inevitable deformation due to the camber, responsible for a slow and difficult cut.
Diamond proof.
A good diamond blade can go anywhere.
The perforated steel discs are perfect for working on granite or reinforced concrete: the drilling allows rapid cooling for a faster processing in particularly disadvantageous circumstances.
Alternatively, the turbo rimmed blade discs are equally suitable for this purpose, also excellent on porcelain stoneware and marble.
There are 230 mm steel grinder discs with a segmented surface. A 10mm segment height is sufficient to ensure excellent cuts on stone or granite surfaces.
In addition to diamond blades with shaped cutting edge, manufacturing houses are now turning to universal blades. Able to cut wood, metals and stone indifferently.
Multi-purpose universal grinder discs ensure high performances thanks to laser-welded segments.
When it comes to stainless steel, the best manufacturing houses are cautious. On the market you can request and purchase additive free discs with no iron, sulphur or chlorine.
The finish that’s right for you.
Designed to excel in the quick removal and finishing of steel and aluminum surfaces, the flap zirconium discs are excellent for edges and weld seams.
Milwaukee natural fibre discs with flexible backing pad are able to limit vibrations and annoying noises, without altering in any way the roughing speed on metals.
Also available the turbo flap disc to ensure high speed and longer life (up to 50%)
Thanks to these features the grinder discs is usable to the end without apprehension, for your safety and for the integrity of the metal during normal roughing operations.
All flap cutting discs have an expiry date, the disk resins used in the abrasive compound lose their initial cohesive power, with the risk of breaking during cutting.
In addition, due to the very high rotation speeds, the grinder discs tend to overheat quickly. That is why any negligence can compromise our and your safety.
Wear safety glasses or gloves, always make sure that the locking system works. This device with other security measures, makes the difference, what if there was a sudden blackout? You certainly want to return to your workstation the next day.
To finish a job or to start a new one. We’ll catch up to the next!
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