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PROSHI
1.37 pounds
6.22 x 3.07 x 1.29 inches
Polished color
9.8
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Buyer's Reviews 83

It looks good, and it works well, but I'm not sure whether it's this tool or my compressor, which is not 100% accurate, because they should work together, but I can only use this thing for about a minute at a time to let the compressor catch up.

Chicago Pneumatic
1.25 pounds
9.29 x 4.41 x 3.82 inches
No
9.3
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Buyer's Reviews 70

First of all, I will note that this tool is sufficiently motivated, so my review is based on the use of this grinder in its maximum potential. It is driven by 115CFM Sullair compressors and delivers air to the entire facility-the human tool eats it up! Main features: very durable shell-as a welder, I often use it because some welding is difficult to meet the required specifications. Therefore, grinding and rewelding are common. As a result, it was discarded, abused, and exposed to very harsh conditions seen in a manufacturing plant. But there was no sign of cracks or major damage. It's been bitten a lot-as I've said, grinding welds is common, but it needs to be done in time. For other air grinders, torque does not exist or is not sufficient to effectively grind welds. With 872, the situation is different. I have used all my power to grind the welds, and the speed has only been reduced to about 2 of the maximum rotation. Other grinders, such as port freight brands, have almost stopped! Heavy-it is quite heavy and certainly helps to control and reduce vibration. There is nothing to say about this. Easy to use chuck key! The change of position is very simple. Will not get stuck or pass through the thread. There's no need to unscrew it like a wrench nut. This is very convenient. A trigger that will never get stuck! It's always smooth when you pull it. Anyway, CP872 is your best choice. Just make sure you hold on to it, or it will fly out of you.

SHININGEYES
2.26 pounds
9.09 x 8.07 x 1.97 inches
No
9.1
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Buyer's Reviews 30

So the fare has been so good for about two months. I'll just say wear some earplugs very loudly.

Valianto
1.71 pounds
15.04 x 8.23 x 1.89 inches
No
8.8
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Buyer's Reviews 26

The tool oiler is leaking. The containing bottle does not cover the tip of the cap after you cut it out and use it. This is a bit unavailable if you do not want to unscrew the tanker from the hose. No experience with this style of grinder, so uncomfortable with it (again?) 。 Used to split rusty nuts and to clean up rough areas on 3D printing assemblies.

ZHONG AN AIR TOOLS
1.21 pounds
9.53 x 7.64 x 1.61 inches
No
8.6
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Buyer's Reviews 14

It's just part of the price of other similar products. It is well made and runs very smoothly. Moreover, it is very convenient to use, and it is also very convenient to carry it with you. It's a strong little guy. I love it.

Chicago Pneumatic
12 ounces
7.01 x 3.9 x 2.2 inches
No
8.1
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Buyer's Reviews 15

Very good. It's small, but it's got fists in it. I prepared for welding with a grinder on thin steel. It works very well with roloc abrasives.

J&R Quality Tools
1.26 pounds
7 x 4 x 2 inches
No
7.7
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Buyer's Reviews 14

The effect is good in terms of cost

Xinhuang jixie.,Ltd
1.1 pounds
9.02 x 5.98 x 2.99 inches
No
7.7
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Buyer's Reviews 15

I wanted to do my own two-stroke cylinder transplant, and I found this. This is of very high quality, built in Germany, and comes with an adapter, 1 thread air chuck connection. Cylinder I ports 52 and 54 mm, I need short cutting positions to work freely in the cylinder. The exhaust sleeve worked well, but I glued it in the right place with some faucets, otherwise there would be no way to keep it in place. This is the only flaw so far. This is a high quality tool.

WMH Tool Group
1 pounds
7.74 x 3.78 x 2.05 inches
1/4"
7.4
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Buyer's Reviews 15

This tool saved my life while studying in a 30-day stone carving art neighborhood in Italy. Amazon shipped to the Italian village, my marble sculpture is very popular!

AirCat
1.39 pounds
7.8 x 2 x 1.57 inches
No
7.2
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Buyer's Reviews 24

I have recently discovered AirCat air tools. I own many air tools and they are all Ingersoll Rand. Don't get me wrong, IR tools have been very good to me, but if you need a really small 1/4" air ratchet or Mini-Grinder, these AirCat tools are great. I bought both a mini grinder and 1/4" ratchet. They work really great, have plenty of power, hold the sockets tight and run very fast making hardly any sound at all. Money well spent, I am Very Satisfied!

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Customer Reviews
(83)
(70)
(30)
(26)
(14)
(15)
(14)
(15)
(15)
(24)
Manufacturer PROSHI Chicago Pneumatic SHININGEYES Valianto ZHONG AN AIR TOOLS Chicago Pneumatic J&R Quality Tools Xinhuang jixie.,Ltd WMH Tool Group AirCat
Item Weight 1.37 pounds 1.25 pounds 2.26 pounds 1.71 pounds 1.21 pounds 12 ounces 1.26 pounds 1.1 pounds 1 pounds 1.39 pounds
Product Dimensions 6.22 x 3.07 x 1.29 inches 9.29 x 4.41 x 3.82 inches - - - 7.01 x 3.9 x 2.2 inches 7 x 4 x 2 inches - 7.74 x 3.78 x 2.05 inches 7.8 x 2 x 1.57 inches
Material Aluminum - Copper Metal Copper - Aluminum Stainless Steel - Composite
Power Source Air-powered Air-powered Air-powered Air-powered Air-powered Air-powered Air-powered Air-powered Air-Powered Air-powered
Date First Available March 10, 2019 April 1, 2004 July 28, 2017 November 4, 2015 May 15, 2018 April 1, 2004 July 24, 2018 March 15, 2017 June 30, 2015 April 19, 2011
Is Discontinued By Manufacturer - -
Support Prime
Price $27.37 $45.78 $27.99 $32.99 $34.99 $55.77 $29.95 $68.00 $61.79 $59.95
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Best Air Powered Grinders Buying Guide

John Preston
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The use of air-powered grinders is more frequent. The air version is more robust and durable than the electric machine since its intensive use and heavy tasks do not cause overheating in the electric motor (since they lack it).

However, they require compressed air compressors and pneumatic hoses that make their use more uncomfortable. In addition, when the compressor is not well sized for the task, we are forced to stop the work and wait for the compressor to recover to continue the operation.

Therefore, the purchase of an air-powered straight grinder is interesting for the home user or in small workshops. In addition to the above, another important advantage of the straight grinder over pneumatic is that it is quieter and, in many cases, lighter and more manageable.

Also, since it does not need a compressor, it is easier to transport, which is ideal for on-site assembly, installers, etc.

When buying accessories for a straight grinder, some considerations must be taken into account:

Speed ​​supported: not all accessories are compatible with any machine. And vice versa. There are accessories that only support a limited angular speed (number of rpm). In such cases, the manufacturer will indicate in the accessory which is the maximum allowed for the tool.

Similarly, not all machines can equip any accessory diameter. The larger the diameter of the accessory, the more power the machine should have. The maximum permissible diameter of the accessories shall be indicated in the manual and in the datasheet. If this measure is not respected, it can either break the accessory or overheat the electric motor of the straight grinder.

Type of material: the material of the accessory influences the performance of the work. For example, burr removal can be done with both grinding wheels and cutting mills. The latter has the advantage that they do not heat or wear as much as abrasives.

Cutting edges: carbide burs are manufactured in two styles: single or double-edged. To rough and eliminate burrs in steel and cast iron, both can be used. On the other hand, for works in aluminum, the single-cut is recommended since they have to get less embossed.

Carbide burrs: The small rotary cutters of tungsten carbide, also called tungsten carbide, are used to remove burrs in metals. They can also be used in other materials.

Tungsten carbide, due to its high hardness, is able to scratch and penetrate metals such as steel, copper, aluminum, brass or cast iron. It can also carve grooves, smooth edges, and contours or burn channels in some stone materials such as (marble and granite), wood, plastics, etc.

To be able to attach them on the straight grinder, it is necessary to have a 1/4 inch collar. Instead, a 6 mm shank can be used directly. They are much more robust and durable but also more expensive.

In addition to the removal of burrs, they are used for other fine finishing works: to carve wood, touch up welds, chamfer, grind, make jewelry, engineering works, etc.

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