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.
I found these Milwaukee models with the regular trigger switch with lock : 6121-31A is a 5″ 11 amp, 6121-30 is a 4.5″ 11 amp and I believe both were 11000 rpm. I also found a 6124-30 that’s a five inch and 9000 rpm. The first two weighed 5.4 lbs and the last weighed 5.7 lbs.
Two with regular lock-on switches and one with the paddle switch. The paddle switch sees brush duty exclusively, as when the brush catches it shuts off with a simple hand release. This is especially important with lock-on swithes, so the “Off” switch is in a convenient location for use, under the thumb.
If you do a lot of work, get 2 or 3, as swapping discs can be a pain, and also, even if you are only using one sort of disc, giving each grinder a bit of time to cool, by using the other will lengthen their life considerably. 06-07-2014, 09:02 PM #14 I just picked up one of the fein 4.5″ angle grinders from the CPO link, it is a new tool, not refurbished. 06-07-2014, 10:14 PM #16. 06-07-2014, 10:45 PM #17 I just picked up one of the fein 4.5″ angle grinders from the CPO link, it is a new tool, not refurbished.
So a 4.5-inch disc is best for such a grinder while a 7-inch angle grinder works best with a 7-inch disc and so on. The best angle grinder size for thick materials such as concrete and stone are those with 7-inch discs and above. Once you understand these factors listed, you are on your way to choosing the best angle grinder for your needs that match the grinder size required.
5 Re: 5 inch vs 6 inch angle grinder I have a Makita 5″ angle grinder… I have yet to use it. 6 Re: 5 inch vs 6 inch angle grinder I too have mostly used 4.5″ grinders in the past, but the new company I work for uses a lot of 5 and 6 inch metabos, so I didn’t know if there where better options out there…I also have an old 9″ Milwaukee I only break out once in a blue moon, it’s a lifesaver when you need it, but it’s a handful if you have to run it for any length of time. 17 Re: 5 inch vs 6 inch angle grinder i got a 4.5″ and a 5″ plus a nine inch anvil masquerading as a grinder.
5 / 5 inch Angle Grinder The cheapest angle grinder to buy. Entry level 5 inch models are similarly priced to top end 4 inch grinders. Supportable inner disc diameter is 16mm.Supportable inner disc diameter is 22.23mm. Most of the Marble cutter blades, Concrete Cutter blades, Tile Cutting Diamond Discs, Wood cutting blades having 20mm Arbor diameter can be easily used with 4 inch angle grinders.
angle grinder 4.5 vs 5 Related Question:
Which is better 4 inch or 5 inch angle grinder?
The number of cuts achieved with the 5” Angle Grinder were 100% greater than the 4 1/2” Angle Grinder. The 41% output power and 36% torque provided by the 5” Angle grinder, meant that the disc speed remained at its optimum, allowing the disc to work more efficiently.
Which angle grinder size is best?
A smaller 115mm angle grinder means a more versatile power tool. With a smaller cutting disc you get a greater level of precision, so if you’re wanting to be able to trim tiles to shape, sharpen blades, or cut and grind more intricate stone and metalwork projects, we’d suggest a 115mm grinder.
Does angle grinder size matter?
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 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.
How deep does a 115mm angle grinder cut?
While 115mm angle grinders offer a maximum cutting depth of only 30 mm, they are precise, easy to handle and lighter than larger versions.
Can you use a 5 inch blade on a 4 inch grinder?
Due to the disc diameter they are designed for, a 5″ disc won’t fit inside the shroud on a 4″ grinder. You would need to remove the shroud, which is there for SAFETY. Smaller grinders generally run at higher speeds, and grinding discs are rated for a maximum speed.
What size is a normal 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.
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 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.
How powerful an angle grinder do I need?
Speed and performance of angle grinders for polishing: 500 watts. for grinding: 1,000 watts. for cutting through simple materials: 1,500 watts. for cutting through strong metals: 2,500 watts.
What size is the biggest grinder?
Large grinders usually start at 75mm (or ~3 inches) in diameter and can go up to 110mm or larger.
Can an angle grinder cut through 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.
Can I use an angle grinder on concrete?
An angle grinder can be used to level, smooth and polish concrete by grinding it down. They can also be used to remove paint and floor adhesives. To grind concrete with a angle grinder you need a diamond cup wheel, a dust shroud attachment, and a vacuum cleaner.
Do angle grinders cut wood?
An angle grinder is a power tool that can be used for different projects. You can cut metal, aluminium, concrete, bricks, pavers, wood, and other dense materials; you can sand and polish different surfaces to sharpen tools and grind materials.
