4.5 VS 7-inch Angle Grinders – What Is The Difference?

Angle grinders are multipurpose equipment that can grind metal, cut tile, stucco, and pavers, rout out mortar, sand, polish, and sharpen, and they can also sand, polish, and sharpen.

However, many people are unsure which angle grinder would be ideal for them. “Which angle grinder will work best?” is a common query.

We are aware of this.

Every day, there are more news reports about angle grinder accidents or work that isn’t done on schedule due to faulty machinery.

That’s why we’ve outlined all you need to know about angle grinders so you can make the best decision possible.

Whether you want to grind metal or cut tile,

this guide will help you make an informed decision because it offers the most significant information available,

  • best angle grinders
  • pros and cons of 4.5-inch angle grinder
  • pros and cons of 7-inch angle grinder
  • Comparison of 4.5 and 7-inch angle grinders.

For our 4.5 and 7-inch angle grinders comparisons, we looked at both versions’ task, size and speed and checked which one is the best overall.

Here’s everything you need to know about the 4.5 and 7-inch angle grinders.

4.5 vs 7 inch Angle Grinder

We make the following point which clearify both differnece about 4.5 vs 7 inch angle grinder. so, check and get clear info.

4.5 vs. 7 inch Angle grinders: tasks used

Angle grinders, particularly 4.5-inch angle grinders, have become one of the most potent and adaptable tools in the hands of builders, plumbers, tradesmen, and anyone who wants to perform some metal fabrication work at home.


Angle grinders with a 4.5-inch diameter can be used for various tasks, including cutting tiles, ceramics, stones, concrete, carving wood, removing paint or rust, grinding, and so on. 

Angle grinders with a 4.5-inch diameter are ideal for a variety of tasks.

You must adjust the RPM correctly and apply light pressure through the outline if you want excellent slicing and flawless finishing.

On the other hand, Metalworkers can boost production using 7-inch angle grinders in various demanding applications.

It is both compress and portable, yet highly durable, the FA-67 series mixes strength or power with a user-simple design to make time-consuming grinding tasks easier to perform.

The FA-67 likewise makes authority with a user-friendly configuration to make time-consuming grinding tasks easier to complete

4.5 vs. 7 inch Angle grinders: why size matter

The angle grinder’s size is essential. Because it depends on what you intend; the to use it for, size matters.

The most common angle grinder size is 4.5 inches, which means it uses discs with a diameter of 4.5 inches.

The smaller the size, such as a 4.5-inch grinder, is ideal for various tasks such as grinding welds, removing rust from metals, and removing paint or burrs. 

For most workshop tasks, this is a good size. Deeper cuts will be made with larger wheels or discs.

A 4.5-inch wheel will not cut through a concrete slab that is 3 inches thick because the 4.5-inch wheel only sticks out at half the diameter –2.25 inches. 

In simple words, a small angle grinder can usually hold a disc that is seven inches in diameter or smaller.

For this job, you’ll need a giant grinder, such as the 7-inch one.

They’re found on various angle grinders and can be utilized for various cutting and grinding tasks.

Whereas the more significant the size, the greater the power, and thus the smoother the cuts and the better the work.

A 7-inch grinder will quickly cut through small bits of wood, but utilizing it on a hardwood beam will be more difficult. 

Angle grinders with 7″ discs are classified as medium, while discs between 7″ and 9″ are significant.

Large angle grinders are designed specifically for making large cuts and scanning large areas in one pass.

They also have a significant amount of horsepower. Angle grinders in the medium-to-large size range are frequently corded.

4.5 vs. 7 inch Angle grinders: speed

The 4-inch angle grinder has a load speed of 11,000 RPM and is powered by a powerful motor,

whereas the 7-inch angle grinder has a powerful 15 amp engine that produces up to 6,600 RPM for quick stock removal.

4.5 vs. 7 inch Angle grinders: verdict

We’re getting close to deciding which one is the greatest. According to the data presented in the essay, everything depends on the type of activity you do or desire.

The small or 4.5-inch angle grinder is used for various cutting and grinding tasks,

but the medium-sized or 7-inch angle grinder makes significant cuts and searches large surfaces in one pass.

They also have a significant amount of horsepower.

Leave a Comment