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How to Choose the Best Angle Grinder for the Job

Struggling to understand which angle grinder you require for the task in hand? SGS Engineering have put together this guide to help you choose which angle grinder to buy.

You’ve heard how versatile and useful an angle grinder can be around the home, and now you’ve got to decide which angle grinder you should buy. There’s loads of information out there and literally thousands of power tools to choose from - sometimes it’s difficult to know where to start! Every substantial toolbox should contain at least one, but the question is which angle grinder do I need? Look no further; this comprehensive buyer’s guide has been put together with the sole purpose to give you all the information you’ll need to make an informed decision about your purchase.

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Why Buy An Angle Grinder?

You’ll see angle grinders on construction sites, in auto garages, metal working shops, or anywhere someone might want cut, remove or smooth excess material. Whether you’re a tradesman or a keen home DIY-ist, an angle grinder is the go-to tool for someone serious about grinding, cutting or polishing. An electric grinder is one of the most versatile power tools in any arsenal and works via the use of a rapidly rotating gear head and interchangeable abrasive wheels. Depending of the head you have mounted, you can cut, polish, sand and grind a huge array of materials.

Common projects that you might want to use a grinder for include cutting metal rods, bolts and sheet materials, trimming stone and ceramic tiles, or removing paint and rust from metals. This is just the beginning of the tasks an angle grinder can tackle: from, sharpening a blunt tool to polishing your car - with the right abrasive head, the possibilities are basically endless. There are thousands of disc and wheel accessories on the market, but the common ones include abrasive grinding discs, cut-off discs, grinding stones, polishing pads, sanding discs, and wire brush wheels.

Common projects that you might want to use a grinder for include cutting metal rods, bolts and sheet materials, trimming stone and ceramic tiles, or removing paint and rust from metals. This is just the beginning of the tasks an angle grinder can tackle: from, sharpening a blunt tool to polishing your car - with the right abrasive head, the possibilities are basically endless. There are thousands of disc and wheel accessories on the market, but the common ones include abrasive grinding discs, cut-off discs, grinding stones, polishing pads, sanding discs, and wire brush wheels.

Do you want to know a little more about what you can do with an angle grinder? We’ve put together a collection of handy How-To guides, detailing step-by-step instructions for some important DIY task. Take a look here.

What to Look Out for and Useful Terms

As with many power tools, there’s a plenty of jargon and unfamiliar terms associated with angle grinders. Although the specifications of all the various grinders vary hugely, there’s a couple of useful terms and features that will help you sift through the options and pick exactly the right solution for you. So here are the things to look out for when you’re shopping:

 angle-grinder-disk-wheel-head

Disc/ head/ wheel

These three terms are used interchangeably, when referring to angle grinders. Grinder’s come in lots of different disc sizes, but the most common sizes are 115mm (4 ½”) and 230mm (9”). You can purchase different discs/heads/wheels depending on the task you want to complete - just make sure they're the right size for your grinder!

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Wattage

The higher the wattage of the power tool the more power it’ll have available to use. Grinders with larger discs/wheels will need a higher wattage. Expressed as Watts or W.

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No-load-speed

This is the speed that the disc rotates before you start making a cut. The higher the no-load speed the better quality the cutting action is going to be. Where-as a drill will have a no-load speed of around 700-1,200rpm - a good angle grinder can achieve up to 12,000rpm!

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Spindle lock

A spindle locking mechanism makes for super quick accessory removal and replacement.

 angle-grinder-handle

Auxiliary handle

Sometimes simply called a side handle, this useful feature can normally be mounted on the left or right of the tool for left and right handed operators. Some grinders such as the Ryobi ONE+ 18V Cordless 115mm Angle Grinder, have a 3 position handle for more manoeuvrability.

Choosing the Right Tool

So, regardless of whether you’ll be cutting, grinding, sharpening, sanding, cleaning or polishing, we’re sure we’ll have something in the SGS range of angle grinders for you. Find out more about our grinders bellow.

Disc Size and Power

The bigger the grinder wheel, the more power the grinder will need, so if you’re looking for a grinder with a 230mm head, keep an eye out for a higher wattage tool. A larger tool means you’ll be able to quickly cover a larger surface area, so if you’re going to be mainly cutting out mortar, or working with sheet materials and slabs, you might want to take a look at the Hyundai 2100W Corded 230mm Angle Grinder. with a no load speed of 12,000 rpm, the Hyundai utilises all 2100 watts of power to give you a high performing tool. A smaller 115mm angle grinder mean 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. These smaller tools tend to be more lightweight and a little easier to wield, regardless of your level of experience.

The bigger the grinder wheel, the more power the grinder will need, so if you’re looking for a grinder with a 230mm head, keep an eye out for a higher wattage tool. A larger tool means you’ll be able to quickly cover a larger surface area, so if you’re going to be mainly cutting out mortar, or working with sheet materials and slabs, you might want to take a look at the Hyundai 2100W Corded 230mm Angle Grinder. with a no load speed of 12,000 rpm, the Hyundai utilises all 2100 watts of power to give you a high performing tool.

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. These smaller tools tend to be more lightweight and a little easier to wield, regardless of your level of experience.

 EAG600RS--Hero_1  

The Ryobi 600W 115mm Angle Grinder is a fantastically priced, lightweight power tool, ideal for someone looking for maximum versatility and usability. With a lock-on switch, 2 position auxiliary handle, adjustable guard and quick accessory changes, the Ryobi 600W is fully equipped. View Now

 hyundai hy2156 angle grinder (6)  

If you’re looking for a plucky, lightweight grinder, at an unbeatable price - look no further than the Hyundai 600W Corded 115mm Angle Grinder. With a lower no-load speed than the Ryobi, the Hyundai doesn’t perform quite as impressively, but for those quick little maintenance jobs around the house and the occasional project, the Hyundai is well worth considering. View Now

Cordless and Comfortable

Sometimes you can’t beat the convenience of a completely cordless power tool - and angle grinders are no exception. When you don’t have to worry about long trailing cables you can really focus of the job in hand. The Ryobi ONE+ 18V Cordless 115mm Angle Grinder is one of the best grinders in the domestic market. Part of the world largest collection of interchangeable battery power tools this 18V angle grinder is powered by lithium-ion batteries.

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Ideal for light to medium grinding and cutting tasks, the 18V Cordless Angle Grinder has a simple design to maximise its efficiency. Ryobi products are renowned for their usability and comfort; some of the features you can expect are GripZone overmoulding, 3-position auxiliary handle, tool-less disc change and super quick charging. View Now

The Air Powered Option

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We couldn’t have a complete buying guide without talking about air powered alternatives. The SGS 3" Air Cut Off Saw has a massive no-load speed of up to 20,000rpm and is ideal for precise, high quality finishes. Air tools have less moving components, meaning you can expect a longer life than electric power tools. View Now

Compare the SGS Range of Angle Grinders

Prices correct as of 04/04/2016. Subject to change and availability.

Ryobi 600W 115mm Angle Grinder - EAG600RS Hyundai 600W Corded 115mm Angle Grinder - HY2156 Hyundai 2100W Corded 230mm Angle Grinder - HY2157 Ryobi ONE+ 18V Cordless 115mm Angle Grinder (Body Only) - R18AG-0
EAG600RS--Hero_1 hyundai hy2156 angle grinder (6) angle grinder feature image (4) R18AG-0--Hero_1
Disc Size 115mm 115mm 230mm 115mm
Wattage / Power 600W 600W 2100W 18V lithium-ion
No-load-speed 12,000rpm 10,500rpm 6,200rpm 7,500rpm
Weight 2.3kg 1.8kg 6.1kg 2.8kg
Corded/Cordless Corded Corded Corded Cordless
Spindle Lock Yes Yes Yes Yes
Wheel Guard Yes Yes Yes Yes
Auxhiliary handle  Fixed Fixed Fixed 3-position
Warranty 2 years 1 year 1 year 2 year
Price

£29.60

Incl. VAT £35.52

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£24.98

Incl. VAT £29.98

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£59.98

Incl. VAT £71.98

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£68.25

Incl. VAT £81.90

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