The Best Bench Grinder Extension Shafts: I Tested 5 and Found the Top 3

Are you tired of struggling to reach those hard-to-reach spots with your bench grinder? If so, then you need a bench grinder extension shaft!

An extension shaft is a simple but effective tool that can help you extend the reach of your bench grinder so that you can grind and polish even the most awkward parts of your workpieces. In this article, I’ll discuss the different types of extension shafts available, as well as their advantages and disadvantages. I’ll also provide some tips on how to choose the right extension shaft for your needs.

So if you’re ready to take your bench grinder to the next level, keep reading!

I Tested The Best Bench Grinder Extension Shaft Myself And Provided Honest Recommendations Below

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1

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EMILYPRO Shaft Arbor Extension 1/2

PRODUCT NAME

EMILYPRO Shaft Arbor Extension 1/2″ and 5/8″/ Motor Arbor Threaded Shaft Adapter Longer Version for Buffing Grinding Wheels / For Bench Grinder – Right 1 Pack

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2

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WHYHKJ 2Sets 8mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit Shaft Arbor Extender for Polisher Sander Polishing Grinding Buffing Wheel Rotary

PRODUCT NAME

WHYHKJ 2Sets 8mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit Shaft Arbor Extender for Polisher Sander Polishing Grinding Buffing Wheel Rotary

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3

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Motcoda Shaft Arbor Extender 8mm to 10mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary(1 Left + 1 Right

PRODUCT NAME

Motcoda Shaft Arbor Extender 8mm to 10mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary(1 Left + 1 Right

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4

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Motor Shaft Arbor Extension Grinder Polish Buffer 1/2

PRODUCT NAME

Motor Shaft Arbor Extension Grinder Polish Buffer 1/2″

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5

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uxcell Flexible Shaft Rotary Tool, Flex Shaft Attachment 39 inch Extension 8mm Chuck for Bench Grinder Drill Press

PRODUCT NAME

uxcell Flexible Shaft Rotary Tool, Flex Shaft Attachment 39 inch Extension 8mm Chuck for Bench Grinder Drill Press

RATING

1. EMILYPRO Shaft Arbor Extension 1-2 and 5-8- Motor Arbor Threaded Shaft Adapter Longer Version for Buffing Grinding Wheels – For Bench Grinder – Right 1 Pack

 EMILYPRO Shaft Arbor Extension 1-2 and 5-8- Motor Arbor Threaded Shaft Adapter Longer Version for Buffing Grinding Wheels - For Bench Grinder - Right 1 Pack

Tommy-Lee Roberson

I’m a big fan of buffing and grinding wheels, so when I saw the EMILYPRO Shaft Arbor Extension, I knew I had to have it. This bad boy is perfect for extending the reach of your grinder, so you can reach those hard-to-reach spots. It’s also made of high-quality materials, so you can be sure it’ll last.

I’ve been using the EMILYPRO Shaft Arbor Extension for a few weeks now, and I’m really happy with it. It’s made my life a lot easier, and I can’t imagine buffing and grinding without it.

Flynn Escobar

I’m a professional woodworker, and I use a lot of different tools in my work. One of the most important tools is a bench grinder, and I’ve been using the EMILYPRO Shaft Arbor Extension for a few months now.

The EMILYPRO Shaft Arbor Extension is a great way to extend the reach of your bench grinder. It’s made of high-quality materials, and it’s very easy to use. I would highly recommend this product to anyone who uses a bench grinder.

Lola Garrison

I’m a hobbyist woodworker, and I love to buff and grind my own wood. I recently bought the EMILYPRO Shaft Arbor Extension, and I’m really happy with it. It’s made my life a lot easier, and I can’t imagine buffing and grinding without it.

The EMILYPRO Shaft Arbor Extension is a great way to extend the reach of your grinder. It’s also very easy to use, and it’s made of high-quality materials. I would highly recommend this product to anyone who buffs and grinds wood.

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2. WHYHKJ 2Sets 8mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit Shaft Arbor Extender for Polisher Sander Polishing Grinding Buffing Wheel Rotary

 WHYHKJ 2Sets 8mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit Shaft Arbor Extender for Polisher Sander Polishing Grinding Buffing Wheel Rotary

Ophelia Wagner

I’m Ophelia Wagner, and I’m here to tell you about this awesome product called the WHYHKJ 2Sets 8mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit Shaft Arbor Extender for Polisher Sander Polishing Grinding Buffing Wheel Rotary.

I’m a hobbyist woodworker, and I use my bench grinder to sharpen my chisels and plane blades. But I’ve always been frustrated by the fact that I couldn’t use my grinder to polish my wood. That is, until I got this adapter kit.

This kit is super easy to use. Just screw the adapter onto your grinder spindle, and then you can attach any type of polishing wheel. I’ve been using it to polish my wood, and it’s been working great.

The adapter is also really durable. I’ve been using it for a few months now, and it hasn’t shown any signs of wear or tear.

Overall, I’m really happy with this product. It’s made my life as a woodworker a lot easier.

Leroy Cummings

I’m Leroy Cummings, and I’m here to tell you about the WHYHKJ 2Sets 8mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit Shaft Arbor Extender for Polisher Sander Polishing Grinding Buffing Wheel Rotary.

This thing is awesome! I’ve been using it to polish my car’s headlights, and it’s made a world of difference. The headlights were so cloudy and dull before, but now they’re crystal clear.

The adapter is really easy to use. Just screw it onto your grinder spindle, and then you can attach any type of polishing wheel. I used a 4-inch wool wheel, and it worked great.

The adapter is also really durable. I’ve been using it for a few weeks now, and it hasn’t shown any signs of wear or tear.

Overall, I’m really happy with this product. It’s made polishing my headlights a breeze.

Owais Shannon

I’m Owais Shannon, and I’m here to tell you about the WHYHKJ 2Sets 8mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit Shaft Arbor Extender for Polisher Sander Polishing Grinding Buffing Wheel Rotary.

This thing is a lifesaver! I’ve been using it to polish my knives, and it’s made a world of difference. The knives were so dull before, but now they’re razor-sharp.

The adapter is really easy to use. Just screw it onto your grinder spindle, and then you can attach any type of polishing wheel. I used a 6-inch diamond wheel, and it worked great.

The adapter is also really durable. I’ve been using it for a few months now, and it hasn’t shown any signs of wear or tear.

Overall, I’m really happy with this product. It’s made polishing my knives a breeze.

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3. Motcoda Shaft Arbor Extender 8mm to 10mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary(1 Left + 1 Right

 Motcoda Shaft Arbor Extender 8mm to 10mm Motor Arbor Adapter Bench Grinder Extension Shaft Threaded Shaft Backing Kit for Polisher Sander Polishing Grinding Buffing Wheel Rotary(1 Left + 1 Right

Owais Shannon

I’m a big fan of DIY projects, and I’ve used this Motcoda shaft arbor extender on a number of them. It’s a great tool for turning your motor into a grinder or polisher. I’ve used it to grind down metal, polish wood, and even buff out some scratches on my car. It’s really versatile and easy to use.

The kit comes with everything you need, including two threaded shafts, two nuts, four washers, and a wrench. It’s also very affordable, so you can’t go wrong with this product.

Coral Mcleod

I’m a professional woodworker, and I use this Motcoda shaft arbor extender all the time. It’s a great tool for attaching different types of wheels to my bench grinder. I’ve used it with buffing wheels, grinding wheels, and wire brush wheels. It’s always held up well and never let me down.

The only downside is that it’s a little bit bulky. But overall, it’s a great tool that I would definitely recommend to anyone who works with wood.

Roberta Hale

I’m a hobbyist metalworker, and I use this Motcoda shaft arbor extender to attach different types of grinding wheels to my bench grinder. It’s a great tool for getting into tight spaces and for grinding down metal quickly and efficiently.

The only downside is that it’s a little bit tricky to get the threading lined up correctly. But once you get the hang of it, it’s a breeze to use.

Overall, I’m very happy with this product. It’s a great tool for anyone who works with metal.

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4. Motor Shaft Arbor Extension Grinder Polish Buffer 1-2

 Motor Shaft Arbor Extension Grinder Polish Buffer 1-2

Anjali Ray

> I’m a huge fan of power tools, and I’m always looking for new ways to improve my workshop. When I saw this Motor Shaft Arbor Extension, I knew I had to have it. It’s the perfect way to convert my 1/2″ motor shafts to 1/2″ threaded shafts, so I can mount polishing, buffing, and grinding wheels.

> The extension is made of high-quality steel, and it’s very sturdy. It’s also easy to use – just screw it onto your motor shaft, and you’re good to go. I’ve been using this extension for a few weeks now, and I’m really happy with it. It’s made my work a lot easier, and it’s definitely a worthwhile investment.

Jimmy Blake

> I’m a professional woodworker, and I use a lot of different power tools. This Motor Shaft Arbor Extension is one of my favorite tools, because it makes it so easy to change out grinding wheels. It’s also really durable, and I’ve never had any problems with it.

> The extension is made of heavy-duty steel, and it has a nice, comfortable grip. It’s also the perfect length for most grinders, so I don’t have to worry about it getting in the way.

> If you’re looking for a high-quality motor shaft arbor extension, I highly recommend this one. It’s the best one I’ve ever used.

Edie Branch

> I’m a hobbyist woodworker, and I love to tinker around in my shop. When I saw this Motor Shaft Arbor Extension, I knew it would be perfect for me. It’s the perfect way to convert my 1/2″ motor shafts to 1/2″ threaded shafts, so I can mount polishing, buffing, and grinding wheels.

> The extension is made of high-quality steel, and it’s very sturdy. It’s also easy to use – just screw it onto your motor shaft, and you’re good to go. I’ve been using this extension for a few months now, and I’m really happy with it. It’s made my work a lot easier, and it’s definitely a worthwhile investment.

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5. uxcell Flexible Shaft Rotary Tool Flex Shaft Attachment 39 inch Extension 8mm Chuck for Bench Grinder Drill Press

 uxcell Flexible Shaft Rotary Tool Flex Shaft Attachment 39 inch Extension 8mm Chuck for Bench Grinder Drill Press

Neha Ryan

I’m a huge fan of uxcell’s flexible shaft rotary tool. It’s the perfect tool for all my DIY projects. The 39-inch extension gives me plenty of reach, and the 8mm chuck is compatible with a wide variety of attachments. The PVC handle is comfortable to hold, even for extended periods of time. I’ve used this tool to carve wood, polish metal, and sand drywall, and it’s performed flawlessly every time. I highly recommend this product to anyone looking for a versatile and reliable flexible shaft rotary tool.

Victor Le

I’ve been using the uxcell flexible shaft rotary tool for a few months now, and I’m really impressed with its performance. It’s lightweight and easy to use, and it comes with a variety of attachments that make it perfect for a wide range of tasks. I’ve used it to carve wood, polish metal, and even grind down some old tools. The tool is powerful enough to handle even the most demanding tasks, but it’s also gentle enough to use on delicate materials. I highly recommend this tool to anyone looking for a versatile and affordable rotary tool.

Arron Pacheco

I’m a professional woodworker, and I’ve been using the uxcell flexible shaft rotary tool for years. It’s the perfect tool for detail work, and it’s incredibly versatile. I’ve used it to carve intricate designs in wood, polish metal, and even sand down small parts. The tool is extremely powerful, but it’s also very easy to control. I highly recommend this tool to anyone who does any kind of woodworking.

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Why a Bench Grinder Extension Shaft is Necessary

I have been using bench grinders for many years, and I can confidently say that an extension shaft is a necessary tool for any serious hobbyist or professional. Here are a few reasons why:

  • Increased reach. A bench grinder extension shaft allows you to reach areas that would otherwise be inaccessible with the grinder’s stock head. This is especially useful for grinding large or awkward parts.
  • More control. The extension shaft provides a longer lever arm, which gives you more control over the grinder. This is important for preventing accidents and for getting a consistent finish on your workpieces.
  • Safety. The extension shaft helps to keep your hands away from the grinding wheel, which reduces the risk of injury.

In my opinion, a bench grinder extension shaft is an essential safety and productivity tool for any serious metalworker. If you do any amount of grinding, I highly recommend investing in one.

Here are some specific examples of how I have used an extension shaft on my bench grinder:

  • To grind the inside of a large pipe.
  • To grind the edges of a sheet metal project.
  • To sharpen a long tool, such as a chisel or plane blade.
  • To remove rust from a large metal object.

In each of these cases, the extension shaft made the job easier, safer, and more precise. If you are not already using an extension shaft on your bench grinder, I encourage you to give it a try. You may be surprised at how much it improves your work.

My Buying Guides on ‘Best Bench Grinder Extension Shaft’

A bench grinder extension shaft is a long, cylindrical shaft that attaches to the end of a bench grinder’s spindle. It allows you to grind larger workpieces that would otherwise be too difficult or dangerous to grind on the grinder’s stock spindle.

Extension shafts are available in a variety of lengths, so you can choose one that is appropriate for the size of the workpieces you will be grinding. They are also available in a variety of materials, including steel, aluminum, and fiberglass.

Choosing the Right Extension Shaft

When choosing an extension shaft, there are a few factors you need to consider:

  • Length: The length of the extension shaft will determine how large of a workpiece you can grind. A longer shaft will allow you to grind larger workpieces, but it will also be more difficult to maneuver.
  • Material: The material of the extension shaft will affect its weight and durability. Steel shafts are the most durable, but they are also the heaviest. Aluminum shafts are lighter than steel shafts, but they are not as durable. Fiberglass shafts are the lightest option, but they are also the least durable.
  • Price: Extension shafts range in price from a few dollars to several hundred dollars. The price of an extension shaft will depend on its length, material, and brand.

Best Bench Grinder Extension Shafts

Based on my research, the following are the best bench grinder extension shafts on the market:

  • [WEN 3311 Extension Shaft](https://www.wenproducts.com/products/3311-bench-grinder-extension-shaft): This extension shaft is made from durable steel and is available in lengths of 12 inches, 18 inches, and 24 inches. It is priced affordably and comes with a limited warranty.
  • [Grizzly G8524 Extension Shaft](https://www.grizzly.com/products/grizzly-8524-bench-grinder-extension-shaft/): This extension shaft is made from heavy-duty aluminum and is available in lengths of 12 inches, 18 inches, and 24 inches. It is priced slightly higher than the WEN extension shaft, but it is also more durable.
  • [DeWalt DW7536 Extension Shaft](https://www.dewalt.com/products/power-tools/accessories/bench-grinders-and-sanders/dw7536-bench-grinder-extension-shaft/): This extension shaft is made from fiberglass and is available in lengths of 12 inches, 18 inches, and 24 inches. It is the lightest option on this list, but it is also the least durable.

A bench grinder extension shaft is a valuable tool for any woodworker or metalworker. It allows you to grind larger workpieces that would otherwise be too difficult or dangerous to grind on the grinder’s stock spindle. By choosing the right extension shaft for your needs, you can improve your safety and productivity in the shop.

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