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JET 8-Inch Bench Grinder, 3450 RPM, 1/2 HP, 1Ph 115V (JBG-8A)

4.6 4.6 out of 5 stars 390 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Power Bench Grinders by Jet

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8-Inch Bench Grinder

Purchase options and add-ons

Brand Jet
Material Alloy Steel, Cast Iron
Product Dimensions 19"L x 12.5"W x 10"H
Style 8-Inch Bench Grinder
Power Source electric-powered

About this item

  • Variable Grinding: Fine (60-grit) and coarse (36-grit) vitrified grinding wheels
  • Long Machine Life: Totally-enclosed pre-lubricated ball bearings
  • Built for Durability: Cast iron wheel guards and dust vents
  • No Shifting: Rubber mounts prevent movement
  • Added Safety: Follows strict guidelines and electrical requirements to meet CSA safety standards
› See more product details

Customer ratings by feature

Sturdiness
4.6 4.6
Value for money
4.6 4.6
See all reviews

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From the brand

From the manufacturer

grinder

JET 8-Inch Shop Bench Grinder

For shops that may be short on space, a cast iron JET Bench Grinder delivers work power and pristine finishes. Built to withstand the high-volume demands of even the busiest shops, this high-quality machine grinds, sharpens and smooths with equal precision and flawless results

grinder

  • For added safety, the JBG-8B follows strict guidelines and electrical requirements
  • Totally enclosed pre-lubricated ball bearings
  • Rubber mounts prevent movement
  • Heavy-duty guarded toggle switch
  • Cast iron wheel guards and dust vents

grinder2

  • One-piece quick adjusting spark guards
  • Large eye shields with quick adjustment
  • Adjustable tool rests
  • Fine and coarse vitrified grinding wheels

JET JBG-10B 6" Industrial Bench Grinder (577101) JET JBG-8B 8" Bench Grinder (577102) JET JBG-10B 10" Bench Grinder (577103)
JET JBG-6B, 6-Inch Industrial Bench Grinder (577101) JET JBG-8B, 8-Inch Bench Grinder (577102) JET JBG-10B, 10-Inch Bench Grinder (577103)
Customer Reviews
4.5 out of 5 stars
129
4.6 out of 5 stars
390
4.4 out of 5 stars
31
Price $265.00 — $689.00
Wheel Size (D x W x Bore) 6" x 3/4" x 1/2" 8" x 1" x 5/8" 10" x 1 x 1"
Motor (RPM) 3,450 3,450 1,725
Wheels Included/Grit 36 & 60 36 & 60 24 & 46
Horsepower 1/2 1 1-1/2
Voltage 120V, 1PH 120V, 1PH 120V, 1PH
Weight (Lbs) 38 60 119
JET Banner - metalworking

Product information

Technical Details

Additional Information

Warranty & Support

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Product Warranty: For warranty information about this product, please click here

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JET 8-Inch Bench Grinder, 3450 RPM, 1/2 HP, 1Ph 115V (JBG-8A)

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Product guides and documents

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Product Description

Product Description

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Perfect for cleaning, sharpening, buffing, removing rust, or removing burs from metal, the Jet 577102 JBG-8A bench grinder comes with industrial grade 36-grit and 60-grit 8-inch wheels for maximum versatility. The 1-horsepower, 115-volt motor operates at 3,450 rpm and delivers plenty of power for heavy grinding. The grinder sits on a rubber foot to prevent unwanted movement and can be bolted down if desired for maximum stability. This 8-inch model also includes a heavy-duty guarded toggle switch.



The Jet 577102 features totally enclosed pre-lubricated ball bearings, cast-iron wheel guards and dust vents, one-piece quick adjusting spark guards, and large eye shields with quick adjustment for maximum safety. It's backed by a 2-year limited warranty.

What's in the Box

One Jet 577102 JBG-8A bench grinder, two 8-inch wheels (36-grit and 60-grit), hardware, and operating and assembly instructions.

Specifications

  • Motor: 1 horsepower, 1 phase, 115 volt
  • Wheel diameter: 8-inch diameter, 1-inch thickness
  • Wheel speed: 3,450 rpm
  • Wheel grits: 36 and 60
  • Shaft diameter: 5/8-inch
  • Dimensions: 19 inches by 12-1/2 inches by 10 inches
  • Warranty: 2 years, limited





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Details
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Price-36% $279.00
List: $437.14		$146.29$127.07$139.79-15% $469.00
List: $550.00		$295.00
Delivery
Get it as soon as Monday, May 6
Get it as soon as Friday, May 3
Get it as soon as Friday, May 3
Get it as soon as Thursday, May 9
Get it May 15 - 16
—
Customer Ratings
4.64.6 out of 5 stars390
4.84.8 out of 5 stars55
4.64.6 out of 5 stars4,973
4.54.5 out of 5 stars1,538
4.74.7 out of 5 stars253
4.54.5 out of 5 stars94
Value for money
4.6
5.0
4.4
4.2
4.4
4.4
Easy to assemble
—
—
4.5
4.3
4.7
4.8
Sturdiness
4.6
—
—
4.1
4.8
—
Safety Features
—
5.0
4.4
4.4
—
—
Sheerness
—
—
4.3
4.2
4.2
—
Sold By
Amazon.com
Vera Tools
Amazon.com
Amazon.com
MaxTool
Amazon.com
power source
electric-powered
Corded Electric
Corded Electric
AC
Corded Electric
Corded Electric
max rotational speed
3450 rpm
—
3400 rpm
3400 rpm
3600 rpm
3450 rpm
voltage
120 volts
120 volts
—
—
115 volts
115 volts
style
8-Inch Bench Grinder
8'' Bench Grinder
Variable Speed
2021 Model
Industrial Bench Grinder
Grinder
weight
58 pounds
—
—
41 pounds
44 pounds
31 pounds

Important information

Bulb Voltage

120 volts

Customer reviews

4.6 out of 5 stars
4.6 out of 5
390 global ratings

Customers say

Customers like the performance, speed and quality of the disc grinder. For example, they mention it works well, runs smoothly and is well made. Some are happy with alignment, power, and value. That said, opinions are mixed on durability and vibration.

AI-generated from the text of customer reviews

72 customers mention59 positive13 negative

Customers like the quality of the disc grinder tool. They say it's very well made, sturdy, and holds up great. Some customers also mention that the tool rests are 3/8" thick machined parts. Overall, most are satisfied with the quality and power of the product.

"...small but since this is not an industrial grinder they are adequate for normal shop use. Will be attached to floor for actual use...." Read more

"...I was skeptical that it would be that much better, but this is a serious grinder...." Read more

"...I'm a mechanic, and have worked in many shops. This is very well made. The tool rest are 3/8" thick machined parts. The stone guards are cast iron...." Read more

"It’s rock solid. Nice 90 degree work rests. Nothing flimsy. The rpms are really high...." Read more

40 customers mention37 positive3 negative

Customers are satisfied with the speed of the disc grinder. They mention that it runs very smoothly with plenty of power. The wheels run very smooth with no to minimal vibration. The machine gets up to speed quickly and the powerful motor spins up quickly.

"...Fast start up, smooth running, powerful and worth every penny.I have had several cheaper grinders and not one will compare to this beast...." Read more

"Very Good Grinder for a small shop. Well built and out of the box very smooth running with no real vibration...." Read more

"It’s rock solid. Nice 90 degree work rests. Nothing flimsy. The rpms are really high...." Read more

"...I then videoed how it starts and runs. Starts up fast and I could not ask for something smoother: Or should I say, I am very satisfied with how..." Read more

36 customers mention29 positive7 negative

Customers like the performance of the disc grinder tool. For example, they mention it has tons of power, does their jobs in a fraction of the time, and has no problems. Some say the grinding wheels are too soft and wear down. Overall, most are satisfied with the tool's performance.

"...We ordered another a month ago and it is working perfectly in our shop...." Read more

"...I attached some after market items on the grinder and it's working well. I use it almost every day...." Read more

"...So far so good. So I grabbed a horse shoe for some testing. This thing is amazing...." Read more

"very good product" Read more

29 customers mention29 positive0 negative

Customers are satisfied with the power of the disc grinder. They mention that it has great power, does the job well, and does not bog down under heavy loads. Some appreciate the 8A grounded power and the heavy duty construction.

"...Fast start up, smooth running, powerful and worth every penny.I have had several cheaper grinders and not one will compare to this beast...." Read more

"...The wheels don't wobble, it's powerful as can be, and it's silent compared to all of our other grinders...." Read more

"...Still way bigger and more powerful than I usually need." Read more

"Been using for sharpening mower blades and small metal projects….good power and minimal vibration… 4 stars due to the design of the guard brackets…..." Read more

20 customers mention20 positive0 negative

Customers appreciate the value of the disc grinder tool. They say it's built like a tank and is well worth the price.

"...Fast start up, smooth running, powerful and worth every penny.I have had several cheaper grinders and not one will compare to this beast...." Read more

"...They’re pricey, but we would happily pay double considering the time it’s saved us compared to cheap models." Read more

"...this grinder to anyone looking for a great product at an affordable price ." Read more

"...hard to slow it down , good power, very nicely done and worth the extra money!!" Read more

15 customers mention12 positive3 negative

Customers like the alignment of the disc grinder tool. They say the wheels are properly dressed and balanced, and the fit and finish were fine. Some say the wheel runs very smooth and quiet, and that the original wheels aren't terrible. Overall, most are happy with the alignment and performance of the tool.

"...These are pretty nice. One has a slight wobble. This is an expensive tool. But quality comes at a premium. I am very pleased...." Read more

"...I am totally happy with this purchase. I have not had to do any balancing...." Read more

"It's nice. If you're using a wire wheel 1.5 hp would be perfect" Read more

"...grinder's name plate: it is attached skewed to one side, not centered like in the pictures...." Read more

29 customers mention20 positive9 negative

Customers are mixed about the vibration of the disc grinder. Some mention that there is essentially no vibration, while others say that there's some vibration from the balance of the wheels.

"...Mounted on a medium sized cast iron stand and never moves or tried to walk off the spot when tested...." Read more

"...The wheels don't wobble, it's powerful as can be, and it's silent compared to all of our other grinders...." Read more

"...These are pretty nice. One has a slight wobble. This is an expensive tool. But quality comes at a premium. I am very pleased...." Read more

"...Really surprised how quiet it is. And mine has zero wobble or vibration. So far so good. So I grabbed a horse shoe for some testing...." Read more

22 customers mention15 positive7 negative

Customers are mixed about the durability of the disc grinder tool. Some mention that it has great power and runs quietly, while others say that one of the cast iron wheel guards was broken off the motor and the shaft. The wheel was broken in half due to poor packaging. Some customers also say that the package was slightly damaged, causing the left guard to be loose.

"...The wheels don't wobble, it's powerful as can be, and it's silent compared to all of our other grinders...." Read more

"...And it's extremely quiet. Really surprised how quiet it is. And mine has zero wobble or vibration. So far so good...." Read more

"Plugged it up, it ran for a few seconds, then tripped the breaker. Unplugged everything in the shop, same thing. Tripped the breaker!..." Read more

"...it runs as smooth as silk with no to minimal vibration, quiet allowing normal conversation to take place while running...." Read more

This thing is a smooth running beast!
5 Stars
This thing is a smooth running beast!
I needed a good grinder after I knowing better tried a 3/4 HP Harbor freight cheap grinder. You'd barely even touch the grinding wheel and the speed would drop off and the thing would stop. Not with this grinder. It gets up to speed quickly. And it's extremely quiet. Really surprised how quiet it is. And mine has zero wobble or vibration. So far so good. So I grabbed a horse shoe for some testing. This thing is amazing. I put a ton of pressure on the grinding wheel and it just chewed through the steel horse shoe. I'm sure it had to have slowed a little but honestly I didn't notice a RPM change. Or it speeding up when I removed pressure. No longer do I need to grind a little and then wait for the grinder to speed back up. This thing powered through even when I really applied some pressure to it. It was between this and a Baldor and I'm super happy I saved all that money and went with the Jet 1 HP 8". You wont find a better grinder and I'd be willing to bet it'll beat some of the extremely expensive grinders out there. I could not be happy with this thing.
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Top reviews from the United States

Ed
5.0 out of 5 stars Powerful and awesome
Reviewed in the United States on December 14, 2021
Style: 8-Inch Bench GrinderVerified Purchase
The media could not be loaded.
 This grinder is legit.

Fast start up, smooth running, powerful and worth every penny.

I have had several cheaper grinders and not one will compare to this beast. I fitted mine with a home made 2x48 belt grinder attachment and I turn it on almost every day. I use it to make knives, sharper ANYTHING, sand wood, polish, deburr and pretty much anything else you can think of.

You will not be disappointed.
Customer image
Ed
5.0 out of 5 stars Powerful and awesome
Reviewed in the United States on December 14, 2021
This grinder is legit.

Fast start up, smooth running, powerful and worth every penny.

I have had several cheaper grinders and not one will compare to this beast. I fitted mine with a home made 2x48 belt grinder attachment and I turn it on almost every day. I use it to make knives, sharper ANYTHING, sand wood, polish, deburr and pretty much anything else you can think of.

You will not be disappointed.
Images in this review
Customer image Customer image Customer image
Customer imageCustomer imageCustomer image
6 people found this helpful
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Jimmy Z
5.0 out of 5 stars Powerful and Smooth Running
Reviewed in the United States on November 26, 2016
Style: 8-Inch Bench GrinderVerified Purchase
Very Good Grinder for a small shop. Well built and out of the box very smooth running with no real vibration. Mounted on a medium sized cast iron stand and never moves or tried to walk off the spot when tested. Cast iron tool rests are a little small but since this is not an industrial grinder they are adequate for normal shop use. Will be attached to floor for actual use. Ordered from Amazon warehouse deals for some savings and came poorly repackaged but completely intact with all the parts. I have very little trouble with UPS and they did well with this very heavy item flopping around in a large carton. Although this item is only slightly more complex than an anvil, i really appreciate that the instructions/parts list were in two small books, one in English and one throw away in Spanish. i often refuse to even look at an item that has packaging or documentation in so many multiple languages you can barely tell what it is. This alone makes it a five star.
18 people found this helpful
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Matt
5.0 out of 5 stars Well worth it!
Reviewed in the United States on July 30, 2018
Style: 8-Inch Bench GrinderVerified Purchase
We switched one of our old Harbor Freight specials at the shop for this one. I was skeptical that it would be that much better, but this is a serious grinder. The wheels don't wobble, it's powerful as can be, and it's silent compared to all of our other grinders. The price is hefty, but will worth it if you are using it daily. We will be switching out all of our grinders for Jets in the coming months.

Update 9/14

We ordered another a month ago and it is working perfectly in our shop. They’re pricey, but we would happily pay double considering the time it’s saved us compared to cheap models.
17 people found this helpful
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Ross N.
5.0 out of 5 stars Very well built!
Reviewed in the United States on January 18, 2023
Style: 8-Inch Bench GrinderVerified Purchase
This is the best built grinder I've ever seen. I'm a mechanic, and have worked in many shops. This is very well made. The tool rest are 3/8" thick machined parts. The stone guards are cast iron. Most grinders come with cheap stones that have to be replaced right away. These are pretty nice. One has a slight wobble. This is an expensive tool. But quality comes at a premium. I am very pleased. I am completely done with cheap products. Buy nice, or buy twice!
3 people found this helpful
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Michael
4.0 out of 5 stars Best Available
Reviewed in the United States on January 3, 2022
Style: 8-Inch Bench GrinderVerified Purchase
Like so many other people, I found much of metal and wood working equipment made today is not made as good as it was years ago. I have several bench grinders in my shop, a 6", 8" and 10". And I have been using them daily for many years. When my 8" stop working, I replaced it with one of the major brands and much to my disappointment it malfunctioned right out of the box. So I returned it. I was looking for a bench grinder around the $400 range. After more research, I ended up buying the Jet. For the most part this grinder got good reviews. However some reviews reflected "they just don't make them like they used to." When turned it on for the first time, one of the wheel had a wobble. After trying to fix it, I ended up replacing the bad wheel. I guess I should be thankful it was just a bad wheel and not something else like a bad shaft. I attached some after market items on the grinder and it's working well. I use it almost every day. It's early-on but I think it's going to be real good grinder. If not for the bad wheel, that should have been seen by the manufacturer, I would have rated it 5 stars.
7 people found this helpful
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Debbie
5.0 out of 5 stars Great price
Reviewed in the United States on February 19, 2024
Style: 8-Inch Bench GrinderVerified Purchase
No problem
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Clarence Higbee
5.0 out of 5 stars Nice grinder. And it’s a biggun
Reviewed in the United States on December 21, 2020
Style: 8-Inch Bench GrinderVerified Purchase
It’s rock solid. Nice 90 degree work rests. Nothing flimsy. The rpms are really high. I put a wire wheel on it and the wind from the thing would push the work piece away. I’ve bogged it down with a buffing wheel once or twice, but I was really laying into it trying to get sandpaper scratches out of a knife blank. That’s the grinders only moment of weakness that I can think of. I do have it set up where I need an extension cord so I’m probably losing a little power there. Still way bigger and more powerful than I usually need.
16 people found this helpful
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Delta Kilo
5.0 out of 5 stars This thing is a smooth running beast!
Reviewed in the United States on August 2, 2018
Style: 8-Inch Bench GrinderVerified Purchase
I needed a good grinder after I knowing better tried a 3/4 HP Harbor freight cheap grinder. You'd barely even touch the grinding wheel and the speed would drop off and the thing would stop. Not with this grinder. It gets up to speed quickly. And it's extremely quiet. Really surprised how quiet it is. And mine has zero wobble or vibration. So far so good. So I grabbed a horse shoe for some testing. This thing is amazing. I put a ton of pressure on the grinding wheel and it just chewed through the steel horse shoe. I'm sure it had to have slowed a little but honestly I didn't notice a RPM change. Or it speeding up when I removed pressure. No longer do I need to grind a little and then wait for the grinder to speed back up. This thing powered through even when I really applied some pressure to it. It was between this and a Baldor and I'm super happy I saved all that money and went with the Jet 1 HP 8". You wont find a better grinder and I'd be willing to bet it'll beat some of the extremely expensive grinders out there. I could not be happy with this thing.
Customer image
Delta Kilo
5.0 out of 5 stars This thing is a smooth running beast!
Reviewed in the United States on August 2, 2018
I needed a good grinder after I knowing better tried a 3/4 HP Harbor freight cheap grinder. You'd barely even touch the grinding wheel and the speed would drop off and the thing would stop. Not with this grinder. It gets up to speed quickly. And it's extremely quiet. Really surprised how quiet it is. And mine has zero wobble or vibration. So far so good. So I grabbed a horse shoe for some testing. This thing is amazing. I put a ton of pressure on the grinding wheel and it just chewed through the steel horse shoe. I'm sure it had to have slowed a little but honestly I didn't notice a RPM change. Or it speeding up when I removed pressure. No longer do I need to grind a little and then wait for the grinder to speed back up. This thing powered through even when I really applied some pressure to it. It was between this and a Baldor and I'm super happy I saved all that money and went with the Jet 1 HP 8". You wont find a better grinder and I'd be willing to bet it'll beat some of the extremely expensive grinders out there. I could not be happy with this thing.
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Mario
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