Buy JET 577101 6-Inch Industrial Bench GrinderJET 577101 6-Inch Industrial Bench Grinder Product Description:
- UL listed, 1/2-horsepower 1-phase motor
- Totally enclosed pre-lubricated ball bearings
- Heavy-duty guarded toggle switch on 8 and 10 inches
- Rubber mounts prevent movement
- Includes two 6-inch wheels (36-grit and 60-grit)
Product Description
If you have things that need cleaning, sharpening, buffing, removing rust, or removing burs from metal, then you need this JET 6in. Industrial Bench Grinder. Features heavy-duty construction with powerful, long-life motor for use all day, every day. It comes standard with fine and coarse vitrified grinding wheels, cast iron wheel guards and dust vents, and more. Wheel Included: Yes, 2, Dimensions L x W x H (in.): 18 x 8 1/2 x 10 1/2, Wheel Diameter (in.): 6, Speed (RPM): 3,450, HP: 1/2
Customer Reviews
Most helpful customer reviews
9 of 10 people found the following review helpful.
Great, after some "tweaking."
By e-grunt
I originally went with the Jet 6" bench grinder instead of cheaper options because of the positive reviews about smoothness and adequate power posted earlier. When I received mine and tried it out for the first time, there was a considerable wobble/vibration in one of the wheels. The fine wheel on the left had a slight wobble, but was o.k., however the course wheel on the right had a good 1/8" wobble at the outer circumference. This caused the whole machine to have an annoying noise / vibration at full speed and to "shudder" briefly at about 1/3 speed upon wind-up and slow-down.I must say, at this point though, that aside from the wobble issue, the whole grinder seems very well built and is incredibly "Beefy." I was very impressed with the cast iron wheel housings and tool rests, ... much better than the stamped sheet metal on cheaper models. The unit was nice and heavy and did not budge during normal use just sitting on its rubber feet on my workbench. The motor seemed very powerful and did not bog down at all under any normal usage.I sent the machine back to Amazon for a return (which went very smoothly), in hopes that the second machine would live up to earlier reviews in regards to smoothness. The second machine was much better, but there was still a slight wobble, maybe 1/16" visible upon slow rotation of the wheels by hand. The noise and vibration during operation was much less noticeable than the earlier machine.Looking more closely at the construction and possible culprits, it appeared to me that the stamped "cup" flanges on either side of the wheels may not have been stamped perfectly flat/true from one surface to the other. There is a larger diameter flat surface on the inside (against the wheel) and a smaller diameter flat surface on the outside (against the nut or shaft shoulder) with about 1/8" offset. If the two surfaces aren't parallel, even a little bit, in that 1" radius, it will introduce quite a wobble by the time you get out to 6 inches. This time I called Jet customer service and they agreed to send me 4 new stamped flange washers.Upon the arrival of the new flange washers, they did look a lot better than the originals. I installed them and they did help some. Finally, thinking that the stock supplied wheels may not be perfectly flat/round either, I used a diamond wheel dresser to lightly dress the sides and face of the wheels. This also helped considerably. It is currently running quite smoothly, ... probably 98%, well within acceptable levels.Another "Tweak" for anyone wanting to run a wire brush:When I got the machine, I was pleased because it looked like the wheel housings had adequate space to run a wide face wire brush on one side, so I went out and bought a nice Forney wire wheel. However, when I went to install it, I realized that the space was just marginally enough, and that you could not install a wire wheel using the original supplied flanges. My "work-around" was to go to the hardware store and get a couple of the thinnest grade-8 7/16" flat washers that I could find. I actually ended up going to 2 places because the ones that Aubuchon Hardware carried were just a hair thinner than the ones at Ace, which actually did make a difference, ... the wide face wheel has to be perfectly centered or the wires will rub on the inside of the housing. A 7/16" (made to go on a 7/16" bolt) flat washer is "supposed to be" 1/2" inside dia., however, because a washer is not a precision fit, the stamping will often leave slightly less clearance. A 1/2" washer (made for use with a 1/2" bolt) will have too much "slop," so the best bet is to get 7/16" washer and just smooth up the inside with a Dremmel tool and a small sanding drum. This will allow you to get a perfect fit on the 1/2" shaft. If you want to run a narrow face wire wheel, using a "stack" of washers on either side of the wheel would probably work well. Make sure to look through the bin at the hardware store to find the flattest / thinnest (for the wide face wheel) ones in the bunch as there is more variation than I expected.Another thing you might run into is that the nut/shaft-threads on one side that holds the wheel on is right-hand thread and the other side is left-hand thread. This is great for keeping the wheels from loosening up during operation, but makes it really tough for loosening and tightening down the nuts when changing wheels, especially if you end up with them both loose/off at the same time. Tightening one wheel will loosen the other. However, if you look at the end of the shaft on the left side, there is a slot that fits a 5/16" flat screwdriver perfectly.Having a flat somewhere on the shaft for a wrench, or even a detent button to lock the shaft (like on an angle grinder or Dremmel tool) might have worked a lot better, but I have never seen a bench grinder with this feature. The instruction booklet just tells you to hold firmly onto the other wheel, but if that one is not tight already, or if it is not quite as tight as the one you're working on, you're kind of screwed. Using the 5/16" screwdriver is adequate, but it's difficult to get the nuts good and tight working against a screwdriver with a wrench. As soon as I have time, I'm going to get a long handled 5/16" flat screwdriver to dedicate to the bench grinder. I'll heat up the shaft of the screwdriver about 2" behind the end and bend it at a 90 in the vise. This way I'll be able stick the end in the slot and rest the handle on the bench and have a positive hold while tightening down the wheel nuts.One last thing that might have been thought out slightly better is the adjustment mechanism for the eye guards. There is a nice little hand knob on one side of each adjustment, which is great, but the other side of the fastener is a #3 Phillips screw. So, even though you have a handy-dandy adjustable knob, you still need a screw driver to complete the adjustment. Next time I'm in the hardware store, I'm going to search the little drawers for some kind of 1/4-20 (1/2" -3/4" long threaded portion) male wing-nut or knob to make this completely hand-adjustable.Hope this helps, Mike
5 of 6 people found the following review helpful.Good Grinder, But Poor Tool Rests
By Farmboy
I bought this grinder from J&L in 2000 for about half the 2012 price. I agree with the other reviewers that the grinder is well-built and operates smoothly. The original wheels are adequate and well balanced. After 12 years of moderate use, the grinder runs as well as when I bought it.The tool rests are cast iron, which I viewed as a selling point. However, they are minimally adjustable, and cannot be raised at or above center. This makes the grinder difficult to use for grinding lathe cutting tools and drill bits. Large non-precision items such as axes and mower blades are not a problem.
1 of 1 people found the following review helpful.
Jet Bench Grinder JBG-6A
By Indyfire3a
This Bench Grinder has absolutely no vibration straight out of the box. It was easy to assemble and is very well built. I would recommend this product to anyone who is looking for a bench grinder that is priced medium range. I purchased this item from Amazon.com as a used item, but this item was new and had absolutely no scars or blemishes that would hamper the use of this product.
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