Variable Speed 8" Bench Grinder (21162)- Craftsman Professional-Tools-Bench & Stationary Power Tools-Bench Grinders
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Craftsman Professional Variable Speed 8'' Bench Grinder (21162)

| Sears Exclusive. | Sears Item# 00921162000 | Model# 21162
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$152.99

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At a Glance

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8 in. bench grinder with variable speed control - 1725-3450 RPM - for a variety of grinding applications. Quick-change wheel guards, thin-line motor housing. Includes large, flexible work light with an independent on/off switch, one grinding, and one wire wheel for maximum versatility. Large, adjustable tool rests with patented attachment for accurate bit sharpening. Includes water cooling tray and hand-held wheel dresser. Cast Iron base reduces vibration and adds stability during use. Wide, clear eye shields and sturdy spark guards.

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Product Overview:
Warranty Detail: Craftsman Warranty
Type: Grinder
Controls, Overall:
On/Off Type: Switch
Motor-Engine:
Speed Capability: Variable
Speed Range RPM: 1725-3450 rpm

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Specifications & Dimensions

Product Overview:
Warranty Detail: Craftsman Warranty
Type: Grinder
Controls, Overall:
On/Off Type: Switch
Motor-Engine:
Speed Capability: Variable
Speed Range RPM: 1725-3450 rpm
General Features:
Bulb Type: Incandescent
Eye Shield Type: Clear
Grinder Size: 8 in.
Includes Spark Arrest: Wheel guard
Others:
Style: Bench
Type: Grinder

Overview

Ratings & Reviews

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Product Description

8 in. bench grinder with variable speed control - 1725-3450 RPM - for a variety of grinding applications. Quick-change wheel guards, thin-line motor housing. Includes large, flexible work light with an independent on/off switch, one grinding, and one wire wheel for maximum versatility. Large, adjustable tool rests with patented attachment for accurate bit sharpening. Includes water cooling tray and hand-held wheel dresser. Cast Iron base reduces vibration and adds stability during use. Wide, clear eye shields and sturdy spark guards.

  • Sears Exclusive

Added on February 16, 2009

 

Customer Ratings And Reviews

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    Written Reviews

    Overall Rating

    (35 reviews)

    23 of 35 (65%) customers would recommend this product to a friend.

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    Note: Some reviewers may have received a benefit, like a sweepstakes entry or rewards program points, in exchange for writing this review. The benefits were not conditioned on the positive or negative content of the review.

    Our most helpful positive review

    0 people thought this was helpful.


    Good enough for me. 8in vs grinder May 13, 2011

    Did it vibrate? Yes. Doesn't now. The big retaining washers probably are at the root of your vibration problems also. I faced the rock side of the washers in the lathe, only used the chuck to seat the washer against using the center to keep it in place. Just a couple of clean up cuts. Next ,to the surface grinder to face the other side, just enough to get a good seating surface. Good enough for me. I probably should not have given it a four star, But, I also understand what mass production turns out sometimes. I bought it, I like it, I don,t ***** to much. Freddie

    Our most helpful negative review

    0 people thought this was helpful.


    Be cautious of factory assembly August 30, 2010

    A spacer was left off during factory assembly which caused the grinder to vibrate and the grinding wheel to break. It bent the housing and destroyed the wheel. Working with Sears to replace the parts but am running into people problems. They seem to be more paperwork oriented than customer service oriented.

    The grinder has vibration issues which may be helped by using American made wheels.  I will replace wheel with quality part and I hope this will solve the vibration issue.


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    Product Reviews

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    This is a very nice grinder. May 11, 2012
    via Sears.com
    By cz-man of Halethorpe, MD
    See all of this author's reviews

    I bought one of these a few months ago because I was tired of using sandpaper in the shop to clean metal things. And I decided to spend the extra money for the variable speed control model. *wow*. I can see why my grandfather had a bench grinder on his work bench; this thing is exceptionally *useful*. It works well, cleans things with the wire brush, and the grinding wheel is much nicer than sitting around with hand files. The quality of this unit is excellent; made with metal and solid. The speed control is something I use a lot; buy it, you will be amazed at how much you use it. Overall an excellent value and my only regret is I didn't buy one years ago.

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    8 inch bench grinder May 08, 2012
    via Sears.com
    By rhunt13 of West Milton, OH
    See all of this author's reviews

    Unlike some of the reviews that said this grinder will vibrate badly, I did not experience this. In fact I have it sitting on my metal work bench not bolted down and it ran perfectly smooth. I like the variable speed control and overall I think it is top quality. I have owned a smaller 6 inch craftsman grinder that I took to our lake home and this one stays in my shop. I do a lot of welding and other mechanical jobs and would highly recommend this grinder. I love the drill bit sharping bench that fits on this grinder as well. You don't see this on a lot of the other grinders. A very good product.

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    Found a method to reduce vibration and kept mine April 29, 2012
    via Sears.com
    By JPSanders of Round Rock, TX
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    This grinder suffers from what I consider one major design flaw and two quality issues which can add up to a whole lot of vibration. The design flaw is insufficient seating area for the flange washers. The difference between the largest diameter (seating area) of the arbor and the wheel mounting area is only 0.046", meaning at *best* there is only 0.023" contact around the circumference of the shaft for the flange washer to seat against. Guys, to put that in perspective, that's less then 6 sheets of paper thick! Add in the washer inside diameter tolerance to make the flange washer fit over the shaft, and any chamfer on the ID of the flange washer, and the contact area goes down from there. To make matters worse, there is a relatively deep and wide (wider than the flange washer is thick) groove cut into the arbor at the seating area that the flange washers 'fall' into. The end result is poor reference between the arbor shaft and the flange washer, which can result in a perpendicularity issue between these parts, creating side-to-side wobble of the grinding or wire wheel. The quality issues stem from stamped flange washers that have wobble issues of their own, and a grinding wheel that also has flatness issues. Add all the tolerances up and it's totally hit or miss if your grinder will come out of the box running smooth or vibrate off the table. I admire the guy that trued up his flange washers on a lathe, but I don't have one. Can you true it up yourself? Maybe. I used a 12-step process (rotating the inner flange washer, the grinding wheel, and then the outer flange washer through each of 4 positions) that proved very repeatable to 'walk' the side-to-side wobble out of the grinding wheel. First the setup. Unplug the grinder. Use a black Sharpie to make an index mark on the end of the arbor. Use a silver sharpie to make index marks every 90 degrees (1, 2, 3, and 4 'tick' marks) on the EDGES of the flange washers and on the outside label for the grinding wheel. Line the single tick marks with the index mark on shaft, and tighten the arbor nut. The chamfered side of the nut should always face the arbor washer. Make sure everything is still lined up with the index mark on the end of the arbor after tightening. Spin the grinding wheel by hand and note the amount of wobble. (Since the wheel is moving so slowly, I placed my thumb on the inner shield and let the grinding wheel come very close, noting how much the gap changed. Loosen the arbor nut, pull the grinding wheel back out, and line up '2' tick mark on the inner flange washer with the index mark on the end of the arbor. All other parts should remain at the '1' tick mark, you only want to change one variable at a time. After repeating this process for all four tick marks on the inner flange washer, return it to whichever of the four positions produce the least wobble and keep it there. The index mark on the arbor shaft is always your reference. Repeat this process for the four positions of the grinding wheel, keeping the inner flange washer at it's best position, and the out washer still at tick mark '1'. Return the grinding wheel to the best of the four positions you tested. Keeping the inner flange washer and the grinding wheel in their best positions, repeat for the outer flange washer. You will probably see little effect with this last component, but it is the easiest one to adjust. Using this method, I can take components with approximately 1/8? of wobble and get it down to about 1/64?, if that. It?s really a shame to have to go through all this trouble though. Sears / Craftsman has always been my ?go-to? company for tools. But their attention to product design and product quality has really declined over the years and I?ve started buying other brands instead. In this case, I kept the Craftsman, but WAKE UP Sears / Craftsman!

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    Very well balanced February 27, 2012
    via Community Review
    By WEBC of Brookfield, MO
    See all of this author's reviews
    Pros:
    Powerful,good price,Speed control

    I was very surprised that this grinder was so well balanced, even with the stock grinding wheels. I also like the speed control knob, that way you can turn the rpm down to 1750 rpm for use with buffing wheels. The dressing wheel ain't much to speak of though, it sure isn't a "Desmond" dressing wheel.

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