Question about Craftsman 6" Bench Grinder with Lamp

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How to tighten the nuts on either side of the 6'' bench grinder. I tried hoding he oppisiete side thinking they tightened in opposite directions but no. OR, how to hold the shaft so the nuts can be tightened?

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Some models have a hole at the top and under the spark cover that allows for the insertion of a pin or nail to help lock the shaft.
Mine has a hole at the back of the protection plate that allows the shaft to be locked.
Holding the opposing wheel also should allow you to tighten the nut as one is left hand and the other is right hand thread.
The nut can then be tightened
.I dont have a manual on your brand to see what they included to lock this one.

Thankis for using FIXYA

Posted on Sep 25, 2009

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Best bet is to hold the other side. Press something against the wheel, like a paint brush handle or similar.

I hope this helps


Posted on Sep 25, 2009


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1 Answer

How to put on a wire brush on a craftmans 6 inch bench grinder 21126

There is a left handed thread and a right handed thread on the arbors.

Right Hand Side (RH)
Wrap a piece of rubber or leather around the threads on the LH side of the arbor & hold with pliers, while turning the RH nut CCW.

Left Hand Side (LH)
Wrap a piece of rubber or leather around the threads on the RH side of the arbor & hold with pliers, while turning the LH nut CW.

Note: Hand tighten the nut, then 1/4 turn.

Right Hand Side (RH)
Wrap a piece of rubber or leather around the threads on the LH side of the arbor & hold with pliers, while turning the RH nut CW.

Left Hand Side (LH)
Wrap a piece of rubber or leather around the threads on the RH side of the arbor & hold with pliers, while turning the LH nut CWW.

For grinding stones:
  • ring test the stone
  • discard the stone if it has been dropped
  • be sure the paper washers are installed on the wheel

GRINDER SAFETY 101 (graphic injury video so be warned)

Aug 03, 2015 | Bench Grinders

1 Answer

How do i change a grinding wheel

Unplug the grinder. Remove the guard on the side you want to change. Grasp the wheel with one hand while you turn the nut with a wrench. Remove the nut and arbor washer from the arbor shaft, pull the wheel from the shaft and replace it with a new wheel - DO NOT remove the paper label! Put the arbor washer and nut back on, spin the nut down snug, grasp the new wheel with one hand while you tighten the nut with a wrench. DO NOT overtighten the nut.

It may help to grasp the SECOND wheel (which should still be tight) with one hand while you tighten the nut on the new wheel. It may also help to loosen & tighten & adjust the new wheel several times until it runs as straight as possible before you really tighten it.

After tightening down the nut, dress the wheel with a wheel dresser to get it to run as balanced as possible and give you a smooth round wheel so your workpieces don't bounce against the wheel and so it cuts freely. Repeat as necessary to keep the wheel cutting freely, and to keep the grinding surface flat.

Jul 21, 2014 | Hitachi GT15 BENCH GRINDER 150MM 6 INCH...

1 Answer

How do you change the wheels on this bench grinder

Once you get them snugged a little, you will probably have to hang onto one wheel while you tighten a nut. It's easier if you tighten down one wheel with the other wheel dismounted so you can really grab the arbor shaft.

Do NOT overtighten either wheel - it doesn't need it, and overtightening increases the risk of a catastrophic wheel explosion.

Apr 28, 2014 | Grinders

1 Answer

How do I tighten the nuts on my bench grinder?

A bench grinder has left handed threads on one shaft and right handed on the other,so that the grinding stones don't unscrew the nut as you grind something.I haven't ever gotten around to getting a bench grinder,but on my father's, I used to just hand tighten the nut,then grab the grinding wheel with my hand while tightening the nut with a wrench.(You don't have to make it real tight,as the wheel pushing against the nut will keep it tight)

May 04, 2012 | Heating & Cooling

2 Answers

How do you tighten the nuts when changing the wheels on a 6 inch craftsman bench grinder. Thank you...

Clamp the shaft behind one wheel with 'Channelock' or 'Visegrip' pliers, then tighten both nuts. Check the new wheels for 'off-center' running by spinning them with your hand. They may fit the shaft tight enough that there is no centering adjustment--use a 'wheel dresser' (either a stone type or a multi-wheel type) to true up the wheel so that there is no radial wobble. Hope this helps!

Oct 23, 2010 | Craftsman 10" Bench Grinder

3 Answers

How to stop shaft from turning to remove nut and replace wheel

If you put a wrench on the nut on the other end of the shaft, you have a 50/50 chance that the nut you want loose will come loose. If the wrong one comes loose, you can remove that nut completely (and the wheel) then take the nut with you to the store to buy another one. Then put two nuts back on and tighten them together as a jamb nut. Then try again. If the wrong nut still turns, you have to tighten the pair of nuts together tighter. good luck

Oct 08, 2010 | Craftsman 10" Bench Grinder

2 Answers

How do I lock up the axel on my bench grinder to retighten after replacing the wheels? Also what is the torque setting?

Just put a wrench on the nut on the opposite side to hold the spindle. They will both tighten at the same time. Tighten them "snug". The threads are made so the nuts will self tighten or should I say will not come loose due to the way the wheels turn and pressure from use is applied.

Dec 02, 2009 | Delta 23 - 725 8" Industrial Grinder

1 Answer


Below I included a link to the manual for your grinder.
However it will tell you the same thing I'm going to tell you.
Most bench top grinders do not come with a shaft lock. In order to loosen or tighten the retaining nut you need to place a small wooden wedge between the wheel and the metal wheel shroud. This will prevent the shaft from turning. This may seem archaic but it serves a good purpose by preventing the over-tightening of the retaining nut.
Hope this helps.

Oct 15, 2009 | Grinders

2 Answers


If the right side is a right-hand thread, the left side is opposite that -- left hand thread.


Sep 13, 2009 | Grinders

1 Answer

Lock nut on Makita 9069 is stuck & I can't loosen it. Using the lock nut wrench, but it won't budge. Any suggestions?

Make sure you are turning wrench and nut clockwise to remove nut and counterclock to put back on,you will never get nut off if turning counterclocwise,threads pitch is opposite to screw pitches.
You are tightening and did not know it maybe???
Other option:

Need to put lock nut wrench in a vise jaw and clamp, then place tool on wrench and press down and turn. This should give you added leverage to break loose nut,and btw make sure to turn clockwise to unscrew and clockwise to tighten,this is opposite of what you might do to tighten or untighten

Apr 09, 2009 | Makita 9069 9" Angle Grinder

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