bench grinder help

[bls2dpj]

My neighbor gave me this little Craftsman bench grinder. It works really well but it needs a new belt. The only problem is I cannot figure out how to install a new one.

The only way I see is to pull the shaft out. Is this correct? Any other solutions?

Thanks
DJ

 

[930dreamer]

Have you unbolted the grinder from the base to see how the belt attach? It's a cool setup, I haven't seen one before.

 

[bls2dpj]

A couple more pics.
DJ

 

[Rezarf]

Sure, unbolt the motor, lift it up for some slack, install new belt and reinstall the motor. Or are you saying the access to the grinder pully is the problem?

 

[bls2dpj]

YES access to the grinder pulley is an issue. I need to put the belt around the pulley at the top but there is no way to slide the belt over it.

DJ

 

[benny27]

you could get a link belt and not have to take any thing off then

 

[930dreamer]

Unless it's some type of two piece babbit bearing setup, there should be a way to remove the belt.

 

[bls2dpj]

I couldn't find anyway to remove the belt without taking the shaft off, but I don't see how to do that without damaging the bearings. The link belt may be the way to go.

DJ

 

[premierplayer]

Why would you think you'll damage the bearings? Originally the shaft was installed without damaging the bearings. Care and patience.
Can we get a picture of the inside/rear of the head assy that shows the shaft, pully, and termination at the bearings.
Two piece pully?

 

[Lightfoot]

if that housing is a one piece deal (and it looks like it is), then the only way i see is to take the shaft out, but it shouldn't be that hard to do. I wouldn't think the bearings would be in danger if you're careful. Just soak it good with w-d or something similar, maybe get the surface rust off the shaft ends, they should come out.

Man, i love that! I've never seen one like it.

 

[930dreamer]

I wonder if the pulley has a set screw that allows the shaft to slide out?

 

[torqueman2002]

Try these guys. Lots of vintage machine over there.
http://www.owwm.org/ucp.php?mode=login

 

[bls2dpj]

More pics

 

[bls2dpj]

I wonder if the pulley has a set screw that allows the shaft to slide out?

I pulled the set screws out so I could slide the pulley over to align with the motor pulley. It didn't look like a 2 piece shaft.

DJ

 

[bluebolt]

Here you go! This guy over on OWWM has a lot of info. Click on the link for the pictures. http://vintagemachinery.org/photoindex/detail.aspx?id=10760

">>MACHINE<<
Craftsman ball bearing belt driven bench grinder.
Original manufacturer unknown--no casting marks.
Two speed V-belt pulley: 1¾" & 2½"
Threaded arbors: ½-24
Original bearings: MRC_202-SFF (USA, double shield)
Replacement bearings: NTN (Canada) 6202LL (double seal)
Machined steel arbor flanges, 1¾" diameter.
Missing LH guard (if anyone has one they don't need, please contact me).

>>HISTORY<<
Aug 2009: BOYD trade with fellow OWWMer.

Feb 2010: Disassembled. Used split bearing puller to remove inner flanges.
Shaft removal: http://www.owwm.org/viewtopic.php?f=1&t=70095&p=491851

Mar 2010: Washed parts in Zep Purple cleaner and wire wheeled rusted items.
Spot-faced shaft in two places for pulley set screws.

Apr 2010: Painted castings. Primer-Krylon gray. Two top coats-Krylon Oxford Blue Satin.

May 2010: Machined .002" from LH shaft bearing surface to allow slip fit.
(This will allow the grinder to be easily disassembled for belt installation.)
Replaced thin guard and tool rest washers.
Craftsman logo tag--tapped body for 4-40 machine screws at drive screw locations.

Jun 2010: Test run.
Companion 115.5454 1/3hp 1750rpm motor, cone pulley using 2¾" & 3½" grooves,
Craftsman 2730 floating motor mount, Craftsman 2140 16x18 steel frame stand.
The grinder runs around 3500 & 1900rpm.
I'll use the RH side (with guard) for grinding and the LH for buff or wire wheels.
The LH tool rest tucks out of the way by mounting backward in the guard attachment hole"

 

[bls2dpj]

Holy cow!! That's what I needed. Thanks for all the info. Looks like a nice little challenging project.

DJ

 

[Outlawmws]

Yes, you will have to either slide the shaft out of the housing, or go to the link belt. Certainly the link belt is easiest, and supposed to be quieter too. (Lathe adn mill beople use them all the time so they are not a bad thing)

There will be one or more set screws holding the pulley in place. If they have managed to raise marks on the shaft with set screws, once the pulley is a bit to the side, carefully file them flat so you don't have to drag them through the bearing sleeves.

 

[bluebolt]

Since no one has mentioned it so far since the guy gave it to you ****!!! Nice piece.

 

[bls2dpj]

Since no one has mentioned it so far since the guy gave it to you ****!!! Nice piece.

Thank you for the compliment!!! LOL

DJ

 

[930dreamer]

Yup major suckage.

 

[bls2dpj]

Yup major suckage.

Would you like a little cheese with that whine!! LOL

DJ