Greetings to All –
I recently finished fine tuning my Jet JTS contractor saw. As part of this tune up, I installed a contractor saw performance pkg (machined pulleys and link belt). While reading through the installation instructions, I noticed that they recommend adjusting the motor shaft so that it is parallel to the arbor. Admittedly, for the longest time this is something I overlooked. But after giving it some consideration, I am left wondering how I might go about doing this in such a way that the shaft and arbor are aligned to the same tolerances ( or at least close) as the rest of the components, as opposed to just “eyeballing” it. Anyone have any suggestions/ideas as to how I might accomplish this? Thanks in advance for your support.
T2
Replies
Getting the side of the motor parallel to the back edge of the table is adequate, I usually just do this by eye, it isn't an especially critical adjustment in that it won't affect the saws ability to cut well unless it is very far off.
John W.
A high level of accuracy is not necessary. Just put a level on your tabletop parallel to the arbor shaft. Shim the legs a little bit with scraps of wood and/or playing cards. Once it's level, transfer the level to the top of the motor and adjust it until it too is level.
As I said high precision is not required.
Just a quick question. I thought the Jet came with machined pulleys. The belt gives you 90-95% of the smoothness even if the pulleys are cast.
Howie,
The factory pulleys are lightweight (presumably aluminum) and to my knowledge, cast. The aftermarket pulleys are quite a bit heavier and machined (I'm probably stating the obvious here). But as I understand it, the arbor pulley has a slightly smaller diameter than the factory pulley resulting in a higher blade RPM. To those who have installed these upgrades on their contractor saws, keep me honest - is this the case?
T2
Edited 10/29/2004 3:34 pm ET by TRUSCHE2
Easy to calculate your rpm:
RPM of motor X (diameter of drive pully) divided by (diameter of arbor pully) = arbor rpm.
i.e.: 1725 x 2/3 = 1150
Leon Jester, Roanoke VA
Q: How do you know when a politician is lying?
A: His lips are moving.
Hi, TRUSCHE2
I hope this is what you asked...
My Jet contractor came with instructions for aligning the motor to the arbor by laying a straight edge along the motor pully and making sure the edge aligned with both edges of the arbor pully. It was a pain, but eventually I got it.
If you mean how do you adjust them in the other axis, I guess you could add shims between the motor and the mount.
Putting a link belt on the saw will give you a drastic reduction in vibration whether you do this or not.
Regards,
Dan
how difficult is all the setup? I have to admit I'm not very good with my hands or have a lot of patience setting things up that require a lot of minute adjustments. Any chance the setup is mostly plug-n-play?
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