|Home » Forums ╗ Cabinet and Millwork Installation ╗ Message||Login|
You are not logged in. Consider these WOODWEB Member advantages:
Rebuilding Waldkin shaper spindle6/7
I bought a used Waldkin shaper and I think the spindle bearings are needing replaced. How hard is this to do or what kind of cost should I expect to replace it? It is the Waldkin bel series, 9 hp 3ph machine with a 1.25" spindle. Thanks in advance for any input.
I suspect their quill assembly is very similar to most other industrial machines. The biggest trick is figuring out how the interchangeable spindle comes out. Several of the machines I've had apart use a double thread system. The nut had one pitch and the spindle has a different one. It allows the spindle to rotate either way w/o unscrewing and it pulls the taper tight into the socket. It also helps put the spindle out of the socket. The big bearing and seals will be on the top. You may need a pin type spanner to take the cap off. There will be some sort of spring load to allow heat expansion. Most often star washers. Take note of how they are arranged before you take them off. Camera! Also there may be a matched set of bearings designed for pre-load. Take note of their orientation. The races are ground differently than the typical ball bearing. There will be some sort of mark on them indicating the force direction. Keep track of it. There may also be some shims used for the pre-load. A bearing separator may be needed to get behind the bearing so it can be pulled. We've got a hydraulic press and always use that to push bearings on & off. If you have mechanical pullers they may work OK. Or just take it to most any machine shop or auto repair shop and have them push them. Sometimes bearings are really tight. A little heat helps. The entire spindle assembly can be pretty heavy & awkward to handle in the tight space. A 2nd person helps a lot. Use that digital camera/phone or something to keep track of how the parts come off. Industrial supply houses will carry or get the bearings for you. Take note of the last letter on the bearing #'s. It indicates clearance. You don't want too tight of clearance. Typically a "C" rated bearing.
I haven't done a Wadkin, but I've done a Martin and a SCM T-160 which sound like similar class shapers. I would expect to spend several hundred $ on the bearings and at least half a day labor depending on how familiar you are with this type of work in general. Other than that Larry has a lot of good input already. Oh and definitely use the camera that's a must. I usually take notes as well just to make sure.
Just on another note, this shaper does not have a miter slot and I'm wondering what the logic is for that. I have never used a shaper that didn't have one.. I wonder why they built these without one. Maybe someone can enlighten me.
It's a British machine! They went bust, couldn't compete. You just answered why.
Don't know, but I guess I look at it more like what the heck are you doing with a miter slot on a shaper anyway? I can't fathom using one in any practical way.
FWIW while Wadkin went out, Martin is still in business and their machines do not have miter slots. If they didn't think shapers needed them thenů.??? Griggio and other Euro machines don't usually have them either. Some SCM do, but again I don't know why?
Don't mean to be ignorant here but some types of jigs and cope cuts usually use the slot as a guide. Maybe I'm calling by the wrong name but just talking about the slot that is parallel to the spindle. Also Waldkin is still in business I think. I've been dealing with Waldkin North America based here in the states.
Guide a sled, locate jigs & auxiliary tables, etc.
Turns out that the spindle was out of round as well by .015 which I have now at the machine shop getting reworked. I thought it was just the bearings that were bad.
I had to straighten one of my spindles as well. Wasn't a big deal to do in the machine, but it could be safer having a shop do it for you.
I don't use miter slots for anything. All my sleds are shop built, as simple as it gets, and better than anything I've seen for sale. Not bragging as they really are nothing special in any way, I'm just not a big fan of buying jigs. And if your shaper has a good quality fence with micro adjust, registering jigs off the fence is fast, easy, and really accurate.
Wadkin while still in business I'm not sure if they support the older machines? I thought I heard they separated themselves some years back. These days I think their main focus is on bigger molding machines.