Fordiesel69 263 #1 Posted October 18 Anyone have photos of the hub Lincoln sells. It sounds really good and Id almost like to covert my two XI's over before they become damaged. I am just having trouble understanding how they work. Share this post Link to post Share on other sites
squonk 41,051 #2 Posted October 18 (edited) A-Z hub is 2 piece. Center of the new inner hub is tapered and has a slot lengthwise. You slide the outer hub piece onto the axle then slide the inner piece with the key slot into position. Slide the outer piece onto the inner piece. Line up the non threaded holes of the outer piece with the the threaded holes of the inner piece. Install bolts and torque to spec evenly. This draws both pieces together and they wedge themselves tight and the slotted inner piece "clamps down" on the axle. To remove: Remove bolts and install them into the threaded holes of the outer piece and as you tighten them they will push the outer piece in and off the inner piece. Use a screwdriver in the slot of the inner piece to open the bore to remove. Edited October 18 by squonk 3 Share this post Link to post Share on other sites
WHX?? 48,813 #3 Posted October 18 (edited) The pieces are tapered and the inside piece gets drawn into the hub with bolts wedging & clamping the axles tight. The threaded holes are for backing the inside piece out for easy removal. Very common usage on electric motor drives. They will not come off or loosen unless needed. The Squonky is a faster typer... Edited October 18 by WHX?? 1 Share this post Link to post Share on other sites
ri702bill 8,311 #4 Posted October 18 (edited) Taper Loc bushings have been around for decades and are a Machine Design standard. The benefits outweigh the minor drawbacks. The inner part has a keyway that you may, or, may not wish to use. Once installed, it grips the shaft all around tightly with No slipping. Also NOT affected by reversing directions, unlike camlock devices. The outer could be one of several devices, a cam, a sprocket, a gear, or in this case a specialized hub. Their claim to fame is that they are easily installed and removed WITHOUT damage to the shaft. Makes repositioning or rotational timing changes easy. The same 3 setscrews used to install are the same 3 jacking bolts used in the other set of holes to jack the assembly apart. Pretty neat.... the only "drawback" is the axial movement of the 2 components upon assembly or removal. As the outer part of the assembly climbs inward, it moves slightly away from you - an 1/8" or so - not an issue here. DO leave at least a 3/16" gap on the axle from the inside of the hub to the Unidrive. I have specified & used these for 40 years or so on custom Automated Production Machines with no component failures. The only other issue is if the OD of the shaft is severely chewed up from a loose hub. Neither a new OE WH hub or this device will work out. Time for another axle. Edited October 18 by ri702bill Share this post Link to post Share on other sites
