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WINstub Thru-Shaft Elminator

  • Lighter in Weight- With a maximum length of 8 inches, the WINstub is significantly lighter than a thru-shaft in an idler roller. The longer the roll, the greater the weight advantage.
  • Easier to Install- With a lighter roll and the HUBstub and NUBstub being able to retract into a roll, installation can be faster and easier than thru-shafts.
  • Lower Cost- While WINstubs are made of the same 1045 hard chrome plated, ground and polished steel as our WINshafts, they are less expensive to manufacture. We pass the savings to our customers!

The WINstub product line is a low-cost, smart alternative to thru-shafts used with dead-shaft idler rolls. Available in the HUBstub or NUBstub design, it is a new way of mounting idler rollers. Traditional thru-shafts are very difficult to install and remove from a fixed framework that is fully assembled. WINstubs are a fraction of the weight of a thru-shaft and both the HUBstub and NUBstub can retract into the idler roller. This makes installation faster and easier.

By eliminating the thru-shaft, we also eliminate the potential of excessive bending of long and slender shafts. At higher idlers speeds, long shafts can go into resonant frequency whip. This is a very dangerous up and down movement that can cause machine vibration damage and possible injury to machine operators. WINstubs do not go all the way through the roller, so they cannot go into this up and down motion at high speeds. The result is safer equipment, less vibration and less risk to employees.

All WINstub designs are of 1045 hard chrome plated that is ground and polished, the same material as our WINshaft.


  • Length8 inches (includes a hub length of 2 inches)
  • Frame Width5-12 inches wider than the idler face width (for frame width distances less than 5 inches use NUBstub) Ra Ra
  • Available Diameters1″, 1-1/4″, and 1-1/2″


  • Length5 inches (with no hub)
  • Frame Width1-5 inches wider than the idler face width Ra
  • Available Diameters25mm, 1″, 1-1/4″, 1-1/2″, 40mm and 2″
  • Note:The 2 inch diameter NUBstub also comes in an 8 inch length