Perfect for retrofits where existing shafting is worn and rusted, Power Plastics static shaft sleeve bushings reduce costs and installation time in rectangular clarifiers. As an alternative to a dynamic system where sprockets run directly on turning idler shafts, this system allows idler sprockets to rotate freely on PPC static shaft bushings, while existing shafts can be immobilized and reused. (On new installations, the static system does not require bearings for the idler axles, and only fixed steel shaft supports are needed). Static bushings are secured to the shafts with setscrews or clamps as the sprockets rotate on the sleeve’s smooth outer surface between integral set collars. Made from corrosion resistant, self- lubricating Nylon, Power Plastics split static shaft sleeves are easy to assemble, eliminating the need for shaft and bearing replacement. Static shaft sleeve bushings are also available in UHMW-PE material.
| P/N | Required Sprocket: Bore | Maximum Size Shaft | A* | B* | D* |
|---|---|---|---|---|---|
| NSB375 | 3-3/4" idler | 2-15/16" | 4" | 6" | 4-1/2" |
| NSB500 | 5" idler | 6" | 4" | 6" | 6" |
| NSB525 | 5-1/4" idler | 4-1/2" | 4" | 6" | 6-1/4" |
| NSB600 | 6" idler | 5-1/4" | 4" | 6" | 7" |
Eliminates the need for wall bearings or sprocket collars Allow the reuse of old shafts that have poor finishes Integral set collars prevent lateral movement of the gear for self-alignment gear.
Materials: Lubricated Nylon
Color: Green
Hardness: R115-120
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