New bellows couplings from Sterling Instrument (an ISO 9001:2000 + AS9100B Manufacturer) incorporate patented integral Fairloc® hubs which feature built-in overload protection, full use of the bore, easy adjustment, eliminates marred shafts, and offers a compact self-contained design. They are stocked in both inch and metric sizes.

These couplings, identified as the S50FP9-FBC... (Inch) and the S50FP9MFBC... (Metric), correct for angular and parallel axis misalignment, provide zero backlash, offer constant angular velocity, and dampens vibration and noise. These 14 couplings are designed to fit shafts ranging in diameter from .1200" to .3750" (3 mm to 12 mm). The diameter of the bellows range from 15/32” to 27/32” (11.9 mm to 21.4 mm).

The choice of Fairloc® hubs permits frequent phase adjustment, timing and position adjustment while adding positive metal-to-metal fastening strength along both hub sections. The Fairloc® integral hub fastener consists of two slots that are machined into the hub, one radially and the other angularly, to create a transverse wedge which remains attached to the solid portion of the hub on one side. The resultant cantilevered clamping section has a tapped hole to accept a cap screw which passes through a clearance hole in the solid portion of the hub, and into a threaded hole in the transverse wedge section. As the screw is tightened, the cantilevered section clamps the shaft securely. The screw can be tightened and released repeatedly without marring the shaft or affecting its torque-transmitting abilities

SDP1-20

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