Large Coupling Bores Sprag clutches are severely limited in bore capacity. By placing the sprag clutch on a high strength shaft in the spacer of the coupling, the clutch bore is no longer limiting. Thus, the SGK Clutch Coupling is selected on torque, not bore considerations, and is normally more economical than conventional over-running clutch couplings.
Superior Misalignment The standard SGK Clutch Coupling is capable of up to 1-1/2º angular misalignment per gear half. The long distance between gear coupling halves ensures excellent offset (parallel) misalignment. For high misalignment conditions, spindle-type gear couplings are available to extend misalignment capabilities to 6º per gear half.
Easy to Install and Service As simple to install as a gear coupling. The clutch is assembled in the center spacer part of the coupling. The clutch-spacer assembly acts as a drop-out section and can be installed / removed without disturbing driver or driven shafts.
Low Maintenance The SGK 400 and 600 Series clutches are oil-lubricated with 200% greater lube capacity than the standard sprag clutch by virtue of the oil reservoir.
Long Life With proper maintenance, the Series 400 will provide many years of trouble free operation. For applications where the over-running speed is significantly higher than the drive speed (such as inching drives, creeper drives, turning-gear drives, etc.) the SGK Series 600 clutch couplings can be used. Centrifugal throwout sprags are balanced to completely lift off the race above the drive speed resulting in unlimited sprag life.
Taconite-Type Seals The Series 400 and Series 600 Clutch Couplings are equipped with a very effective taconite-type seal to protect the oil seal. This seal is regreasable to purge abrasive contaminants from the oil seal area. The taconite-type seal includes a “V” ring face seal to allow for longer periods between seal regreasing.