Mechanical Power Take-Off Units Introduction 1 #DriveLineHarmony Power take-offs (PTOs) are used as a standard method for transmitting the power of engines in a great variety of industrial applications such as air compressors, agricultural machinery, crushers, road building machinery, cranes, shovels, pump drives and oil field service. Apower take-off consists of a complete clutch assembly with shaft and bearings mounted in a cast-iron housing for easy engine installation. Twin Disc offers power take-offs for all industrial engines. The IBF line is designed especially for today's high inertia applications and presently is offered in two- and three-clutch plate construction. This multiple-plate, ventilated design assures ample cooling area to withstand heat, and with solid friction plates, these PTOs can effectively handle the stress of higher engine speeds. The IBF units feature oil lubricated tapered roller bearings that extend lubrication intervals. An extramargin of strength. Actual design torque capacity of the clutches used in Twin Disc power take-offs is in excess of the horsepower rating listed. This permits Twin Disc power takeoffs in proper adjustment to withstand temporary torque overloads. Rated torque can be transmitted while moderately slipping during short periods without permanent damage. Specifications » Suitable for Duty Class II industrial applications with internal combustion engines up to 1243 kW (1667 hp) and with standard SAE flywheel housing dimensions fromNo. 6 through No. 00. » Contain clutches ranging in size from one plate SAE 6.5 to one plate SAE 14; in two-plate size fromSAE 11.5 to SAE 18; and three-plate size fromSAE 11.5 to SAE 21. » Standard sealed pilot ball or roller bearings eliminate the lubrication requirement and shaft rifle-drilling normally encountered with standard pilot bearings. Also available as options: ball bearing throw-out collars and finger springs. » kW/horsepower and torque capacities listed can be increased by the use of sintered-iron clutch plates, which are available as optional equipment in the SAE 8 through SAE 21 sizes. » All bearings, shafts and other parts are designed with liberal safety factors tomaximize life under normal operating conditions.* * To avoid overloading the shaft and bearings, use the allowable side-pull load data in this bulletin, and calculate the side load. The resultant value should be less than the correspondingmaximum value listed for each power take-off. For assistance please contact jbj Techniques Limited technical office, telephone: +44 (0)1737 767493 or email: info@jbj.co.uk IB Type Power Take-off Optional Pilot Bearings Ventilated Center Plates and Drive Ring Forged Steel Levers Centrifugal Assisted Release Tapered Roller Main Bearings Higher Side-Load Carrying Capacity SP Type Power Take-off Optional Pilot Bearings Forged Steel Levers Centrifugal Assisted Release Tapered Roller Main Bearings C(X) Type Power Take-off Ball or Tapered Roller Main Bearings Optional Pilot Bearings Single Friction Plate only www.jbj.co.uk/mechanical-power-conversion.html
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