15 #DriveLineHarmony Application Service Factor Conveyors Apron, Assembly, Belt, Chain, Flight, Screw 1.75 Bucket 1.75 Live Roll, Shaker and Reciprocating 3.0 Bridge, Travel or Trolley 2.50 Dredgers Cable Reel 2.0 Conveyors 1.50 Cutter Head, Jig Drive 2.5 Maneuvering Winch 1.75 Pumps (Uniform Load) 1.75 Screen Drive, Stacker 2.0 Utility Winch 2.0 Dynamometer 1.5 Elevators: Bucket, Centrifugal Discharge 1.75 Exciter, Generator 1.5 Extruder, Plastic 1.5 Fans Centrifugal 1.25 Cooling Tower 2.0 Forced Draft-Across the Line Start 1.75 Feeders Apron, Belt, Disc, Screw 1.25 Reciprocating 2.5 Food Industry Beet Slicer 2.0 Bottle- and Can-Filling Machine 1.5 Cereal Cooker 1.5 Dough Mixer, Meat Grinder 2.0 Forced-Draft Motor Driven through Fluid or Electro-Slip Clutch 1.25 Gas Recirculating 1.50 Induced Draft with Damper Control or Blade Cleaner 1.50 Induced Draft without Controls 2.0 Generators Even Load 1.25 Hoist or Railway Service 1.75 Welder Load 2.0 Hammermill 1.75 Laundry Washer or Tumbler 2.0 Line Shafts, Any Processing Machinery 1.5 Application Service Factor Aerators 2.5 Aggregate Processing, Cement, Mining Kilns Direct or on Line Shaft of Reducer With Final Drive Machined Spur Gears 2.25 With Single Helical or Herringbone Gears 2.0 Crushers, Ore or Stone 2.75 Dryer, Rotary 2.0 Grizzly 2.25 Hammermill or Hog 2.0 Tumbling Mill or Barrel 2.0 Agitators (also see Mixers) Vertical, Horizontal, Screw, Propeller, Paddle 1.25 Barge Haul Puller 1.75 Blowers Centrifugal 1.5 Lobe or Vane 1.5 Brewing and Distilling Bottle- and Can-Filling Machines 1.5 Brew Kettle 1.25 Cookers, Continuous Duty 1.5 Lauter Tub 1.75 Mash Tub 1.5 Scale Hopper, Frequent Peaks 2.0 Clarifier or Classifier 1.25 Clay-Working Industry Brick Press, Briquette Machine, Clay-Working Machine, Pug Mill 2.0 Compressors Centrifugal 1.25 Rotary, Lobe or Vane 1.5 Rotary, Screw 1.5 Reciprocating Direct Connected Refer to Equipment OEM Without Flywheels Refer to Equipment OEM With Flywheel and Gear between Compressor and Prime Monitor One Cylinder, Single Acting 3.0 One Cylinder, Double Acting 3.0 Two Cylinders, Single Acting 3.0 Two Cylinders, Double Acting 3.0 Three Cylinders, Single Acting 3.0 Three Cylinders, Double Acting 2.0 Four or More Cyl., Single Acting 2.5 Four or More Cyl., Double Acting 2.5 Continued on next page. Suggested service factors listed are typical values based on normal operation of the mechanical power transmission system. Quick Flex Couplings Service Factors for Applications www.jbj.co.uk/couplings.html
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