360 TECHNICAL INFORMATION Ko : Application Coefficient (Table 4) Ki : Idler Correction Factor (Table 5) Kr : Speed Multiplication Correction Factor (Table 6) Kh : Operation Time Correction Factor (Table 7) Table 5. Correction Coefficient when Idler is Used (Ki) Location of Idler in Use Inside Outside Loose Side of the Belt 0 +0.1 Tense Side of the Belt + 0.1 +0.2 Should be applied for each idler. Table 6. Speed Increase Correction Coefficient (Kr) Speed Increase Ratio Correction Coefficient 1 to 1.25 0 1.25 to 1.75 + 0.1 1.75 to 2.5 + 0.2 2.5 to 3.5 + 0.3 3.5 or more + 0.4 Table 7. Operating time Correction Coefficient (Kh) Operation Hours Correction Coefficient Operated 10 or More Hours a Day +0.1 Operated 20 or More Hours a Day +0.2 Operated 500 Hours or Less (For Seasonal Operation) −0.2 [Step 2-b] Calculating Design Power ……For P_M/UP_M Series t%FTJHO 1PXFS 1E 5SBOTNJTTJPO 1PXFS 1U Y 0WFSMPBE 'BDUPS ,T ∙ Calculate Transmission Power at Motor Rated Power Output. (It is ideal to calculate from the actual load applied to the belt.) ∙ Normal Motor Load Factor (Ks)=Ko+Ki+Kr+Kh Table 2. Speed Ratio Correction Coefficient (Kr) Speed Ratio Coefficient (Kr) 1.00 to 1.25 0 1.25 to 1.75 0.1 1.75 to 2.50 0.2 2.50 to 3.50 0.3 3.50 or more 0.4 Table 3. Idlers Correction Coefficient (Ki) Position of Idler Coefficient (Ki) Outside the loose side of the belt 0 Inside the loose side of the belt 0.1 Outside the tensioned side of the belt 0.1 Inside the tensioned side of the belt 0.2 Table 4. Service Coefficient (Ko) Type of Motor Type of Driven machine Peak Output/Basic Output 200% or Less 200 to 300 300% or More A Extremely Smooth Transmission 1.0 1.2 1.4 B Fairly Smooth Transmission 1.3 1.5 1.7 C Transmission with Moderate Impact 1.6 1.8 2.0 D Transmission with Considerable Impact 1.8 2.0 2.2 E Transmission with Large Impact 2.0 2.2 2.5 Motor AC Motor Single-Phase − − All Types Squirrel-Cage Induction 2 Poles 100kW or More 90~3.7kW 2.2kW or Less 4 Poles 55kW or More 45kW or Less − 6 Poles 37kW or More 30kW or Less − 8 Poles 15kW or More 11kW or Less − Wire-Wound 4 Poles − 15kW or Less 11kW or Less 6 Poles − 11kW or Less 7.5kW or Less 8 Poles − 5.5kW or Less 3.7kW or Less Synchronous Motor − Average Torque High Torque DC Motor Shunt Compound Series Internal Combustion Engine 8 or More Cylinders 7 ~ 5 Cylinders 4 ~ 2 Cylinders Hydraulic Motor − − All Types Note) For transmission involving forward/reverse operation, a large moment of inertia, extremely large impact, etc., the basic service coefficient may be 2.5 or more. Type Typical Driven Machines A Measuring Instrument, Camera Device, Radar, Medical Machine, Projector B Belt Conveyor (For Light Load) Chain Conveyor (For Light Load) Driller Press, Lathe, Screw Machine Electric Typewriter, Calculator, Duplicator, Printing Press, Cutter, Paper Folder, Printer, Mixer, CalenderDryer, Lathe, Belt Sawing Machine, Plane, Circular Sawing Machine, Planer, Mixer (Liquid), Bread Baking Machine, Flour Kneading Machine, Sifter (Drum and Cone), Sawing Machine C Belt Conveyor (Ore, Coal, Sand), Elevator, Boring Mill, Grinder, Milling Machine, Shaper, Metal Sawing Machine, Wind Hoist, Dryer, Washing Machine (Including a Wringer), Excavator, Mixer, Granulating Machine, Pump (Centrifugal, Gear and Rotary), Compressor (High-Speed Center), Stirrer, Mixer (Viscous Matter), Centrifugal Forced Blower, General Rubber Handling Machine, Power Generator, Sifter (Electric) D Conveyor (Apron, Bucket, Flight, Screw), Hoist, Cutting Press, Shattering Machine, Pulp Manufacturing Machine, Weaving Machine, Spinning Machine, Twisting Machine, Blender, Centrifugal Separator, Blower (Axial Flow, for Mining and Roots), General Construction Equipment, Hammer Mill, Rollgang E Crank Press, Pump (Reciprocal), Compressor (Reciprocating), Civil Engineering, Mining Equipment Including Crushing Machine (Ball, Rod, Gravel), Rubber Mixer
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