The following general formula should be used for determining the actual applied load:
L = 126,000 x HP x F x LF

WHERE L = Actual Applied Load (lbs)

    N = Shaft Speed (RPM)

    D = Pitch Diameter (in) of Sheave, etc.

    F = Load Factor

          1.0 for Chain or Gear Drive, 1.5 for Timing Belts,
          2.5 for All V Belts, 3.5 for Flat Belts

    LF = 2.1 for Reciprocating Compressors and other Severe
          Shock Drives and 1.8 for Large Inertia Type Drives
          i.e. crushers, chippers, planers, etc.)

TO CALCULATE APPLICATION TORQUE:

    5252 x HP/Engine RPM = Torque
    Torque x Load Factor = Application Torque
    Use load factor from chart below

LOAD CLASSIFICATIONS BASED UPON AGMA LOAD CHARACTERISTICS

		Uniform	Moderate Shock	Heavy Shock
	Up to 3 hours per day	1.00	1.25	1.50
Electric motor	3–10 hours per day	1.00	1.25	1.75
	Over 10 hours per day	1.25	1.50	2.00
Multi-cylinder internal	Up to 3 hours per day	1.00	1.25	1.75
combustion engine	3–10 hours per day	1.25	1.50	2.00
	Over 10 hours per day	1.50	1.75	2.25
Multi-cylinder internal	Up to 3 hours per day	1.50	1.75	2.25
combustion engine	3–10 hours per day	1.75	2.00	2.50
with high torque rise	Over 10 hours per day	2.00	2.25	2.75
Single cylinder internal	Up to 3 hours per day	1.25	1.50	2.00
combustion engine	3–10 hours per day	1.50	1.75	2.25
	Over 10 hours per day	1.75	2.00	2.50

All clutch engagements to be with prime mover below 1000 RPM.
High inertia loads may require use of larger clutch.
Contact Twin Disc application engineering department for assistance.