AutomationDirect IronHorse HGR-37-005-A, Руководство пользователя

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Page 2–2 IronHorse® Helical Gearbox User Manual – 1st Ed. Rev. B
Chapter 2: Specifications
Gearbox Selection Factors
Service Factors and K Factors
Service Factors for Selecting Gearboxes
(when used with electric motors)
Service Continuity
(per day)
Load Characteristics
Uniform Moderate
Shock*
Heavy
Shock*
Extreme
Shock*
Occasional 1/2 hour 1.00 1.00 1.00 1.25
Less than 3 hours 1.00 1.00 1.25 1.50
3-10 hours 1.00 1.25 1.50 1.75
More than 10 hours 1.25 1.50 1.75 2.00
* Shock results from sudden increases in the torque demand of
the load, such as: sudden stopping, restarting, and/or reversing;
significantly heavy loads dropped onto a moving conveyor;
impact loads such as punch press operations.
Depending upon the load characteristics, divide the gearbox HP,
Overhung Load, and Maximum Mechanical Capacity ratings by
the applicable service factor.
Overhung Load K Factors
for Various Drive Types
Chain & Sprocket 1.00
Gear 1.25
V-belt 1.50
Flat Belt 2.50
Variable Pitch Belt 3.50
Divide gearbox OHL ratings by the
applicable OHL K factors.