When used on a motor nameplate, a number that indicates how much above the nameplate rating a motor can be loaded without causing serious degradation (i.e., a motor with 1.15 SF can produce 15 percent greater torque than one with a service factor of 1.0).
A multiplier which, when applied to rated power, indicates a permissible power loading that may be carried under the conditions specified for the service factor.
A factor recommended by the coupling manufacturer to assure proper sizing of a coupling for a specific application.
a Measure of the overload capacity designed into a motor
A measure of the reserve margin built into a motor. Listed on the motor nameplate, the service factor (SF) is multiplied by the rated horsepower indicating a permissible load that can be accommodated by the motor when it is operating at its rated voltage and frequency. For example, a 1-horsepower motor showing a service factor of 1.35 on the nameplate can effectively deliver 1.35 horsepower.
A measure of the reserve margin built into a motor. Motors rated more than 1.0 SF have more than normal margin and are used where unusual conditions such as occasional high or low voltage, momentary overloads and so forth are likely to occur.
The reserve margin built into a motor--e.g., a service factor of 1.25 means that the motor can deliver 25% more than its rated horsepower without dangerously overheating.
1. When used on a motor nameplate, a number which indicates how much above the nameplate rating a motor can be loaded without causing serious degradation, (i.e., a 1.15 S-F can produce 15% greater torque than the 1.0 S-F rating of the same motor). 2. When used in applying motors or gearmotors, a figure of merit which is used to "adjust" measured loads in an attempt to compensate for conditions which are difficult to measure or define. Typically, measured loads are multiplied by service factors (experience factors) and the result in an "equivalent required torque" rating of a motor or gearmotor.
A multiplier which, when applied to the rated horsepower, indicates a permissible horsepower loading at rated voltage and frequency.
A measure of the overload capacity built into a motor. A 1.15 SF means the motor can deliver 15% more than the rated horsepower without injurious overheating. A 1.0 SF motor should not be loaded beyond its rated horsepower. Service factors will vary for different horsepower motors and for different speeds. for Gearing - A method for adjusting a reducer's load carrying characteristics to reflect the application's load characteristics. AGMA (American Gear Manufacturers Association) has established standardized service factor information. for Motors - Refers to a motor's ability to handle a load greater than the motor's rated HP on a continuous basis. Most LEESON motors have a continuous duty service factor of 1.15 or higher. This ability of the motor is intended to handle momentary or transient overloads or unusual service conditions and should not be utilized when sizing motors for continuous service.
The number by which the horsepower rating is multiplied to determine the maximum safe load that a motor may be expected to carry continuously.
A key performance indicator for the storeroom measuring the % of times the correct quantity of the correct part is received when requested. Note: If the service factor falls below 95% maintenance people begin to lose confidence in the store room's ability to supply the correct material & parts when needed. Usually result in growth of "unofficial personal stores" at frontline level.
