Conditions for selecting gear units based on the service factor
The determined required service factor fB_req must be smaller than or equal to the service factor according to the selection tables.
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or |
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The service factors in square brackets are only taken into account for specific conditions regarding the application and ambient conditions. Else, the value is 1.
fB | Service factor |
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fB_req | Required service factor |
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fB_L | Application service factor based on load classification and switching frequency |
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fB3 | Low temperature service factor, only applies to ambient temperatures of < -30 °C |
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fB1 | Service factor for helical-worm gear units only, based on ambient temperature |
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fB2 | Service factor for helical-worm gear units only, based on cdf |
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Ma | Gearmotor output torque (MMot × iG) | [Ma] = Nm |
Mamax | Maximum permitted output torque | [Mamax] = Nm |
