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fB = Rated power of reducer ÷ Motor power reducer rated power of reducer: Under normal operating conditions (condition factor fB total = 1), ensure the service life of reducer (generally 10000 hours), the reducer can be configured The maximum power is the rated power of the reducer. The rated power of the reducer is determined by the weakest part of the reducer. Such as the smallest pinion gear reducer, cycloidal reducer motor shaft or eccentric bearings.
Standard operating conditions (fB total = 1): means that the load is stable, no shock and vibration, the daily work does not exceed 10 hours, the number of starts per hour is less than 10 times, the ambient temperature is about 20°C, the lubrication is good, and the reducer runs through more Condition conditions. At this time, the condition factor fB is always equal to 1.
Condition factor:
According to the nature of work and the environment, the important parameters that the reducer must refer to when using it.
The total condition factor (fB total) includes:
1. Load factor, working time, starting frequency of the operating conditions of the coefficient - also known as the necessary condition factor (fBL). Detailed parameters can be found in the "Machine coefficient table" of the "Medler's product manual";
2. The condition coefficient (fB1) determined by the ambient temperature;
3. The condition factor (fB2) determined by the hourly running time;
fB total = fBL × fB1 × fB2
Product selection conditions:
In order to ensure that the reducer can reach normal service life under different working conditions, the following conditions must be satisfied: The product use factor fB is greater than the condition factor fB of the product used.
Therefore, under normal circumstances, we must make sure that the selected product has a service factor of more than 1.0 under the conditions of its motor power and speed ratio.
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Germany's use of gear reducer and operating conditions factor
Reducer use factor (fB):