Gearbox safety factor - Don‘t Skip This
The service factor accounts for load type and operating hours
Firstly, clarify the classification of core operating conditions
Ordinary light load intermittent working condition: Select 1.0~1.2, suitable for scenarios with daily operating hours<8 hours and stable load
General heavy-duty continuous working conditions: choose 1.5~2.0, suitable for heavy-duty conveyors that run for ≥ 16 hours per day and have stable loads
Medium impact condition: Select 2.0~2.5, suitable for mixing and conveying equipment with intermittent instantaneous impact
Strong impact composite working condition: Select 2.5~3.0, suitable for equipment such as mine crushers and vibrating screens with peak loads exceeding 1.5 times the rated value
2. Special scenario correction rules
Frequent forward and reverse rotation/starting and stopping more than 20 times per hour: increase by 0.2~0.3 on the basic value
Supporting variable frequency motor: Increase the basic value by 0.1~0.2 to offset the impact of variable frequency torque fluctuations
If the ambient temperature exceeds 40 ℃, increase the basic value by 0.1~0.2 to compensate for the loss caused by the decrease in heat dissipation efficiency
High reliability requirement (failure rate ≤ 1/10000): The gear bending fatigue safety factor needs to reach 1.5~1.6
3. Key verification points
The final requirement is to ensure that the allowable torque of the reducer is ≥ actual working torque × torque safety factor. At the same time, referring to the recommended values of the corresponding brand manufacturer's samples, the hard tooth surface reinforced reducer can appropriately reduce the safety factor by 0.1~0.2 to avoid space and cost waste caused by selecting too large specifications.
