How to avoid motor overload of BLD15-35-11KW cycloidal reducer

The overload problem of the BLD15-35-11KW cycloidal reducer matching motor can be effectively avoided through four core measures: optimizing selection and matching, strengthening operation monitoring, improving protection configuration, and standardizing operation and maintenance. Considering the high power of this model (11kW) and its frequent use in heavy load conditions, special attention should be paid to the load matching between the motor and the reducer, as well as the force balance of the rigid connection structure.
1、 Reasonable selection and matching to prevent overload from the source

Ensure that the power system matches the load requirements
Based on the maximum instantaneous load of the actual working conditions (rather than the average load), it is recommended to reserve 1.5-2 times the redundancy of the motor torque for selection. For example, if the equipment may experience peak torque during startup or sudden operating conditions, motors and reducers should be selected according to this value to avoid "small horses pulling large vehicles".

Optimize speed ratio and output speed configuration
The BLD15-35 model has a low speed ratio (35:1) and is suitable for medium to low speeds and high torque scenarios. It is necessary to confirm whether the output speed meets the load requirements to avoid long-term high load operation of the motor due to speed mismatch.

Prioritize the use of components with strong impact resistance
Choose reducers made of high toughness materials such as carburized quenched gears and self-aligning bearings to enhance overall overload resistance.

2、 Configure multiple overload protection devices to achieve rapid response

Electrical protection: Real time monitoring of current and temperature

Install a thermal relay or electronic thermal protector (PTC) with a set operating value of 1.05-1.2 times the rated current;

When used in conjunction with a frequency converter, enable the overcurrent protection function, set the threshold to 1.2-1.5 times the rated value, and automatically reduce the frequency or stop the machine if it exceeds the limit.

Mechanical protection: buffering impact and cutting off power

Install elastic couplings or torque limiting hydraulic couplings between the motor and reducer to absorb the impact torque during start-up and sudden load changes;

For equipment that is prone to stalling, friction type overload protection couplings can be installed to achieve torque limitation and automatic reset.

Intelligent monitoring system upgrade (recommended)
Introduce an intelligent protection module that integrates multiple parameters such as current, temperature, and vibration to achieve fault warning and data recording, facilitating early intervention.
3、 Standardize operational procedures to reduce human and unexpected risks

Avoid sudden loading or frequent start stop
Operators should gradually increase the load (such as releasing materials in stages), prohibit "sudden start" or instantaneous full load operation, and reduce motor impact.

Enable soft start/soft stop function
When using a frequency converter for control, set a reasonable acceleration and deceleration time (recommended 5-10 seconds) to ensure smooth motor acceleration and reduce the peak starting current.

Emergency response to sudden increase in load

If there is a blockage, immediately turn off the power and manually remove foreign objects;

For critical equipment, it can be gradually unloaded through a PLC control system to avoid secondary damage caused by sudden stops.