Selecting Gear Drive Reducers

[bananabrownin]

When searching through a catalog for gear drive reducers, I find that many of them list nominal output torque and nominal input speed. My question is what does the term 'nominal' in that context mean.

If it lists nominal output torque of 3186in.lb, and nominal input speed of 2900rpm, does that mean it will only output 3186in.lb with a 2900rpm motor attached? What if a 1hp 1750rpm motor was attached to that gear drive reducer?


Thanks

 

[Mech_Engineer]

If it lists nominal output torque of 3186in.lb, and nominal input speed of 2900rpm, does that mean it will only output 3186in.lb with a 2900rpm motor attached? What if a 1hp 1750rpm motor was attached to that gear drive reducer?

They are probably referring to the maximum allowed torque on the gearbox before it breaks, and the maximum (or possibly "recommended") rpm rating of the motor attached to it. So you can't use a motor that goes faster than 2900rpm, and the motors maximum developed torque cannot be higher than (3186 in-lb) / N where N is the gear reduction of the gearbox. So if the gearbox was 1000:1 for example, the motor could not develop more than 3.186 in-lb without damaging the gearbox.

 

[oswaler]

for your question. In the context of gear drive reducers, the term "nominal" typically refers to the approximate or expected value of a certain parameter. This means that the output torque of 3186in.lb and input speed of 2900rpm can be considered as the expected or standard values for that particular gear drive reducer.

To answer your second question, if a 1hp 1750rpm motor was attached to the gear drive reducer with the aforementioned nominal values, it is possible that the output torque and input speed may vary from the nominal values. This is because the performance of the gear drive reducer can be affected by various factors such as the type and condition of the motor, the load on the reducer, and any external factors that may impact its operation.

It is important to note that the nominal values are provided as a guideline and may not always be achieved in practical applications. It is recommended to consult the manufacturer's specifications and guidelines for more accurate and detailed information on the performance of the gear drive reducer with different motor and load combinations. Additionally, it is also important to consider the safety factors and operating conditions to ensure the gear drive reducer can handle the intended load and operate efficiently.