Radial loadexample

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Radialand axialloadon bearing

I see. I understand now. By the way, the customer is using a belt conveyor mechanism, but they don't know how much radial load will be applied. How do I calculate?

I see. As shown in Figure 1, the load applied perpendicular to the output shaft is the radial load, and the load applied in the axial direction to the output shaft is the axial load.

This can be obtained by using the load coefficient from the driving method, the transmitted power at the gearhead output shaft, the service factor, and the effective radius of the pulleys, among other factors.The load factor varies with the driving method, and the service factor varies with the operating pattern.

Radial loadbearing

I think that's a good idea. If the conditions are strict, we also have brushless motor BMU Series and BLE2 Series that have a high strength gearhead so please try to introduce them.

Radial loadvs axialload

Oh, that's true. With this I understand! But what do "K: load coefficient by drive method" and "f: service factor" mean?

That's right...but the catalog shows the term "permissible radial load." How is it different when the word "permissible" is attached?

I see! So that’s why we have to take care of the radial load. I'll look up the motor's permissible radial load in the catalog right away....Huh? Two values are listed for one motor. Is there any difference depending on the "distance from the end of the output shaft"?

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The upper limit of the load that can be applied in the perpendicular direction to the output shaft.The farther away from the bearing, the smaller the load that can be applied.

Radial loadformula

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See Figure 1. The permissible radial load has a different value depending on the point on the axis where the force is applied. The farther away the force is applied from the bearing, the stronger the force to bend the shaft becomes. That's why the permissible radial load becomes smaller the further away from the bearing.

The permissible radial load is the upper limit value of the load that can be applied to the motor shaft. For example, if a radial load of 100 N is applied, the permissible radial load value has to be 100 N min.

Oh, yes. If using a DC power supply, there's also a flange drive adapter that can be mounted on a parallel shaft gearhead to increase the permissible load. Can be used with DC input brushless motors (100 W only).

Even though they are called conveyors, driving methods may be different such as flat belts or chains. It's necessary to take into account about the differences in drive method for radial load. That's the load coefficient depending on the drive method. As for the service factor, it can be driven 24 hours a day in the same direction, or it can be started and stopped frequently. You also have to consider those operation conditions.