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101

11 Drive Dimensioning

11.4 Lenze gearbox selection

338

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23

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11.4.4 M-n characteristic

The characteristic shows the required speed and torque at the output end of the gearbox and the

corresponding limit values:

[11-13] Gearbox: M-n characteristic (output)

Description

 Max. permissible torque

• This torque must not be exceeded in any case, even for a short time. The service life here is only < 10

load

cycles.

 Permissible torque at alternating load

• The permissible torque depends on the alternating load of the entered load.

Alternating load and repeated load cycle with regard to toothed gearboxes

( 334)

 Equivalent torque

• The equivalent torque presents an equivalent variable for sporadically occurring processes with respect

to the strength of the gearbox. This variable is subordinate for cyclic processes.

 Continuous rated curve

• Characteristic curve for the speed which the gearbox can transmit continuously (in the case of a defined

torque) without overheating.

• The continuous characteristic is affected by the ambient conditions, the mounting position and the av-

erage daily operating time. The definition of the continuous characteristic corresponds to the operating

mode S1 and is based on the IEC 60034-1.

 Requirement of the application

• The range of the entire characteristic has to be within 2 × M

per,out

which is defined from the static

strength and the short-time permissible max. speed.

• Torques above the continuous torque M

per,out

are only permissible sporadically and not for continuous

cyclic operation.

 Performance features

• The performance features can also be found in the selection table.

Selection table

( 341)

1 2 ... 333 334 335 336 337 338 339 340 341 342 343 ... 495 496

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