I would like to know the shaft dimensions of 1FL6034-2AF21-1AA1 motor.

https://support.industry.siemens.com/cs/ww/en/view/109748475

On motor plate description says it has the shaft is 30mm long 1FL6034, the number 03 means 30mm. But then, on page 76 the drawings.

Shaft height 30mm:

- dimension is indicating 31mm 

- option with feather key 26mm

But you can't compare both dimensions, since the dimension arrows are not showing the same.

So what is the length of this shaft, with key. Measure of interest is the same as the shaft without key (31mm)?  

Hello Marko,

Dimensions of overall length is same for key or plain shaft.

You may access drawings of both type at Drives Technology Configurator.

https://mall.industry.siemens.com/mall/en/us/Catalog/StartConfigurator?configId=10&nodeId=10028832&kmat=DT_M&bookmark

AutoGen_3098867

Marko Bursic

On motor plate description says it has the shaft is 30mm long 1FL6034, the number 03 means 30mm. But then, on page 76 the drawings.

Shaft height 30mm:

So what is the length of this shaft, with key. Measure of interest is the same as the shaft without key (31mm)?  

Servo motor frame size specified is its shafts center height from the mounting surface. In your case, it is specified 1FL6034 = 03 = 30 mm. It is size of shaft center height  from the mounting face ( half of square size specified as 60)

Length of shaft from flange mounting face = 31 mm.

HTH.

Thank you, both.

That's a pita, because a small planetary reducer, right for my needs, accepts max. 30mm shaft length. the shaft is just 1mm too long. I wonder why they had to make it 31mm and not 30. 

:)) Jeff

I admit, that was passing through my brains, too.