User’s Manual for Advanced Axial Flux Synchronous Motors and Generators
www.emrax.com Version 4.5 / January 2017 48
To check if the bearing is suitable for forces applied on the shaft you can use publicly available FAG bearing calculator:
http://medias.ina.de/medias/en!hp.ec/1_R*0*C
1. First, enter the type of the bearing in the box on the right side (e.g. 6206).
2. New window opens with the search results. Choose the product (e.g. 6206-2z, which means that it is closed from the
front and back side).
3. Now you can choose the Calculation tab.
4. Double click on Loadcase 1 on the right side of the window.
5. In the window that opens enter the magnitude of axial force (F
a
), magnitude of radial force (F
r
), rotation speed and
operating temperature. Click on the calculator icon in the top row (5
th
icon from the left). Under the picture of bearing
you will see the rating life in hours.
Life expectancy of the EMRAX motor is the same as life expectancy of the bearings that are mounted in the motor. If the
bearings are overloaded than the bearing life time is shorter. They can be replaced.
In case of doubt, the circumstances of operation shall be discussed with the manufacturer of the bearings or the EMRAX
Company. If the radial or axial load is higher than the bearings can bear, then the system must have an additional shaft with
stronger bearings (belt transmission, chain transmission, gear transmission, direct drive applications). The EMRAX Company can
insert some customized bearings’ combinations (e.g. with tapered rolling bearings with additional sealing rings). This has to be
discussed by the EMRAX Company in advance.
A static redundant dimensioning caused by the thrust bearing must be avoided in any case. Certain resilience in the mount of
the drive or the thrust bearing is satisfactory. Required is a clean rotation of the extension shaft. The shaft must be able to rotate
smoothly and easily by hand after mounting.
Tapered bearings must be lubricated according to the bearings lubrication instructions from the bearing producer.
Bearings are mounted in the motor during assembly. They can be replaced only at the EMRAX Company. Any opening and/or
bearing replacement not done by the EMRAX Company causes a void of warranty! Also opening an EMRAX motor can cause
health damage. Therefore please avoid opening the motor.
To Next Page
Loading...
