Parker LX Mise En Service Et Utilisation page 15

2.4.2 Mechanical installation
The service life of the servomotor bearings depends largely on the care exercised during this operation.
M
 
Fr K 10
R
The belt tension must never exceed the values specified by the manufacturer. Tension can be determined
with a device for measuring the natural belt frequency in deflection.
We cannot be held liable for any drive shaft fatigue ensuing from excessive strain on the shaft.

Where a servomotor is combined with gearbox, the gearbox must ensure the motor is sealed
against lubricant (as is the case with our range of gearboxes). If a IP 65 servomotor is associated
with a gearbox which has its own seal, you must remove the seal on the motorshaft.

If the gearbox is not provided by us, check the gearbox stresses (installation conditions, drive shaft
loads, etc.) are compatible with the servomotor selected.
Check the gearbox calculation and in particular its friction torque.

Ensure that the coupling devices are well balanced without a key,

as the servomotor has been balanced with the whole key (in the case of
servomotors with a key).

Check carefully the drive shaft alignment with that of the driven machine

in order to prevent vibration, irregular movement or too high loads on the shaft.

Avoid any impact on the shaft, mountings or machining on the shaft (holes,
miling, etc.) which could destroy the bearings. If press mounting is the only
solution, the shaft must not turn while mounting.

Use the shaft end thread for fitting pulleys or accessories as in the diagram. They
may rest against the ring located in front of the bearing. Where the front bearing is
sealed by a lip seal that rubs on the rotating part (IP 65 version), it is
recommended to lubricate the seal for extended service life.

To modify the orientation of the terminal box, note the connections before
disconnecting the leads and then proceed to rotate the terminal box in 90° or 180°.

Permissible (axial and radial) loads on the shaft are given in the commercial
documentation.

If the motor is driven by a timing belt, the drive pulley should be located as close
as possible to the flange. The pulley diameter should be such that the radial force
does not exceed the limits given in the catalogue.
The following formula provides a good approximation to the radial force of the
pulley :
Fr = radial force (N)
M = maximum torque during use (Nm)
R = pulley radius (mm)
K = 1.5 with a timing belt
3
K = 2.5 with a V belt
K = 3.5 with a flat belt