Servomotor series JHN, JHQ, and JL – User Manual
Installation and commissioning
Jetter AG
205
Clutch, timing belts, timing belt pulleys, radial and axial load
8.2.3
DANGER
Danger in potentially explosive atmospheres!
Avoid electrostatic charging!
When using pulleys, unsuitable belts may produce an electrostatic charge
that can cause an explosion.
•
Only use belts that do not cause electrostatic charging.
NOTICE
Avoid damage to the servomotor and maintain its service life!
Improper installation may damage the motor or considerably shorten its
service life.
•
Make sure the clutch is aligned correctly. Please follow the instructions
given by the manufacturer of the clutch.
An offset will produce intolerable vibrations and will damage ball
bearings and clutch.
•
When using timing belts, observe the permissible radial forces F
R
.
Radial loads exceeding the limits will significantly reduce the
service life of motors.
If a belt drive is used, the minimum permitted diameter of the pinion, for
example, is calculated as follows:
d
min
≥ M
o
/F
R
x 2.
•
Avoid axial load of the motor shaft.
Axial load will significantly shorten the service life of the motor.
Cooling plate
8.2.4
All torque data have been determined for motors equipped with cooling plates.
For calculating the dimensions of a cooling plate with a thickness of 3.5 mm, the following formula
has been applied:
Length of cooling plate in mm = 2.5 x flange size in mm
Example for a JL2-0040-… motor:
The motor's flange size of 55 mm results in a cooling plate length of 2.5 x 55 mm = 137.5 mm.
Thus, the dimensions of the cooling plate are 137.5 mm x 137.5 mm x 3.5 mm.
Carrying out the mechanical installation
8.2.5
1. Prior to installing the motor, check it for possible damages in transit or storage.
Please do notify Jetter AG without delay of possibly damaged mechanical equipment,
as well as of corrosion damages to shaft or flange.
If there is a brake, release it first. Try to turn the rotor by hand; it must react easily.
Watch out for unusual scraping noises.
2. At manufacturing, the rotor of the motor is balanced electronically. Before fitting the
power output elements to the end of the shaft, remove the corrosion protection that it
might still be covered with.
