TNi21
07 April 2016
Page
10/38
3. PRECAUTIONS FOR USE AT A MECHANICAL LEVEL
3.1. Data specific to the motor shaft
3.1.1. Force applied when pushing items on to the shaft
WARNING
MECHANICAL CHARACTERISTICS OF THE MOTOR
Exceeding the maximum permitted force on the shaft will result in rapid
wearing of the bearings, a broken shaft or the deterioration of any
accessories (encoder, brake, etc.)
• Never exceed the max. permissible radial or axial forces on the
motor.
• Protect the shaft against impacts.
• When pushing items in to the shaft, do not exceed the maximum
permitted axial force.
If these precautions are not taken, the result could be death,
serious injury or damage to equipment.
The maximum force when pushing items on to the shaft is limited by the maximum permitted axial force
acting on the ball bearings.
This maximum axial force is given in the motor's data sheet.
Alternatively, the item to be attached can be secured by clamping, bonding or binding.
3.1.2. Radial load on the shaft
Figure 2
The point of application
X
of the radial force
F
depends on the size of the motor.
This information is shown in the motor's data sheet.
The maximum radial and axial loads should not be applied simultaneously, so as to maximise the motor's
service life.
F
X
