Degree Of Protection; Bearing Design And Service Life - Siemens SINAMICS S120 Configuration Manual

3.2

Degree of protection

The degree of protection designation in accordance with EN 60034-5 (IEC 60034-5) is
described using the letters "IP" and two digits (e.g. IP64).
Since most coolants used in machine tools and transfer machines are oily, creep-capable,
and/or corrosive, protection against water alone is insufficient. The motors must be protected
by suitable covers.
Attention must be paid to providing suitable sealing of the motor shaft for the selected
degree of protection of the motor.
1PH4 motors have degree of protection IP65. The motors have degree of protection IP55 at
the shaft exit.
3.3

Bearing design and service life

Standard
Duplex bearing on DE (deep-groove ball bearing and roller bearing).
NOTICE
The duplex bearing is not suitable for coupling output.
Bearing versions
Table 3- 5 Bearing versions
Application
Belt drive
Minimum radial force required
•
for high radial forces
•
Coupling output or planetary gear
Reduced radial forces permitted
•
Increased max. speed
Output with no radial force required, e.g.
•
coupling output
1PH4 Induction Motors
Configuration Manual, (APH4S), 08/2008, 6SN1197-0AD64-0BP1
IP = International Protection
1. digit = Protection against the ingress of foreign
bodies
2. digit = Protection against ingress of water
Standard:
Duplex bearing
Option K00, (K02, K03):
Single bearing
Option L37:
Single bearing "Spindle bearing"
Mechanical properties of the motors
Bearing
3.2 Degree of protection
DE NDE
43