Bearing Change Intervals - Siemens SIMOTICS T-1FW3 Configuration Manual

3.10

Bearing change intervals

Bearing lifetime and regreasing interval
The bearings for the complete torque motors are greased for life and designed for operation
at a minimum ambient temperature of - 15 °C.
Note
Bearings without regreasing system
For bearings without regreasing system (SH 150 and SH 200), we recommend that the
bearings are replaced after approx. 20000 operating hours for an ambient temperatures up
to a maximum of 40°C, or after 5 years (after delivery) at the latest.
The bearing lifetime is reduced by 50 % when motors are mounted vertically. This is the
reason that we recommend that a regreasing system is used when motors are mounted
vertically.
Regreasing system (option for 1FW315x and 1FW320x, standard for 1FW328x)
If the 1FW3 is equipped with regreasing system (bevel lubricating nipple) for the DE and
NDE bearings, then the bearing change interval increases according to the table "Bearings
with regreasing system". Comply with the regreasing intervals and ensure that the
temperature does not exceed a maximum of 40 °C.
Table 3- 12 Bearing change interval and regreasing
Bearing change interval with permanent
grease lubrication, horizontal mounting
position
Regreasing
Table 3- 13
1FW315❑ Hollow shaft
1FW315❑ plug-on shaft
1FW315❑ Solid shaft
1FW320❑ Hollow shaft
1FW320❑ plug-on shaft
1FW320❑ Solid shaft
1FW328❑-2 n
shaft
1FW328❑-3 n
1FW328❑-3 n
1FW3 complete torque motors
Configuration Manual, 08/2020, A5E46027705B AA
SH 150
20,000 h at max. 40 °C
ambient temperature
Option +K40
See table "Bearings with
regreasing system"
Bearings with regreasing system (optional for 1FW315❑ and 1FW320❑)
Motor
= 150/250 hollow
N
= 400 hollow shaft
N
= 600 hollow shaft
N
SH 200
20,000 h at max. 40 °C
ambient temperature
Option +K40
See table "Bearings with
regreasing system"
Bearing change interval with re-
greasing [h]
40000
60000
60000
40000
60000
60000
40000
40000
40000
Mechanical properties
3.10 Bearing change intervals
SH 280
---
Regreasing in the
standard
See table "Bearings with
regreasing system"
Regreasing intervals [h]
10000
10000
10000
10000
10000
10000
10000
8000
8000
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