Mechanical properties
3.10 Bearing change intervals
1FW3 complete torque motors
Configuration Manual, 08/2020, A5E46027705B AA
69
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 am
bient temperatures up
to a maximum of 40°C, or after 5 years (after delivery) at the latest.
fetime 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 m
ounted
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
20,000 h at max. 40 °C
ambient temperature
20,000 h at max. 40 °C
ambient temperature
---
Regreasing Option +K40
See table "Bearings with
regreasing system"
Option +K40
See table "Bearings with
regreasing system"
Regreasing in the
standard
See table "Bearings with
Table 3- 13 Bearings with regreasing system (optional for 1FW315❑ and 1FW320❑)
Bearing change interval with re-
greasing [h]
1FW328❑-2 n
N
= 150/250 hollow
40000 10000
1FW328❑-3 n
N
= 400 hollow shaft
N
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