SIEMOSYN Motors 1FU8 SINAMICS SIMOVERT MASTERDRIVES ...

09.03
© Siemens AG, 2003. All rights reserved
SIEMOSYN Motors, 1FU8 (PFU) – 09.03 Edition
Mechanical Design
3.9 Bearing system
On request, the locating bearing can be provided at the drive end, Code K94, refer
to Fig. 3-9.
DE bearing (locating
bearing)
Fig. 3-9 Locating bearing at DE and floating bearing at NDE
NDE bearing (floating
bearing)
Frame sizes
71 to 160
For increased cantilever forces (e.g. belt drives), reinforced bearings can be used
at the drive end DE, Code K20.
3.9.3 Permanent lubrication
For permanent lubrication, the bearing grease lifetime is harmonized with the bearing
lifetime.
In the basic version, the motors up to and including shaft height 160 have permanent
lubrication.
3.9.4 Re-greasing
For motors which can be re-greased at defined re-greasing intervals, the bearing
lifetime can be extended and/or unfavorable factors such as temperature, mounting
conditions, speed, bearing size and mechanical load can be compensated.
It is possible to re-grease motors, shaft heights 112 to 160. A lubricating nipple is
optionally provided, Code K40.
Table 3-7 Lubrication type
Type of lubrication Frame size Pole number
Permanent lubrication 71 to 160 2 20000 h
Grease lifetime up to KT
40 2)
4 to 8 40000 h
Re-lubrication interval
2) When the temperature is increased by 10 K, the grease lifetime is reduced by half
1FU8/3-45