Siemens SIMOTICS FD 1LL1 Operating Instructions Manual page 26

Description
Automatic regreasing system (option)
The roller bearings are optionally equipped with an automatic regreasing system. The roller
bearings are supplied with new grease portions by the regreasing system in parameterized
time intervals.
Rolling-contact bearing design for "Increased degree of protection" (option)
Improved sealing of the bearing units to prevent dust and water from getting in can be achieved
by positioning a grease chamber ahead of the actual bearing unit. Although the same grease
is used in both cases for reasons of convenience, a distinction is made here between
"lubricating grease" and "sealing grease" because of their different functions.
Layout
The spent lubricating grease collects in the space between the bearing housing and the outer
bearing cap. The latter also forms the sealing grease chamber with the labyrinth sealing ring
(optional). The second lubricating nipple containing the grease duct for pressing in the sealing
grease is also located in the outer bearing cap. The chamber is sealed off from the space
where the lubricating grease collects by a V-ring or a V-ring and felt ring combination which
prevents the sealing grease in the chamber from penetrating into the lubricating grease
collecting space. During operation, the sealing grease in the chamber slowly runs out via the
labyrinth and seals it, additionally removing dust from inside and around the outside of the
labyrinth ring.
Terminal box
Depending on the machine design, the following terminal boxes are generally used for
connecting the cables:
Terminal box
GT640
1XB1621
1XB1631
1XB7730
1XB7731
1XB7740
Depending on the terminal box and version, it is possible to rotate the terminal box through
±90° in accordance with the connection direction. The implementation on the other motor side
is possible only with the support of the Service Center. If you wish to retrofit using a different
terminal box at a later date, please contact the Service Center (Page 155).
See also
Rotating the terminal box (Page 70)
Terminal box (Page 65)
26
Comment
Only for machines on the
power supply
2 × 1XB1631
2 × 1XB7740
Application
Not for explosion-proof versions
Not for IEC explosion-proof versions
Not for IEC explosion-proof versions
Not for IEC explosion-proof versions
Operating Instructions 04/2016
SIMOTICS FD 1LL1