Siemens SIMOTICS TN 1LL8, Руководство по эксплуатации и установке

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9.1.6 Servicing the roller bearings
When inspecting rolling-contact bearings, it is generally not necessary to dismantle the
machines. The motor only has to be dismantled if the bearings are to be replaced.
9.1.7 Servicing and maintaining the anti-condensation heating
The anti-condensation heating is maintenance-free. If it is defective, contact the
Service Center (Page 137).
9.1.8 Regreasing intervals and types of grease for operating roller bearings
The specified grease data applies to the data specified on the rating plate and for high-quality
grease in accordance with the specifications in these operating instructions. Because these
greases exceed significantly the requirements according to DIN 51825 and ISO 6743‑9, they
permit the specified relubrication intervals.
Initial lubrication
The grease specified on the lubricant plate is selected according to the operating conditions
known at the time of ordering and should be used for initial lubrication.
Grease selection criteria
High quality ISO‑L‑X BDEA3 lubricating grease according to ISO 6743-9 and K3K‑20
lubricating grease according to DIN 51825 with lithium soap as a thickener and an upper
service temperature of at least +130° C / +266° F are permissible for standard applications
without special requirements.
When selecting the lubricating grease, ensure that the technical data of the grease is suitable
for the application.
The lubricating grease must satisfy the criteria listed in the table below and must match the
operating conditions. If different special lubricating greases are stated on the lubricant plate,
then different criteria apply.
Table 9-3 Criteria for selecting roller bearing greases
Criteria Standard Property, characteristic value Unit
Type of base oil - Mineral oil -
Thickener - Lithium -
Consistency in accordance with
NLGI class
DIN 51818 ● "3" for vertical and horizontal types of
construction
● "2" alternatively for horizontal type of
construction with reduced lubrication interval
-
Operating temperature range - At least -20° C ... +130° C °C
Dropping point DIN ISO 2176 At least +180° C °C
Basic oil viscosity DIN 51562-1
● Approx. 100 mm²/s at 40 °C
● Approx. 10 mm²/s at 100 °C
mm²/s
Maintenance
9.1 Inspection and maintenance
SIMOTICS TN Series N-compact 1LL8
Operating Instructions 11/2018
103