Table 9-3 Criteria For Selecting Roller Bearing Greases - Siemens SIMOTICS FD 1MH1 Operating Instructions & Installation Instructions

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
Type of base oil
Thickener
Consistency in accordance with
NLGI class
Operating temperature range
Dropping point
Basic oil viscosity
Additives
FE9 test: A/1500/6000
Behavior in the presence of water
Corrosive effect on copper
Corrosion resistance (EMCOR)
Solid matter content, particle sizes >
25 µm
Suitability of bearings
Speed parameter nxdm
SIMOTICS FD 1MH1
Operating Instructions 08/2017
Standard Property, characteristic value
- Mineral oil
- Lithium
DIN 51818
● "3" for vertical and horizontal types of
construction
● "2" alternatively for horizontal type of
construction with reduced lubrication interval
- At least -20° C ... +130° C
DIN ISO 2176 At least +180° C
DIN 51562-1
● Approx. 100 mm²/s at 40 °C
● Approx. 10 mm²/s at 100 °C
-
● Anti-Oxidation (AO), Anti-Wear (AW)
● No solid lubricants
● Alternatively: Extreme-pressure (EP) only after
prior consultation with grease and bearing
manufacturers
DIN 51821-1/-2 F10 ≥50 h at +130 °C
F50 ≥100 h at +130 °C
DIN 51807 0 or 1 at a test temperature of +90° C
DIN 51811 0 or 1 at a test temperature of +120° C
DIN 51802 / 0 - 0
ISO 11007
DIN 51813 <10 mg/kg
- Suitable for the built-in motor bearings, seals and
these speeds
Maintenance
9.1 Inspection and maintenance
Unit
-
-
-
°C
°C
mm²/s
-
H
-
Korr.°
Korr.°
mg/kg
-
mm/min
139