8
Technical data
Lubricants
Assembly and Operating Instructions – Explosion-Proof Gear Units
179
Limitations of use
of oil seals with the specific lubricant are described in the following
table:
Material class
Manufacturer
Material
S
1
NBR
1
Freudenberg
72 NBR 902
2
Trelleborg
4NV11
2
FKM
1
Freudenberg
1
75 FKM 585
2
75 FKM 170055
2
Trelleborg
1
VCBVR
Examples:
S11
: Only the elastomer 72NBR902 of the Freudenberg company meets the require-
ments of the approval in conjunction with the specific lubricant.
S2
: Only the elastomer FKM meets the requirements of the approval in conjunction
with the specific lubricant.
Key
The following table shows the abbreviations and icons used in the lubricant table and
explains what they mean:
Abbrevi-
ation/icon
Meaning
Synthetic lubricant (marked gray)
Mineral lubricants
CLP
Mineral oil
CLP PG
Polyglycol (PG)
CLP HC
Synthetic hydrocarbons – polyalphaolefin (PAO)
E
Ester-based oil
Lubricant for the food processing industry – NSF-H1-compliant
Oil
Oil
Easily biodegradable oil for environmentally sensitive areas
Lubricant suitable for ATEX environment.
1)
Helical-worm gear units with CLP-PG: Contact SEW‑EURODRIVE
2)
Special lubricant for SPIROPLAN
®
gear units only
3)
SEW f
B
≥ 1.2 required
4)
Observe the critical starting behavior at low temperatures
7)
With appropriate measures, the gear units can be operated at ambient
temperatures as low as -40 °C. Contact SEW‑EURODRIVE.
Oil seal
Oil seal
PSS
Oil seal type Premium Sine Seal (PSS). The addendum "PSS" at the
lubricant type signals compatibility with the sealing system.
24804134/EN – 05/2018
