Flowserve L Worthington Simpson - Manual (Page 18)

L and U USER INSTRUCTIONS ENGLISH 85392721 07-12
Page 18 of 36 flowserve.com
5.2 Pump lubricants
5.2.1 Recommended oil lubricants
* Note that it normally takes 2 hours for bearing temperature to stabilize and the final temperature will depend on the ambient, r/min, pumpage
temperature and pump size. Also some oils have a very low pour point and good viscosity index which extend the minimum temperature
capability of the oil. Always check the grade capability where the ambient is less than -5 ºC (23 ºF).
** If preheated pure oil mist lubrication LCS LSO 68 or LSO 100 synthetic oils are permitted.
† Use LSC for oil mist. Oil parameters provide flash point > 166 ºC (331 ºF), density >0.87@15 ºC (59 ºF), pour point of -10 ºC (14 ºF) or lower.
5.2.2 Recommended grease lubricants
Grease grade NLGI 3** NLGI 2*
Temperature
range
-20 to 100 ºC
(-4 to 212 ºF) -20 to 100 ºC
(-4 to 212 ºF)
Designation
acc. to DIN
KP3K-20
KP2K-25
BP Energrease LS-EP3 Energrease LS-EP2
Elf Multis EP3 Multis EP2
Fuchs RENOLIT EP3 RENOLIT EP2
Esso Beacon EP3 Beacon EP2
Mobil Mobilux EP3 Mobilux EP2
Q8 Rembrandt EP3 Rembrandt EP2
Shell Alvania EP2 Alvania EP2
Texaco Multifak EP3 Multifak EP2
SKF LGEP 2
* NLGI 2 is an alternative grease and is not to be mixed with other grades
** Standard pre-packed grease for fitted antifriction bearings. NLGI 3
greases are preferred for pumps with vertically mounted shaft.
5.2.3 Lubrication schedule
5.2.3.1
Oil lubricated bearings
Normal oil change intervals are 4 000 operating hours
or at least every 6 months. For pumps on hot service
or in severely damp or corrosive atmosphere, the oil
will require changing more frequently. Lubricant and
bearing temperature analysis can be useful in
optimizing lubricant change intervals.
The lubricating oil should be a high quality mineral oil
having foam inhibitors. Synthetic oils may also be
used if checks show that the rubber oil seals will not be
adversely affected.
The bearing outer ring temperature may be allowed to
rise to 50 ºC (90 ºF).above ambient, but should not
exceed 93 ºC (200 ºF). If the oil temperature is
monitored then it shall not exceed 82 °C (180 °F). A
continuously rising temperature, or an abrupt rise,
indicates a fault.
5.2.3.2
Grease lubricated bearings
When grease nipples are fitted, one charge between
grease changes is advisable for most operating
conditions, ie 2 000 hours interval.
Normal intervals between grease changes are 4 000
hours or at least every 6 months.
The characteristics of the installation and severity of
service will determine the frequency of lubrication.
Lubricant and bearing temperature analysis can be
useful in optimising lubricant change intervals.
The bearing temperature may be allowed to rise to
55
°
C (99
°
F) above ambient but should not exceed
95
°
C (204
°
F). For most operating conditions a quality
grease having a lithium soap base and NLGI
consistency of No 2 or No 3 is recommended. The
drop point should exceed 175
°
C (350
°
F).
Never mix greases containing different
bases, thickeners or additives.
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Oil Splash / force feed / purge and pure**oil mist lubrication
Viscosity cSt @ 40 ºC 32 46 68
Oil temperature range *
-5 to 65 ºC
(23 to 149 ºF)
-5 to 78 ºC
(23 to 172 ºF)
-5 to 80 ºC
(23 to 176 ºF)
Designation to ISO 3448
and DIN51524 part 2
ISO VG 32
32 HLP
ISO VG 46
46 HLP
ISO VG 68
68 HLP
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BP Castrol † Energol HLP-HM 32 Energol HLP-HM 46 Energol HLP-HM 68
ESSO † NUTO HP 32 NUTO HP 46 NUTO HP 68
ELF/Total †
ELFOLNA DS 32
Azolla ZS 32
ELFOLNA DS 46
Azolla ZS 46
ELFOLNA DS 68
Azolla ZS 68
LSC (for oil mist) LSO 32 (Synthetic oil) LSO 46 (Synthetic oil) LSO 68 (Synthetic oil)
ExxonMobil † Mobil DTE 24 Mobil DTE 25 Mobil DTE 26
Q8 † Q8 Haydn 32 Q8 Haydn 46 Q8 Haydn 68
Shell † Shell Tellus 32 Shell Tellus 46 Shell Tellus 68
Chevron Texaco † Rando HD 32 Rando HD 46 Rando HD 68
Wintershall (BASF Group) † Wiolan HS32 Wiolan HS46 Wiolan HS68
Fuchs † Renolin CL 32 Renolin CL 46 Renolin CL 68