Flowserve Mark 3 Sealed Metallic Durco - Manual (Page 37)

MARK 3 USER INSTRUCTIONS ENGLISH 71569102 01-13
Page 37 of 72 flowserve.com
Figure 5.3: Recommended oil lubricants
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Oil Splash / force feed / purge oil mist/ 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
* 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 greater viscosity index than the minimum acceptable of 95 (eg Mobil DTE13M) which
may extend the minimum temperature capability of the oil. Always check the grade capability where the ambient is less than -5 ºC (23 ºF).
† 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.
** Normal compounded oils CANNOT be used with oil mist as anti-foam additives need to be avoided. Most oils recommended for wet
splash lubrication contain foam inhibitors as well as antioxidants and anticorrosion additives, so they are unsuitable for oil mist. Some
synthetic lubricants may attack the Nitrile seals used in a regular bearing housing. The LSC LSO oils are recommended for oil mist
applications. We recommend using Royal Purple SYNFILM in one of the above ISO VG designations if syntetic oil is required for splash
bath lubrication to avoid changing to Viton seals in the bearing housing
Figure 5.4: Recommended grease lubricants
Mineral
oil
Quality mineral oil with rust and oxidation
inhibitors. Mobil DTE heavy/medium (or
equivalent)
Synthetic
Royal Purple or Conoco SYNCON (or equivalent).
Some synthetic lubricants require Viton O-rings.
Grease
Mobile POLYREX EM (or compatible) – horizontal
Polyurea with mineral oil
EXXON Unirex N3 (or compatible) – In-Line
Lithium Complex with mineral oil
Food
grade
Klübersynth UH1 64-62. (NLGI 2)
Low
temp.
Aeroshell 22
Figure 5.5: Oil viscosity grades
Maximum oil
temperature ISO viscosity
grade
Minimum
viscosity index
Up to 60 °C (140 °F) 32 95
Up to 71 °C (160 °F) 46 95
Up to 80 °C (175 °F) 68 95
Up to 94 °C (200 °F) 100 95
Figure 5.6: Max external housing temperature
Lubrication Temperature
Oil bath 82 °C (180 °F)
Oil mist 82 °C (180 °F)
Grease 94 °C (200 °F)
The maximum temperature that the
bearing can be exposed to is 105 °C (220 °F).
Figure 5.7: Lubrication intervals*
Lubricant Under 71 °C
(160 °F) 71-80 °C
(160-175 °F) 80-94 °C
(175-200 °F)
Grease 6 months 3 months 1.5 months
Mineral oil 6 months 3 months 1.5 months
Synthetic oil** 18 months 18 months 18 months
* Assuming good maintenance and operation practices, and no
contamination.
** May be increased to 36 months with ANSI 3A™ power end.
*** Bearing Temperatures up to 16°C (30 °F) higher than housing.
5.2.2 Grease
Regreasable 5.2.2.1
Single shielded regreasable bearings
When the grease lubrication option is specified,
single shielded bearings, grease fittings and vent
pipe plugs are installed inboard and outboard.
The orientation of the bearing shields
is different for horizontal pumps (Standard,
Sealmatic, Unitized, Recessed, and Lo-Flo - see
figure 5.8) and In-Line pumps (see figure 5.9).