Flowserve SMB Series Electric Actuators - Manual (Page 38)

SMB Series/SB Series Installation and Maintenance FCD LMENIM1401-04-AQ – 01/15
38
6.3.3 Minimum Lubricant Qualities Required
a CAUTION: Do not mix lubricants of a different chemical base. Mixing lubricant bases may cause
lubricant properties to be ineffective.
a CAUTION: Do not add a different lubricant to an actuator unless it consists of the same soap base
as the existing lubricant unless you have received lubricant manufacturer approval.
The standard lubricants used by Limitorque have been proven to be extremely reliable over the
years of service. Other lubricants may be used in place of the standard. Limitorque does require the
following lubricant qualities as a minimum.
The lubricant must:
• contain an “EP”additive.
• be suitable for the temperature range intended.
• be water and heat-resistant and non-separating.
• not create more than 8% swell in Buna N or Viton.
• not contain any grit, abrasive, or fillers.
• comply with Slump-prefer NLGI grades 00 to 1.
• not be corrosive to steel gears, ball or roller bearings, or yellow metals (bronze, brass,
or copper alloys).
• have a dropping point above 316°F (158°C) for temperature ranges of -20°F (-29°C)
to 150°F (66°C).