
24 of 44
Document P/N:
2P137414
Release Date:
05/29/2017
Revision: IR
Recommended Power End Lube Oils:
Selecting the proper gear oil for satisfactory power end lubrication is very important to obtaining long life and
trouble-free service from the high performance SPM
®
plunger pump. Weir Oil & Gas highly recommends the
use of one of the modern “synthetic” gear lubricants, which are now available through all major lubricant
marketers. Synthetic lubricants exhibit a much more stable viscosity over a wide range of ambient conditions.
Synthetics also offer a much improved film strength compared to a conventional gear oil of the same viscosity.
The use of synthetic gear lubricants will improve lubricant flow at pump startup, will provide superior wear
protection, and will result in higher “hydraulic horsepower” output due to reduced drag and friction between
mating parts.
NOTE:
TO OBTAIN OPTIMUM PERFORMANCE, REGARDLESS OF THE POWER END LUBRICANT
SELECTED, THE LUBRICANT TARGET OPERATING TEMPERATURE SHALL STAY BELOW 160° F.
General Service Power End Lubricants:
Gear oil must have the following properties:
1. Viscosity rating of ISO 220
2. Rated for extreme pressure (EP) service
3. Viscosity Index of 100 or higher
4. Pour point of 0
0
F (-17.7
0
C) or lower
5. Timken Test rating of 50 lbs. or higher.
Cold Temperature Service Power End Lubricant:
Weir Oil & Gas highly recommends the use of an extreme pressure gear oil for any plunger pump being used in
a cold temperature environment for ambient conditions frequently below 32
0
F (0
0
C). For environments with
extreme temperature shifts between seasons, it is recommended to switch from general service to cold
temperature service oils based on normal ambient temperatures.
Cold temperature service oils must have the following properties:
1. Viscosity rating of ISO 150
2. Rated for extreme pressure (EP) service
3. Viscosity index of 100 or higher
4. “Pour Point” of -20
0
F (-28.8
0
C) or lower
5. Timken Test rating of 50 lbs. or higher
Содержание SPM QWS 2500 XL
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