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Amsoil Synthetic GH Series Heavy-Duty EP Grease
NLGI #1 and #2 (Lithium Complex -
Moly Fortified)
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Extreme-pressure, moly-fortified. Provides outstanding
protection for four wheel drive steering knuckles, spring
shackles and other components operating in high-load, low-speed
conditions. Product Codes: GHB, GHD
APPLICATIONS OR REQUIREMENTS
- GHB (#1) & GHD (#2) ASTM D-4950 (NLGI) Service GC/LB
- GHB (#1) Cincinnati Milicron P-72 Spec.
- GHD (#2) Cincinnati Milicron P-62 Spec.
- GHD (#2) Mack MG-C
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PRODUCT DESCRIPTION
AMSOIL GH Series Extreme Pressure greases are qualified against
the highest grease standard, NLGI GC (wheel bearing) and LB (chassis),
and are designed for heavy duty applications. These greases are
composed of synthetic base oils and lithium-complex thickeners that
provide the film strength, shear resistance, and mechanical stability
critical to high load protection. This combination excels in high
and low operating temperature ranges by providing excellent oxidation
stability, high temperature dropping points, good low temperature
torque values and good low temperature pumping capabilities. The
GH Greases are compounded with oxidation and corrosion inhibitors,
effective oil soluble EP additives and molybdenum disulfide (moly)
solid EP additives for all around protection in severe conditions.
The presence of moly provides an extra measure of protection in
shock loading situations common in both construction and agricultural
use. During heavy shock loading, the lubricant film between metal
surfaces can be temporarily ruptured, but moly remains intact to
prevent metal to metal contact which could cause equipment damage.
Moly also assists in dirty environments or when proper re-greasing
intervals are not followed.
AMSOIL's top performing lithium complex thickener system provides
excellent water resistance as identified by the ASTM D-1264 water
washout test. Therefore, even in wet conditions a lubricant film
remains present to protect equipment against wear while the corrosion
inhibitors prevent rust. AMSOIL GH greases adhere to metal and are
shear stable during severe mechanical activity. These features mean
the grease does not thin during operation, but rather it maintains
its consistency and stays in place to provide good lubrication.
PERFORMANCE FEATURES
- Moly Fortified for added EP protection
- Adhesive and Shear Stable - prevents squeeze out
- High dropping point (exceeds 500ºF)
- Excellent water-washout resistance
- Oxidation and corrosion inhibited
APPLICATION RECOMMENDATION
AMSOIL GH Greases in grades #1 and #2 are recommended for use in
manual or automatic lubricating systems. NLGI #1 (GHB) greases have
better mobility and are the preferred choice for colder applications,
for automatic lubrication systems with long pumping runs, and for
gear box applications (where recommended by manufacturer). NLGI
#2 (GHD) is the preferred choice for medium to high ambient temperatures,
sleeve type bushings, high shock loading environments, high water
environments, and is the primary choice for wheel bearings.
The correct consistency grade of AMSOIL GH EP Moly Greases are
recommended for use in heavy and light duty applications found in
manufacturing plants, automotive applications, agricultural equipment
and construction equipment. These include, but are not limited to,
roller bearings, plain bearings, gears, bushings, thrust bearings,
wheel bearings, chassis lubrication, universal joints, ball joints,
tie-rod ends, steering knuckles, and heavily loaded pivot pins on
mining and off road equipment such as power shovels, draglines,
wheel and back hoe loaders, excavators and bulldozers. AMSOIL GH
greases are suitable for use up to 325º F. When operating at elevated
temperatures, frequent regreasing may be required.
AMSOIL GH Lithium Complex Greases are compatible with many other
types of grease. However, it is recommended that when changing greases,
the equipment be cleaned of the old grease when possible or flushed
with a liberal amount of the GL grease while the mechanism is in
operation. Closely monitor the system for any inconsistencies. Any
grease compatibility questions should be referred to your AMSOIL
representative or AMSOIL INC.
APPLICATION MAINTENANCE
Maintaining a clean work environment is important when equipment
greasing is performed. Wipe grease fittings clean prior to injecting
grease to prevent contaminant ingestion. Maintain bearing housings
one-third to one-half full of grease. Do not over-grease as excessive
heat buildup can result. Supplement standard grease maintenance
by periodically cleaning and packing housings with fresh grease
on an established maintenance schedule.
AMSOIL PRODUCT AVAILABILITY
AMSOIL GH Series Greases are available in 14-oz. cartridges, 16-oz.
tubs (GHD only), 35-lb. pails, 120-lb. kegs and 400-lb. drums.
AMSOIL Industrial Lubricants are stocked in Superior, Wisconsin
and in select regional distribution centers throughout the United
States and Canada. AMSOIL will stock additional quantities of lubricants
or special order products based on customer requests and regional
demands.
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Typical Technical Properties
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Revised 6/01
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| Synthetic GH Series Grease |
GHB |
GHD |
NLGI GC/LB |
| Thickener |
lithium complex |
lithium complex |
NR |
| Fortified with moly compound |
yes |
yes |
NR |
| NLGI consistency grade |
1 |
2 |
NR |
| NLGI performance grade |
GC-LB |
GC-LB |
NR |
| Penetration - ASTM D 217 (25°C [77°F], 0.1 mm)
worked 60 strokes |
310-340 |
265-295 |
220-340 min |
| Dropping point, °F[°C] - ASTM D2265 |
500[260] |
550[288] |
428[220] min |
| High temperature life, hours - ASTM D 3527 |
140 |
160 |
80 min |
| Oxidation stability, psi - ASTM D 942 (100 hr/300
hr) |
0/5 max |
0/3 max |
NR |
| Water washout, percent - ASTM D 1264 |
6.0 |
1.8 |
15 max |
| Rust and corrosion - ASTM D 1743 |
pass |
pass |
pass |
| Oil separation, percent loss - ASTM D 1742 (24
hours, 25°C [77°F] |
3.3 |
1.1 |
6.0 max |
| Leakage, g lost - ASTM D 4290 |
6.0 |
1.0 |
10 max |
| Four ball wear test, mm scar - ASTM D 2266 |
0.40 |
0.40 |
0.60 max |
| Fretting wear, mg - ASTM D 4170 |
3.5 |
3.4 |
10 max |
| Four ball EP, kgf - ASTM D 2596
Weld point
Load wear index
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400
65
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400
68
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200 min
30 min
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| Timken OK load test, lbs - ASTM D 2509 |
70 |
70 |
NR |
| Low temperature torque, N*m - ASTM D 4693 (-40°C
[-40°F]) |
0.50 |
1.3 |
15.5 max |
| LT-37 pumpability, g/min (60°F/0°F [16°C/-18°C]) |
840/26 |
350/9 |
NR |
| Copper corrosion - ASTM D 4048 |
1B |
1B |
NR |
| Disc brake wheel bearing specifications
Ford ESA-M1C 198A
Chrysler MS-3701
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NA
NA
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yes
yes
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NR
NR
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| Oil viscosity:
40°C [104°F], cSt
100°C [212°F], cSt
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151
19.2
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151
19.2
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NR
NR
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| Flash point, °F[°C] - ASTM 92 |
470[243] |
470[243] |
NR |
| Color |
purple/black |
purple/black |
NR |
| Texture |
smooth |
smooth |
NR |
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| NA: Not applicable |
| NR: Not required for NLGI GC-LB labeling |
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