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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.
|
Typical Technical Properties |
|
Revised 6/01 |
| 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 |
400
65 |
400
68 |
200 min
30 min |
| 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 |
NA
NA |
yes
yes |
NR
NR |
| Oil
viscosity:
40°C [104°F], cSt
100°C [212°F], cSt |
151
19.2 |
151
19.2 |
NR
NR |
| Flash point,
°F[°C] - ASTM 92 |
470[243] |
470[243] |
NR |
| Color |
purple/black |
purple/black |
NR |
| Texture |
smooth |
smooth |
NR |
|
NA: Not applicable |
|
NR: Not required for NLGI GC-LB labeling |
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