AMSOIL Synthetic Heavy-Duty Grease (GHB)

Synthetic GH Series Heavy-Duty EP Grease NLGI #1, GC/LB

Extreme-pressure, moly-fortified. Provides outstanding protection for four wheel drive steering knuckles, spring shackles, heavy equipment pivot joints and other components operating in high-load, low-speed conditions. NLGI #1 is preferred for cold temperatures and auto pumping systems. Offers excellent water washout resistance.

AMSOIL GH Series Heavy Duty EP grease is composed of synthetic base oils and lithium-complex thickeners that provides 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 and good low temperature torque values and pumping capabilities. AMSOIL Heavy Duty EP Grease is 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.

AMSOIL Heavy Duty EP Grease is formulated with a top performing lithium complex thickener system that provides excellent water resistance as identified by the ASTM D-1264 water washout test. AMSOIL Heavy Duty EP Grease adheres to metal and is shear stable during severe mechanical activity, maintaining consistency and providing superior lubrication protection.

Performance Features

• Moly Fortified for added EP protection
• Adhesive and Shear Stable - prevents squeeze out
• High dropping point (exceeds 500°F)
• Excellent water-washout resistance
• Oxidation and corrosion inhibited

Application Recommendation

AMSOIL Heavy Duty EP Grease in grade #1 is 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).

The correct consistency grade of AMSOIL Heavy Duty EP Grease is 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, 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 Heavy Duty EP Greases are suitable for use up to 325° F. When operating at elevated temperatures, frequent regreasing may be required.

AMSOIL Heavy Duty EP 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 AMSOIL Heavy Duty EP 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 GH Series Greases are available in 14-oz. cartridges, 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
AMSOIL Synthetic Heavy-Duty Grease, NLGI #1, GC/LB (GHB)
	AMSOIL GHD	NLGI GC/LB
Thickener	Lithium Complex	NR*
Fortified with Moly Compound	yes	NR
NLGI Consistency Grade	1	NR
NLGI Performance Grade	GC-LB	NR*
Penetration (ASTM D-217) 25° C [77° F], 0.1 mm Worked 60 strokes	310-340	220-340
Dropping Point (ASTM D-566) °C [77° F]	500[260]	428[220] min
High Temperature Life (ASTM D-3527) hours	112	80 min
Oxidation stability, psi - ASTM D 942 (100 hr/300 hr)	0/5 max	NR
Water Washout (ASTM D-1264) 79° C [175° F] % loss	9.2	15 max
Rust Protection (ASTM D-1743)	Pass	Pass
Oil Separation (ASTM D-1742) 24 hr. @ 25° C [77° F], % loss	3.3	6.0 max
Leakage (ASTM D-4290), G*	<6.0	10 max
Four Ball Wear Test (ASTM D-2266) Wear Scar Diameter, mm	0.40	0.60 max
Fretting Wear (ASTM D-4170)* mg	3.5	10 max
Four ball EP, kgf - ASTM D 2596 Weld point Load wear index	400 65	200 min 30 min
Timken OK Load Test (ASTM D-2509), lbs.	70	NR*
Low Temperature Torque (ASTM D-4693) n-m, max @ -40° C [-40° F]	0.5	15.5
LT-37 pumpability, g/min (60°F/0°F [16°C/-18°C])	750/26	NR
Copper corrosion - ASTM D 4048	1B	NR
Disc brake wheel bearing specifications Ford ESA-M1C 198A Chrysler MS-3701	NA NA	NR NR
Oil viscosity: 40°C [104°F], cSt 100°C [212°F], cSt	130 16.5	NR NR
Flash point, °F[°C] - ASTM 92	450[232]	NR
Color	purple/black	NR
Texture	smooth	NR
NA: Not applicable
NR: Not required for NLGI GC-LB labeling