Castrol Molub-Alloy™ OG 936 SF Heavy (previously called Molub-Alloy 936 SF Heavy) is an open gear lubricant developed specifically for use on heavy duty equipment in mining and industrial service. Molub-Alloy OG 936 SF Heavy is compounded to give maximum protection to gears and slides on large draglines and shovels while minimising potential pollutants to the environment.
A proprietary blend of Molub-Alloy lubricating solids is included to promote anti-wear and load carrying properties. These lubricating solids work synergistically with chemical anti-wear and Extreme Pressure (EP) additives to reduce contact temperatures while providing excellent anti-weld protection under extreme pressure and shock loading.
The structural integrity and strength of the lubricating film is particularly valuable in the critical process of seating new gears because of the natural occurrence of high spots (asperities) in newly machined surfaces. The lubricating film must separate the mating surfaces sufficiently to cushion the effect of the impact of asperities, and therefore minimise initial pitting which could lead to progressive and destructive pitting later.
A highly refined, viscous, paraffinic petroleum derivative is the foundation of a blended base fluid with excellent natural chemical and thermal stability. Molub-Alloy OG 936 SF Heavy is compounded to flow readily in the film-forming process; yet it resists "squeeze-out" and clings tenaciously even to gear teeth in vertical orientation. Rust and oxidation inhibitors are included in the formulation to protect the equipment and the lubricating film against the elements in severe climates.
A proprietary blend of Molub-Alloy lubricating solids is included to promote anti-wear and load carrying properties. These lubricating solids work synergistically with chemical anti-wear and Extreme Pressure (EP) additives to reduce contact temperatures while providing excellent anti-weld protection under extreme pressure and shock loading.
The structural integrity and strength of the lubricating film is particularly valuable in the critical process of seating new gears because of the natural occurrence of high spots (asperities) in newly machined surfaces. The lubricating film must separate the mating surfaces sufficiently to cushion the effect of the impact of asperities, and therefore minimise initial pitting which could lead to progressive and destructive pitting later.
A highly refined, viscous, paraffinic petroleum derivative is the foundation of a blended base fluid with excellent natural chemical and thermal stability. Molub-Alloy OG 936 SF Heavy is compounded to flow readily in the film-forming process; yet it resists "squeeze-out" and clings tenaciously even to gear teeth in vertical orientation. Rust and oxidation inhibitors are included in the formulation to protect the equipment and the lubricating film against the elements in severe climates.
Unit of Measure
Package Type |
N/A Keg |
Weight |
N/A 120 lb |
Specific Gravity |
N/A 0.950 |
National Lubricating Grease Institute (NLGI) Consistency |
N/A #0 |
Viscosity at 40 Degree Celsius (ºC) |
N/A 2030 cSt |
Viscosity at 100 Degree Celsius (ºC) Temperature |
N/A 47 cSt |
Penetration at 10 Millimeter (mm) and 77 Degree Fahrenheit (ºF) (25 Degree Celsius (ºC)) Temperature (Worked 60 Strokes) |
N/A 345 to 360 |
Brookfield Viscosity at 25 Degree Celsius (ºC), Spindle No. 7, 10 rpm |
N/A 144000 cP |
Four Ball Extreme Pressure (EP) Weld Point Load |
N/A 800 kg |
Four Ball Load Wear Index |
N/A 130 kgf |
Four Ball Wear Scar Diameter |
N/A 0.75 mm |
Copper Corrosion |
N/A 1B |
Pumpability by Lincoln Ventmeter at -7 Degree Celsius (ºC) |
N/A 500 psi |
Rust Test |
N/A Pass |
Lubricating Solids Particle Size |
N/A 15 (Nominal) µm45 (Maximum) µm |
Applications |
N/A
Molub-Alloy OG 936 SF Heavy is suitable for use on all types of open gears, racks and pinions and sliding or skidding applications such as draglines and shovels. It can be applied either manually or by heavy duty automatic systems. This product is used extensively in mining, construction, onshore drilling operations and on offshore installations, facilitating effective lubrication and protection on:
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Features and Benefits |
N/A
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Claims (Meets Requirements) |
N/A Bucyrus SD 4713 Komatsu Open Gear Lubricants |
Additional Information |
N/A Molub-Alloy OG 936 SF Heavy is not intended for general use in bushings and bearings except in slow moving, heavily loaded applications. Please contact your Castrol Technical Services team to discuss new applications of OG 936 SF in bearings. |