Castrol Molub-Alloy OG 936 SF Heavy Spray Gear Oil

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Castrol Performance Lubricants SKU: 800158F0C

Size: 400ml Aerosol
Sale price£7.26Inc VAT Regular price£13.88Inc VAT
In stock Order before 3pm for same day dispatch


Castrol Molub-Alloy 936 SF Super Heavy is a uniquely compounded solvent free open gear lubricant developed specifically for use on heavy duty equipment in mining and industrial services. It is compounded to give maximum protection for industrial gears and slides on large draglines and shovels while minimizing potential pollutants to the environment. A highly refined, viscous, paraffinic petroleum derivative, with excellent natural chemical and thermal stability, is the foundation of a blended base fluid .

A proprietary blend of Molub-AIIoy lubricating solids is included to promote anti-wear and load carrying properties beyond those of conventional lubricants. The select 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.


Molub-Alloy 936 SF Super Heavy is suitable for use on all types of open gears, rails and rollers, racks and pinions, dipper slicks and other slides on shovels and draglines. It is certified to Bucyrus International SD 4713 specification for open gear lubricants including electrical hoist drum gear application.

The structural integrity and strength of the lubricating film is particularly valuable in the critical process of running-in 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 minimize initial pitting which could lead to progressive and destructive pitting later.

Molub-AIIoy 936 SF Super Heavy may be applied either manually or by heavy duty automatic systems.


  • Forms a tough durable film with cushioning effect even under extreme pressures and at very slow speeds, the semi-dry working film resists erosion from rain or sleet, resists peeling in dusty environments, and resists film destruction by contaminating oils and greases migrating from nearby mechanisms
  • Excellent rust and oxidation resistance protects the equipment and the lubricating film against the elements in severe climates
  • Unique compounding technology flows readily in the film-forming process yet it resists squeeze and clings tenaciously, even to gear teeth in vertical orientation
  • Good pumpability and set-back resistance pumpable in heavy automatic lubricating systems and does not heavy up over time
  • Formulated to address environmental concerns it is free of solvents, lead, antimony and barium
Size 400ml Aerosol
MPN 158F0C
Product Type Spray Lubricants
Brand Castrol


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