CASTROL Molub-Alloy OG 936 WT 680

Description

Castrol Molub-Alloy™OG 936 WT 680 (previously called Molub-Alloy™ 936 WT 680) is a uniquely compounded open

gear lubricant specifically formulated for extreme cold operating conditions and for use on heavy duty equipment in

mining and industrial service. Molub-Alloy OG 936 WT 680 is compounded to give maximum protection to gears and

slides on large draglines and shovels while minimizing potential pollutants to the environment. A highly refined, viscous,

paraffinic petroleum derivative is the foundation of a blended base fluid with excellent natural chemical and thermal

stability. A proprietary blend of Castrol Molub-Alloy lubricating solids is included to promote antiwear and load carrying

properties beyond those of conventional lubricants. The select lubricating solids work synergistically with chemical

antiwear and extreme pressure (EP) additives to reduce contact temperatures while providing excellent antiweld

protection under extreme pressure and shock loading. Rust and oxidation inhibitors are included in the formulation to

protect the equipment and the lubricating film against the elements in severe climate.

Application

Mining applications include all types of open gears, rails and rollers, racks and pinions, dipper sticks and other slides

on shovels and draglines. It is certified to Bucyrus International SD 4713 open gear specification. 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 minimise initial pitting which could lead to

progressive and destructive pitting later. Molub-Alloy OG 936 WT 680 may be applied either manually or by heavy duty

automatic systems and can be pumped down to temperatures of -44°C/-47°F.

Advantages

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-out’ and

clings tenaciously even to gear teeth in vertical orientation

Good pumpability – pumpable in heavy automatic lubricating systems.

Additional Information

In order to minimize potential incompatibilities when converting to a new grease, all previous lubricant should be

removed as much as possible prior to operation. During initial operation, relubrication intervals should be monitored

closely to ensure all previous lubricant is purged.