CASTROL Molub-Alloy OG 936 SF Heavy
Industrial Greases and Pastes
Molub-Alloy OG 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.
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:
- Rack and pinion jacking mechanisms
- Cantilever skidding systems
- Mooring winch open gearing and slides
- FPSO offloading systems
- Crane slew ring & pinion
- Exposed threads on penstock valves
- Heavy duty top dressing for the ultimate protection of wire ropes
Molub-Alloy OG 936 SF Heavy complies with the Bucyrus International SD 4713 specification (CAT) and Komatsu specifications for Open Gear Lubricants.
Specification:
OGPF 0 G-10 DIN 51502
Typical characteristics:
Consistency grade: NLGI 0
Worked penetration, 60 strokes at 25 °C (77 °F): 345-360
Base oil viscosity at 40 °C (104 °F): 2030 mm2/sec
Base oil viscosity at 100 °C (212 °F): 57 mm2/sec
Four Ball Weld Load test, weld point: 800 kgf
Four Ball Wear test, Wear Scar Diameter, 40 kgf/75°C/1200rpm/1hr: <0.75 mm
Four Ball Weld Load test, Load Wear Index, 27°C/1770rpm: 130
Copper corrosion, 24 hours at 100 °C (212 °F): 1b
Grease Pumpability test, Lincoln Ventmeter, in-house method: 500 psi
Lubricating solids, particle size: nominal: 15 micron / maximum: 45 micron
Molub-Alloy OG 936 SF Heavy was previously called CASTROL Molub-Alloy 936 SF Heavy.
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.
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:
- Rack and pinion jacking mechanisms
- Cantilever skidding systems
- Mooring winch open gearing and slides
- FPSO offloading systems
- Crane slew ring & pinion
- Exposed threads on penstock valves
- Heavy duty top dressing for the ultimate protection of wire ropes
Molub-Alloy OG 936 SF Heavy complies with the Bucyrus International SD 4713 specification (CAT) and Komatsu specifications for Open Gear Lubricants.
Specification:
OGPF 0 G-10 DIN 51502
Typical characteristics:
Consistency grade: NLGI 0
Worked penetration, 60 strokes at 25 °C (77 °F): 345-360
Base oil viscosity at 40 °C (104 °F): 2030 mm2/sec
Base oil viscosity at 100 °C (212 °F): 57 mm2/sec
Four Ball Weld Load test, weld point: 800 kgf
Four Ball Wear test, Wear Scar Diameter, 40 kgf/75°C/1200rpm/1hr: <0.75 mm
Four Ball Weld Load test, Load Wear Index, 27°C/1770rpm: 130
Copper corrosion, 24 hours at 100 °C (212 °F): 1b
Grease Pumpability test, Lincoln Ventmeter, in-house method: 500 psi
Lubricating solids, particle size: nominal: 15 micron / maximum: 45 micron
Molub-Alloy OG 936 SF Heavy was previously called CASTROL Molub-Alloy 936 SF Heavy.