Industrial Gear Oils
Shell Omala S2 GX oils are high quality extreme-pressure (EP) oils designed primarily for the lubrication of heavy
duty industrial gearboxes. Their high load carrying capacity, protection against micropitting and compatibility with
seals and paints, combine to offer excellent performance in enclosed gear applications.
Performance, Features & Benefits
Main Applications

Long oil life through oxidation stability and resistance to
thermal stress – leading to reduced total cost of ownership
Shell Omala S2 GX oils are formulated to reduce the risk of
thermal and chemical breakdown throughout the

Enclosed industrial gear systems
maintenance interval. They withstand high thermal loading
and resist the formation of sludge to provide extended oil
life capability, even with bulk oil temperatures of up to
Shell Omala S2 GX technology provides an effective
extreme pressure (EP) formulation designed specifically for
enclosed industrial gearboxes using steel-on-steel, spur,
helical, or planetary gear drives, including highly loaded
systems with splash or forced circulation systems.
1000C.

Excellent wear and micropitting protection
Shell Omala S2 GX oils are also suitable for the lubrication of non-geared applications, that include bearings and other steel-on-steel components with splash or forced circulation
systems.
Shell Omala S2 GX is formulated to have excellent load carrying capacity and micropitting performance, providing
long component life.

Other applications
Gear system efficiency is maintained by optimized water separation performance, corrosion and foam control
Shell Omala S2 GX oils display a combination of excellent water shedding capability, corrosion protection and low
foam forming tendency.
Shell offers a wide range of products for other gear applications that have their own specific requirements
Shell Omala S4 GXV is recommended for gear systems where a synthetic lubricant is specified, when the longest
lifespan is required, or when operating in environments that experience large temperature variations.
Water can greatly accelerate surface fatigue of gears and bearings as well as promoting ferrous corrosion on internal surfaces. Excellent corrosion protection is provided, even in the presence of contamination by seawater and solids.

Shell Omala S5 Wind 320 is recommended for wind turbine
main gear drives.
The oils are designed to minimize the potential for foaming, often experienced in applications where oil reservoir
residence times are marginal.
Shell Omala S4 WE, Shell Morlina S4 B and Shell Omala S1W are recommended for worm-wheel drives.
Excellent shear stability, maintains viscosity stability throughout the service interval.
For automotive gear applications, the appropriate Shell Spirax Oil should be used.
Further system efficiencies are gained through compatibility with popular seals, sealants, and engineering adhesives, to help avoid leakage. Shell Omala S2 GX is compatible with
prevalent paint finishes.
For geared systems, or other applications that employ a filtration unit finer than 5 microns, please consult your Shell Local Technical Advisor and Product Application Specialist before using Shell Omala S2 GX.

Specifications, Approvals & Recommendations

AIST (US Steel) 224 (ISO 100)
Fives Cincinnati: P-76 (ISO 100)
ISO 12925-1 Type CKD (ISO 100)
ISO 12925-1 Type CKC (ISO 100)
DIN 51517- Part 3 CLP (ISO 100)
AGMA EP 9005- F16 (ISO 100)

Shell Omala S2 GX 100 is approved by Siemens AG for use in Flender, helical, bevel, planetary and marine gear units.
For a full listing of equipment approvals and recommendations, please consult your local Shell Technical
Help Desk.