Shell Omala S4 WE 320 is an advanced synthetic industrial gear oil based on polyalkylene glycol, engineered for worm drive systems requiring exceptional wear protection, long oil life, and measurable energy efficiency.
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Shell Omala S4 WE 320

Old product name: Shell Tivela S

Shell Omala S4 WE 320 is an advanced synthetic industrial gear oil based on polyalkylene glycol, engineered for worm drive systems requiring exceptional wear protection, long oil life, and measurable energy efficiency.

Category:

Shell Omala S4 WE 320

( Previously named: Shell Tivela S )

Synthetic gear oil optimized for worm gear durability and performance

  • Designed for enclosed industrial worm gear systems under high load and temperature

  • Formulated with polyalkylene glycol (PAG) for thermal stability and long service life

  • Offers high resistance to micro-pitting and wear under shock load conditions

  • Provides energy savings: up to 15% over mineral oils and 11% over synthetic hydrocarbons

  • Formerly known as Shell Tivela S

  • Not recommended for aluminium or aluminium alloy components

  • Incompatible with mineral oils and most synthetic lubricants; requires careful changeover

Global Product Code: 001D7858



Application:

Shell Omala S4 WE 320 is a fully synthetic industrial gear oil designed specifically for enclosed worm gear systems. Based on polyalkylene glycol (PAG) and advanced additives, it is ideal for applications requiring extended oil life, high wear protection, and energy efficiency, even in extreme conditions. Previously marketed as Shell Tivela S.

Performance Features & Benefits:

  • Extended Oil Life: High oxidation and thermal stability enables significantly longer maintenance intervals while minimizing sludge formation.
  • Exceptional Wear Protection: Excellent micro-pitting and shock-load resistance enhances longevity of gear and bearing components.
  • Proven Efficiency: Demonstrated energy savings of up to 15% compared to mineral oils and 11% over synthetic hydrocarbons in worm gear systems.

Main Application Areas:

  • Worm gear reduction systems operating under severe or fluctuating conditions
  • Extended life systems in inaccessible or maintenance-restricted environments (e.g. wind turbine yaw drives)
  • Splash-lubricated bearing systems and other circulating applications
  • Note: Not suitable for aluminium components or use with mineral oils or incompatible synthetics

Specifications & Approvals:

  • DIN 51517-3 (CLP)
  • Approved by Bonfiglioli

Environmental & Safety Information:

  • Use impervious gloves when handling used oil. Avoid skin contact.
  • Dispose of used oil at designated collection points. Do not release into the environment.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
ISO Viscosity Grade 320 ISO 3448
Kinematic Viscosity @ 40 °C 321 mm²/s ISO 3104
Kinematic Viscosity @ 100 °C 52.7 mm²/s ISO 3104
Viscosity Index 230 ISO 2909
Flash Point (COC) 270 °C ISO 2592
Pour Point -39 °C ISO 3016
Density @ 15 °C 1069 kg/m³ ISO 12185
FZG Load Test (A/8.3/90) >12 DIN 51354-2

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