ISO VG 150 Industrial Gear Oil | Industrial Gear Oil Technical Hub

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Technical reference for ISO VG 150 industrial gear oil, covering operating conditions, enclosed gear-system applications, viscosity behaviour, and specification requirements.

OPERATING CONTEXT

ISO VG 150 industrial gear oil is commonly used within enclosed gear systems operating under moderate load, relatively higher rotational speed, and controlled operating-temperature conditions. It is widely applied where lubricant circulation, thermal stability, and consistent elastohydrodynamic film formation are required.

Heavy-duty ISO VG 150 industrial gear oils are commonly formulated for enclosed gear drives requiring EP performance, oxidation resistance, corrosion protection, water separation, and antifoam behaviour under continuous-duty operating conditions.

The viscosity grade is defined by ISO 3448 and corresponds to a nominal kinematic viscosity of 150 mm²/s at 40°C.

Further guidance relating to viscosity behaviour and grade-selection methodology is outlined within the Industrial Gear Oil Viscosity Selection technical reference.

TYPICAL EQUIPMENT USE

ISO VG 150 is commonly selected for enclosed industrial gear drives operating under moderate load and higher-speed operating conditions where lower fluid friction and efficient lubricant circulation are required.

High-speed reduction gearboxes
Industrial fan and blower drives
Light-to-medium-duty conveyor systems
Circulating-oil enclosed gear systems
General manufacturing and processing equipment
Pump-drive gear units

VISCOSITY BEHAVIOUR IN SERVICE

The lower operating viscosity of ISO VG 150 supports improved lubricant circulation, reduced churning losses, and lower fluid resistance relative to higher-viscosity industrial gear oils.

Viscosity selection must remain aligned with transmitted load, pitch-line velocity, lubrication-system configuration, and operating temperature. Use of insufficient viscosity may reduce lubricant-film thickness and increase the risk of micropitting, scuffing, and surface-fatigue progression.

Additional technical guidance relating to surface-fatigue behaviour is provided within the Micropitting and Surface Fatigue in Gear Systems reference.

SPECIFICATION REQUIREMENTS

ISO VG 150 industrial gear oils are commonly formulated to meet recognised enclosed gear-lubrication standards and OEM gearbox requirements.

DIN 51517 Part 3 CLP
ISO 12925-1 CKD
AGMA 9005
FZG load-stage performance requirements

Specification requirements commonly address load-carrying capability, oxidation stability, corrosion protection, demulsibility performance, foaming resistance, and micropitting performance.

Additional specification guidance is outlined within the Industrial Gear Oil Specifications and Standards technical reference.

OPERATING ENVIRONMENT CONSIDERATIONS

ISO VG 150 gear oils are frequently used within enclosed industrial systems operating continuously under controlled environmental conditions. Lubricant cleanliness, filtration performance, moisture control, and operating-temperature stability remain important reliability considerations.

Industrial gearbox reliability may be influenced by contamination ingress, oxidation progression, and lubricant degradation during extended-service operation.

Further contamination-management guidance is provided within the Industrial Gear Oil Contamination Control reference.

COMPATIBILITY AND GRADE CONTROL

ISO VG 150 should only be substituted with alternative viscosity grades where permitted by the gearbox manufacturer or equipment specification. Changing viscosity grade may alter lubricant-film behaviour, operating temperature, circulation characteristics, and load-carrying performance.

When changing lubricant supplier or specification framework, compatibility with residual lubricant, seal materials, filtration systems, and operating conditions should be confirmed.

Additional guidance relating to EP additive systems and load-carrying performance is available within the EP Additives in Industrial Gear Oils technical reference.

PRODUCT AVAILABILITY

Sinopec Online supplies ISO VG 150 industrial gear oils formulated for enclosed industrial gear systems operating under moderate-load and continuous-duty conditions.

Available viscosity grades and package sizes can be reviewed through the Industrial Gear Oils collection.

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Last reviewed: 1 April 2026
Prepared by the Sinopec Online Technical Team.