Gear Oil 68

Product Overview

SiNDA Gear Oil 68 is an industrial gear lubricant formulated for enclosed gear systems that require ISO VG 68 viscosity performance under continuous or semi-continuous operation. It is designed to maintain a stable lubricating film between gear tooth surfaces, reducing friction, wear, and heat generation in mechanically loaded systems.

In industrial gearboxes, incorrect viscosity selection is one of the primary causes of premature wear. Gear Oil 68 provides a balance between sufficient film thickness and controlled fluidity, making it suitable for gear systems where loads are moderate and operating temperatures are stable. This balance helps protect gear surfaces while avoiding excessive internal drag that can increase energy consumption.

 

Operational Applications

Gear Oil 68 is intended for use in enclosed industrial gear systems lubricated by splash or circulation methods, including:

• Spur and helical gearboxes
• Bevel gear drives
• Industrial reducers and speed increasers
• Gear-driven conveyor and processing equipment

It is commonly applied in manufacturing plants, processing facilities, and general industrial environments where equipment operates continuously under predictable load conditions.

Within lubricant classification, Gear Oil 68 belongs to the Industrial Gear Oils category and is typically selected when gearbox manufacturers specify ISO VG 68 for standard-duty industrial gear operation.

 

Technical Specifications

This section defines the fundamental technical parameters that determine whether Gear Oil 68 matches the mechanical design, lubrication method, and viscosity requirements specified by the gearbox manufacturer.

• ISO Viscosity Grade: 68
• Base Oil: Mineral-based
• Lubrication Type: Enclosed industrial gear lubrication
• Additive performance: Confirm anti-wear and extreme-pressure properties against the current formulation TDS
• Application Method: Splash or circulating systems

These specifications support reliable lubrication performance in gear systems designed around ISO VG 68 viscosity requirements.

 

Performance Characteristics

Performance characteristics describe how the lubricant behaves under real operating conditions, translating formulation features into measurable protection, stability, and service-life outcomes.

Stable Oil Film Strength

Gear Oil 68 maintains a consistent lubricating film under moderate mechanical load.
Outcome: Reduced metal-to-metal contact and lower surface fatigue on gear teeth.

Wear Protection

Anti-wear additives form a protective boundary layer on contacting surfaces.
Outcome: Slower wear progression during steady-state operation and start-up cycles.

Thermal Stability

The formulation resists viscosity loss caused by sustained operating temperatures.
Outcome: Predictable lubrication performance over extended operating periods.

Oxidation Resistance

Oxidation resistance slows oil degradation in the presence of heat and air.
 Outcome: Supports longer oil service life and helps reduce deposit formation under appropriate operating conditions.

 

Compatibility & Limitations

Confirm compatibility with gearbox metals, seals and any existing lubricant using the current formulation documentation and equipment manual.

Not Recommended When:

• Gear systems operate under extreme shock loads or frequent impact conditions
• Applications involve very high operating temperatures requiring enhanced EP formulations
• Cold-start conditions demand significantly lower viscosity grades

For gear systems exposed to shock loading, impact forces, or high contact stress, an EP gear oil with higher load-carrying capability may be required instead of Gear Oil 68.

Practical guidance: If gear operation involves audible knocking, visible scoring, or vibration caused by impact loading, a higher-performance EP gear oil may be more appropriate.

 

Selection Guidance

Choose Gear Oil 68 when:

• The equipment manufacturer specifies ISO VG 68
• Gearboxes operate under moderate, steady loads
• Continuous operation requires balanced wear protection and efficiency

Do not select this grade if your application involves heavy shock loading, severe vibration, or extreme temperature fluctuations. In these cases, selecting a lubricant with enhanced extreme-pressure characteristics or a different viscosity grade will reduce the risk of accelerated wear and unexpected downtime.

Correct viscosity selection directly affects energy efficiency, component life, and maintenance planning.

 

Compliance & Standards

Request documented performance against the gearbox specification. The following references must be verified for the supplied formulation and are not implied by ISO VG 68 alone:

• DIN 51517-3 (CLP)
• ISO viscosity classification ISO VG 68
• ISO 12925-1 industrial gear oil guidelines

Always verify lubricant selection against OEM gearbox specifications.

 

Industrial FAQ

Is Gear Oil 68 suitable for worm gears?

 It may be suitable for lightly to moderately loaded worm gears if approved by the equipment manufacturer. Heavily loaded worm gears often require specialized formulations.

Can it be used in circulating lubrication systems?

 Yes. Gear Oil 68 is suitable for both splash and circulating systems designed for ISO VG 68 oils.

How does viscosity 68 affect efficiency?

 ISO VG 68 provides sufficient film thickness for protection while minimizing excess drag that can increase power consumption.