
Industrial gear oil additives
Today's industrial gear driven equipment is designed to perform in many applications, often having to withstand harsh environments. Typically, gear boxes are becoming smaller and are being made from lighter and more sophisticated materials, yet they must be more durable than ever before. As a result, greater demands are being placed upon the gear oil lubricant and greater consideration must be given to the use of high-performance base fluids and additives.
We have an extensive synthetic base oil offering based on polyalkylene glycol (PAG) and ester technologies, branded under the Emkarox™ and Priolube™ trade names. These products are designed to allow gears to operate at maximum performance levels.

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View our additives for industrial gear oilsThe importance of gear lubrication
There are many technical and performance demands placed on lubricants for gears and it is critical that the correct oil is selected for use in the gear system for maximum operating efficiency and reliability.
Properties inherent to the oil such as biodegradability and renewability may be required where there are environmental considerations, moreover incidental food contact approval may be sought for certain applications.
In gearboxes themselves the gear lubricant is expected to prevent wear and micro-pitting, perform at high operating temperatures and also on start-up after standstill as well as maintain its integrity and deliver long service life.
We can work with you to help you overcome the technical challenges and deliver solutions for your requirements. We offer both polyalkylene glycol and ester base fluids and are also able to suggest products for use in PAO/ester blends for Flender approval. The table below shows the benefits of each base fluid type.
Polyalkylene glycol (PAG) base fluids | Ester base fluids | PAO/ester formulations |
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Flender (Siemens) approved formulations must meet a strict set of performance criteria. Our Priolube 3970 ester is approved for Flender formulations.
REWITEC™ lubricant concentrates
Whether in engines, gearboxes or bearings - friction and the associated wear is unavoidable in all moving parts. But this wear can be prevented with the application of REWITEC products.
Our patented silicate additive technology increases the service life of heavy duty industrial bearings, gearboxes and engines, reducing downtime and breakdowns. The active particles use the existing lubricant as a carrier and build, through adsorption, a protective and repairing silicon-based coating in gears, bearings and combustion engines in heavy industry applications. We can reduce your operating costs by reducing your need for spare parts and servicing.
Protect your gearboxes, bearings and combustion engines with REWITEC surface technology.
Brochure: Industrial gear oils


Friction modifiers for industrial gear oils
Recommended products
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Priolube™ 3970
Priolube 3970 is a low viscosity, oxidatively stable, low deposit forming polyol ester. It is a high performing lubricant and as it is a polyol ester it therefore has excellent oxidative stability and...
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Priolube™ 1973
Priolube 1973 is an ISO 46, oxidatively stable, biodegradable and hydrolytically stable ester, suitable for use in a wide range of automotive and industrial applications. It is European Ecolabel...

Priolube™ 2500
Priolube 2500 is a biodegradable, synthetic lubricant base fluid and is suitable for use in a wide range of applications. It is European Ecolabel compliant and is featured on the LuSC list.
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Priolube™ 3999
Biodegradable and low volatility polyol ester, suitable for use as a base fluid and an additive, particularly in high temperature and environmentally acceptable applications. Priolube 3999 is an NSF...
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Priolube™ 3987
Priolube 3987 is an ISO 150 oxidatively stable, biodegradable and hydrolytically stable ester, suitable for use in a wide range of automotive and industrial applications. It is also OSPAR Compliant...
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Priolube™ 2087
ISO 320, oxidatively stable, biodegradable and hydrolytically stable complex ester, suitable for use as a base fluid or thickener, particularly in environmentally acceptable lubricants. It is European...

Priolube™ 2088
An ISO 320, oxidatively stable, biodegradable and hydrolytically stable complex ester, suitable as a base fluid or thickener, particularly in environmentally acceptable lubricants.
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Priolube™ 2046
Priolube 2046 is a high viscosity, hydrolytically stable complex ester, suitable for use as a base fluid and a thickener in a wide range of applications.
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Priolube™ 1851
Oxidatively stable, ISO 460 biodegradable complex ester, suitable for use as a base fluid and thickener in a wide range of applications. It is also effective as an additive to improve lubrication...
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Priolube™ 1847
ISO 1000, oxidatively stable, biodegradable and hydrolytically stable complex ester, suitable thickener and additive to improve lubrication performance in many applications. It also features on the...
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Priolube™ 1929
A high-performance synthetic ester lubricant base fluid and additive. Priolube 1929 can be used as a thickener and as a lubricity additive in many applications.
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Priolube™ 3986
A high viscosity complex ester, suitable for use in a wide range of applications, particularly as an Extreme Pressure (EP) enhancing additive, a lubricity additive, a thickening agent and a viscosity...
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Perfad™ 3100
Perfad 3100 is a thermal and oxidatively stable ashless friction modifier suitable for use in the formulation of industrial gear oils. It is European Ecolabel compliant and is featured on the LuSC...

Emkarox™ VG 222
A high performing, water insoluble polyalkylene glycol (PAG) lubricant base fluid, particularly suitable for applications where incidental food contact is a concern.

Emkarox™ VG 380
Emkarox VG 380 is a water insoluble polyalkylene glycol (PAG), suitable for use in a wide range of applications as a base fluid, particularly where incidental food contact may occur.
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Emkarox™ VG 444
Emkarox VG 444 is a water insoluble polyalkylene glycol (PAG), suitable for use in a wide range of applications as a base fluid, particularly where incidental food contact may occur.

Emkarox™ VG 130W
A polyalkylene base fluid (PAG) which is water soluble and an International Standards Organization Viscosity (ISO) grade 150.
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Emkarox™ VG 681W
Emkarox VG 681W is a water soluble polyalkylene glycol (PAG), suitable for use in a wide range of applications as a base fluid and an additive, particularly where food contact may occur.

Emkarox™ VG 1055W
A ISO 1000 water soluble high-performance polyalkylene glycol base fluid for lubricant formulations where inhalation toxicity is of concern.

REWITEC™ DuraGear™ 5/10/20/50/100
A high-performance concentrate suitable for use in all types of gearboxes, including heavy duty, off road, passenger cars and light commercial vehicles, both manual and automatic.
Ester base oils
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