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Fully synthetic high-performance gear oils


GEARMASTER SYN oils are fully synthetic gear oils based on poly-alpha-olefin, miscible with mineral oil at any ratio. In comparison to mineral based gear oils, GEARMASTER SYN oils have a far better temperature-viscosity behaviour and better ageing stability. This results in a very large application range.

Performance Features

  • high resistance to ageing
  • excellent corrosion protection
  • outstanding cold flow properties
  • very good temperature-viscosity behaviour
  • large temperature range
  • compatible with mineral oil
  • reduces friction and wear
  • improves efficiency

Field of application

GEARMASTER SYN oils are used in gears, circulation systems and bearings subject to very high or largely varying temperatures. Owing to the high performance level much longer oil change intervals can often be achieved leading to a reduction of operation and disposal costs.

Method of application

The nominal viscosity should be lowered by one degree when machines and systems operating with oil sump temperatures above 60 OC are changed over from mineral oil to GEARMASTER SYN oils. The disposal does not differ from mineral oil.


GEARMASTER SYN oils surpass the requirements according to DIN 51 517-3. GEARMASTER SYN 1000 is approved to lubricate bearings of grinding rollers. Approved by Siemens AG Flender-Getriebe, Bocholt (chart T7300) for viscosities 320 – 680.


  • Cement, lime, gypsum
  • Construction
  • Machinery, equipment
  • Mining, quarrying, exploration
  • Other industries
  • Power generation

The information shown on this side is based on the experience and expertise of the FUCHS Group in the development and manufacture of lubricants and represents the current state of the art. The performance of our products can be influenced by a series of factors, especially the specific use, the method of application, the operational environment, component pretreatment, possible external contamination, etc. For this reason, universally valid statements about the function of our products are not possible. Our products must not be used in aircraft/spacecraft or parts thereof. This does not apply if the products can be removed again before the components are fitted in an aircraft/spacecraft. The information given here represents general, non-binding guidelines. No warranty expressed or implied is given concerning the properties of the product or its suitability for any given application. We therefore recommend that you consult a FUCHS Group application engineer to discuss application conditions and the performance criteria of the products before the products are used. It is the responsibility of the user to test the functional suitability of the products and to use them with the corresponding care. Our products are subject to continuous further development. We therefore retain the right to change our product range, the products, and their manufacturing processes as well as all details on this side at any time and without warning, provided that no customer-specific agreements exist that require otherwise.

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