KLUBERSYNTH G 4

Synthetic high-performance gear oil.

Klübersynth G 4 is a synthetic high-performance gear oil based on polyalphaolefin and selected additives.

Klübersynth G 4 shows high scuffing strength. Gears are sufficiently protected against scuffing even at extremely high peak loads, vibrations or oscillations. The good wear protection of the gear components ensures that their calculated service life is achieved, leading to lower maintenance and repair costs.

Klübersynth G 4 offers a much longer service life than mineral oils due to its excellent ageing and oxidation resistance; thus service intervals can be extended and maintenance costs reduced. The product's low foaming tendency and anti-corrosive properties enable problem-free gear operation. Klübersynth G 4 is neutral towards most sealing materials such as NBR or FKM. Oil leakage leading to contamination is prevented. Due to the product's good compatibility with brass, bronze and copper, it may be used for the lubrication of applications where the corrosion of nonferrous metals is an issue.

The good viscosity-temperature behaviour supports the formation of a sufficient lubricant film across a wide service temperature range.

Therefore, a single viscosity grade can cover both low and high temperatures in many applications.

The optimised friction behaviour enabled by the carefully selected base oils reduces power loss and improves gear efficiency.

Klübersynth G 4 is recommended and approved for ITEMA / Somet weaving machines as well as gearboxes from Stäubli and Yilmaz Redüktör.

By using Klübersynth G 4 you can benefit from a number of advantages that will help you save costs easily and efficiently. We look forward to hearing from you.

Klübersynth G 4 was especially developed for the lubrication of spur, bevel and planetary gears. It can also be used for plain and rolling bearings.
Klübersynth G 4 can be used for immersion, immersion circulation and injection lubrication.
The use of drip-feed oilers, brushes, oil cans or suitable automatic lubricating systems is also possible. When using automatic lubricating systems, please note the manufacturer's instructions regarding the maximum permissible viscosity. The low-viscosity varieties are also used for oil mist lubrication.
Klübersynth G 4 is miscible with mineral oils. However, for the
Klübersynth G 4 oil to deliver its full performance, any residues of a previously used mineral oil should not exceed 5 % in quantity.For use at permanent temperatures of 80 °C max., seals made of NBR may be used. For higher temperatures, seals made of FKM should be chosen. It should be noted that elastomers from one or several manufacturers can behave differently; therefore tests should be performed.
For checking the contact pattern during running-in, the inspection paint Klübertop P 39-462 Spray (Art. No. 081295) can be used.

Sufficient scuffing protection
Good wear protection
Excellent ageing and oxidation resistance
Wide service temperature range due to good viscosity-temperature behaviour
Low foaming tendency
Energy savings due to optimised friction behaviour
Very good protection of nonferrous metals

Characteristics	Klübersynth G 4-68	Klübersynth G 4-130	Klübersynth G 4-150	Klübersynth G 4-220
Article number	012186	012024	012285	012301
Colour space	yellow	yellow	yellow	yellow
Service temperature, lower limit	-40 °C	-40 °C	-40 °C	-40 °C
Service temperature, upper limit	140 °C	140 °C	140 °C	140 °C
Density, DIN 51757, 20°C	approx 0.86 g/cm³	approx 0.86 g/cm³	approx 0.86 g/cm³	approx 0.87 g/cm³
Flash point, DIN EN ISO 2592, Cleveland open cup	≥ 200 °C	≥ 200 °C	≥ 200 °C	≥ 230 °C
Kinematic viscosity, DIN EN ISO 3104 / DIN 51562-1 / ASTM D445 / ASTM D7042, 100°C	approx 10 mm²/s	approx 17 mm²/s	approx 19 mm²/s	approx 26 mm²/s
Kinematic viscosity, DIN EN ISO 3104 / DIN 51562-1 / ASTM D445 / ASTM D7042, 40°C	approx 68 mm²/s	approx 130 mm²/s	approx 150 mm²/s	approx 220 mm²/s
Viscosity index, DIN ISO 2909	≥ 115	≥ 130	≥ 130	≥ 140
Copper corrosion, DIN EN ISO 2160, 24 h, 100°C	1 - 100 - 24 corrosion degree	1 - 100 - 24 corrosion degree	1 - 100 - 24 corrosion degree	1 - 100 - 24 corrosion degree
Pour point, DIN ISO 3016	≤ -40 °C	≤ -40 °C	≤ -40 °C	≤ -40 °C
FZG scuffing test, DIN ISO 14635-1, A / 8.3 / 90, failure load stage	≥ 12	≥ 12	≥ 12	≥ 12

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KLUBERSYNTH G 4