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Klüber Klübersynth GE 4 75W90
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Klüber Klübersynth GE 4 75 W 90
Synthetic high-performance gear oil
Application Klüber Klübersynth GE 4 75 W 90
Klübersynth GE 4 75 W 90 is used for the lubrication of spur, bevel and hypoid gears requiring maximum wear protection and service life, even when exposed to impact loads. Klübersynth GE 4 75 W 90 is suitable for drives in rail vehicles, industrial robots, textile machines and forming presses.
Performance, Features & Benefits of Klüber Klübersynth GE 4 75 W 90 are:
- Highest scuffing load capacity API GL-5
- Excellent wear protection of both gears and rolling bearings
- Good shear stability for reliable lubricating film formation
- High micropitting resistancer
- Excellent ageing and oxidation resistance
- Wide service temperature range due to good viscosity-temperature behaviour
- Good anti-foam properties
- Particularly suitable for rail vehicle gears - approved by Watteeuw, Voith Turbo, Siemens-Flender, Bombardier, Deutsche Bahn AG, Stadler and many more
If you have any questions, please contact OilOnline Technical Helpdesk
Product Description Klüber Klübersynth GE 4 75 W 90
Klübersynth GE 4 75 W 90 is a fully synthetic high-performance gear oil based on polyalphaolefin (PAO), which offers high shear stability and protection, even when exposed to impact load. It is particularly suitable for rail vehicle gears subject to high loads. This high-performance gear oil offers a very high scuffing load capacity of API GL-5, and can therefore be used for gears which have to meet API GL-4 or API GL-5 requirements. The good wear protection of both gears and rolling bearings enables a long service life of the lubricated components for reduced maintenance costs. The high micropitting resistance of GFT ≥ 10 acc. to FVA 54/7 offers sufficient protection to gears that are subject to high loads and would normally be susceptible to this type of damage. The good shear stability of the synthetic base oil prevents decrease of the lubricating film thickness even under high loads. Due to the excellent ageing and oxidation stability of the synthetic base oil, oil change intervals are much longer than with mineral oils, thus reducing maintenance costs. The good low-temperature properties enable a reliable function of the gear components, even at low temperatures. Operational reliability of the lubricated components is also enhanced by the good anti-foam and anti-corrosion properties.
Typical Characteristics
| Product specifications | Method |
Klüber Klübersynth GE 4 75 W 90 |
|
| Article number | 012117 | ||
| Lower service temperature | -40 °C / -40 °F | ||
| Upper service temperature | 150 °C / 302 °F | ||
| Density | 20 °C | DIN 51757 | approx. 0.86 g/cm³ |
| Kinematic viscosity | 40 °C | DIN 51562 pt. 01/ASTM D-445/ASTM D 7042 | approx. 130 mm²/s |
| Kinematic viscosity | 100 °C | DIN 51562 pt. 01/ASTM D-445/ASTM D 7042 | approx. 18 mm²/s |
| SAE-viscosity grade | DIN ISO 2909 | 75 W 90 | |
| Viscosity index | DIN ISO 2909 | >= 150 | |
| Flash point, Cleveland, open-cup apparatus | >= 210 °C | DIN EN ISO 2592 | |
| Anticorrosive properties on steel | 24 h/60 °C | DIN ISO 7120, method A, steel | no rust corrosion degree |
| Four-ball EP tester, welding load | DIN 51350 part 2 |
>= 3 000 N |
|
| Pour point | <= -42 °C | DIN ISO 3016 | |
| API scuffing load capacity |
API GL 5 |
||
| Flender foaming test with original oil, increase in volume | <= 15 % | ||
| FZG scuffing test, scuffing load stage | DIN ISO 14635-1, A/8.3/90 |
>= 14 |
|
| FZG micropitting test, failure load stage | FVA 54, GF-C/8,3/90 | >= 10 | |
| FAG FE8 rolling bearing test, wear of rolling element | DIN 51819-3, D 7,5/80-80 |
<= 30 mg |
|
| Minimum shelf life from the date of manufacture - in a dry, frost-free place and in the unopened original container, approx. |
36 months |
Application notes
Klübersynth GE 4 75 W 90 can be applied by means of immersion, immersion circulation or injection. The use of dripfeed oilers, brushes, oil cans or suitable automatic lubricating systems is also possible.
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