Klübersynth GEM 4-100 N High performance transmission oil 20L

Klübersynth GEM 4 N is a synthetic high-performance gear and multipurpose oil based on polyalphaolefin satisfying the growing requirements and increasing power density of modern gears. Klübersynth GEM 4 N includes KlüberComp Lube Technology, i.e. it is based on especially high-grade raw materials and advanced additives, enabling maximum performance in the lubrication of all gear components.

Klübersynth GEM 4 N clearly exceeds CLP requirements according to DIN 51517-3. Corresponding gears can be switched to Klübersynth GEM 4 N without prior consultation with the gear manufacturer provided the general application notes are observed.

Klüberoil GEM 4 N offers high scuffing load capacity. Gears are sufficiently protected against scuffing even at extremely high peak loads, vibrations or oscillations. The excellent wear protection of both gears and rolling bearings ensures that the service life calculated for the lubricated components is achieved, leading to lower maintenance and repair costs. The oil's high micropitting resistance of GFT ≥ 10 according 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.

Klübersynth GEM 4 N offers a much longer service life than mineral oils due to the excellent ageing and oxidation resistance of the selected raw materials; 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. Freudenberg seals made of 72 NBR 902, 75 FKM 585, 75 FKM 260466 and 75 FKM 170055 are resistant to Klübersynth GEM 4 N. Leakage and oil
contamination are prevented.
The excellent viscosity-temperature behaviour supports the formation of a sufficient lubricant film across a wide service temperature range, even at elevated and high temperatures. 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 GEM 4 N is approved by SEW Eurodrive, Getriebebau Nord, Lenze, Moventas, Bonfiglioli, Rexnord, Hansen, Brevini, Stöber Antriebstechnik, ZAE Antriebssysteme, David Brown, FLSmidth MAAG Gears, etc.

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

Your benefits at a glance:

• High scuffing protection
• Excellent wear protection for gears and rolling bearings
• Good shear stability for reliable lubricant film formation
• High micropitting resistance
• 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
• Good elastomer compatibility
• Approvals by numerous gear OEMs

Application:
Klübersynth GEM 4 N was specially developed for the lubrication of spur, bevel, hypoid and planetary gears that are subject to high loads. Such gears are frequently used in the wind, steel, mining and sugar industries. It is also used for the lubrication of standard worm gears as defined in DIN 3996.
Klübersynth GEM 4 N can also be used for the lubrication of plain and rolling bearings, all kinds of toothed couplings, chains, guideways, joints, spindles and pumps, especially in applications where the equipment is exposed to elevated temperatures or pronounced temperature fluctuations.

Application notes:
Klübersynth GEM 4 N can be applied by means of immersion, immersion circulation or injection.
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 GEM 4 N is miscible with mineral oils. However, for the Klübersynth GEM 4 N 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.

Product data:

Marking acc. to DIN 51502	CLP HC 100
Classification acc. to ISO 12925-1	CKC 100
Lower service temperature	-40 °C / -40 °F
Upper service temperature	140 °C / 284 °F
Density, based on DIN 51757) at 15 °C	approx. 850 kg/m³
Foam test, ASTM-D 892, ISO 6247, sequence I/24 °C	<= 100/10 ml
Foam test, ASTM-D 892, ISO 6247, sequence II/ 93.5 °C	<= 100/10 ml
Foam test, ASTM D 892, ISO 6247, sequence III/24°C	<= 100/10 ml
Flash point, DIN EN ISO 2592, Cleveland, open-cup apparatus	>= 200 °C
Kinematic viscosity, DIN 51562 pt. 01/ASTM D-445/ASTM D 7042, 40 °C	approx. 100 mm²/s
Kinematic viscosity, DIN 51562 pt. 01/ASTM D-445/ASTM D 7042, 100 °C	approx. 14 mm²/s
ISO viscosity grade, DIN ISO 3448	100
Viscosity index, DIN ISO 2909	>= 150
Copper corrosion, DIN EN ISO 2160, 3 h/100 °C	1 - 100 corrosion degree
Anticorrosive properties on steel, DIN ISO 7120, method A, steel, 24 h/60 °C	no rust corrosion degree
Pour point, DIN ISO 3016	<= -40 °C
Ageing properties, ASTM D 2893, increase in viscosity	<= 6 %
FZG scuffing test, DIN ISO 14635-1, A/8.3/90, scuffing load stage	>= 14
FZG scuffing test, based on DIN ISO 14635-1, A/16.6/90, scuffing load stage	>= 12
FAG FE8 rolling bearing test, DIN 51819-3, D 7,5/80-80, wear of rolling element	<= 30 mg
FAG FE8 rolling bearing test, DIN 51819-3, D 7,5/80-80, wear of cage	<= 200 mg
Minimum shelf life from the date of manufacture - in a dry, frost-free place and in the unopened  original container, approx.	24 months