Klüber Klübersynth GEM 4-680 N

Skip to the end of the images gallery

Skip to the beginning of the images gallery

Your benefit: pallet advantage from 2 barrels

97% supplied in 5 working days

Shipping Rate

No VAT within the EU

Pay online or by invoice (within 30 days)

Overview

Klüber Klübersynth GEM 4-680 N

Synthetic high-performance gear and multipurpose oil with KlüberComp Lube Technology

Application Klüber Klübersynth GEM 4-680 N

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.

Details

Performance, Features & Benefits of Klüber Klübersynth GEM 4-680 N are:

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

If you have any questions, please contact OilOnline Technical Helpdesk

Product Description Klüber Klübersynth GEM 4-680 N

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. Klübersynth 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 (tested at 90, 60 and 40 °C) 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 statically and dynamically 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. WECs have been known as a life-reducing failure mode among wind turbine operators, bearing manufacturers and lubricant formulators. Our intensive research and testing activities reveal the excellent protection against WEC provided by the additives contained in Klübersynth GEM 4 N. Klübersynth GEM 4 N is approved by Siemens-Flender, SEW Eurodrive, Getriebebau Nord, Lenze, Moventas, Bonfiglioli, Rexnord, Hansen, Brevini, Stöber Antriebstechnik, ZAE Antriebssysteme, David Brown, FLSmidth MAAG Gears, etc. Klübersynth GEM 4-320 N is approved for use in wind power plants by Winergy, Moventas, ZF WP, Bosch Rexroth, ACCIONA ENERGY, and many more. 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. * For further information, please see our flyer: KlüberComp Lube Technology – Gear oils meeting the highest requirements

Typical Characteristics

Product specifications		Method	Klüber Klübersynth GEM 4-680 N
Article number			012237
Marking acc. to		DIN 51502	CLP HC 680
Classification acc.		ISO 12925-1	CKC 680
Lower service temperature	-30 °C / -22 °F
Upper service temperature	140 °C / 284 °F
Density	15 °C	DIN 51757	approx. 860 kg/m³
Foam test	sequence I/24 °C	ASTM-D 892, ISO 6247	<= 100/10 ml
Foam test	sequence II/ 93.5 °C	ASTM-D 892, ISO 6247	<= 100/10 ml
Foam test	sequence III/24°C	ASTM D 892, ISO 6247	<= 100/10 ml
Flash point, Cleveland, open-cup apparatus	>= 200 °C	DIN EN ISO 2592
Kinematic viscosity	40 °C	DIN 51562 pt. 01/ASTM D-445/ASTM D 7042	approx. 680 mm²/s
Kinematic viscosity	100 °C	DIN 51562 pt. 01/ASTM D-445/ASTM D 7042	approx. 62 mm²/s
ISO viscosity grade		DIN ISO 3448	680
Viscosity index		DIN ISO 2909	>= 160
Copper corrosion	3 h/100 °C	DIN EN ISO 2160	1 - 100 corrosion degree
Anticorrosive properties on steel	24 h/60 °C	DIN ISO 7120, method A, steel	no rust corrosion degree
Pour point	<= -30 °C	DIN ISO 3016
Ageing properties, increase in viscosity		ASTM D 2893	<= 6 %
FZG scuffing test, scuffing load stage		DIN ISO 14635-1, A/8.3/90	>= 14
FZG scuffing test, scuffing load stage		DIN ISO 14635-1, A/16.6/90	>= 12
FAG FE8 rolling bearing test, wear of rolling element		DIN 51819-3, D 7,5/80-80	< 5 mg
FAG FE8 rolling bearing test, wear of cage		DIN 51819-3, D 7,5/80-80	<= 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

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 Questions

Customer Questions