KLUBERSYNTH FB 4

Do you want your high-speed oil-lubricated machine tool spindle bearings to work reliably and meet your high-level operational requirements?

Do you also want to achieve the expected service for the design life of your spindle?

With these critical operational requirements in mind Klüber Lubrication have developed Klübersynth FB 4 oils to fulfil the extreme operational requirements of modern machine tools.

Klübersynth FB 4 is a finely filtered speciality lubricant made on the basis of a PAO and shows a high degree of purity.

Klübersynth FB 4 contributes to high tool spindle availability and reduces friction and wear in the bearings.

The performance capacity of Klübersynth FB 4-68 was tested and confirmed by Werkzeugmaschinenlabor WZL at RWTH Aachen (Germany).

The Klübersynth FB 4 series is applied to rolling bearings in highspeed tool spindles using oil-air lubrication systems.
Please apply the oil directly into the lubrication system reservoir from the original package to ensure that the high purity of the oil is maintained without external contamiation.
In the production stage, the oil shows a degree of purity of 15/13/10. During filling, the degree of purity may be affected by influences originating from the containers.
Ensure clean filling and that reservoirs and lubrication systems are fully closed following filling.

Longer oil life due to good resistance to ageing and oxidation
Reliable bearing operation across the speed range and at high speed factors
High machine availability due to reduced maintenance requirement
High degree of oil cleanliness
High VI index - low influence of temperature fluctuations on viscosity

Characteristics	Klübersynth FB 4-32	Klübersynth FB 4-46	Klübersynth FB 4-68
Article number	012317	012318	012319
Appearance	clear	clear	clear
Colour space	yellow	yellow	yellow
Service temperature, lower limit	-40 °C	-30 °C	-30 °C
Service temperature, upper limit	140 °C	140 °C	140 °C
Density, DIN 51757, 20°C	approx. 0.85 g/cm³	approx. 0.86 g/cm³	approx. 0.86 g/cm³
Flash point, DIN EN ISO 2592, Cleveland open cup	≥ 240 °C	≥ 260 °C	≥ 250 °C
Purity level, ISO 4406	15-13-10	15-13-10	15-13-10
ISO viscosity grade, DIN ISO 3448, ISO VG	32	46	68
Kinematic viscosity, DIN EN ISO 3104 / DIN 51562-1 / ASTM D445 / ASTM D7042, 100°C	approx. 6 mm²/s	approx. 7.6 mm²/s	approx. 9.6 mm²/s
Kinematic viscosity, DIN EN ISO 3104 / DIN 51562-1 / ASTM D445 / ASTM D7042, 40°C	approx. 32 mm²/s	approx. 46 mm²/s	approx. 68 mm²/s
Viscosity index, DIN ISO 2909	≥ 125	≥ 125	≥ 125
Pour point, DIN ISO 3016	≤ -48 °C	≤ -36 °C	≤ -36 °C
Speed factor (n x dm)	-	-	approx. 2500000 mm/min
Minimum shelf life from the date of manufacture - in a dry, frost-free place and in the unopened original container, approx	36 months	36 months	36 months

klubersynth-fb-4.pdf

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KLUBERSYNTH FB 4