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Klüber ISOFLEX NBU 15
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Klüber ISOFLEX NBU 15
Spindle bearing grease
Application Klüber ISOFLEX NBU 15
ISOFLEX NBU 15 is primarily used for spindle bearings and high-speed plain bearings, e.g. in machine tools and textile machines. Further applications are in threaded spindles, ball screws operating under high loads, running gear bearings, as a long-term grease in cableway bearings and in precision engineering. It may also be used for the lubrication of tooth flanks in precision gears (e.g. bevel gears in milling machines, electromechanical valve actuators).
Performance, Features & Benefits of Klüber ISOFLEX NBU 15 are:
- Tried and tested over many years especially in high-speed applications
- Longer component life due to optimized wear protection and good pressure absorption capacity
- Excellent resistance to water and media as well as above-average anticorrosive additives protect bearings against premature failure, thus helping to minimize repair costs
- Low intrinsic bearing heat due to low lubricant friction enabling longer service life
- Uninterrupted machine operation due to good pumpability and metering in customary centralized lubricating systems
If you have any questions, please contact OilOnline Technical Helpdesk
Product Description Klüber ISOFLEX NBU 15
ISOFLEX NBU 15 is a high-speed grease with a good pressure absorption capacity. It consists of a combination of ester oil, synthetic hydrocarbon oil and mineral oil and a barium complex soap. It offers good protection against wear and corrosion and is resistant to water, media and oxidation.
Typical Characteristics
| Product specifications : | Klüber ISOFLEX NBU 15 | |
| Article number | 004026 | |
| Lower service temperature | -40 °C / -40 °F | |
| Upper service temperature | 130 °C / 266 °F | |
| Colour space | beige | |
| Texture | homogeneous | |
| Texture | short-fibred | |
| Density at 20 °C | approx. 0.99 g/cm³ | |
| Worked penetration, 25 °C, lower limit value | DIN ISO 2137 | 265 x 0.1 mm |
| Worked penetration, 25 °C, upper limit value | DIN ISO 2137 | 295 x 0.1 mm |
| Shear viscosity at 25 °C, shear rate 300 s-1, equipment: rotational viscometer, lower limit value | 4 000 mPas | |
| Shear viscosity at 25°C, shear rate 300 s-1, equipment:rotational viscometer, upper limit value | 8 000 mPas | |
| Kinematic viscosity of the base oil, 40 °C | DIN 51562 pt. 01/ASTM D-445/ASTM D 7042 | approx. 21 mm²/s |
| Kinematic viscosity of the base oil, 100 °C | DIN 51562 pt. 01/ASTM D-445/ASTM D 7042 | approx. 4.5 mm²/s |
| Corrosion inhibiting properties of lubricating greases, (SKF-EMCOR), test duration: 1 week, distilled water |
DIN 51802 | <= 1 corrosion degree |
| Drop point | DIN ISO 2176, IP 396 | >= 220 °C |
| Speed factor (n x dm) | approx. 1 600 000 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 |
Application notes
The lubricant is applied by brush, spatula, grease gun or grease cartridge. Owing to the many elastomer and plastic compositions, we recommend checking the grease's compatibility prior to series application with elastomers or plastics.
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