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KLUBER Kluberquiet BQ 74-73,N 1KG
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Klüberquiet BQ 74‑73 N
low‑noise grease for high‑speed bearings
Klüberquiet BQ 74‑73 N is a premium polyurea grease based on ester and synthetic hydrocarbon oils. Designed for lifetime lubrication of high-speed rolling bearings, it delivers exceptionally quiet operation, wide temperature performance, and extended bearing service life.
Applications:
Ideal for bearings in electric motors, fans, air conditioners, generators, belt tensioners (e.g. automotive), machine-tool spindles, motor spindles, household appliances and office equipment where low noise and long service life are critical.
Advantages and benefits:
- Lifetime lubrication: suitable for vertical bearings and those with rotating outer rings.
- Low-noise performance: verified on low-noise test rigs.
- Broad temperature range: –40 °C to +160 °C with excellent low-temp torque.
- High thermal and mechanical stability: corrosion and water-resistant.
Specifications:
- Worked penetration (25 °C): 220–250 ×0.1 mm
- Base oil viscosity @40 °C / 100 °C: ~60 / ~9.5 mm²/s
Technical data:
| Property | Unit | Typical value |
|---|---|---|
| Service temperature | °C | –40 to +160 |
| Worked penetration (25 °C) | ×0.1 mm | 220–250 |
| Viscosity base oil @40 °C | mm²/s | ~60 |
| Viscosity base oil @100 °C | mm²/s | ~9.5 |
| Dropping point | °C | ≥ 250 |
| Water resistance (90 °C / 3 h) | – | ≤ 1 (DIN 51807) |
| EMCOR corrosion | class | ≤ 3 (3 % NaCl), ≤ 1 (water) |
Storage:
Store in sealed original containers in a cool, dry place. Shelf life: minimum 36 months.
Klüberquiet BQ 74‑73 N – advanced low‑noise grease for high‑speed bearings – ensuring reliability and operational comfort.
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