• 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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