Klüber CONSTANT GL 2000: Reliable Impregnating Fluid for Lifetime Lubrication of Sintered Bearings

author: Rose

2026-04-10

Product Overview

Klüber CONSTANT GL 2000 is a mineral oil-based impregnating fluid designed for sintered metal plain bearings. It is engineered to provide effective lubrication under:

Low and high temperatures
Low and high speeds (e.g. <0.3 m/s to >5 m/s)
Light to heavy loads (e.g. <0.15 to >3 N/mm²)

Its special formulation, combined with selected additives, allows it to cover a broad spectrum of industrial applications.

Key Performance Advantages

1. Low Noise and Smooth Operation

The product contains a soap component that enhances damping behavior, resulting in quieter operation and smoother running of bearings.

2. Extended Bearing Service Life

Excellent oxidation resistance helps reduce lubricant degradation, significantly prolonging bearing life.

3. Energy Efficiency and Reduced Friction

Low frictional torque contributes to improved mechanical efficiency and energy savings in rotating systems.

4. High Ageing Stability at Elevated Speeds

Reduced internal heat generation ensures better ageing stability, especially in high-speed applications.

5. Lifetime Lubrication Capability

CONSTANT GL 2000 supports long-term or lifetime lubrication, minimizing maintenance requirements and improving operational reliability.

Application Areas

Klüber CONSTANT GL 2000 is specifically designed for:

Sintered metal plain bearings
Precision engineering components
Automotive systems
Electrical equipment
Household appliances

It is particularly suitable for applications involving start-stop operation, where consistent lubrication is critical.

Application Method

This product is typically applied using a vacuum impregnation process, allowing the fluid to fully penetrate and fill the pores of sintered metal bearings.

This ensures:

Uniform lubricant distribution
Long-term retention inside the bearing structure
Stable lubrication performance over time

Typical Technical Data

Base oil: Mineral oil
Thickener: Lithium soap
Operating temperature range: approx. -10°C to 100°C
Density (20°C): approx. 0.88 g/cm³
Base oil viscosity (40°C): approx. 46 mm²/s
Appearance: Brown, viscous fluid

Why Choose Klüber CONSTANT GL 2000?

Unlike conventional lubricants, CONSTANT GL 2000 is specifically engineered for porous bearing materials, ensuring deep penetration and long-lasting lubrication performance.

It helps manufacturers and maintenance teams to:

Reduce noise and vibration
Extend component lifespan
Improve energy efficiency
Achieve maintenance-free operation

Conclusion

For industries relying on sintered metal plain bearings, selecting the right impregnating fluid is critical. Klüber CONSTANT GL 2000 offers a proven solution with low-noise performance, long service life, and reliable lifetime lubrication, making it a preferred choice for demanding industrial applications.