Rotating supports, as the core rotating components of heavy machinery (such as cranes and excavators), have their service life and operational stability directly influenced by lubrication quality. The following summarizes key points from dimensions including lubricant selection, cycle control, and operational specifications:

1. Lubricant Selection Principles?

Base Oil Viscosity Adaptation?:

High-temperature conditions (e.g., steel mill equipment) require calcium sulfonate-based grease with a temperature resistance of up to 180°C; low-temperature environments (below -30°C) should use synthetic hydrocarbon-based grease to avoid solidification.

Additive Matching?:

Heavy-load impact scenarios require molybdenum disulfide extreme pressure additives. A case study of a wind turbine gearbox lubrication showed such additives reduce raceway wear by 40%.

2. Dynamic Adjustment of Lubrication Cycles?

Standard Cycle?:

Every 300 hours or 6 months in dry environments; shorten to 50-100 hours in humid/dusty conditions.

Special Conditions?:

Continuous operation equipment requires automatic lubrication systems. For example, after a port crane was retrofitted, bearing life extended from 1.5 to 3 years.

3. Operational Standards and Prohibitions?

Greasing Method?:

During manual lubrication, slowly rotate the support body to ensure even grease distribution in the raceway. Initial greasing should fill 2/3 of the cavity.

Seal Protection?:

Avoid high-pressure water washing of seals, as water intrusion causes grease emulsification and abnormal wear (35% of rotating support failures are attributed to this).

4. Smart Lubrication Trends?

Oil quantity sensor-equipped systems enable real-time monitoring. One construction machinery manufacturer reported a 52% reduction in failure rates and 28% lower maintenance costs.

5. Common Issue Handling?

Blackened Grease?: Indicates metal wear; inspect the raceway immediately.

Abnormal Noise/Vibration?: May result from insufficient lubrication or contamination; clean thoroughly and regrease.

6. Maintenance Record Management?

Maintain lubrication logs documenting greasing time, brand, quantity, and operators to facilitate failure mode traceability.