Precision crossed roller bearings are critical components in applications requiring high rigidity, точность, and the ability to handle combined loads (радиальный, осевой, и моментные нагрузки). Proper lubrication is paramount to their performance, долголетие, and overall system reliability.
Crossed Roller Bearing Lubrication
1. Importance of Lubrication:
Reduces Friction and Wear: Creates a lubricating film between rolling elements and raceways, minimizing direct metal-to-metal contact.
Extends Fatigue Life: A proper lubricant film reduces stress concentrations and prevents surface damage, thereby prolonging the bearing’s operational life.
Dissipates Heat: Helps to carry away heat generated by friction, preventing overheating and material degradation.
Prevents Corrosion: Forms a protective barrier against moisture, загрязняющие вещества, and corrosive agents.
Damping and Noise Reduction: The oil film can absorb some energy, contributing to smoother operation and reduced noise.
Герметизация: Смазка, в частности, can act as a barrier to prevent the ingress of dust, грязь, and moisture.
2. Types of Lubricants
The two main types of lubricants used for precision crossed roller bearings are grease and oil. The choice depends heavily on the specific application’s operating conditions (скорость, нагрузка, температура, environment).
Grease Lubrication:
преимущества: Adheres well to surfaces, lasts longer, provides good sealing against contaminants, and is often preferred for applications where easy access for re-lubrication is limited.
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