Compound bearings are solid lubricant bearings that operate by filling the space between the inner and outer rings with a graphite compound, which then solidifies. The filled compound continuously provides lubrication as it rotates, ensuring a long lifespan without the need for re-lubrication. These bearings solve the high-temperature lifespan degradation issues of traditional grease bearings, making them suitable for long-term use in extreme heat environments.

These are specially designed bearings that can be used in high-temperature environments or areas with heavy dust and contamination.