What can replace the bearing between two rods?

Copper sleeve. The copper sleeve can replace the bearing at low speed and heavy load, and the sliding copper sleeve is based on high-strength Rongchang copper alloy. Under the condition of dry friction, we design a layer of pre-lubrication film on the bearing surface to ensure that the solid lubricant can be transferred to the dual parts in the shortest time and form an effective solid lubrication film. Therefore, the self-lubricating copper sleeve is self-lubricating and can work without oiling, which can replace the bearing under the condition of low speed and heavy load.