The RCB650 is a universal basic product, regardless of high pressure, low pressure, high temperature, low temperature, oil lubrication, oil free lubrication or water lubrication. All can be applied. The matrix of the product is high force brass, which is twice as hard as the ordinary copper sleeve. The wear resistance is more than doubled. Therefore, it can be used in continuous casting machines, rolling mills and conveyors in the metallurgical industry. Also used in plastic injection molding machine mold locking mechanism, extrusion mechanism. The automatic switch of high voltage electricity, the lifting support part of construction machinery, and the arc door support of water conservancy project. Pulley and drive wheel parts. There are paper machine drying track, automobile mold, ship anchor sliding parts, etc.