The oil lubrication plays a key role in high-pressure pump power end. Invalidation of the oil film between the crankshaft journal and the connection rod bearing can lead to serious damage of those parts and completely break down the functionality of the pump.
To maintain the lubrication performance, the following methods are usually applied.
1. Install a lubrication condenser, which keeps the oil temperature below 75℃.
2. Besides of keeping the oil clean, install water baffles on intermediate rods to prevent leaking liquid touches the oil tank. Lubrication oil becomes immediately ineffective once it's damped.
2. When the pump capacity power is high. Forced lubrication system is installed. The oil pressure should be ideally higher than 2 bar.