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针对D155型注水泵的筒形轴瓦轴承结构及润滑方式存在的缺陷，将该型注水泵改用球形轴瓦轴承，并采取强制润滑方式.改用的球形轴瓦轴承的瓦球两端设有O形密封圈，起封油隔水作用；瓦口处的泄油槽和迷宫密封式油封可阻止轴瓦向外渗油；球形轴瓦上开有余裕油泄流通道和贴近转动副的测温孔；稳流短节中的薄壁小孔具有稳定和观察油流的功能。改用球形轴瓦轴承，不须对D155型注水泵作任何改动，且不再需要安装润滑油冷却水装置，也减小了系的振动，提高了泵的运行可靠性。
Aiming at the defects of bearing structure and lubrication method of D155 type water injection pump, the type of water injection pump is changed to spherical plain bearing, and forced lubrication is adopted.With the Oval The sealing ring, the sealing oil from the water; mouth drain groove and labyrinth seal oil seal can prevent oil leakage to the bearing; spherical bearing on the open oil discharge channel and close to the rotation of the deputy temperature hole; steady flow short Thin-walled holes in the section have the function of stabilizing and observing the oil flow. The use of ball bearings instead of any changes to the D155 type of water injection pump, and no longer need to install lubricating oil cooling device, but also reduces the Department of vibration and improve the reliability of the operation of the pump.