<p>During the transportation of refined oil by pumps, there is a significant occurrence of vertical vibration in the bearing boxes at the non-driving end. This excessive vibration can lead to cracks in the pump shell and damage to auxiliary lines, resulting in oil leakage. To address this issue, a bellows-type dynamic vibration absorber (B-DVA) is proposed in this study. Different from existing coil springs or cantilever beam dynamic vibration absorbers, the B-DVA offers advantages such as stability, consistent mechanical parameters, and tolerance to temperature variations, making it suitable for vibration reduction in oil pump equipment. The design principle of the proposed B-DVA is described first, and the axial stiffness of the bellows acting as the elastic element, is calculated by using the curved beam model. The analytical results are compared with those obtained from finite element method (FEM). It is shown that the curved beam model is able to accurately depict the variation of stiffness with structral parameters. Then, a quasi-static test is carried out to verify the anlytical and FEM rerults. Furthermore, the frequency response characteristics of the B-DVA sample are measured through an frequency-sweeping test, and subsequent experiments on-site are carried out to validate the effectiveness of the B-DVA for vibration reduction of main oil pumps. The measured data demonstrate that the proposed B-DVA devices can attenuate pump vibration by more than 57 %, and it is firmly confirmed that the B-DVA is a very effective technique for vibration suppression of oil pumps.</p>