Next Article in Journal
New Approach to Interpreting Seizure Tests on the Translatory Oscillation Tribometer (SRV)
Previous Article in Journal
Spatiotemporal Dynamics of Frictional Systems: The Interplay of Interfacial Friction and Bulk Elasticity
Open AccessArticle

Cooled Pads for Tilting-Pad Journal Bearings

Politecnico di Milano, Department of Mechanical Engineering, Via G. La Masa 1, 20156 Milan, Italy
Department of Mechanical Engineering, The University of Danang–Danang University of Science and Technology, 54 Nguyen Luong Bang Street, Danang, Vietnam
Author to whom correspondence should be addressed.
Lubricants 2019, 7(10), 92;
Received: 11 September 2019 / Revised: 11 October 2019 / Accepted: 15 October 2019 / Published: 17 October 2019
Tilting-pad journal bearings (TPJBs) are widely installed in rotating machines owing to their high stability, but some drawbacks can be noted, such as higher cost with respect to cylindrical journal bearings and thermal issues. High temperatures in the pads correspond to low oil-film thicknesses and large thermal deformations in the pads. Therefore, the restriction of the maximum temperature of the bearing is a key aspect for oil-film bearings. The temperature reduction is generally obtained by adopting higher oil inlet flowrates or suitable oil nozzles. In this paper, the idea of using cooled pads with internal channels in which an external cooling fluid is circulated will be applied to a TPJB for the first time. The three-dimensional TEHD model of the TPJB, equipped with a cooled pad, will be introduced, and the results of the numerical simulations will be discussed. Several analyses have been performed in order to investigate the influence of cooling conditions, such as the type, flowrate, inlet temperature and number of cooled pads. Two types of pad geometry with different cross-sections of the cooling circuit, namely, circular and six-square multi-channel sections, have been compared to the reference bearing with solid pads. Simple experimental tests were performed by means of a test rig equipped with a cooled pad bearing obtained with the additive manufacturing process, thus showing the effectiveness of the solution and the agreement with the predictions. View Full-Text
Keywords: hydrodynamic lubrication; tilting-pad journal bearings; cooled pads; CFD analysis; thermal deformation; additive manufacturing; tribology hydrodynamic lubrication; tilting-pad journal bearings; cooled pads; CFD analysis; thermal deformation; additive manufacturing; tribology
Show Figures

Figure 1

MDPI and ACS Style

Chatterton, S.; Pennacchi, P.; Vania, A.; Dang, P.V. Cooled Pads for Tilting-Pad Journal Bearings. Lubricants 2019, 7, 92.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop