# Characterization of High-Power Turbomachinery Tilting Pad Journal Bearings: First Results Obtained on a Novel Test Bench

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## Abstract

**:**

## 1. Introduction

## 2. The Test Bench

## 3. Experimental Results

^{3}at 40 °C and a viscosity index of 118.

#### 3.1. Slow Variable Results

#### 3.2. Identification Results

## 4. Conclusions

## Acknowledgments

## Author Contributions

## Conflicts of Interest

## References

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**Figure 10.**Results of test at different speeds, 58 kN. Trends in time of: (

**a**) forces, torque, rotational speed and power; (

**b**) displacements; (

**c**) pads temperatures.

**Figure 15.**Stiffness and damping coefficients as function of excitation frequency, at 3000 rpm (50 Hz) rotational speed, for a load of 58 kN (y: vertical direction, x: horizontal direction, the dashed red vertical line indicates the rotational frequency).

**Figure 16.**Synchronous stiffness and damping coefficients as function of rotational speed, for a load of 58 kN (y: vertical direction, x: horizontal direction).

Characteristic | Value Range |
---|---|

Bearing diameter [mm] | 150–300 |

Bearing length to diameter ratio | 0.4–1 |

Shaft rotational speed [rpm] | 0–24,000 |

Electric motor power [kW] | 630 |

Bearing peripheral speed [m/s] | 0–150 |

Static load [kN] | 0–270 |

Dynamic load [kN] | 0–40 |

Frequency of the dynamic load [Hz] | 0–350 |

Bearing oil flow rate [L/min] | 125–1100 |

Bearing oil inlet temperature [°C] | 30–120 |

Plant maximum total power [kW] | 1000 |

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**MDPI and ACS Style**

Ciulli, E.; Forte, P.; Libraschi, M.; Naldi, L.; Nuti, M.
Characterization of High-Power Turbomachinery Tilting Pad Journal Bearings: First Results Obtained on a Novel Test Bench. *Lubricants* **2018**, *6*, 4.
https://doi.org/10.3390/lubricants6010004

**AMA Style**

Ciulli E, Forte P, Libraschi M, Naldi L, Nuti M.
Characterization of High-Power Turbomachinery Tilting Pad Journal Bearings: First Results Obtained on a Novel Test Bench. *Lubricants*. 2018; 6(1):4.
https://doi.org/10.3390/lubricants6010004

**Chicago/Turabian Style**

Ciulli, Enrico, Paola Forte, Mirko Libraschi, Lorenzo Naldi, and Matteo Nuti.
2018. "Characterization of High-Power Turbomachinery Tilting Pad Journal Bearings: First Results Obtained on a Novel Test Bench" *Lubricants* 6, no. 1: 4.
https://doi.org/10.3390/lubricants6010004