Using Miba Fixed Geometry Bearings (or Sleeve Bearings) is an economical way to achieve good rotor dynamic performance. Miba bearings are characterized by their precise bore tolerances and are highly customizable so you can dial in the stiffness and damping coefficients to optimize your machine’s performance. Some of the many bore configurations possible are: cylindrical, offset half, lemon bore, 3-lobe, 4-lobe, or directed lobe and can be provided with fixed flat land, taper land, compound taper land, or tilting pad thrust options.

Tilting pad journal bearings are designed for the most demanding turbomachinery applications, in terms of speed, load, and rotor dynamics. Due to the tilting capability of the individual pads, this 4- or 5-pad tilting pad journal bearing design does not tend to produce self-excited rotor vibrations and is suitable for high sliding speeds (e.g. 100 m/s and above). With an appropriate oil supply, bearing loads of > 3 MPa are achievable for continuous operation.

Tilting pad thrust bearings are designed for the most demanding turbomachinery applications. Due to the tilting capability of the individual pads, thrust bearings allow high sliding speeds ( e.g. 160 m/s and above). With an appropriate oil supply, bearing loads of >4 MPa are achievable for continuous operation.

The combination bearings (thrust and journal bearing in one housing) are designed for the most demanding turbomachinery applications, in terms of speed, load and rotor dynamics. The combined bearing saves space and due to the tilting capability of the individual pads in both radial and axial direction, it is suitable for sliding speeds up to 100 m/s (engli units) and above. With appropriate oil supply, bearing loads of > 3 MPa (engli units) are achievable for continuous operation.

Miba Vertical Bearings are designed to meet high standards and are suitable for the most demanding conditions. To guarantee their reliability, the technology is based on structural studies and analyses. The bearing housing is manufactured with GGG40 nodular cast iron, which provides high mechanical resistance, excellent heat dissipation capacity, high structural stiffness, and low vibration levels. Further on, it can withstand very cold ambient temperatures.

Miba housing bearings include pedestal, end flange, and center flange bearings. The hydrodynamic bearings are supplied in halves and spherically seated in the housing. ZF and ZM are flanged onto the application, while ZR or US Design pedestal bearings stand in front of it. The housing design allows a convenient installation due to the smart modular system, which guarantees an easy adaptation of the bearing to your applications.

Seal solutions can make a big difference in the way your rotating equipment performs. Our business is servicing our customers’ needs for the repair and manufacture of labyrinth seals and bearings for turbomachinery, either in-kind or customized to your operation.