Tilting Pad Bearings
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[fatoiïl TILTING PAD JOURNAL BEARINGS Tilting pad journal bearings offer the optimum in rotor stability of all slide bearing types due to their exceptional stiffness and damping characteristics. Tilting pad journal bearings are therefore ideal for use in high speed machinery operating under low to high loads e.g. turbines, turbocompressors, pumps and high- speed gearboxes. Basic Design The John Crane standard tilting pad journal bearing consists of a steel housing and 5 journal pads which are supported/pivoted centrally. This enables shaft rotation in either direction. The pads are manufactured from steel and coated with a high quality white metal lining.

[fatoiïl TILTING PAD JOURNAL BEARINGS Calculation Of Tilting Pad Bearings The calculation reflecting pressure development In the hydrodynamlc surface Is the result of solving the Reynolds Differential Equation on the basis of the following assumptions: ■ The lubricant shows 'Netownlan behavior1 with respect to Its ■ The lubricant cannot be compressed ■ All generated heat Is dissipated by the lubricant Based on the Reynolds flow equation together with a subsequent energy equation a model has been developed that takes account of the blending of freshly added oil and oil leaving the...

[fatoiïl TILTING PAD JOURNAL BEARINGS Tilting Pad Journal Bearings Calculation Example Bearing type : Sample customer catalogue type Bore type/Load direction Tilting point Bearing diameter Shaft diameter Mean bearing clearance (cold/warm) Mean relative clearance (cold/warm) Excentricity/Pad radius Preload value (cold/warm) Profile factor (cold/warm) Specific load Maximum hydrodynamic pressure Oil pressure before/in the bearing Mixing factor Average bearing temperature Average viscosity Maximum oil film temperature Power loss Minimum/Permissible film thickness Reynolds-No./critical...

[fatoiïl TILTING PAD JOURNAL BEARINGS Bearing Bore Configuration Selection Table Values shown in parentheses represent maximum values. In individual applications and after consultation with our design and technical support team, these may be permitted.

[fatoiïl TILTING PAD JOURNAL BEARINGS Reference Codes For Ordering In order to provide clear identification, the products are coded Journal part-' Thrust part- Examples of John Crane bearing reference codes Tilting pad journal bearing with five journal pads, split design for both directions of rotation, Series 6 catalogue type with L/D = 0.6, bearing bore diameter 050 mm, max. external diameter Double tilting pad thrust bearing, Series 8 catalogue type with 8 thrust pads, split design for both directions of rotation, directed lubrication with spacer and shims, inner diameter 0103 mm, outer...

[fatoiïl TILTING PAD JOURNAL BEARINGS Standard John Crane products consist of two product lines, with three types of oil supply a) Laterally sealed by throttle rings and a defined seal gap to the shaft. Additional oil flow controlled by inlet holes. b) Laterally sealed by floating rings with oil flow controlled by outlet holes (Standard S2) Oil inlet nozzles metering the flow and lateral flange seals equipped with large drain holes on the lower side. All standard John Crane models are offered as split designs, proven to be the easiest way for assembly and maintenance. In addition, each...

TILTING PAD JOURNAL BEARINGS Tilting Pad Journal Bearing, Split, Flooded Lubrication, Floating Ring, Spherical Order example:

TILTING PAD JOURNAL BEARINGS Tilting Pad Journal Bearing, Split, Flooded Lubrication, Floating Ring, Spherical Retaining Screw - B/D = 0.9 Order example:

IfiÜtoHI TILTING PAD JOURNAL BEARINGS Tilting Pad Journal Bearing, Split, Directed Lubrication, Screw-in Nozzles, Spherical Retaining Screw - B/D = 0.6 Order example:

Ifijjtafl TILTING PAD JOURNAL BEARINGS Tilting Pad Journal Bearing, Split, Directed Lubrication, Screw-in Nozzles, Spherical Retaining Screw - Order example:

[faMnel TILTING PAD JOURNAL BEARINGS Self Aligning Tilting Pad Journal Bearing, Split, With Spherical Pad Support 3 nozzles per pad gap, starting ata bearing bore of 55 0 S Nozzle rail (5x), starting ata bearing bore of 160 0 Cross-section of oil feed nozzle, Tilting pads Bearing metal both directions is possible Order example:

[fatoiïl TILTING PAD JOURNAL BEARINGS Self Aligning Tilting Pad Journal Bearings With Spherical Pad Support Split, Directed Lubrication, B/D = 0.6 3 nozzles per pad gap, starting ata bearingbore of 90 0 Nozzle rail (5x), starting ata bearing bore of 225 0 Cross-section of oil feed nozzle (with screw thread forseaiing) Reverse rotational direction with offset pivot bearings Is permitted at all speeds with up to 50% operational load Housing : high-strength steel Tilting pads: high-strength steel Order example:

[fatoiïl TILTING PAD JOURNAL BEARINGS Self Aligning Tilting Pad Journal Bearings With Spherical Pad Support Split, Directed Lubrication, B/D = 0.9 3 nozzles per pad gap, starting ata bearingbore of 55 0 Nozzle rail (5x), starting ata bearing bore of 160 0 Cross-section of oil feed nozzle (with screw thread forseaiing) Reverse rotational direction with offset pivot bearings Is permitted at all speeds with up to 50% operational load Housing : high-strength steel Tilting pads: high-strength steel Order example:

TILTING PAD JOURNAL BEARINGS Tilting Pad Journal Bearing, Split, Directed Lubrication, Screw-in Nozzles, Spherical Retaining Screw - B/D = 0.6 bearing bore of 90 0 Nozzle rail (5x starting at a bearing bore of 225 0 Cross-section of oil feed nozzle depending on trie application Bearing metal : Tegostar 738 Order example:

IfirtSI TILTING PAD JOURNAL BEARINGS Tilting Pad Journal Bearing, Split, Directed Lubrication, Screw-in Nozzles, Spherical Retaining Screw - B/D = 0.9 bearing bore of 90 0 Nozzle rail (5x) starting at a bearing bore of 225 0 Cross-section of oil feed nozzle Bearing metal : Tegostar 738 Order example:

[fatoiïl TILTING PAD JOURNAL BEARINGS Single resistance temperature probe Temperature range: 0-200°C with additional mass-conductor John Crane Material-No: Double resistance temperature probe with additional mass-conductor