344 bloor street w, suite 607, toronto, on canada m5s · pdf file344 bloor street w, suite...

344 Bloor Street W, Suite 607, Toronto, ON Canada M5S 3A7

www.lprglobal.com | www.uskoreahotlink.com

Tel.: +1-416-901-5591

E-Mail: [email protected]

http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings

http://www.lprglobal.com/

http://www.uskoreahotlink.com/

mailto:[email protected]

2

Hydrodynamic Metal Bearings Manufacturing and Repairs

South Korea being the 5th largest nuclear powerproducer (generated electricity), our manufacturerstood behind those nuclear plants, often supplyingthe entire metal bearing quantity required for newplants. As a supplier of hydrodynamic metal bearingsand machine components, our manufacturer has notonly been supplying since 1982 to not only nuclearpower plants but for manufacturers of rotatingequipment, turbine manufacturers and repaircompanies, and end users or contractors for thepower generation industry and industrial uses.

Core Industry Served and Major Clients

Over the years, we have manufactured for and served clients in Nuclear, Hydro, Thermal, petrochemical and otherpower plant industries as well as marine industry, and been qualified as a bearing manufacturer and an OEMbearing certified by leading companies globally such as Doosan Heavy Industries, GE, Toshiba, Hyundai HeavyIndustries, STX Engine, Mitsubishi Hitachi, Hitachi, KHNP, POSCO, and Lafarge.

Introduction to our bearing manufacturer

Gas Turbine Tilting Pad Journal Bearing Assembly

Gas Turbine Tilting Pad

With two ISO 9001 and ISO14001 certified manufacturing plants and an R&D center based in Busan, Korea, ourfactory is one of the few suppliers that was able to meet the needs and expectations of all six core power plants inS.Korea (Kepco). Our core competencies is in designing, manufacturing and repairing and rebabbitting ofhydrodynamic journal bearings, tilting pad thrust bearings, turbine bearing assemblies, turbomachinery bearings,pump bearings, babbitted bearings for shafts and bearing components such as liner, rings and casings as OEMproducts, or based on the user specifications.

With 4 manufacturing patents and 2 design patents, our bearing designing and manufacturing skills producequality parts for applications that require high precision, strength, and finishing quality such as power plants, gasturbines, steam turbines and generators, heavy machineries, hydro turbines, pumps, and marine propellers.

http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/


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Nuclear and Thermal Power Plants – Gas and Steam Turbine and Generator BearingsGas and Steam turbines and Generators

Tilting pad bearingallows the bearing pads to move about a pivot, following the movement of the shaft to attain its own equilibriumposition, eliminating potential of whirl instability. Our tilting pad bearings are custom manufactured to havedifferent number of pads, preload, pivot offset, type of pivot and orientation of the pads (LBP-load betweenpivots and LOP-load on pivots). Tilting pad journal bearings are applied to high speed and high performancecompressors, as well as steam turbines, gas turbines and pumps, boosting dynamic stability of the rotors. We cansupply the full customized pad bearing assembly, as well as the parts inside such as the casing and the pads.

Base Metal: ASTM A105 / B50A517B2 / SF440A / SC450 / S20C-N, etcWhite (Babbitt) Metal: ASTM B23 Gr2 / B21A14 / WJ2/Tegostar/ WL2, etc

Lower Tilting 2 Pad Bearing for Gas

Turbine

Generator BearingTilting Pad Bearing Assembly for Steam Turbine

Elliptical Bearing

Thrust Bearing

Self-Equalizing Tilting Pad Thrust Bearing

Journal Bearing Assembly for Steam Turbine

Non-Equalizing Tilting Pad Thrust Bearing

Being the very first company in Korea to manufacture and supply hydrodynamic bearings to Nuclear industry backthen, we have been contributing to the hydroelectric industry, nuclear industry, thermal industry and other powergeneration industry with generator bearings (journal and tilting pad), turbine bearings (journal and tilting pad) andassemblies. One of our specialty is the Babbitt bearings for the main turbine shafts. We manufacture all bearings inhouse and provide refurbishing and rebabbitting of your current bearings in house.

Journal bearing capability: diameter up to 1,500 mm ID and length up to 2000 mmThrust bearing capability: 2565 mm OD



THRUST BEARING ASSEMBLY

DOUBLE TILTING PAD BEARING ASSEMBLY

ELLIPTICAL BEARING ASSEMBLY

Sample Configuration of Bearing Assembly on Steam Turbine



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GE OEM Bearing Supplied to Nuclear Power Plant Clients

The process of manufacturing a bearing that fits GE specification starts with material selectionand inspection. After tinning, we processed centrifugal casting with our centrifugal castingmachine. Then we process ultra scan WM inspection before we move on to rough machining andfinal machining. For a bearing shell liner, we move straight into dimensional inspection and a nondestructive testing before shipping out, but for a generator bearing assembly, we assemble theparts after rough machining, and go through final machining after.

Bearing Shell Liner

Generator Bearing Assembly



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Gas Turbine Bearing Cases

The process of manufacturing a gas turbine bearings depends on the type of bearing required.For instance, our 4 pads that go inside a tilting pad bearing was manufactured by gravity casting,then a ultra scan WM inspection. After that, we processed through final machining, anddimensional check. Then we need to check for assembly clearance, and machined clearance. Wefinish off with PT check.But when we make lower 2 pads for the tilting pad bearing, we start with tinning, then gravitycasting. We inspect the specimen via Chalmers Test, then contact check. We then move on tomachining- final machining and relief machining. Lastly we proceed to PT check and dimentionalcheck before we ship out.

Tilting Pad Bearing (4 Pads)

Tilting Pad Bearing (Lower 2 Pads)



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Hydroelectric power plants – Water Turbine Bearings

Through a 3 year partnership R&D with Korea Hydro & Nuclear Power, we’ve developeda Super Engineering Plastic Bearing for the hydro electrical power plants for increasedstability of the hydro plant and for saving material costs.

Centrifugal casting, Dimensional Inspection and Housing Check for Carbon steel base metal Thrust bearing

Tinning, WM UT, and Final machining for Copper alloy base metal Thrust bearing



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Bearings for Turbomachinery

Pressure Dam Bearing

LPB Tilting 5 Pad Bearing

Lobe Bearing

Other Bearing Experience

E.g Marine Shafts

Offset Half Bearing

AFT/FWD Stern Tube Bearing Shaft Bearing Assembly Thrust Pad Bearing



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Hydrodynamic Metal Bearing Quality Control

We have strict quality control processes from the designing stage, to analysis and manufacturing, withtest reports at the end to produce bearings and pedestals that meet the quality.

Bearing Analysis

Bearing Pedestal Analysis

Bonded B.C

Condition at

Interface

Bearing Assembly Mounting Locations

Fixed B.C Condition at bottom face

Force Condition: 2000 kg (Vertical, Z)

Bearing Designing Capability

OFFSET HALF BEARING PRESSURE DAM BEARINGCYLINDRICAL JOURNAL BEARING

ELIPTICAL JOURNAL BEARING TILTING PAD BEARING

Pedestal bearing supporting the rotor in an independent pedestal housing separated from the main casing. Designed through FE structural analysis.



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Design, Analysis, and Repair – Rebabbitting

As a rare quality class I certificate holder for nuclear power plant services and vast experiencesproviding services on-site for reactor coolant pump repair and turbomachinery repairs, our facilityprovides rapid bearing restoration to minimize operation costs for power plants.

Our bearing repair process involves the removal of damaged babbiting metal, and Rebabbitting a newbabbitting metals (or white metals) in as little as 4 days. Journal Bearing repairs involve bearing failureanalysis, and bearing retrofit design.

Send in your original housing or casings for rebabbitting, and save 50% cost comparedto producing a new bearing assembly.

Bearing Repairs: RCP Retrofit and Rebabbitting

Journal Bearing Repair case

RCP Bearing Retrofitting case



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R & D Projects and Customized Engineering Design and Production

Power Plant Super Engineering Plastic Bearing for Aberration Generators

New White Metal Centrifugal Casting Method- In Partnership with TEGOSTAR

Variance of compressive yield strength Variance of material creep test

Pulverizing Mill Reduction Gear Thrust Bearing -In Partnership with KOSPO

>250 MW Gas Turbine Manufacturing Project- Bearing Supplied

For the possibility of using K-PEEK instead of white metal for thrust bearing, and to lower friction and increase efficiency on the guide bearings, and to extend the life of turbine bearings



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Horizontal Test Rig – Journal and Thrust Bearing Test

Journal Bearing and Thrust Bearing with a shaft diameter of Ø 100mm ~ 200mm | Speed: 3,600rpmRadial Load: 5 Ton | Thrust Load: 2 Ton

Vertical Test Rig – Turbine Shaft

Turbine Shaft of diameter Ø 95mm and speed of 800 rpm: 800rpmThrust Load: 2 Ton

R & D Projects and Customized Engineering Design and Production



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Metal Bearing Manufacturing Process

Heat Treatment Hydrogen removal and Stress

relief

Material Supply- Forging, Casting or Copper, etc

Back Metal NDT-UT/MT Material quality check and

confirm inspection by specialist

Rough Machining for size secure and Removing mill

scale

Machining Before Babbittingand determination of Babbitt

thickness

Tinning – 99.9% of Tin (Sn) Temp. and holding hour

monitored and maintained.

Centrifugal Casting – rpm and jig temperature monitored

Rough Machining After Babbitting Inner side of Babbitt

metal surface machining

Accessory Machining- Includes half joint machining, hold and

tap machining and oil dam machining process

White Metal /Babbitt Metal NDT / UT - Follows the acceptance criteria of

customer

White/Babbitt Metal NDT-PTPT Testing of the Babbitt material surface inside

Final Machining

Inspection -Dimensional inspection, visual inspection

Polishing and Assembly-Removal of dirt, and polishing

burr

Packaging and Shipping



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MAN Diesel Certification of Qualification

Bharat Heavy Electricals Ltd Certification of Qualification

Supplier Certificate from Korea Western Power Co.,Ltd

Mitsubishi Heavy Industries Certificate of Qualification

Toshiba Certificate of Qualification

Doosan Heavy I&C Certificate of Qualification

ISO 9001 : 2008 ISO 14001 : 2004 Hitachi Certification of Qualification

Certifications



LPR Global, Inc.344 Bloor Street W, Suite #607 Toronto, ON M5S 3A7 Canada

www.lprglobal.com | www.uskoreahotlink.com

Tel: +1-416-901-5591

E-Mail: [email protected]

http://www.lprglobal.com/

http://www.uskoreahotlink.com/

mailto:[email protected]

344 bloor street w, suite 607, toronto, on canada m5s · pdf file344 bloor street w, suite...

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