Fluid Film Bearings
Fluid Film Bearings for Journal, Thrust & Combination Applications
Wenzhou Zhengbang Bearing Co., Ltd. manufactures fluid film bearings for turbines, compressors, motors, generators, pumps and other rotating equipment. The range includes journal bearings, fluid film thrust bearings, tilting pad thrust bearings, Babbitt combination bearings and custom bearing assemblies.
Since 2007, the company has completed more than 500 custom bearing designs. Bearings can be manufactured from customer drawings, equipment specifications, operating data or worn bearing samples, with metric and inch configurations available for OEM replacement and custom applications.
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![Journal Bearing]()
Journal BearingJournal Bearing is an oil-lubricated plain bearing for radial shaft support in rotating machinery. It is supplied for OEM, replacement, and maintenance requirements, with production based on...read more -
![Flanged Steel Sleeve Bearing]()
Flanged Steel Sleeve BearingFlanged Steel Sleeve Bearing is a steel-sleeve fluid film bearing for heavy-duty, low-speed rotating equipment. Its flanged construction provides integrated axial positioning, while the sliding...read more -
![Journal Thrust Bearing]()
Journal Thrust BearingJournal Thrust Bearing combines radial and axial load support in a single bearing assembly for large rotating equipment. It is available for OEM, replacement, and application-specific...read more -
![Fluid Film Thrust Bearing]()
Fluid Film Thrust BearingFluid Film Thrust Bearings support axial loads in large rotating equipment by maintaining a lubricating oil film between the thrust pads and rotating thrust disc. The oil film reduces direct...read more -
![Taper-land Thrust Bearing]()
Taper-land Thrust BearingTaper-land Thrust Bearings are fixed-profile hydrodynamic bearings for axial load support in large rotating machinery. Their tapered land geometry provides a compact, application-specific solution...read more -
![Plain Journal Fluid Film Bearing]()
Plain Journal Fluid Film BearingPlain Journal Fluid Film Bearing is a radial sliding bearing that supports rotating shafts through a lubricating oil film formed between the shaft journal and bearing surface. It is supplied for...read more -
![Tin Bronze Thrust Bearing]()
Tin Bronze Thrust BearingTin Bronze Thrust Bearing is an axial-load bearing component for industrial rotating equipment. It provides a tin bronze bearing surface for thrust applications, with specifications and dimensions...read more -
![Pad Thrust Bearing]()
Pad Thrust BearingPad Thrust Bearings are sliding bearings designed to support axial loads in large rotating equipment. A lubricating oil film forms between the thrust pads and thrust disc during operation,...read more -
![Tilting Pad Thrust Bearing]()
Tilting Pad Thrust BearingTilting Pad Thrust Bearings are fluid-film bearings that support axial loads in rotating machinery through an oil film between independently pivoting pads and the thrust disc. Their self-adjusting...read more -
![Tilting Pad Thrust Bearing Assembly]()
Tilting Pad Thrust Bearing AssemblyThe Tilting Pad Thrust Bearing Assembly is designed to support axial loads in rotating machinery, including steam turbines, compressors, generators, and pumps. Its tilting pads form a hydrodynamic...read more -
![Pedestal Pad Thrust Bearing]()
Pedestal Pad Thrust BearingPedestal Pad Thrust Bearing is a fluid film bearing designed to support axial loads and maintain the axial position of rotating shafts. Its pedestal-mounted structure accommodates...read more -
![Babbitt Combination Bearing]()
Babbitt Combination BearingBabbitt Combination Bearing integrates journal and thrust bearing functions in one assembly for rotating equipment requiring both radial and axial load support. It is supplied for new equipment...read more
Profiled-Bore Journal Bearings
Plain cylindrical, lemon-bore, offset-half and multi-lobe profiles are available for applications requiring specific rotor stability and oil-film characteristics.
Tilting Pad Journal Bearings
Tilting pad journal bearings use independently moving pads to support high-speed rotors where stability and low cross-coupling are required.
Hydrodynamic Thrust Bearings
Fixed taper-land and tilting pad designs are available, with equalizing or non-equalizing arrangements selected according to the bearing load and application.
Combination Bearings
Journal and thrust functions can be integrated into one bearing assembly. Non-circular, spherical and temperature-probe configurations are available.
Lubrication & Temperature Monitoring
Oil grooves, directional lubrication features, inlet/outlet ports and oil holes can be configured to match the lubrication system. Provisions for duplex RTDs or thermocouples can also be machined where required.
Fluid Film Bearing Types & Configurations
|
Bearing Category |
Products |
Main Function |
|
Journal Bearings |
Journal Bearing; Flanged Steel Sleeve Bearing; Plain Journal Fluid Film Bearing; Babbitt Flanged Bearing; Babbitt Bearing; Sleeve Babbitt Bearing |
Radial load support |
|
Journal & Thrust Bearings |
Journal Thrust Bearing |
Combined radial and axial load support |
|
Thrust Bearings |
Fluid Film Thrust Bearing; Taper-land Thrust Bearing; Tin Bronze Thrust Bearing; Pad Thrust Bearing; Tilting Pad Thrust Bearing; Tilting Pad Thrust Bearing Assembly; Pedestal Pad Thrust Bearing |
Axial load support |
|
Combination Bearings |
Babbitt Combination Bearing; Non-circular Combination Bearing; Temperature Probe Combination Bearing; Spherical Combination Bearing |
Combined radial and axial load support |
Technical Specifications
The following values represent a typical hydrodynamic journal bearing production sample.
|
Parameter |
Typical Specification |
|
Bearing Type |
Hydrodynamic Journal Bearing |
|
Bore Diameter |
3.2500 in (82.55 mm) |
|
Housing O.D. |
5.0000 in (127.00 mm) |
|
Bearing Total Width |
3.5000 in (88.90 mm) |
|
Babbitt Lining Thickness |
0.0400 in (1.016 mm) |
|
Inner Chamfer / Fillet |
0.1220 in (3.10 mm) |
|
Outer Chamfer / Fillet |
0.0591 in (1.50 mm) |
|
Bearing Weight |
8.82 lb (4.00 kg) |
|
Max. Allowable Load |
47,435 lb (211 kN) |
|
Babbitt Bore Clearance |
0.0035 in (0.089 mm) |
|
Oil Hole Diameter |
0.3752 in (9.53 mm) |
Fluid Film Bearing Selection Guide
For quotation and engineering review, provide the following information where available:
Bearing Information
Bearing type, bore diameter, outside diameter, width, split configuration, mounting dimensions and existing drawings.
01
Operating Conditions
Operating speed, static and dynamic loads, rotor information and equipment type.
02
Lubrication
Oil grade, viscosity, lubrication method and oil supply arrangement, including inlet and outlet requirements.
03
Existing Bearing Information
For replacement or reverse engineering, provide the OEM drawing, specification sheet, part number, inspection dimensions or worn bearing sample.
04
Special Requirements
Material, clearance, oil groove design, temperature probes, inspection requirements, documentation and applicable project standards.
05
Materials & Lubrication
Materials, clearances and lubrication features are selected according to the bearing design and operating conditions.
|
Material / Feature |
Available Configuration |
|
Babbitt Lining |
ASTM B23 Grade 2 tin-based Babbitt; Grade 7/8 lead-based alloys |
|
Backing Material |
Carbon steel such as AISI 1020/1045; Cr-Mo alloy steel; bronze |
|
Bearing Structure |
Journal, thrust, split sleeve, tilting pad and combination configurations |
|
Oil Grooves |
Customized groove geometry and directional lubrication features |
|
Oil Ports |
Customized inlet, outlet and oil-hole dimensions |
|
Temperature Monitoring |
Provisions for duplex RTDs or thermocouples |
Applications & Operating Conditions
Fluid film bearings are used in rotating equipment requiring radial, axial or combined load support through an oil-film bearing system.
Power Generation
Steam turbines, gas turbines, hydro-generators, boiler feed pumps and synchronous condensers.
Oil & Gas / Petrochemical
API 617 turbo-compressors, high-pressure process pumps, centrifugal blowers and pipeline pumps.
Marine Engineering
Main propulsion shaft bearings, marine turbochargers and turbo-generator sets.
Heavy Industry
High-speed gearbox shafts, mining mills, cement kilns and large industrial fans or blowers.
High-Speed Rotating Equipment
Profiled-bore and tilting pad designs are available for applications where rotor stability and oil-film behavior are critical.
OEM Replacement & Reverse Engineering
Drawing-Based Manufacturing
Custom fluid film bearings can be manufactured from 2D drawings, 3D CAD models or approved specifications, with dimensions, materials and clearances defined by project requirements.
OEM Replacement
Replacement bearings can be produced using OEM part numbers, drawings or equipment information for compatible equipment from manufacturers such as GE, Siemens, Elliott, Mitsubishi, Sulzer, ABB and WEG. Compatibility is confirmed through technical review.
Reverse Engineering
When original drawings are unavailable, worn or damaged bearings can be measured and evaluated to develop a replacement design, subject to the condition of the sample and available technical information.
Single-Set & Emergency Replacement
Single-set replacement and prototype orders are accepted without a strict MOQ. Expedited production can be evaluated according to design complexity, material availability and inspection requirements.
Manufacturing Process
Engineering Review
Customer drawings, CAD models, specifications and operating data are reviewed to confirm design requirements before production.
Babbitt Bonding
Centrifugal casting is used for cylindrical bearing shells. Gravity pouring with controlled pre-tinning can be used for suitable flat bearing pads.
CNC Machining & Grinding
CNC machining, boring and grinding are used to achieve the specified bearing geometry, fits and critical dimensions.
Packing & Export
Finished bearings receive rust-preventive treatment, protective polymer packaging and heavy non-fumigation wooden crating for export shipment.
Quality Control
Babbitt-to-Steel Bonding
Ultrasonic testing (UT) can be performed to assess the Babbitt-to-steel bond according to applicable inspection requirements.
Dimensional Inspection
CMM and other dimensional inspection methods are used to verify bore diameter, outside diameter, width, clearances and other specified dimensions.
Surface Inspection
Liquid penetrant testing (PT) can be performed to identify relevant surface-breaking defects where applicable.
Babbitt Alloy Analysis
Optical emission spectroscopy is used to verify Babbitt alloy chemical composition. Material test records can be provided according to project requirements.
Standards & Documentation
Quality Management
ISO 9001:2015: Quality management certification for manufacturing operations.
Applicable Technical Standards
|
Standard |
Application |
|
API 617 |
Centrifugal and axial compressors |
|
API 612 |
Steam turbines |
|
API 684 |
Rotor dynamics and stability |
|
ISO 4386 / ASTM E114 |
NDT of metallic multilayer plain bearings |
Inspection & Manufacturing Documents
Dimensional inspection reports, UT/PT reports, material certificates, Babbitt alloy test records and Certificates of Conformity can be supplied according to project requirements.
Third-Party Inspection
Customer-appointed inspectors and third-party agencies such as SGS, BV, or TÜV can witness agreed inspection points, dimensional checks, and UT/PT testing before shipment.
FAQ
We are one of the most professional fluid film bearings manufacturers and suppliers in China. With abundant experience, we warmly welcome you to buy customized fluid film bearings at competitive price from our factory. If you have any enquiry about free sample, please feel free to email us.