Journal 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 customer drawings, existing bearing dimensions, or application-specific specifications.
Technical Specifications
|
Parameter |
Specification |
|
Product Type |
Journal Bearing |
|
Bearing Type |
Sliding Bearing |
|
Lubrication |
Oil Lubricated |
|
Load Type |
Radial Load |
|
Shell Materials |
Carbon Steel, Cast Steel, Bronze, Stainless Steel |
|
Lining Materials |
Babbitt Alloy, Bronze, Composite Materials |
|
Lubrication Features |
Oil Groove, Oil Pocket, Oil Hole, Forced Lubrication |
|
Machining |
CNC Precision Machining |
|
Manufacturing Basis |
OEM / Customer Drawing / Sample |
|
Customization |
Dimensions, Materials, Structure, Lubrication Features |
|
Inspection |
Material, Dimensional, Babbitt Bonding, Customized Testing |
Bearing Structure & Materials
Bearing Shell
The bearing shell provides the structural support for the bearing assembly and maintains the required dimensions during operation. Available shell materials include carbon steel, cast steel, bronze, and stainless steel.
Sliding Lining
Babbitt alloy can be used as the sliding layer between the shaft and bearing shell. Bronze and composite materials are also available for specified bearing designs.
Lubrication Structure
The lubrication arrangement can include oil grooves, oil pockets, oil holes, or forced lubrication systems. The configuration is determined by the bearing design and operating conditions.
Applications
Steam Turbines & Generators
Radial shaft support for rotors in large power-generation equipment.
Compressors
High-speed rotating equipment with oil-film lubrication systems.
Industrial Motors
Large electric motors and other industrial rotating equipment requiring shaft support.
Pumps
Industrial pump systems requiring continuous shaft support and oil lubrication.
Marine Equipment
Marine propulsion systems and other rotating machinery.
Custom Journal Bearing & Replacement Service
Drawing-Based Production
Journal bearings can be manufactured from customer drawings, models, or technical specifications, including specified dimensions, materials, and structural requirements.
Sample-Based Replacement
Existing or worn bearings can be used as references for replacement production when original drawings are unavailable. Dimensional measurement and sample analysis can be used to establish the required manufacturing information.
Bearing Design & Material Selection
For customized requirements, bearing materials and structural details can be considered together with equipment rotational speed, load, and lubrication conditions.
Quality Control & Documents
Material Verification
Bearing shell and lining materials are verified against the specified material grade and chemical composition. Material certificates can be supplied when required.
Dimensional Inspection
Inner diameter, outer diameter, bearing width, wall thickness, oil groove dimensions, and other drawing-defined tolerances are inspected during machining and final inspection.
Babbitt Bonding Inspection
For Babbitt-lined bearings, the bond between the Babbitt layer and bearing shell is inspected to identify bonding defects that could affect bearing integrity.
Final Inspection
Bearing surface condition, machining quality, critical dimensions, and specified technical requirements are checked before shipment. Inspection reports can be provided according to order requirements.
Packaging & Delivery
Surface Protection
Machined and bearing surfaces are protected against impact, contamination, and corrosion during storage and transportation.
Export Packaging
Bearings are packed according to their size, weight, and shipping requirements. Wooden cases, pallets, and other suitable export packing methods are available.
FAQ
Q: What information should I provide when requesting a quotation?
A: A drawing or sample, required quantity, application, material requirements, and delivery destination are recommended.
Q: What is the typical lead time?
A: Lead time depends on the bearing specifications, materials, quantity, machining requirements, and inspection requirements. A confirmed lead time is provided with the quotation.
Q: Is there a minimum order quantity?
A: MOQ depends on the bearing type, material, and production requirements. Small-batch and replacement orders can be evaluated.
Q: Can you support repeat orders based on previous specifications?
A: Yes. Previous drawings, specifications, and production records can be used as references for repeat orders.
Q: Can inspection documents be supplied with the order?
A: Yes. Material certificates, dimensional inspection reports, and other agreed inspection documents can be supplied according to order requirements.
Q: Can spare bearings be supplied for planned maintenance?
A: Yes. Additional bearings can be supplied as spare parts for planned maintenance and future replacement requirements.
Q: Can an existing bearing be used for replacement production?
A: Yes. An existing bearing can be evaluated as a dimensional and specification reference when original drawings are unavailable.
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