Custom Iron Bearing Bushing Manufacturer– Focus On Non-Standard Bearings
Iron bearing bushing product advantages
Iron-based bearing bushings can adapt to various working conditions while taking into account performance and cost, becoming an indispensable basic component in mechanical transmission.
Strong bearing capacity
The iron matrix itself has high strength, and after being processed by powder metallurgy, the material structure is dense.
Excellent self-lubricating properties
The pores retained during the manufacturing process embed solid lubricants such as graphite.
High cost-effectiveness
Using iron powder as the primary raw material, the powder metallurgy process is suitable for mass production, effectively reducing manufacturing costs.
Moderate and stable wear resistance
The iron matrix combined with additives such as graphite ensures stable performance in medium- and low-speed environments and non-extreme wear.
Good thermal conductivity
Iron has a higher thermal conductivity than non-metallic bearings, quickly dissipating heat generated by friction.
Excellent machinability
The sintered green body has a moderate hardness, making it easy to perform subsequent machining such as turning and drilling.
Material types of iron-based bearing bushings
Steel-based bushings
Based on low-carbon steel or alloy steel (usually with a carbon content of less than 2%), the performance is enhanced by heat treatment or surface treatment, and the strength and toughness are better than cast iron.
| Performance index | Data |
|---|---|
| Basic Hardness | HRC58 - 60 |
| Friction coef (u) | < 0.17 |
| Temperature limit | 350℃ |
| PV limit | 2.5N/mm²·m/s |
| Dynamic load limit | 250N/mm² |
| Speed limit | 0.1m/s |
Cast Iron Bushings
Cast iron is the most common type of iron-based bushing. Characterized by a high carbon content (above 2%) and a unique metallographic structure, it is relatively brittle but offers excellent wear resistance and low cost.
| Performance index | Data |
|---|---|
| Basic Hardness | HB80 - 230 |
| Friction coef (u) | < 0.18 |
| Temperature limit | 400℃ |
| PV limit | 0.8N/mm²·m/s |
| Dynamic load limit | 60N/mm² |
| Speed limit | 0.5m/s |
Other Iron-Based Composite Bushings
Using iron as the base material, these bushings are composited with other materials to enhance performance, while maintaining the strength and special functions of the iron base.
| Performance index | Data |
|---|---|
| Basic Hardness | HB60 - 90 |
| Friction coefficient | < 0.16 |
| Temperature limit | 300℃ |
| PV limit | 1.6N/mm²·m/s |
| Dynamic load limit | 70N/mm² |
| Speed limit | 0.5m/s |
Why Choose Us
Our Company
Jiande Wellfy Technology Co., Ltd. is a bushing manufacturer that has been focusing on powder metallurgy products for more than 20 years. As a national high-tech enterprise, the company actively carries out scientific research and development and production and manufacturing, and is committed to providing customers with high-quality products and services.
As a professional bronze bushing supplier, our technical department has brought together a highly qualified and experienced professional team, including senior engineers, technicians, quality inspectors and other senior technical consultants, to provide all-round support in product development, process optimization and quality control to ensure that technological innovation and product quality continue to lead.
Our Factory
We are a professional bushing manufacturing factory with a high-standard factory building of 14,000 square meters, equipped with 20 high-efficiency presses, 4 high-temperature sintering furnaces, 15 precision molding machines, and thousands of high-quality molds, which can meet various high-difficulty processing needs, ensure the production of high-precision parts, and significantly improve production efficiency.
With advanced production technology and complete equipment, the factory has stable and efficient production capacity, and can produce bronze bushings, bearing bushings, gears and other products. Among them, bearing bushings include self-lubricating bushings, flange bushings, threaded bushings and other types. Bronze bushings include graphite bronze bushings, phosphor bronze bushings, aluminum bronze bushings, phosphor bronze bushings, tin bronze bushings, etc., which can meet the customization needs of different customers.
Product Customization Options
Custom bearing bushings for your needs
Customization of materials and components
Materials:
●Cast Iron Types: Gray Iron (Low-Cost, Light-Duty), Ductile Iron (Medium- to High-Duty), Malleable Iron (Impact Resistance).
●Sintered Iron Base: Adjust iron powder purity, alloying elements (copper/graphite/molybdenum), and porosity.
●Composite Structure: Steel backing and anti-friction layer (copper alloy/babbitt).
Component Combinations：
●With retaining rings/seals/locating pins (complex assembly).
Size and structure customization
Dimensions:
●Basic dimensions: Outer diameter φ10mm-φ500mm+, length 5mm-500mm+.
●Special sizes: Thin-wall (0.5-3mm, lightweight), thick-wall (>10mm, high-load).
Structure:
●Basic forms: Cylindrical, flange (axial positioning), stepped (adaptable to variable ●diameter shafts).
●Functional features: Oil grooves/holes (oil storage and guidance), slots (to prevent ●thermal expansion and seizure), and special-shaped holes (to prevent rotation).
Customization of performance and surface treatment
Performance:
●Mechanical Properties: Adjustable hardness, strength, and toughness.
●Environmental Adaptability: Heat resistance, corrosion resistance, and low wear rate.
Surface Treatment:
●Lubrication Enhancement: Sprayed MoS₂/PTFE coating, impregnated with special lubricant.
●Rust and Corrosion Resistance: Phosphating, zinc plating/chrome plating/Dacromet coating.
●Hardening: Case hardening, carburizing/nitriding.
Customization of precision and tolerance
Precision level:
●Tolerance: IT5-IT6 (high precision), IT7-IT8 (medium precision), IT9-IT11 (low precision).
●Geometric tolerance: roundness ≤0.005-0.02mm, coaxiality ≤0.01-0.05mm, surface roughness Ra0.4-6.3μm (inner hole/outer circle).
Special tolerance：
●The clearance is determined according to the matching type, and the clearance is enlarged to prevent jamming under high temperature conditions.
Application industries of iron-based bearing bushings
Machine Tool Equipment Industry
Machine tools require extremely high machining precision, so iron-based bushings must meet requirements such as low friction and high dimensional stability. The spindle bushing forms a transition fit with the spindle through a precision-ground inner bore to reduce vibration during high-speed rotation.
Agricultural Machinery Industry
Agricultural machinery operates in a dusty environment with poor lubrication conditions and large load fluctuations. Iron-based bushings are mostly made of gray cast iron or low-cost steel-based bushings, which are suitable for mass production due to their low manufacturing cost.
Engineering Machinery Industry
Construction machinery works outdoors for a long time, facing high load, strong impact, dust, wet and muddy working conditions. Iron-based bushings can stably support the relative rotation of hinged parts with high compressive strength and wear resistance.
Honor and qualification
Quality management system certification
environmental management system certification
OHS Management System Certification
Zhejiang Manufacturing Certification
Quality Management System Certification
Frequently Asked Questions
What are the main types of materials for your iron-based bearing bushings?
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Mainly gray cast iron, ductile iron, sintered iron-based alloy and steel-based composite bushings.
Can bushings of special size and structure be customized according to our equipment drawings?
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Yes. We are a bushing supplier that supports full-size customization (outer diameter φ10mm-φ500mm+, wall thickness 0.5mm-50mm). We can customize flanges, steps, split forms, axial/spiral oil grooves, special-shaped holes, etc. in structure. Detailed drawings (including tolerance requirements) are required, and samples can generally be produced within 7-15 days.
How is the wear resistance of the bushing guaranteed?
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Wear resistance is guaranteed by material optimization and process enhancement.
How long can the lubrication effect of self-lubricating iron-based bushings last?
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304 stainless steel meets the international requirements of food grade,316 stainless steel is not only food grade or medical grade. However,the use of this medical grade as a production cup will not bring additional benefits to everyone. Why is it called 304 or 316? This is mainly defined according to the material composition. 316 stainless steel is not similar to mineral materials,after use can release some substances to promote human absorption.
How do I get access to a theme l purchased?
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Sintered iron-based self-lubricating bushings store oil through pores and can be maintenance-free for 6-12 months at low speed and light load; if graphite inlays are added, the life span is extended to 8-18 months in high temperature environments.
What precautions should be taken when installing the bushing?
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During installation, the shaft and bushing must be concentric. Interference fit requires press-in method, and clearance fit requires grease.
Can it be adapted to high temperature or corrosive environments?
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High temperature bushings can be customized with a temperature resistance of -50°C-300°C; surface phosphating or galvanizing/chrome plating can be selected for corrosive environments, and stainless steel composite structures can be used to meet the needs of chemical and marine equipment.
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