Product Overview
Steel bushings are critical components widely used in various machinery, reducing friction, distributing loads, and absorbing vibrations to extend equipment lifespan. As part of self-lubricating bearings, steel bushings are ideal for applications involving high loads, high friction, and heavy impacts. We offer two main types of steel bushings: Seamless Steel Bushings and Spring Steel Bushings, designed to suit different industrial environments.
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Bushing Material
Choosing a bushing’s material is primarily selecting three layers – the metal base, intermediate layer, and the surface layer or self-lubricating layer on bushings.
Material Analysis
1. Carbon Steel
- Advantages:
- High strength and good wear resistance at a relatively low cost.
- Can be enhanced with zinc plating or phosphating to improve corrosion resistance.
- Applications: Suitable for general industrial environments and medium-load conditions, such as agricultural machinery and light-duty equipment.
2. Alloy Steel
- Advantages:
- Contains chromium, nickel, molybdenum, and other alloy elements for better impact resistance and wear resistance.
- After heat treatment, it offers superior fatigue resistance, making it suitable for high-load and high-impact conditions.
- Applications: Ideal for heavy machinery, mining equipment, and high-pressure pumps in harsh environments.
3. Stainless Steel
- Advantages:
- Excellent corrosion and oxidation resistance, maintaining stability in humid or chemically corrosive environments.
- Long-term corrosion protection without additional surface treatment.
- Applications: Used in food processing equipment, chemical equipment, and marine industries requiring high corrosion resistance.
4. High Elasticity Alloy Steel
- Advantages:
- Offers high elasticity and fatigue resistance, suitable for high-frequency vibration and impact conditions.
- After heat treatment, it provides superior elastic recovery and wear resistance.
- Applications: Primarily used for spring steel bushings, suited for vibration equipment, automotive suspension systems, and textile machinery.
To ensure optimal performance in different industrial environments, we provide various structural designs for steel bushings:
| Material:65Mn | ||||||
| Element | C | Si | Mn | Cr | Fe | |
| Composition(%) | 0.62～0.70 | 0.17～0.37 | 0.70～1.00 | ≤0.25 | Remainder | |
| Characteristics | ||||||
| Hardness | HRC42～48 | |||||
| Max.Static Load | 650N/mm² | |||||
| Max.Dynamic Load | 100N/mm² | |||||
| Max.Speed | 0.1m/s | |||||
| Max.Temperature | 200℃ | |||||
| Friction Coefficient(oil) | ≤0.18 | |||||
Bushing Size
| d | D | D1 | O.D. | I.D | Housing Bore | Shaft | T1 | f 12 | 20 | 25 | 30 | 40 | 50 | 60 | 80 | 90 | 100 | |
| 32 | 40 | +1.5 +0.5 | 40+0.062 | 32 +0.16 | 40 +0.039 | 32 | -0.025 -0.064 | 2.2 | 1 | △ | △ | △ | △ | △ | △ | |||
| 35 | 44 | +2.3 +0.8 | 44 +0.062 | 35 +0.16 | 44+0.039 | 35 | -0.025 -0.064 | 2.2 | 1 | △ | △ | △ | △ | △ | △ | |||
| 36 | 45 | +2.3 +0.8 | 45 +0.062 | 36 +0.16 | 45 +0.03g | 36 | -0.025 -0.064 | 2.2 | 1 | △ | △ | △ | △ | △ | △ | |||
| 38 | 48 | +2.3 +0.8 | 48+0.062 | 38 +0.16 | 48 +0.039 | 38 | -0.025 -0.064 | 2.2 | 1 | △ | △ | △ | △ | △ | △ | |||
| 40 | 50 | +2.3 +0.8 | 50+0.062 | 40 +0.16 | 50+0.039 | 40 | -0.025 -0.064 | 2.6 | 1 | △ | △ | △ | △ | △ | △ | |||
| 45 | 55 | +2.3 +0.8 | 55+0.074 | 45 +0.16 | 55 +0.046 | 45 | -0.025 -0.064 | 2.6 | 1 | △ | △ | △ | △ | △ | △ | |||
| 55 | 65 | +2.3 +0.8 | 65 +0.074 | 55 +0.19 | 65 +0.046 | 55 | -0.03 -0.076 | 2.6 | 1 | △ | △ | △ | △ | △ | △ | |||
| 65 | 75 | +3.0 +1.0 | 75 +0.074 | 65 +0.19 | 75 +0.046 | 65 | -0.03 -0.076 | 2.6 | 1 | △ | △ | △ | △ | △ | △ | |||
| 75 | 85 | +3.0 +1.0 | 85 +0.087 | 75 +0.19 | 85 +0.054 | 75 | -0.03 -0.076 | 3.2 | 1 | △ | △ | △ | △ | △ | ||||
| 85 | 95 | +3.0 +1.0 | 95 +0.087 | 85 +0.22 | 95 +0.054 | 85 | -0.036 -0.09 | 3.2 | 1 | △ | △ | △ | △ | △ | ||||
| 90 | 100 | +3.0 +1.0 | 100+0.087 | 90 +0.22 | 100+0.054 | 90 | -0.036 -0.09 | 3.2 | 1 | △ | △ | △ | △ | △ | ||||
| 100 | 115 | +3.0 +1.0 | 115+0.087 | 100+0.22 | 115+0.054 | 100 | -0.036 -0.09 | 3.2 | 1 | △ | △ | △ | △ | △ | ||||
| 105 | 115 | +3.0 +1.0 | 115+0.087 | 105 +0.22 | 115+0.054 | 105 | -0.036 -0.09 | 3.2 | 1 | △ | △ | △ | △ | △ |
| d | D | D1 | O.D. | I.D | Housing Bore | Shaft | f 12 | 20 | 25 | 30 | 40 | 50 | 60 | 80 | 90 | 100 | |
| 32 | 36 | +1.5 +0.5 | 36+0.062 | 32 +0.16 | 36 +0.039 | 32 | -0.025 -0.064 | 0.8 | △ | △ | △ | △ | △ | ||||
| 35 | 39 | +2.3 +0.8 | 39 +0.062 | 35 +0.16 | 39 +0.039 | 35 | -0.025 -0.064 | 0.8 | △ | △ | △ | △ | △ | ||||
| 40 | 45 | +2.3 +0.8 | 45+0.062 | 40 +0.16 | 45+0.039 | 40 | -0.025 -0.064 | 1.1 | △ | △ | △ | △ | △ | ||||
| 45 | 50 | +2.3 +0.8 | 50+0.062 | 45 +0.16 | 50 +0.039 | 45 | -0.025 -0.064 | 1.1 | △ | △ | △ | △ | △ | ||||
| 55 | 60 | +2.3 +0.8 | 60 +0.074 | 55 +0.19 | 60 +0.046 | 55 | -0.03 -0.076 | 1.1 | △ | △ | △ | △ | △ | △ | |||
| 60 | 65 | +3.0 +1.0 | 65 +0.074 | 60 +0.19 | 65 +0.046 | 60 | -0.03 -0.076 | 1.1 | △ | △ | △ | △ | △ | ||||
| 70 | 76 | +3.0 +1.0 | 76 +0.087 | 70 +0.19 | 76 +0.046 | 70 | -0.03 -0.073 | 1.3 | △ | △ | △ | △ | △ | ||||
| 80 | 85 | +3.0 +1.0 | 85 +0.087 | 80 +0.19 | 85 +0.054 | 85 | -0.03 -0.076 | 1.1 | △ | △ | △ | △ | △ | ||||
| 80 | 86 | +3.0 +1.0 | 86+0.087 | 80 +0.19 | 86+0.054 | 80 | -0.036 -0.76 | 1.3 | △ | △ | △ | △ | △ |
Product Specifications & Parameters
We offer a wide range of steel bushing sizes to meet various equipment requirements. Here are common specifications:
| Specification | Seamless Steel Bushing | Spring Steel Bushing |
|---|---|---|
| Outer Diameter | 10mm – 200mm | 10mm – 150mm |
| Inner Diameter | 5mm – 190mm | 5mm – 140mm |
| Length | 20mm – 500mm | 20mm – 400mm |
| Wall Thickness | 1mm – 20mm | 0.5mm – 5mm |
| Hardness | HRC 50 – 60 | HRC 40 – 50 |
| Load Capacity | 2000 N/mm² | 1500 N/mm² |
| Operating Temp | -40°C to 250°C | -20°C to 200°C |
| Tolerance | ±0.01mm | ±0.02mm |
Bushing Shape
Seamless Steel Bushing
- Material: Made of high-quality carbon steel, alloy steel, or stainless steel, providing high strength and wear resistance.
- Features:
- High precision, stable structure, suitable for high-load and high-pressure applications.
- Available with various surface treatments (e.g., chrome plating, zinc plating, phosphating) to enhance wear resistance and corrosion protection.
- Solid structure design with strong adaptability, ensuring stable performance in harsh environments.
- Applications: Engineering machinery (e.g., excavators, bulldozers), mining equipment, heavy-duty conveyors, and automotive industries (engines, transmissions, suspension systems).
| Malerial | 45、40Crect. |
| Hardness | 40~46HRC |
| Heat treatment | Overall quenchodinnet surtace can)sphatized |
| Friction coefficlent | <0.17 |
| Max temperature | 350℃ |
| Max load capacity | 250KN/mm² |
Spring Steel Bushing
- Material: Made of high-elasticity alloy steel, providing excellent elasticity and shock absorption.
- Features:
- Self-locking function reduces loosening risks during installation, requiring no additional fixation.
- The inner wall is specially treated to enhance wear resistance while absorbing vibration and impact during operation.
- Ideal for applications involving high vibration and slight displacement, effectively protecting equipment from excessive impact.
- Applications: Automotive suspension systems, damping equipment, textile machinery, conveyors, and other equipment requiring flexible installation and shock absorption.
- Features:
Performance Testing & Certification
Our steel bushings undergo rigorous performance tests to ensure stability and reliability in various industrial applications:
- Wear Resistance Test: Simulates high-load and high-speed conditions, demonstrating excellent wear performance.
- Load Capacity Test: Ensures stable performance under high-pressure and high-impact conditions.
- Fatigue Test: Confirms the stability of steel bushings during prolonged operations, extending equipment lifespan.
- Product Certification: All steel bushings comply with ISO 9001 quality management standards and RoHS regulations, ensuring safety and environmental compliance.
1、With wave shape split,springsteel bushing has self-adaptability for housing whenassembling,low requirement for housing dimension,which can lower the equipmentcost.
2、Easy for assembling with elasticity of bushing itself.
3、Good performance in anti-wear and long life with its high hardness.
4、Its highstrength spring steel material can stand heavier load and adapt to badworking conditions including slow speed andheavy load.
5、When the shaftis working,the bushing can adjust itsposition ifthe friction force is
big.The equipment can be protected from been damaged by the bushing’s goodanti-occlude performance with the shaft.
Calculation Of Load P
F: working load (unit):N
A: (the projected area of the bearing (unit):mm2
d: I.D.ofbearing (unit):mm
L: Length of Bearing (unit):mm
P: Dynamic Load (unit):N/mm2
Calculation of Load P : P=F/A=F/(d*L)
Bushing Applications
The multilayer design gives it a lot of wear resistance and the ability to run without maintenance for a long time with a reasonable load capacity. This design is best in applications with high loads and medium to lower speeds.
The Metal Polymer Self Lubricating Bushing is a versatile solution for numerous industries and is commonly used in:
- Automotive: Suspension systems, steering mechanisms, and brake systems
- Industrial Machinery: Heavy equipment, hydraulic cylinders, and presses
- Agricultural Equipment: Tractors, harvesters, and tillers
- Office and Home Appliances: Hinges, sliding mechanisms, and fitness equipment
- Aerospace: Landing gear and control systems
Combine Harvester
Crane
Bulldozer
Loader
Graders
Automobile
Truck
Tractor
Dump Truck
Excavator
Custom Services and Solutions
Personalized Design Support
We understand that each customer’s needs may vary, which is why we offer customized solutions tailored to different equipment applications. We provideself-lubricating bushings in specific sizes, materials, and thicknesses to match your unique requirements. No matter what industry or application your equipment is used in, we can offer the optimal product selection to meet your needs.
Free consultation
Communicate with us to clarify the requirements
Free design
Customize your product according to your needs
Sample making
Confirm the drawings and arrange for sampling
Sample confirmation
Customer confirms sample and arranges production
Finished inspection
Inspect the finished product and arrange for shipment
FaQ
Are you a factory？
Of course, we are a manufacturer that can complete the entire production line from raw materials to finished bushing products.
What bushings do you production?
We mainly produce various self-lubricating bushings. Please refer to our product solutions or contact us for details
What is a bushing?
What is the general process for manufacturing bushings?
Bushing manufacturing involves several key steps:
Material Selection: Choosing the appropriate material such as bronze, rubber, or plastic, depending on the application.
Forming: Techniques like casting, pressing, or extrusion are used to shape the raw material into a bushing.
Heat Treatment: For metal bushings, heat treatment is applied to increase strength and wear resistance.
Finishing: This step involves precision machining to achieve the required dimensional tolerances and surface finish.
Surface Treatment: A coating may be applied for corrosion resistance or lubrication purposes, such as zinc plating or Teflon coating.
What materials are commonly used in bushing production?
Common materials used in bushings include:
Bronze: Known for its durability and low friction, often used in heavy-duty applications.
Rubber: Used for vibration dampening in automotive and machinery applications.
Nylon/Polymer (like PTFE): Provides self-lubrication and is ideal for low-load, low-friction environments.
Steel: Used for high-load applications, often combined with a softer material like bronze or plastic as the lining.
How are bushing dimensions and tolerances maintained during production?
What surface treatments are used for bushings?
Bushings often undergo surface treatments to enhance their properties:
Zinc or nickel plating: Protects the metal surface from corrosion.
Teflon (PTFE) coatings: Provide low friction and self-lubricating properties.
Phosphating or black oxide coating: Improve wear resistance and reduce the potential for galling (severe adhesion between surfaces in motion).
What are the challenges in bushing production?
Key challenges include:
Maintaining precision: Ensuring dimensional accuracy across large production runs can be difficult, especially for complex shapes.
Material selection: Using the wrong material could result in failure under stress or environmental conditions.
Surface finish quality: Achieving smooth surface finishes is crucial to reducing friction and wear.
Can bushings be custom-made?
What environmental factors are considered in bushing production?
Manufacturers consider several environmental aspects:
Material sustainability: Using eco-friendly or recyclable materials.
Waste management: Minimizing production waste and properly handling hazardous materials.
Energy consumption: Optimizing energy use in production processes to reduce carbon footprint.
What is the purpose of a bushing?
How can I tell when a bushing needs to be replaced?
Signs that a bushing may need replacement include:
Cracks, splits, or visible damage.
Increased noise, such as squeaking or grinding.
Excessive play or movement in the component where the bushing is installed.
Vibration or instability in the machinery or equipment.
How do I maintain bushings?
What is the difference between a bushing and a bearing?
How long do bushings last?
More Related Bushing products
Contact Us for More Information
We not only provide high-quality self-lubricating bushings but also offer comprehensive technical support and after-sales service to ensure your equipment always operates at peak performance. If you have any questions or need a quote, please feel free to contact us at any time.
Tel/Whatsapp： +86 136 4583 4002
Email：myway@mybushing.com
