Steel Plain Bearings
Steel Plain Bearings
Discover our plain bearings: Flange bearings, sleeve bushings, and thrust washers. Customizable bushing materials available. Our products are wear-resistant, maintenance-free, and designed to withstand dirt, dust, and corrosion.
C45 Hardened Steel Bushings: The Resilient Choice for Heavy Machinery
C45 hardened steel bushings are widely used industrial components in heavy machinery such as excavators, loaders, and cranes. This high-carbon steel, after undergoing a special heat treatment process, not only possesses excellent hardness and wear resistance but also the ability to withstand high loads and harsh working environments.
Materials and Hardness
C45 steel is the primary material used to manufacture bushings. After hardening treatment, its hardness can reach 56-62 HRC (Rockwell Hardness Scale C), making them highly suitable for bearing high loads and abrasion. Additionally, other materials can be used to produce bushings based on specific application requirements.
Lubrication and Design
Due to their high hardness, C45 hardened steel bushings require regular lubrication to reduce friction and wear, thereby extending their service life. It is recommended to lubricate them daily or at most weekly. The design of the bushings can also be customized according to customer requirements, featuring different types of internal grooves that aid in the distribution of lubricants and the removal of abrasive particles.
Technical Parameters
- Maximum dynamic load: 150 MPa
- Temperature range: -100°C to 300°C
- Maximum sliding speed: 0.17 m/s
- Maximum PV value (pressure-velocity product): 1.2 m/s*MPa
Applications and Advantages
C45 quenched steel bushings are widely used in excavators, loaders, cranes, and other heavy machinery due to their high load-bearing capacity and wear resistance. Compared to other materials, the advantages of C45 hardened steel bushings include cost savings and high load-bearing capacity, making them highly popular in industrial applications.However, due to their high hardness, C45 hardened steel bushings require proper maintenance and lubrication to maintain optimal performance. Regular inspections and maintenance can ensure that these bushings perform at their excellent in harsh working environments, providing reliable support for heavy machinery.In conclusion, C45 hardened steel bushings, with their exceptional hardness, wear resistance, and high load-bearing capacity, have become the material of choice in the heavy machinery industry. Through rational design and proper maintenance, these bushings can provide long-term reliable service for mechanical equipment.
Application
C45 Hardened steel bushing is widely used for excavator,loader,crane and etc
Technical Data
| Materail | C45 Steel |
| Max Dynamic Load(Mpa) | 150 |
| Max Temperature | -100-300°C |
| Max Sliding Speed(m/s) | 0.17 |
| Max PV Value(m/s*Mpa | 1.2 |
| Hardness | 56-62 HRC |
C45 steel is a widely recognized medium carbon steel that adheres to various international standards. Here are the key code standards associated with C45 steel:
Standards and Designations
- DIN Standards:
- DIN 1.0503: This is the designation for C45 steel under the German DIN standard. It specifies the chemical composition and mechanical properties of the steel.
- DIN 17006: This standard outlines the designation method for steel grades, including C45, based on tensile strength and chemical composition.
- European Standards:
- EN 10083-2: C45 falls under this European standard which defines the technical delivery conditions for non-alloyed carbon steels used for mechanical engineering purposes.
- American Standards:
- AISI 1045: C45 is equivalent to AISI 1045, which is a medium carbon steel commonly used in the United States.
- Japanese Standards:
- JIS G4051 S45C: This is the Japanese equivalent of C45 steel, which shares similar carbon content and properties.
- Australian Standards:
- AS 1442: C45 is also recognized under this standard in Australia, where it is similarly classified as a medium carbon steel.
Chemical Composition
C45 steel typically contains the following elements:
- Carbon (C): 0.42% – 0.50%
- Manganese (Mn): 0.50% – 0.80%
- Silicon (Si): ≤ 0.4%
- Phosphorus (P): ≤ 0.045%
- Sulfur (S): ≤ 0.045%
Mechanical Properties
C45 steel exhibits good mechanical properties, making it suitable for various applications. Typical properties include:
- Tensile Strength: 570 – 700 MPa
- Yield Strength: 330 – 460 MPa
- Elongation: Approximately 20%
Applications
Due to its strength and versatility, C45 steel is used in manufacturing components such as:
- Gears
- Shafts
- Axles
- Connecting rods
- General engineering components
In summary, C45 steel is governed by various standards across different regions, ensuring its quality and consistency for industrial applications. Its chemical composition and mechanical properties make it a reliable choice for manufacturers in need of medium carbon steel.
C45 hardened steel bushings are essential components used in heavy machinery, particularly in excavators, loaders, and cranes. These bushings are specifically designed for the boom of excavators, providing durability and reliability under demanding conditions.
Key Features
- Material: Made from C45 high-carbon steel, these bushings undergo a hardening process that enhances their hardness to between 56-62 HRC. This high hardness level makes them suitable for heavy load applications and ensures excellent wear resistance.
- Customization: Many suppliers provide OEM (Original Equipment Manufacturer) options, allowing for customization based on specific requirements. This includes variations in size and internal design to accommodate different machinery configurations.
Applications
C45 hardened steel bushings are primarily used in the following applications:
- Excavator Boom: These bushings are crucial for the pivot points of excavator booms, where they help facilitate smooth movement and reduce wear on the boom structure.
- Loaders and Cranes: In loaders and cranes, these bushings support various moving parts, ensuring that heavy loads can be handled efficiently without compromising the integrity of the machinery.
Advantages
The use of C45 hardened steel bushings offers several advantages:
- High Load Capacity: Their robust design allows them to handle significant dynamic loads, making them ideal for heavy machinery.
- Cost-Effectiveness: Compared to alternative materials, C45 bushings provide a balance of performance and cost, making them a popular choice in industrial applications.
- Durability: With proper lubrication and maintenance, these bushings can significantly extend the lifespan of machinery components, reducing the frequency of replacements.
In summary, C45 hardened steel bushings are a vital component in the construction and operation of heavy machinery, particularly in excavators, loaders, and cranes. Their high hardness, durability, and ability to withstand heavy loads make them an indispensable choice for manufacturers and operators alike.
Hardened Steel Bearings: Key to Enhanced Wear Resistance and Load Capacity
Hardened steel bearings are components that achieve high hardness through a specialized heat treatment process. This treatment significantly improves the wear resistance and load capacity of the bearings.
Common Hardened Bearing Steels
The most commonly used steel for manufacturing hardened bearings is AISI 52100 or equivalent materials. This is a high-carbon steel (approximately 1.0% carbon) that can achieve very high hardness through martensitic quenching.
Advantages of Hardened Bearings
- Retained Surface Compressive Stress: This characteristic enhances fatigue strength.
- Strong Impact Load Resistance: The bearings can withstand shock loads, and any micro-cracks on the surface are less likely to propagate inward.
- High Surface Hardness with Lower Core Hardness: This combination provides excellent wear resistance while maintaining sufficient toughness.
Requirements for Bearing Steel
Bearing steel must possess high contact fatigue strength, elevated hardness, and wear resistance, along with adequate toughness and hardenability. Additionally, it should exhibit some corrosion resistance in atmospheric and lubricating environments, as well as good machinability.
Alloy materials
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Model / corresponding trademark JDB-1 JDB-2 JDB-3 JDB-4 JDB-2 JDB-2 JDB-22 JDB-23 International brands GB1776-87 ZCuZn25
Al6Fe3Mn3ZCuSn6Zn6Pb3 ZCuAl10Fe3 ZCuSu10P1 Steel+ ZCuSn6Zn6Pb3 HT250 GCr15 International ISO1338 GCuZn25
Al6Fe3Mn3GCuSn6Zn6Pb3 GCuAl10Fe3 – Steel + CuSn6Zn6Pb3
Fe3Ni5– B1 Germany DIN G-CuZn25
Al5GB-CuSn5Zn5Pb5 GB-CuAl10Ni GB-CuSn10 Steel + CuSn6Zn6Pb3Ni – 100Cr6 Japan JIS HBsC4 BC6 AIBC3 BC3 BC6 FC250 SUJ2 American ASTM/UNS C86300 C83600 C95500 C90500 C83600 Class40 52100 British Standard（BS） HTB2 LG2 AB1 PB4 LG2 – –
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