CNC Carbon Steel Eccentric Shafts
Eccentric shafts are key components for transmitting power in mechanical equipment. Their materials must meet requirements for high strength, wear resistance, fatigue resistance, and processability.
Description
Material Selection Criteria for CNC Eccentric Shafts
1. Mechanical Properties: Eccentric shafts are subject to alternating loads and require high tensile strength (typically ≥600 MPa) and fatigue limit (refer to GB/T 3077-2015). For example, the fatigue limit of 40Cr steel is approximately 300 MPa, making it suitable for medium loads.
2. Wear Resistance: Surface hardness must reach HRC 50-60, which can be achieved through quenching or carburizing. For example, 20CrMnTi can achieve a surface hardness of HRC 58-62 after carburizing.
3. Advantages of Carbon Steel (such as 45 Steel): Low price, easy processing, and a tensile strength of up to 800 MPa after quenching and tempering.
Precision CNC machining
CNC manufactured parts
|
DIMENSION |
TOLERANCE |
FLATNESS |
TOLERANCE |
|
0~6 |
±0.05 |
0~30 |
0.05 |
|
>6~30 |
±0.1 |
>30~100 |
0.1 |
|
>30~120 |
±0.15 |
>100~300 |
0.2 |
|
>120~400 |
±0.2 |
>300~1000 |
0.3 |
|
>400~1000 |
±0.3 |
>1000~3000 |
0.4 |
|
>1000~2000 |
±0.5 |
|
|
|
ANGULAR |
|
VERTICALITY |
|
|
(symmetry)0~10 |
±1° |
0~100 |
0.2 |
|
>10~50 |
±30° |
>100~300 |
0.3 |
|
>50~120 |
±20° |
|
SYMMETRY |
|
>120~400 |
±10° |
|
0.5 |
Typical Applications of CNC Eccentric Bushings
1. Precision Mechanical Transmission Systems
CNC machining of eccentric bushings can achieve an eccentricity accuracy of ±0.01mm (data source: Mechanical Design and Manufacturing, 2023). They are widely used in applications requiring dynamic balancing, such as servo motors and robot joints. For example, ABB's industrial robot harmonic reducers use eccentric bushings to control transmission error to within 0.05 arc minutes.
2. Automotive Steering and Suspension Systems
In Electric Power Steering (EPS), eccentric bushings are used to adjust gear mesh clearance. Data from the Volkswagen MQB platform shows that the use of CNC eccentric bushings reduces steering play by 40% and extends service life to 150,000 kilometers (compared to 100,000 kilometers for traditional bushings).
Our Services
FAQ
1. I have a good idea but don't know how to do with it, could you help me?
Yes, please tell us your idea, our engineer will create a drawing for you to check, we can also make a prototype if you need.
Yes, we can produce the parts according your sample and make 2D/3D drawings for you.
Yes, we can assemble all kinds of parts for you. Also can customized the retall package and you can sell it directly after receiving them.
4. Can you protective my business, will my drawing be safe after you get it?
Yes, we can sign the NDA before you send the drawings.
Manufacturing Equipmnet
Surface Treatment
Testing equipment
Manufacturing Flow Chart
about Us
We are a technology-driven CNC machining company specializing in the manufacturing and export of high-value-added precision parts. Our team has over 20 years of industry experience and excels at solving machining challenges for special-shaped and thin-walled parts, providing customers with integrated "design-manufacturing-testing" services. Core Values:
Expertise in difficult-to-machine materials: Precision molding of specialty materials such as Inconel and magnesium alloys.
Functional surface treatments: Including conductive oxidation and Teflon coatings to meet specialized working conditions.
Third-party certification support: Assisting customers in obtaining international certifications such as SGS and UL.
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