CNC Turned Steel Spindles
Typical Structures of Shaft Parts
Simple shafts include smooth and stepped shafts (such as motor shafts and drive shafts).
Complex shafts include shafts with keyways, splines, threads, eccentricities, or curved surfaces (such as camshafts and lead screws).
Precision shafts include high-precision spindles (such as machine tool spindles and semiconductor equipment spindles), with tolerances up to IT5 (±0.005mm).
Description
CNC machining of shaft parts is characterized by high precision and efficiency. Simple shafts (such as smooth and stepped shafts) are typically completed on a CNC lathe through multiple processes, including rough turning, semi-finishing, and finishing. Key dimensions must be controlled to within ±0.01mm. Complex shafts (such as drive shafts with keyways and splines) require a combination of turning and milling, completing multiple features in a single setup to avoid re-positioning errors. Slender shafts require a steady rest or steady rest to prevent deformation, while high-hardness materials (such as hardened steel) require grinding as a final machining step.
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 |
High-speed CNC machining of metal parts
High-end shaft components (such as spindles and lead screws) used in semiconductors and precision machinery have even more stringent process requirements. These parts not only require IT5-level dimensional accuracy (±0.005mm) and surface roughness below Ra0.2μm, but also require controlled micro-residual stresses. A typical process chain consists of turning, heat treatment, fine grinding, and polishing. Ultra-precision shafts may even require additional honing or laser correction steps. A constant temperature environment (20±1°C) and vibration-proofing measures are required during machining. In addition, online measurement systems are used to compensate for thermal deformation in real time, ensuring nanometer-level form accuracy (e.g., roundness ≤0.5μm).
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
As a leading CNC machining service provider for foreign trade in China, we adhere to the principle of "German standards, Chinese costs" and provide global customers with precision components comparable to European and American quality. Our factory boasts over 50 CNC machines and a monthly production capacity exceeding 500,000 pieces.
Service Advantages:
Flexible production line: Supports mixed production of multiple materials, including stainless steel and plastics (PEEK/nylon). High-end surface finishes, such as mirror polishing and micro-arc oxidation, enhance product value.
Supply chain integration: We provide supporting services such as raw material procurement and customs clearance to reduce overall costs for our customers.
End applications include precision gears, sensor housings, and automated fixtures, primarily exported to the EU and North America. Choose us, and you'll enjoy peace of mind!
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