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Home > Blog > Turning Shaft

Turning Shaft

2025-04-15 09:07:42

Turning Shaft refers to a type of shaft-shaped parts that are processed by turning, and are often used to transmit power, support rotating structures or guide motion. It is usually processed by CNC lathes (CNC Lathe) to cut metal bars or tubes to form shaft structures of different shapes and sizes.

Turning Shaft can achieve diameters ranging from φ2mm to φ300mm, and processing lengths ranging from 10mm to 1500mm, and is suitable for equipment of various scales and precision requirements. Due to its high processing precision, flexible structure and high processing efficiency, it has extremely wide applications in machinery manufacturing, automobiles, motors, automation, aviation, medical and other Industries.

Turning Shaft

Features:

High processing precision: Through modern CNC Turning centers, Turning Shaft can achieve a processing tolerance of ±0.005mm, meeting the precision requirements of IT6 and above. Especially in situations with high speed or high matching precision, the requirements for cylindricity and coaxiality can be controlled within 0.01mm.


Flexible and diverse geometric shapes: Turning Shaft can be processed into various structures such as stepped shafts, hollow shafts, threaded shafts, tapered shafts, etc. Special shapes such as slotting, knurling, transverse holes, positioning steps, etc. can also be processed in one go to improve the integration of parts.


Good surface finish: The surface roughness Ra after standard turning is usually 1.6μm, and the surface roughness can reach Ra 0.4μm or less using fine turning or turning and grinding composite processes, providing a good foundation for subsequent surface treatments such as electroplating, oxidation, and quenching.


High automated processing efficiency: CNC lathes generally support automatic feeding, tool magazine tool change, and multi-axis linkage technology. One device can stably process 300 to 500 precision shaft products per day, which is suitable for mass production.


Strong processing adaptability: It can process a variety of metal and engineering plastic Materials, and the diameter, length, thread specifications, surface treatment, etc. can be customized. Some precision parts can reach a monthly delivery capacity of more than 50,000 pieces.


Advantages:

Strong structural stability: After Turning Shaft processing is completed, it can maintain stable concentricity and balance during high-speed operation, and is suitable for high-speed rotation scenarios above 8000rpm. The shaft hardness after heat treatment can reach HRC 50 or above, effectively improving fatigue resistance.


Relatively low processing cost: Compared with multi-processes such as milling and grinding, Turning processing path is intuitive and processing time is short. Taking a stepped shaft with a diameter of φ25mm and a length of 150mm as an example, the total turning time does not exceed 4 minutes, and the processing cost is controlled within the range of 1-2 US dollars (excluding materials and surface treatment).


Wide application scenarios: From small household appliance motor shafts to heavy-duty engineering machinery transmission shafts, and even precision medical instrument shafts, Turning Shaft is suitable for almost all equipment with rotating or transmission structures, supporting small batch rapid prototyping and large batch long-term supply.


Excellent adaptability for post-processing: Turning Shaft is usually used as an intermediate or core motion structure, which is easy to perform subsequent processes such as tempering, coating, deburring, precision grinding, and welding. Suitable for use with bearings, gears, couplings, etc.


Good traceability and detectability: Standard Turning Shaft processing plants generally have inspection equipment such as three-coordinate measuring machines, coaxiality testers, and roughness meters, and can provide dimensional inspection reports, material certifications, and heat treatment reports, which are convenient for quality tracking and export use.


Applications:

Motor industry: rotor shaft, output shaft, lead-out shaft, support and transmission of power (common diameter range φ4~φ40mm)

Automotive field: transmission shaft, steering shaft, turbine shaft, crankshaft, etc., requiring high strength and torsion resistance and fatigue life exceeding 100,000 kilometers

Mechanical equipment: servo shaft, guide shaft, roller shaft, used for positioning, rotation and guidance

Pump equipment: pump shaft, impeller shaft, need to maintain high strength and anti-deformation performance under corrosion, cold and hot temperature difference

Robotic automation: rotary joint shaft, clamping shaft, sensor shaft, requiring high response and high precision

Aviation/medical equipment: micro shaft, high-precision rotary shaft, need to be both light and high temperature resistant


Common materials:

Stainless steel: SUS303, 304, 316, 420, etc., with good corrosion resistance and strength

Carbon steel: S45C, C45, 1045, 40Cr, 42CrMo, etc., with high strength, suitable for high-load environments

Aluminum alloy: 6061, 7075, etc., light weight, good processability, suitable for light-load rotating parts

Copper and copper alloy: H59, C3604, etc., good conductivity, suitable for Electrical equipment shafts

Plastic: POM, PTFE, PA, PEEK, etc., suitable for weight and noise sensitive applications


FAQ:

What is the difference between Turning Shaft and ordinary shaft processing?

Turning Shaft refers to a finished shaft that is processed once or multiple times by turning. Compared with other composite processing methods (such as turning-milling-grinding combination), the processing path is clear and efficient, and it is suitable for standard structures and shafts with medium and high precision requirements.


How long is the service life of Turning Shaft?

Depending on the material, heat treatment and working environment of the shaft, its life span can range from 5,000 to 50,000 hours. High-end alloy steel Turning Shaft is used with rolling bearings, and the average life span is over 3 years under standard lubrication and load conditions.


Can Turning Shaft meet high speed use?

Yes. After high-precision processing and dynamic balancing, Turning Shaft can be used for most medium-sized high-speed motors below 10,000rpm; special customization (such as dynamic balancing control at G2.5) can meet higher speed scenarios.


How to deal with wear on Turning Shaft?

A: Minor wear can be treated by repair welding, grinding, plating repair, etc.; severe wear is recommended to replace a new shaft. To avoid frequent wear, ensure that the selection of mating parts is reasonable and lubricant grease is added regularly.


Does Turning Shaft support customization?

Fully support. Just provide drawings, samples or size requirements, and the manufacturer can provide proofing, quotation and processing services according to the requirements. For mass customization, the common MOQ is 100 pieces, and special high-precision products can also support a minimum order quantity as low as 10 pieces.


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Next: Stainless Steel Screws 2025-04-14
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