Customized Lathe CNC Machining Shaft Large Steel Hollow Shaft

Product name

Customized CNC lathe machining large steel hollow shaft

Model name: Long shaft

Application: Industrial machine equipment

Material grade: steel, stainless steel, aluminum

Surface Finished: machined natural color, blacken, anodizing

Process: CNC Turning

Tolerance:±0.01~0.02m

Size and weight: custom according to customer’s requirements.

The classification of the shaft
Classification: Shaft parts according to the characteristics of its structure shape, can be divided into optical shaft, ladder shaft, hollow shaft and special-shaped shaft (including crankshaft, camshaft and eccentric shaft, etc.) four categories
Optical shaft: hollow shaft, half shaft, ladder shaft, spline shaft, cross shaft, eccentric shaft, crankshaft, convex shaft
If the shaft length and diameter of the proportion to points, can be divided into rigid axis (L/d < 12 = and flexible axis (L/d > 12) two categories

Material and blank of shaft parts

Reasonable selection of materials and stipulating the technical requirements of heat treatment are of great significance to improve the strength and service life of shaft parts. At the same time, it has a great influence on the machining process of shaft.
1. Material of shaft parts
Generally, 45 steel is commonly used for shaft parts. According to different working conditions, different heat treatment specifications (such as normalizing, tempering, quenching, etc.) are adopted to obtain certain strength, toughness and wear resistance.
For medium precision and high speed shaft parts, 40Cr alloy steel can be selected. This kind of steel has higher comprehensive mechanical component energy after quenching and tempering. The shaft with higher precision is sometimes made of bearing steel GCrls and spring steel 65Mn, which have higher wear resistance and fatigue resistance after tempering and surface quenching.
For the shaft working under high speed and heavy load conditions, 20CrMnTi, 20Cr and other low carbon gold containing steel or 38CrMoAIA nitride steel can be selected. After carburizing and quenching treatment, low carbon alloy steel has very high surface hardness, impact toughness and core strength, but the heat treatment deformation is very small.
2. Blank of shaft parts
Shaft parts of the blank is the most commonly used round bar and forgings, only some large, complex structure of the shaft is used to cast

Preprocessing of shaft parts
Wheel parts should be pre-machined before cutting. Pre-machining includes calibration, cutting and cutting end faces and drilling center holes.
1, correction: correction bar blank in the process of manufacturing, transportation and storage of bending deformation, in order to ensure uniform processing allowance and reliable feeding clamping. Calibration can be performed on various presses.
2, cut off: when the bar blank is used, it should be cut off according to the required length before turning the outer circle. The cutting can be done on a saw machine, and the cutting of high hardness bar can be done on a cutting machine with a wafer grinding wheel.
3, cutting end drilling center hole: the center hole is the most commonly used positioning datum for shaft parts processing. In order to ensure that the center hole drilled is not skewed, the end face should be cut before drilling the center hole.
4, coarse car: if the shaft blank is made of forgings or large castings, it is necessary to process the blank car, in order to reduce the shape error of the blank foreign surface, so that the processing allowance of the subsequent process is even.

Quality Control of large steel hollow shaft

1. Quality control: the defective products rate is 0.1%. Imported material 100%.

2. Reasonable price. Precision made. Experience & reasonable QC that you can reply on.

3. Each part would be given 100% test and tryout before shipment.

4. Adequate supply capacity. Punctual delivery time.

What can you expect from Hi-Precision?

Our manufacturing process of  large steel hollow shaft also ensures that each and every one of our customers receives a comprehensive solution for any need they may have. This includes complex and precision parts, like optical parts, automotive parts, medical devices or aerospace parts.No matter how complicated your project may be, we can produce what you need.

· Saving money through our low-volume manufacturing process

· Faster time to market (and a higher success rate)

· Creating flexible design options for all your products

· Supplying you with a comprehensive option for bridge production

How can you get a quote of  large steel hollow shaft​ ?

Kindly please provide the CNC Machining Parts drawings in PDF, if provide in STEP or IGS will be better. We'll review the drawings and send you a quote list within 24 hours.