JX-21JG371-M10-D9-136.5-SS, CNC stainless steel machined parts and long shafts are used in the industrial manufacturing of catering equipment.

304 stainless steel

"304 stainless steel, which means "sus304", belongs to the Japanese material standard. The main components are chromium, manganese, nickel, carbon, and other elements. It is widely used in food, chemical industry, atomic energy, decoration and household products, and other fields. 304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm³; it is also called 18/8 stainless steel in the industry, which means Contains more than 18% of chromium and more than 8% of nickel; high-temperature resistance of 800°C, good processing performance and high toughness, widely used in industry, furniture decoration industry and food and medical industry. But it should be noted that food grade 304 Compared with ordinary 304 stainless steel, stainless steel has stricter content indicators. The international definition of 304 stainless steel is that it mainly contains 18%-20% chromium and 8%-10% nickel, but food-grade 304 stainless steel contains 18% chromium and nickel 8%, allowing fluctuations within a certain range, and limiting the content of various heavy metals. 304 is a versatile stainless steel, which is widely used in the production of equipment and parts that require good overall performance (corrosion resistance and formability).In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a grade of stainless steel produced according to the American ASTM standard.

1. Stainless steel shaft machining accuracy

(1) dimensional accuracy: the dimensional accuracy of stainless steel shaft parts mainly refers to the dimensional accuracy of the shaft diameter and shaft length. According to the application requirements, the dimensional accuracy of the spindle journal diameter is usually IT6-IT9, and the stainless steel journal can also reach IT5. The length of the shaft is usually the nominal size, and the length of each step of the stepped shaft can be given the corresponding tolerance according to the user's requirements.

(2) Geometric accuracy: Shaft parts are usually supported by two journals on bearings. These two journals are called support journals and are the basis of the shaft assembly. In addition to dimensional accuracy, geometric accuracy (roundness, cylindricity) of the support journals is usually required. For journals of general accuracy, geometric errors should be limited to the diameter tolerance. When the requirements are very high, the permissible tolerance values should be separated on the parts drawing.

(3) Mutual position accuracy: the coaxially of the matched journals (drive component journals) in the shaft parts relative to the support journals is the general requirement for their mutual positioning accuracy. Usually, for shafts with ordinary accuracy, the radial runout of the support journal with matching accuracy is 0.01-0.03mm, while the high-precision shaft is 0.001-0.005mm. In addition, the mutual position accuracy also has the coaxially of the inner and outer cylindrical surfaces, as well as the perpendicularity of the axial positioning end face and axis requirements.

2. Surface roughness depends on the accuracy and operating speed of the machine: The surface roughness requirements of shaft parts are also different. Generally speaking, the surface roughness Ra value of the support journal is 0.63-0.16μm. The surface roughness Ra value of the matched journal is 2.5-0.63μm. From prototype to mass production, we can meet the demand of various quantities. our main products are armature shafts, precision shafts, rotor shafts, motor shafts, stainless steel shafts, etc. Our products are widely used in all kinds of micromotors, power tools, automobiles, precision machinery, etc. The products are widely used in all kinds of micromotors, power tools, automobiles, precision machinery, etc.

Packing: Inner is Poly foam, out is carton. Then pallet. Carton size: 29*19*19.5CM and 23.5*17.5*8, CM and pallet size is: 215*100*90CM, or as your requirement.

Packaging & Delivery and Packaging Details

1. Shrink film+wooden box

2. Cardboard box+pallet

3. Color box

4. As per the customer's request