How to pick a good quality metal meat grinder shaft?

Stainless steel: give priority to 304 or 316 stainless steel. 304 stainless steel has good corrosion resistance, toughness and strength, which can meet the daily needs of meat grinding, and is not easy to rust, easy to clean.

To select a good quality metal meat grinder shaft, you need to consider a number of aspects such as material, processing technology, dimensional accuracy, surface quality, etc. The following are some key points:

Material

Stainless steel: give priority to 304 or 316 stainless steel. 304 stainless steel has good corrosion resistance, toughness and strength, which can meet the daily needs of meat grinding, and is not easy to rust, easy to clean. 316 stainless steel is more corrosion-resistant, especially suitable for grinding meat with acidic or high salt content, but the cost is relatively high.

Alloy Steel: Some high-end meat grinder shafts are made of alloy steel, such as chromium-molybdenum alloy steel. This material has higher strength, hardness and abrasion resistance, and can withstand greater torque and pressure. It is suitable for commercial use or frequent use scenarios, but it is also more expensive.

Processing

Forging: The forging process produces meat grinder shafts with dense internal tissues and reasonable fiber flow distribution, which significantly improves the strength and toughness of the shafts, making them more resistant to wear and fatigue, and of relatively good quality.

Casting: casting process can produce a complex shape of the shaft, but there may be internal porosity, shrinkage and other defects, affecting the performance of the shaft. If the precision casting process is used, such as investment casting, it can effectively improve the precision and quality of castings and reduce defects.

Dimensional accuracy

Accurate dimensions are critical for meat grinder shafts. The diameter, length, keyway and other dimensions of the shaft should be in accordance with the design requirements of the meat grinder, and the tolerance range should be controlled within a small range, generally between ±0.01mm and ±0.05mm. This can ensure the accuracy of the shaft and other components, such as motor shaft, gears, meat grinder, etc., to ensure the normal operation of the meat grinder, reduce vibration and noise.

Surface quality

Surface roughness: the surface of the shaft of a good quality meat grinder should be smooth, with low roughness value, which is generally required to reach Ra0.8μm to Ra1.6μm. Smooth surface can reduce the adhesion and residue of meat on the shaft, which is easy to clean, and also reduce the friction between the shaft and the chamber of the meat grinder, which will improve the efficiency and prolong the service life.

Flawless: The surface of the shaft should be carefully inspected and should be free from defects such as cracks, sand holes and scratches. These defects may lead to stress concentration in the shaft during use, reducing the strength and reliability of the shaft and even causing safety accidents.