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440 Stainless Steel Ball

440 stainless steel balls are mainly used in bearings, stamping/hydraulic parts, valves, seals, refrigeration equipment, aerospace high-precision mechanical parts
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440 stainless steel balls are mainly used in bearings, stamping/hydraulic parts, valves, seals, refrigeration equipment, aerospace high-precision mechanical parts


Features: The metallographic structure belongs to the martensitic steel, the production process requires high, the hardness reaches 56-58 degrees, it is magnetic, has good corrosion resistance, and has strong wear resistance and toughness.


Size: from 0.5mm-60mm balls can be produced


Many manufacturers of high-quality balls make use of the 440 stainless steel ball which is anodized at the cathode. Anodizing, or cold working, anodizes metals by coating them with an anti-rust, anti-tarnish, or anti-microbial coating. A layer of this coating is applied to an otherwise blank or inflated sphere to create the desired properties of anodized surface. This process produces a smoother, stronger, and much wear resistance ball than ordinary steel or aluminum balls.


Anodized steel or brass nipples are available in two standard diameters. Diameters commonly used in applications include three inches, six inches, eight inches, ten inches, and twelve inches. The use of these standard diameter balls is widespread and gives manufacturers significant cost savings over using custom items. Although these standard diameter anodized balls have a polished finish, most manufacturers have a matte-black or brushed finish available. They are available in both round and rectangular shapes, and can be drilled and tapped for holding accessories and connecting pipes.


Many industries utilize a variety of sizes, shapes, and materials in ball bearings. The usage and requirement of each industry will dictate the size and shape of the ball bearing they need. For example, some industries require very small ball bearings, while others require very large ones. When selecting a bearing, make sure you understand the requirements of the application and select the right bearing size to match the specific application.

We have an excellent technical team, our products in quality and quantity will make you satisfied, welcome to buy
  • 0575-82693865   13868109994
  • 0575-82664021
  • Songxia Development Zone of Shangyu, Zhejiang, China.
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