S6204ZZ Deep Groove Bearing ABEC-1 S6204 Z ZZ S 6204 440C Stainless Steel S6204Z Ball Bearings 20 * 47 * 14 mm

<p>WHY 440C STAINLESS steel?</p><p>Good corrosion resistance to water and many weak chemicals</p><p>Corrosion resistance can be improved by passivation</p><p>Good for temperatures up to 300°C</p><p>Slightly softer than chrome steel so lower load ratings</p><p>Will corrode in salt water or salt spray and poor resistance to acids/alkalis</p><p>More expensive than chrome steel</p><p>TECHNICAL SPECS</p><p>Item: S6204ZZ</p><p>Structure: Deep Groove</p><p>Material: 440C Stainless Steel ( prefix "S" )</p><p>Bore Dia (d): 20 mm</p><p>Outer Dia (D): 47 mm</p><p>Width (B): 14 mm</p><p>Closures: Metal Shielded(ZZ)</p><p>Lubrication: Grease</p><p>Magnetic: little </p><p>Hardness: 58HRC</p><p>Corrosion Resistance: General</p><p>Clearance: C0</p><p>Grades: ABEC Grades 1</p><p>Dynamic Load Rating (Cr) (Newtons): 12800 </p><p>Static Load Rating (Cor) (Newtons): 6650</p><p>Ball Qty: 8</p><p>Ball Dia (Dw): 7.938 mm</p><p>Weight: 106 g</p><p>Quantity: 1 Lot = 2 PCS</p><p>What is 440C?</p><p>A martensitic stainless steel. It's composed of these major alloy elements (I don't list the minor elements since they don't play a major role):</p><p>Carbon: 0.95-1.25% This increases hardenability and wear resistance, but decreases toughness in higher amounts.</p><p>Manganese: 45% This is added to reduce brittleness and improve forgeability, hardenability, and reducing deformation.</p><p>Silicon: 30% This is a deoxidizer and improves hot-forming properties.</p><p>Chromium: 17.00-18.00% Added only to high alloy tool steels, this improves hardenability, high wear resistance, toughness, and corrosion resistance.</p><p>Molybdenum: 50% Improves deep hardening and toughness.</p><p>These basic elements (along with iron) are a simple combination that works well together, and has for many decades.</p><p>This alloy is technically classified as UNS (Unified Numbering System) S44044. It's also classified as SAE (Society for Automotive Engineers) as 51440C.</p><p>The American Iron and Steel Institute classifies it as 440C martensitic stan</p>

• Model Number: S6204ZZ
• Torque Capacity: 20*47*14mm
• Surface Roughness: Ra 0.05
• Structure: Deep Groove
• Coatings: 440C Stainless Steel