-40%

(Qty.10) S686ZZ (6x13x5 mm )Bearing 440C Stainless Steel Ball Bearings 686zz

$ 4.74

Availability: 100 in stock
  • Country/Region of Manufacture: China
  • Width (B): 5 mm
  • Bearing Type: Shielded
  • Model: S686 Bearing
  • Weight (g) (grams): 2.68
  • Part Number: S686zz Bearing
  • Compatible Equipment Make: Acme
  • Bearing & Bushing Part Type: Precision Ball
  • Outer Dia (D): 13 mm
  • Compatible Equipment Type: Backhoe Loader
  • Condition: New
  • Bearing End Cap Type: Closed End Cap
  • Bore Dia (d): 6 mm
  • MPN: S618/6 ZZ
  • Brand: FUSHI
  • Bore Diameter: 6 mm
  • Refund will be given as: Money Back
  • Material: Stainless Steel
  • Type: Ball Bearing
  • Bearing Material: 52100 Chrome steel
  • Return shipping will be paid by: Buyer
  • All returns accepted: Returns Accepted
  • Item must be returned within: 30 Days

    Description

    WHY 440C STAINLESS steel?
    Good corrosion resistance to water and many weak chemicals
    Corrosion resistance can be improved by passivation
    Good for temperatures up to 300°C
    Slightly softer than chrome steel so lower load ratings
    Will corrode in salt water or salt spray and poor resistance to acids/alkalis
    More expensive than chrome steel
    TECHNICAL SPECS
    Item: S686ZZ
    Structure: Deep Groove
    Material: 440C Stainless Steel ( prefix "S" )
    Bore Dia (d): 6 mm
    Outer Dia (D): 13 mm
    Width (B): 5 mm
    Closures: Metal Shielded(ZZ)
    Lubrication: Grease
    Magnetic: little
    Hardness: 58HRC
    Corrosion Resistance: General
    Clearance: C0
    Grades: ABEC Grades 1
    Dynamic Load Rating (Cr) (Newtons): 920
    Static Load Rating (Cor) (Newtons): 354
    Ball Qty: 8
    Ball Dia (Dw): 2.000 mm
    Weight: 2.68 g
    Quantity: 1 Lot = 10 PCS
    What is 440C?
    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):
    Carbon: 0.95-1.25% This increases hardenability and wear resistance, but decreases toughness in higher amounts.
    Manganese: 45% This is added to reduce brittleness and improve forgeability, hardenability, and reducing deformation.
    Silicon: 30% This is a deoxidizer and improves hot-forming properties.
    Chromium: 17.00-18.00% Added only to high alloy tool steels, this improves hardenability, high wear resistance, toughness, and corrosion resistance.
    Molybdenum: 50% Improves deep hardening and toughness.
    These basic elements (along with iron) are a simple combination that works well together, and has for many decades.
    This alloy is technically classified as UNS (Unified Numbering System) S44044. It's also classified as SAE (Society for Automotive Engineers) as 51440C.
    The American Iron and Steel Institute classifies it as 440C martensitic standard stainless steel. Most modern knifemakers simply call it 440C.
    DIMENSIONS