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Specification
Brand : DAHSLNWKN
BulletPoint : Bearings
Color : One Color
ExternallyAssignedProductIdentifier : 8017271534570
ItemName : DAHSLNWKN TMP1105 Flange Ball Bearings SR4ZZ 440C Inch & Flanged Stainless Miniature Ball Bearings RC Models 1/4" x5/8" x0.196
ItemPackageDimensions_Height : 1 centimeters
ItemPackageDimensions_Length : 3 centimeters
ItemPackageDimensions_Width : 2 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : magnetic-bearings
Manufacturer : DAHSLNWKN
ModelNumber : DAHSLNWKN
NumberOfItems : 1
PartNumber : DAHSLNWKN
ProductDescription : Bearings
Bearings
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: SR4ZZ
Structure: Deep Groove
Material: 440C Stainless Steel ( prefix "S" )
Bore Dia (d): 0.25 inch
Outer Dia (D):0.6250 inch
Width (B): 0.1960 inch
Closures: Metal Shielded(ZZ)
Lubrication: Grease
Magnetic: little
Hardness: 58HRC
Corrosion Resistance: General
Clearance: C0
Grades: ABEC Grades 1
Dynamic Load Rating (Cr) (Newtons): 283
Static Load Rating (Cor) (Newtons): 112
Ball Qty: 8
Ball Dia (Dw): 0.0937 mm
Weight:4.54 g
Quantity: 1 Lot = 10PCS
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 marte
ProductSiteLaunchDate : 2024-09-14T07:23:58.022Z
Size : One Size
UnitCount : 1
UnspscCode : 31171500