Phosphating Dacromet Bearing Disc Spring Washer Blackening Bearing Preload Disc Spring
Phosphating Dacromet Bearing Disc Spring Washer Blackening Bearing Preload Disc Spring
Basic Properties
Place of Origin:
Sihong, China
Brand Name:
Sunzo
Certification:
CE/IATF16949/45001/14001/9001
Trading Properties
Minimum Order Quantity:
Negotiable
Price:
Negotiable
Payment Terms:
Negotiable
Product Summary
Bearing preload disc springs with specialized surface treatments: Phosphating, Dacromet, Blackening & coatings. Enhanced corrosion resistance (1500+ hrs salt spray), wear performance & extreme environment adaptation. Preserves load distribution & force output.
Product Custom Attributes
Highlight
Phosphating Bearing Disc Spring
,Dacromet Bearing Disc Spring
,Blackening disc spring washer
Surface Treatment Options:
Phosphating, Dacromet, Blackening, Mechanical Zinc Plating, Plain Oiled
Phosphating Thickness:
5-15μm
Wear Resistance Increase:
30%
Salt Spray Resistance:
48-hour ASTM B117
Dacromet Temperature Resistance:
Up To 300°C
Dacromet Corrosion Resistance:
1500+ Hours ASTM B117
Blackening Layer Thickness:
1-3μm
Humidity Test Resistance:
96-hour ISO 6270-2
Mechanical Zinc Thickness:
50-80μm
Abrasion Resistance:
450HV
Plain Oiled Thickness:
5-8μm
Load Distribution Variance:
±2%
Force Multiplication:
Up To 5.8x
Product Description
Detailed Specifications & Features
Bearing Preload Disc Spring Surface Treatment Options
The surface treatment of Bearing Preload Disc Springs (grooved/grooveless series) directly impacts corrosion resistance, wear performance, and service life in critical bearing assemblies. Our comprehensive surface treatment portfolio is engineered to address diverse operating conditions, with each coating system optimized for specific environmental stresses and performance requirements.
Available Surface Treatment Options
- Phosphating (iron/manganese/zinc phosphate) forms a crystalline conversion coating (5-15μm thickness) ideal for general industrial bearings operating in hydraulic oil or dust-laden environments. It enhances wear resistance by 30% compared to untreated surfaces and provides excellent adhesion for subsequent lubrication, passing 48-hour salt spray testing per ASTM B117.
- Dacromet (zinc-aluminum flake coating) delivers superior corrosion protection (1500+ hours ASTM B117 salt spray) for aerospace, automotive, and marine applications, withstanding temperatures up to 300°C and resisting chemical attack from fuels and deicing fluids.
- Blackening (alkaline oxidation) creates a uniform black oxide layer (1-3μm) for precision machinery bearings, offering moderate rust protection (96-hour humidity test per ISO 6270-2) while maintaining close tolerance control critical for high-precision assemblies.
- Mechanical Zinc Plating applies a 50-80μm zinc alloy coating via mechanical deposition, ideal for heavy industrial bearings in mining and construction equipment, providing abrasion resistance exceeding 450HV and compatibility with high-load applications.
- Plain Oiled treatment (mineral oil film, 5-8μm) offers cost-effective rust protection for light-load bearings in household appliances and small motors, facilitating easy installation with minimal friction.
All surface treatments are engineered to preserve the annular spring geometry, ensuring no impact on load distribution (±2% variance) or load multiplication performance (up to 5.8x force output).
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