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Jiangsu Sunzo Spring Elasticity Technology Co., Ltd
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{"title":"Phosphating Dacromet Bearing Disc Spring Washer Blackening Bearing Preload Disc","imgUrl":"https:\/\/img.chinax.com\/nimg\/7e\/af\/c10fb2dfaa4b2b15e85fa2917b98-200x200-1\/phosphating_dacromet_bearing_disc_spring_washer_blackening_bearing_preload_disc.jpg","attrs":{"Place of Origin":"Sihong, China","Brand Name":"Sunzo","Certification":"CE\/IATF16949\/45001\/14001\/9001","Minimum Order Quantity":"Negotiable"}}
{"title":"Bearing Disc Spring with Ultra-High Cycle Durability for High-Speed Continuous","imgUrl":"https:\/\/img.chinax.com\/nimg\/d4\/5a\/78f7d0af00e757eef9ab6f29eef2-200x200-1\/bearing_disc_spring_with_ultra_high_cycle_durability_for_high_speed_continuous_bearing_operation_and_fatigue_resistance.jpg","attrs":{"Material":"50CrVA, 60Si2MnA","Carbon content":"1.05% (50CrVA), 0.6% (60Si2MnA)","Vanadium content":"0.8% (50CrVA)","Molybdenum content":"0.25% (50CrVA)"}}
{"title":"Bearing Disc Spring designed for bearing pre tightening with grooved and","imgUrl":"https:\/\/img.chinax.com\/nimg\/9d\/1e\/ce588c570816ec49e8b6265d004c-200x200-1\/bearing_disc_spring_designed_for_bearing_pre_tightening_with_grooved_and_grooveless_types_featuring_simple_durable_annular_design.jpg","attrs":{"Minimum Order Quantity":"Negotiable","Model NO.":"sunzo","Function":"Pressed, Phonation, Drive, Restoration, Measurement","Material":"Steel"}}
{"title":"Bearing Disc Spring constructed from spring steel and stainless steel for","imgUrl":"https:\/\/img.chinax.com\/nimg\/23\/26\/930235021ba16b66b2130966c425-200x200-1\/bearing_disc_spring_constructed_from_spring_steel_and_stainless_steel_for_bearing_preload_and_uniform_load_distribution.jpg","attrs":{"Minimum Order Quantity":"Negotiable","Model NO.":"sunzo","Function":"Pressed, Phonation, Drive, Restoration, Measurement","Material":"Steel"}}
{"title":"Bearing Disc Spring with 65Mn Carbon Steel, 50CrVA High-Strength Alloy, and","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/06\/a8f35c4da253cddb7f07a5f17cec-200x200-1\/bearing_disc_spring_with_65mn_carbon_steel_2c_50crva_high_strength_alloy_2c_and_sus304_stainless_steel_for_optimal_preload_perform.jpg","attrs":{"Tensile strength":"980-1180 MPa","Elastic recovery":"\u226585%","Temperature range":"-40\u00b0C to 120\u00b0C","Fatigue resistance":"\u226510\u2077 cycles"}}
{"title":"High Stiffness Bearing Disc Spring Grooveless Series for Heavy Load Bearing","imgUrl":"https:\/\/img.chinax.com\/nimg\/82\/9f\/cb6c8b7021af2d136f5c79647a4a-200x200-1\/high_stiffness_bearing_disc_spring_grooveless_series_for_heavy_load_bearing_preload_and_uniform_load_force_in_multiple_plate_beari.jpg","attrs":{"Minimum Order Quantity":"Negotiable","Model NO.":"SUNZO","Function":"Pressed, Phonation, Drive, Restoration, Measurement","Material":"Steel"}}
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).
