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.01 Comprehensive Customization:
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Technical Data
High Temperature Stainless Steel Bearings Specifications
Comprehensive technical reference for combined high-temperature and corrosive-duty applications.
Material & Thermal Properties
Bearing TypeDeep Groove, High-Temperature Stainless
Ring & Ball MaterialAISI 440C or SUS316
Grease TypePTFE/Synthetic High-Temp or Solid Lubricant
Cage MaterialBrass, Bronze, or Heat-Stabilized Polyimide
ClearanceThermal-Expansion Compensated, Custom Calculated
HardnessHRC 55 - 58 (440C)
Performance Characteristics
Temperature RatingUp to 200°C (Grease) / 350°C+ (Solid Lubricant)
Corrosion ResistanceASTM B117 Salt Spray Tested
Load Rating85-95% of Chrome Steel Equivalent
Speed RatingReduced at Extreme Temperature
SealingHigh-Temp Rated or Open Configuration
Precision GradeP0, P6
Use Cases
Ideal Applications
Industries where elevated temperature and corrosion exposure occur together.
Industrial Baking & Oven Equipment
Continuous baking oven conveyor and mixing equipment shafts require bearings that survive both heat exposure and daily washdown cleaning cycles.
Steam Sterilization Autoclave Equipment
Medical and food autoclave equipment uses high temperature stainless bearings to withstand repeated steam sterilization cycles without corrosion or lubrication failure.
Kiln & Drying Equipment Adjacent Machinery
Material handling equipment positioned near ceramic kilns or industrial dryers requires bearings rated for radiant heat exposure combined with humid processing conditions.
Food Processing Cooking & Retort Equipment
Cooking, retort, and thermal processing equipment for food products uses high temperature stainless bearings to survive both process heat and sanitation washdown.
Textile Heat-Setting Equipment
Fabric heat-setting and thermal finishing machinery uses high temperature stainless bearings for reliable operation in heated, occasionally humid processing environments.
Industrial Paint & Powder Coating Curing Ovens
Curing oven conveyor systems require bearings that withstand sustained oven temperature exposure while resisting the corrosive byproducts of coating cure processes.
Why Combined Heat & Corrosion Engineering?
Superior Advantages
Thermal stability meets sustained corrosion resistance.
350°C+
Solid Lubricant Rating
Molybdenum disulfide and graphite-based solid lubricant options extend operating temperature well beyond conventional grease limitations.
200°C
Continuous Grease Rating
PTFE and specialty synthetic greases maintain lubricating film strength at temperatures where standard lithium grease would have already broken down.
Thermal-Compensated
Clearance Engineering
Custom-calculated clearance accounts for thermal expansion mismatch, preventing the seizure risk of standard-clearance bearings in high-heat installation.
Dual-Protection
Heat + Corrosion Resistance
Combining stainless raceways with heat-stable grease and cage delivers reliable performance where either factor alone would cause premature failure.
Shipping & Payment
Global logistics for high Temperature Stainless Steel Bearings orders.
Payment Terms
T/T (Wire Transfer): 30% deposit, 70% upon shipment.
L/C at Sight: Accepted for orders exceeding 5,000 pieces.
Open Account: Available for long-term OEM customers.
Shipping Methods
Sea Freight: FCL/LCL from Shanghai or Ningbo for bulk orders.
Air Express: DHL/FedEx for urgent samples and small batches.
Lead Time
Standard High-Temp Grease Sizes: 25 – 35 days.
Solid Lubricant Configuration: 35 – 45 days.
Custom Clearance Engineering: 35 – 45 days.
Frequently Asked Questions
Expert answers about high Temperature Stainless Steel Bearings.
Q: What temperature can these bearings actually withstand?
A: Standard PTFE/synthetic grease configurations are rated for continuous operation up to 200°C. For higher temperatures up to 350°C and beyond, solid lubricant configurations using molybdenum disulfide or graphite-based lubricant are available, though at reduced speed capability compared to grease-lubricated operation.
Q: Why can't I just use a standard corrosion resistant stainless bearing in a hot environment?
A: Standard stainless bearings use conventional lithium-based grease that begins to oxidize and lose lubricating properties above approximately 120-130°C, leading to dry running and rapid raceway wear even though the stainless material itself would tolerate the heat structurally.
Q: Do these bearings still provide full corrosion resistance at high temperature?
A: Yes, the stainless steel raceway material provides the same fundamental corrosion resistance regardless of operating temperature; the high-temperature engineering addresses the lubrication and clearance aspects specifically, while the base material corrosion resistance is inherent to the stainless alloy.
Q: Are high temperature stainless bearings more expensive than standard corrosion resistant bearings?
A: Yes, typically an additional 20-35% premium over standard corrosion resistant stainless bearings, reflecting the cost of specialty high-temperature grease or solid lubricant and heat-stable cage materials.
Q: What is the difference between grease-lubricated and solid-lubricant high temperature bearings?
A: Grease-lubricated bearings using PTFE or synthetic base oils handle continuous operation up to approximately 200°C with normal speed capability. Solid lubricant bearings use a dry film (molybdenum disulfide or graphite) applied to the raceway and balls, extending temperature capability to 350°C+ but at meaningfully reduced speed rating due to the different friction characteristics of solid versus fluid lubrication.
Q: How is thermal expansion clearance compensation calculated?
A: We calculate expected clearance change based on the temperature differential between installation and operating conditions, the thermal expansion coefficients of the stainless bearing material and the housing material, and specify a custom clearance class that results in the correct running clearance once the bearing reaches operating temperature.
Q: What cage material is recommended for the highest temperature applications?
A: Machined bronze or brass cages are typically recommended above 200°C, as they retain dimensional stability where nylon or standard polyamide cages would soften or degrade; heat-stabilized polyimide is a lighter-weight alternative suitable for moderate-high temperature ranges.
Q: Does high temperature operation reduce the bearing's speed rating?
A: Yes, particularly for solid lubricant configurations, since solid film lubrication provides less effective friction reduction than fluid grease; speed ratings are reduced accordingly and we provide specific speed-temperature derating guidance for your application.
Q: What is the minimum order quantity for high temperature stainless bearings?
A: Standard MOQ is 200 pieces for common stocked sizes with standard high-temperature grease. Solid lubricant configurations or custom clearance engineering requires a minimum order of 500 pieces.
Q: What information do you need to properly specify a high temperature bearing for my application?
A: We need your expected continuous and peak operating temperature, shaft speed, housing material (for thermal expansion calculation), and any corrosion exposure details (chemical, humidity, washdown) to properly engineer clearance and lubrication specification.
Q: Can you provide temperature rating test documentation?
A: Yes, thermal cycling and grease/lubricant performance test reports are available to support your equipment's engineering documentation and thermal design validation requirements.
Q: What is the typical lead time for solid lubricant bearing configurations?
A: Solid lubricant configurations typically require 35-45 days due to the specialized dry-film application process, which is more complex than standard grease dispensing manufacturing.
General Information
Key specifications and ordering details.
| MOQ | 200 Pieces (Solid Lube: 500) |
| Lead Time | 25 – 45 Days |
| Packaging | Heat-Sealed Protective Wrap / Carton |
| Certifications | ISO 9001 / Material Mill Certificates |
| Materials | AISI 440C / SUS316 Stainless Steel |
| Customization | Lubrication Type, Clearance, Cage Material |
ABOUT US
Zhejiang Yingfei Biotechnology Co., Ltd.
is China High Temperature Stainless Steel Bearings Manufacturers and Wholesale High Temperature Stainless Steel Bearings Factory that combines industry and trade. Its subsidiary, Ningbo Kaifei Machinery Technology Co., Ltd., has passed the GB/T 19001-2016/ISO 9001:2015 international quality system certification and is committed to producing precision bearings and fasteners made of stainless steel, carbon steel, and bearing steel. The company uses high-quality steel materials and implements fine craftsmanship production processes. It is a diversified and professional production base for casting in China, based on high-end and high-end markets, with an annual output of 2400000 sets. It is mainly exported to dozens of countries in Europe, America, Asia, Africa, and other regions, and is widely used in the fields of motors, home appliances, sports equipment, automobiles, mechanical rotation, furniture, strollers, water pumps, toys, etc. Our company adheres to the business philosophy of "paying attention to details, integrity, and efficiency". While developing, we continuously strengthen and enrich our company's technical strength, improve and perfect after-sales service, logistics distribution, and market promotion. Ensure high-quality products and a reliable reputation to serve domestic and international markets. Standardize oneself, be meticulous, strictly demand, and enhance the understanding and trust of partners. Establish good cooperative relationships with customers.
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10 YEARS INDUSTRY EXPERIENCE
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8700m² advanced factory
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15 high-tech professionals
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Annual production: 2.4 million sets
Quality Assurance
High Temperature Performance Assurance
Rigorous quality protocols ensure sustained performance under combined heat and corrosion exposure.
1
Thermal Clearance Engineering Calculation
Clearance class is calculated based on your specific operating temperature and housing material thermal expansion characteristics before production.
2
High-Temperature Lubricant Application Control
Grease or solid lubricant application is precisely controlled and verified to ensure consistent thermal performance across every bearing.
3
Thermal Cycling & Corrosion Validation Testing
Sample bearings undergo combined thermal cycling and salt spray testing to validate performance under the dual heat and corrosion exposure profile.
Testing & Certifications
Comprehensive testing protocols for high temperature stainless bearing validation.
1
Thermal Cycling Endurance Test
Bearings undergo repeated heating and cooling cycles to the rated maximum temperature to validate lubricant stability and dimensional consistency.
2
High-Temperature Grease Film Retention Test
Grease samples are tested at elevated temperature to confirm lubricating film strength is maintained throughout the rated operating range.
3
ASTM B117 Salt Spray Corrosion Testing
Standard salt spray testing confirms the stainless raceway material maintains full corrosion resistance regardless of the high-temperature lubrication specification.
4
Cage Material Thermal Stability Test
Cage material is tested at elevated temperature to confirm dimensional stability and absence of softening or deformation under rated thermal conditions.
5
Running Torque at Operating Temperature
Torque is measured at the bearing's actual rated operating temperature to confirm speed and torque performance meet application requirements.
6
Solid Lubricant Film Adhesion Test
For solid lubricant configurations, dry film adhesion to the raceway surface is verified to ensure consistent lubrication performance throughout bearing life.
High Temperature Stainless vs Standard Corrosion Resistant Bearing Comparison
Understand when combined heat and corrosion engineering is necessary.
| Feature | Standard Corrosion Resistant Stainless | High Temperature Stainless (Our Grade) |
|---|---|---|
| Grease Temperature Limit | 120-130°C | 200°C (Grease) / 350°C+ (Solid Lube) |
| Clearance Engineering | Standard Class | Thermal-Expansion Compensated |
| Cage Material | Standard Steel/Nylon | Brass, Bronze, or Heat-Stabilized |
| Corrosion Resistance | Full | Full, Maintained at Temperature |
| Best Application | Wet/Chemical, Moderate Temp | Combined Heat + Corrosion Exposure |
| Cost Multiplier | 1.0x (baseline) | 1.20-1.35x |
Expert Insight: Standard corrosion resistant stainless bearings remain the correct and more economical choice for wet or chemical exposure at moderate temperatures where conventional grease performs adequately. Once operating temperature rises above approximately 120-130°C alongside continued corrosion exposure—ovens, autoclaves, kiln-adjacent equipment—only bearings engineered specifically with high-temperature lubrication and thermally compensated clearance will avoid the premature grease breakdown and clearance-related seizure risk that a standard stainless bearing would experience in this combined-stress environment.
Quality Creates The Future
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.02 Flexible Production Capacity:With an advanced production base of 8,700 square meters and rich technical experience, we are able to respond quickly to customer needs, whether it is small batch customization or large-scale mass production.
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.03 Quality Assurance:We strictly follow the GB/T 19001-2016/ISO9001:2015 quality management system. Each customized product undergoes strict quality inspection to ensure that it meets the high standards of customers.
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.04 Experienced Technical Team:Our internal technical team consists of experienced engineers and designers who can provide professional technical support to help you optimize product design and improve production efficiency.
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.05 Global Service Network:We have a stable supply chain and sales network around the world to ensure that your products can enter the market quickly and receive timely after-sales service.
About High Temperature Stainless Bearing Customization
High temperature stainless steel bearings can be engineered in lubrication type, clearance class, and cage material to match your specific combined heat and corrosion exposure profile. We provide full thermal engineering support from specification through validation testing.
- 1Thermal & Corrosion Profile Assessment: Review your equipment's continuous and peak operating temperature alongside chemical or humidity exposure to define specification requirements.
- 2Lubrication Type Selection: Confirm PTFE/synthetic grease or solid lubricant configuration based on your specific temperature range and speed requirements.
- 3Thermal Clearance Calculation: Calculate custom clearance class based on your housing material and expected operating temperature differential.
- 4Cage Material Selection: Select brass, bronze, or heat-stabilized polyimide cage based on your bearing's rated temperature and speed combination.
- 5Prototype Thermal Validation Testing: Sample bearings tested under simulated thermal cycling matched to your actual equipment's duty cycle.
- 6Production Lubrication Application Setup: Manufacturing processes configured for precise high-temperature grease or solid lubricant application.
- 7Batch Thermal & Corrosion Sampling: Ongoing thermal cycling and salt spray sampling throughout production to confirm consistent dual-resistance performance.
- 8Technical Documentation: Full thermal and corrosion test reports provided for your equipment's engineering and maintenance documentation records.
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CONTACT Us
+86-13362474260 +86-0574-63322565
No. 98 Xinlang Road, Langxia Street, Yuyao City, Zhejiang Province, China
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Wholesale High Temperature Stainless Steel Bearings Manufacturers