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コンタクトパーソン :
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電話番号 :
86 15801087509
695 Full Ceramic Bearing High Speed Corrosion Resistant Electrically Insulated for Harsh Environments
| 起源の場所 | 中国 |
|---|---|
| ブランド名 | CSQ |
| 証明 | FDA,REACH,ROHS,ISO9001,ISO14001,ISO45001 |
| モデル番号 | カスタマイズされた |
| 最小注文数量 | 5000個 |
| 価格 | negotiable |
| パッケージの詳細 | フォーム+カートムボックス |
| 受渡し時間 | 20～45営業日 |
| 支払条件 | T/T |
| 供給の能力 | 1週間あたり10000個 |
商品の詳細
| 精度 | P3/P4/P5 | 製造工程 | 静水圧プレスおよび焼結 |
|---|---|---|---|
| 応用 | 食糧/化学薬品/自動車産業 | 材料 | ジルコニアセラミック |
| 色 | 白いですかオフホワイト | 使用 | セラミック・ベアリング |
| ハイライト | full ceramic bearing high speed,corrosion resistant ceramic bearing,electrically insulated zirconia ceramic bearing |
||
製品の説明
695 Full Ceramic Bearing High Speed Corrosion Resistant Electrically Insulated Non Magnetic Self Lubricating Long Life
Product Overview
The 695 Zirconia Full Ceramic Bearing is a precision miniature deep-groove ball bearing engineered with rings and rolling elements manufactured entirely from zirconium dioxide (ZrO₂) ceramic, paired with a PTFE (polytetrafluoroethylene) retainer as standard configuration. The bearing conforms to metric size 695: 5mm inner diameter × 13mm outer diameter × 4mm width. Its all-ceramic construction delivers superior electrical insulation, non-magnetic properties, corrosion resistance, and self-lubricating characteristics, making it an ideal replacement for conventional steel bearings across demanding applications.
Core Advantages of Zirconia Ceramic Material
Zirconia (ZrO₂) is an advanced ceramic material whose unique physical and chemical properties underpin the superior performance of full ceramic bearings.
High Hardness & Wear Resistance
Zirconia ceramic attains hardness up to 1200 HV, significantly exceeding that of bearing steel (approximately 700-800 HV). Under sustained high-speed rotation and repeated contact motion, the hard ceramic surface effectively resists abrasive wear, maintaining dimensional accuracy and operational stability. Ceramic bearings typically deliver 3 to 5 times the service life of steel bearings.
Exceptional Corrosion Resistance
Zirconia exhibits outstanding chemical stability, resisting attack from strong acids, alkalis, inorganic salts, and seawater. While conventional steel bearings rapidly corrode in chemical processing, electroplating, and marine environments, zirconia full ceramic bearings operate reliably without protective coatings.
Complete Electrical Insulation & Non-Magnetic Properties
Zirconia ceramic is a natural insulator with high electrical resistivity, preventing arc damage to bearing raceways and rolling elements. Additionally, its non-magnetic nature prevents the attraction of magnetic particles, eliminating premature spalling and noise caused by contaminant ingress.
Low Friction & Oil-Free Self-Lubrication
Zirconia ceramic exhibits a low coefficient of friction and inherent self-lubricating behavior. In ultra-high vacuum or environments where conventional lubrication is impractical, full ceramic bearings continue to operate reliably through the material's intrinsic lubricity.
Excellent High/Low Temperature Performance
Zirconia has a low coefficient of thermal expansion (approximately one-third that of steel), maintaining dimensional stability from 100°C to 600°C without significant thermal distortion. At cryogenic temperatures (e.g., -30°C), ceramic materials retain their mechanical properties.
Lightweight Construction
Zirconia ceramic density is approximately 6.0 g/cm³, compared to 7.8 g/cm³ for bearing steel. The 695 full ceramic bearing weighs approximately 1.9 grams—about 76% of the equivalent steel bearing (≈2.5g). Lower mass translates to reduced centrifugal inertia.
695 Zirconia Full Ceramic Bearing - Product Advantages
High-Speed Capability
The all-ceramic construction enables exceptional rotational speed potential. The 695 bearing achieves oil-lubricated limiting speeds up to 53,000 rpm, substantially exceeding comparable steel bearings. The low density, low friction coefficient, and favorable elastic modulus of ceramic materials effectively suppress heat generation and vibration at high speeds.
Reliable in Harsh Environments
The 695 full ceramic bearing performs reliably under the following extreme conditions:
- Highly corrosive environments: Chemical equipment, electroplating lines, seawater-contact components
- High-temperature operations: Furnace drives, plastics machinery, high-temperature motors (operating range 100-600°C)
- Vacuum conditions: Semiconductor tools, aerospace mechanisms
- Lubricant-starved or dry-running conditions: Food processing, medical devices, optical instruments
Extended Service Life & Cost Efficiency
Zirconia ceramic bearings deliver 3 to 5 times the service life of steel bearings. With a dynamic load rating of 1.35 kN and static load rating of 0.52 kN, combined with ceramic wear resistance, the 695 significantly reduces downtime, spare parts inventory, and scrap rates.
Low Noise & Low Vibration
The finely polished ceramic rolling contact surfaces minimize friction and operating noise, achieving reductions of 2-3 dB compared to conventional ball bearings. This makes the bearing ideal for precision instruments, optical devices, and high-speed spindles where vibration control is critical.
Application Fields
The 695 zirconia full ceramic bearing is widely used in:
- High-speed motors and spindles (medical handpieces, dental drills, printing machinery)
- Chemical pumps, valves, and fluid handling equipment
- Electroplating and electronics manufacturing equipment
- Precision instruments and optical devices
- Food processing machinery (oil-free self-lubrication required)
- Cryogenic engineering and aerospace equipment
Installation & Handling Notes
Ceramic materials exhibit low thermal expansion, high elastic modulus, but lower fracture toughness than steel—requiring careful attention during installation. Recommendations:
- Precisely control housing and shaft fit tolerances to avoid excessive interference that may crack ceramic rings
- Use specialized tools during installation; avoid impact or shock loading
- When lubrication is required, select lubricants compatible with ceramic materials
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