CE--608-SiSiPE

CE-608-SiSiPE is a high-precision full ceramic bearing featuring Si₃N₄ (silicon nitride) rings and balls with a PEEK (polyetheretherketone) cage. Silicon nitride bearings leverage exceptional strength, thermal shock resistance, and low friction, making them ideal for high-speed, high-load, and extreme-temperature applications. They outperform steel bearings in durability and efficiency, offering superior wear resistance and the ability to operate without lubrication. Widely used in aerospace, automotive, and precision machinery, they ensure reliable performance under demanding conditions.

◆ Basic Dimensions and Weight

Model CE-608-SiSiPE (standard 608 series). Dimensions in mm, weight in kg.

Mounting dimensions: da min = 10.5 mm, Da max = 19.5 mm, ra max = 0.3 mm.
   Reference weight: 0.012 kg (Si₃N₄ full ceramic).

◆ Material and Design

● Rings & Balls – Si₃N₄ (Silicon Nitride) – Advanced ceramic with high fracture toughness, excellent thermal shock resistance, and low density (~3.2 g/cm³). Vickers hardness 1400–1700 HV10, flexural strength ≥800 MPa. Thermal expansion coefficient 3.2×10⁻⁶/K (lower than steel), dielectric strength >15 kV/mm, non-magnetic, non-conductive.

● Cage – PEEK (Polyetheretherketone) – High-performance engineering thermoplastic offering excellent chemical resistance, low moisture absorption, and high-temperature stability up to ~260°C continuous (300°C short-term). PEEK provides lower friction and better wear resistance than traditional cages, ideal for high-speed and chemically aggressive environments.

● Design Features – Standard deep groove geometry suitable for radial and light axial loads. Optimized for high-speed operation with low noise and vibration characteristics.

◆ Core Performance Advantages

● Exceptional Strength & Toughness – Silicon nitride offers superior fracture toughness and impact resistance compared to other ceramics, ensuring durability under shock loads.

● Thermal Shock Resistance – Excellent resistance to rapid temperature changes, ideal for applications with fluctuating thermal conditions.

● Low Friction & High Speed – Very low friction coefficient (0.03–0.08), enabling higher rotational speeds than steel bearings with reduced heat generation.

● Extreme Temperature Range – Operates from -200°C to +800°C (rings/balls) and up to +260°C continuous for PEEK cage. Lower thermal expansion ensures stable clearances.

● Corrosion & Wear Resistance – Resists most acids, alkalis, and organic solvents. Outperforms steel in wear resistance, extending service life in abrasive environments.

● Electrical Insulation – Non-conductive and non-magnetic, preventing electrolytic corrosion and arcing damage in electrical equipment.

● Maintenance-Free Operation – Can run dry without lubrication, reducing maintenance costs and contamination risks.

◆ Application Areas

● Aerospace – Actuators, turbine components, flight control systems – lightweight, high-temperature stability.

● Automotive – Electric vehicle motors, turbochargers, fuel pumps – high-speed and corrosion-resistant.

● Precision Machinery – High-speed spindles, machine tool bearings, grinding spindles – high rigidity and accuracy.

● Semiconductor & Cleanroom – Vacuum robots, wafer handling – particle-free, non-magnetic.

● Medical Equipment – Surgical handpieces, dental drills, centrifuges – biocompatible and lubrication-free.

● Chemical Processing – Pumps, agitators, mixers – corrosion resistant to aggressive chemicals.

◆ Technical Data