S7018 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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S7018 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The S7018 CE/HCP4AQBCA is a precision quadruplex back-to-back angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This high-speed bearing features a ceramic ball construction and P4A super-precision tolerances, enabling it to handle combined loads with superior performance. Its compact, pre-matched set configuration ensures optimal preload and simplifies installation in high-rigidity spindle systems.
S7018 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
- S70: High-precision angular contact ball bearing series
- 18: Bore diameter code (90 mm)
- CE: Ceramic balls (Silicon Nitride) for reduced weight, higher speed capability, and longer service life
- HC: Phenolic resin cage suitable for high-speed operation
- P4A: Super-precision tolerance class exceeding ABEC 7/ISO P4, with restricted runout and dimensional variations
- QBC: Quadruplex Back-to-Back matched set of 4 bearings, providing maximum rigidity and moment load capacity
S7018 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Exceptional Rigidity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, making it ideal for precision machining applications.
High-Speed Capability: The combination of ceramic balls (reducing centrifugal forces) and a phenolic resin cage enables operation at limiting speeds up to 15,000 rpm, significantly higher than equivalent steel ball bearings.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing sustains substantial radial dynamic load rating of 21,510 lbf and radial static load rating of 28,575 lbf, efficiently managing combined radial and axial loads.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior rotational accuracy.
Pre-lubricated & Sealed: Factory-filled with grease lubrication and featuring sealed construction, the bearing offers maintenance-free operation within the specified temperature range of -30°C to 110°C.
S7018 CE/HCP4AQBCA Bearing Typical Application Areas
The S7018 CE/HCP4AQBCA is specifically engineered for high-performance applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and precision
- Precision Robotics: High-accuracy robotic arms and CNC automation systems
- Aerospace Systems: Gyroscopes, navigation equipment, and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical drill systems
- Test & Measurement: Precision rotary tables and coordinate measuring machines
