7015 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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7015 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 7015 CE/HCP4AQBCA is a high-precision quadruplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This metric system bearing features a back-to-back quadruplex (QBC) matched arrangement, enabling it to withstand combined radial and axial loads from multiple directions simultaneously. Manufactured to P4A tolerance class with an extra light preload (Class A), it delivers superior running accuracy and rotational stability, making it ideal for high-speed, high-rigidity spindles and precision machinery.
7015 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
- 7015: Basic bearing series, indicating a 75 mm bore, 115 mm OD, and 20 mm nominal width.
- C: 15° contact angle, optimized for high-speed operation and axial load capacity.
- E: Optimized internal design for enhanced performance.
- HC: Hybrid Ceramic construction, featuring steel rings and ceramic balls.
- P4A: High-precision tolerance class, exceeding ABEC 7/ISO P4 standards.
- QBC: Quadruplex Back-to-Back matched set arrangement, consisting of 4 pre-matched bearings.
- A: Extra light preload classification.
7015 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates an extremely rigid bearing system, effectively resisting complex combined loads and moments. This configuration provides superior axial and radial stiffness, crucial for maintaining precision under heavy cutting forces or operational stresses.
High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal forces), phenolic resin cage (lightweight with excellent sliding properties), and 15° contact angle enables exceptional limiting speeds up to 24,000 rpm. The hybrid construction also reduces heat generation at high velocities.
Precision Engineering: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0), this bearing ensures minimal runout and vibration for ultra-precise applications. The extra light preload eliminates internal clearance while maintaining low operating torque.
Advanced Material Selection: Ceramic balls provide superior wear resistance, electrical insulation, and reduced thermal expansion compared to steel. The phenolic cage offers excellent strength-to-weight ratio and operates effectively at high temperatures.
7015 CE/HCP4AQBCA Bearing Typical Application Areas
This high-precision quadruplex bearing is specifically engineered for applications demanding the highest levels of accuracy, rigidity, and speed:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Aerospace Components
- Medical Equipment: High-speed dental handpieces, surgical robots, and imaging systems
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
- High-Frequency Spindles: PCB drilling, micromachining, and engraving applications
