Angular Contact Ceramic Ball Bearing H7011C-2RZ HQ1

The Angular Contact Ceramic Ball Bearing H7011C-2RZ HQ1 is a high-performance hybrid bearing engineered for precision CNC spindles and demanding industrial applications. Featuring silicon nitride (Si3N4) ceramic balls, this bearing offers lower density and higher hardness than steel alternatives, resulting in significantly reduced centrifugal force at high speeds. With a limiting speed of 26500 RPM (grease) and enhanced corrosion resistance, it is the ideal choice for maintenance-free, long-life rotating components.

Hybrid Ceramic Construction (Steel Rings + Ceramic Balls)
Contact Angle optimized for high-speed axial loads
2RZ Non-contact seals for low torque and protection
Superior wear resistance and electrical insulation
Handles combined radial and axial loads efficiently
High stiffness and rigidity for precision rotation

Engineering Analysis & Technical Data

Technical Parameter	Specification Details
MECHANICAL	weight: 0.38 kg \| sealingType: 2RZ (Non-contact rubber seal) \| precisionClass: P4 / HQ1
INSIDE DIAMETER	55 mm
OUTSIDE DIAMETER	90 mm
WIDTH DIMENSION	18 mm
MAX SPEED GREASE	26500 RPM
BASIC LOAD RATING CR	17 KN
BASIC LOAD RATING COR	14.5 KN
BEARING TYPE	Angular Contact Hybrid Ceramic
BALL MATERIAL	Ceramic (Silicon Nitride)
RING MATERIAL	High-Carbon Chromium Steel

Industrial Applications

Usage Scenario	Target Industry
High-Speed CNC Spindles	Aviation & Defense
Aerospace Turbines and Equipment	Automotive Manufacturing
Automotive High-Performance Components	Machine Tool Industry
Medical Precision Instruments	Renewable Energy (Wind Turbines)
High-Frequency Motors and Generators	Pharmaceutical Machinery
Industrial Vacuum Pumps	General Engineering

Technical FAQ

What are the benefits of ceramic balls in H7011C bearings?

Ceramic balls are 40% less dense than steel, reducing centrifugal force and heat generation at high speeds, which allows for a higher RPM and longer bearing life.

Can this bearing handle both radial and axial loads?

Yes, as an angular contact bearing, it is specifically designed to handle combined loads, though it must be installed in a pair or pre-loaded for pure axial stability.

What does the 2RZ designation mean?

2RZ indicates that the bearing has non-contact rubber seals on both sides, which provides protection against contaminants while maintaining low friction for high speeds.

Detailed Overview of Angular Contact Ceramic Ball Bearing H7011C-2RZ HQ1

Advanced Engineering & Integration

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This Spindle Bearing is preferred for Ceramic (Si3N4) balls for lower friction and heat generation, High-speed performance up to 26500 r/min, Exceptional durability in corrosive environments, P4/P2 precision grade standards for minimal runout, Trusted supplier of industrial-grade spindle bearings in India.

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