Angular Contact Ceramic Ball Bearing H7002C-2RZ HQ1

The H7002C-2RZ HQ1 is a pinnacle of micro-bearing engineering, designed for ultra-high-speed applications where standard steel bearings fail. By integrating aerospace-grade Silicon Nitride (Si3N4) ceramic balls with precision-ground steel rings, this hybrid bearing achieves an incredible grease-lubricated limiting speed of 81,700 RPM. The 15mm bore and 32mm outside diameter make it the ideal choice for micro-CNC spindles, high-frequency dental handpieces, and precision optical equipment. The ceramic balls are 58% lighter than steel, which virtually eliminates centrifugal ball loading and internal heat generation at extreme velocities. Certified to P4/HQ1 precision standards, this bearing offers unmatched thermal stability, low vibration, and natural electrical insulation for sensitive high-speed systems.

Hybrid Silicon Nitride (Si3N4) Ceramic Ball technology
15mm Bore x 32mm OD x 9mm Width
Ultra-high limiting speed (81,700 RPM)
Precision P4 Grade for minimal runout
4.4 KN Basic Dynamic Load capacity
High-speed 2RZ non-contact shielding

Engineering Analysis & Technical Data

Technical Parameter	Specification Details
MECHANICAL	weight: approx 0.03 kg \| sealingType: 2RZ (Non-contact) \| precisionClass: P4 / HQ1
INSIDE DIAMETER	15 mm
OUTSIDE DIAMETER	32 mm
WIDTH DIMENSION	9 mm
MAX SPEED GREASE	81700 RPM
BASIC LOAD RATING CR	4.4 KN
BASIC LOAD RATING COR	2.2 KN
BEARING TYPE	Angular Contact Hybrid Ceramic
BALL MATERIAL	Silicon Nitride (Si3N4)
RING MATERIAL	High-Carbon Chrome Steel (GCR15)

Industrial Applications

Usage Scenario	Target Industry
Ultra-High-Speed Micro-CNC Spindles	Medical and Dental Technology
Dental and Medical High-Speed Handpieces	Electronics and PCB Manufacturing
High-Frequency PCB Drilling Equipment	Precision Machine Tooling
Precision Optical and Scientific Instruments	Aerospace and Defense Instrumentation
Small-Scale Turbochargers and Micro-Turbines	Advanced Prototyping and R&D
High-Speed Robotics and Precision Actuators	General Engineering

Technical FAQ

What is the limiting speed for the H7002C-2RZ HQ1?

This ultra-high-speed micro-bearing is rated for an exceptional limiting speed of 81,700 RPM when used with high-speed grease lubrication.

How does the ceramic ball improve stability at 80,000+ RPM?

At such high velocities, steel balls suffer from 'centrifugal skidding' and massive heat build-up. Ceramic balls (Si3N4) are 58% lighter, which minimizes these forces, resulting in 40% less heat and significantly higher rotational accuracy.

Is this bearing suitable for dental equipment?

Yes, its 15mm bore and 81,700 RPM rating, combined with the hygienic and durable properties of ceramic, make it a premier choice for high-speed dental handpieces and surgical tools.

Detailed Overview of Angular Contact Ceramic Ball Bearing H7002C-2RZ HQ1

Advanced Engineering & Integration

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