Angular Contact Ceramic Ball Bearing H7007C-2RZ HQ1
The H7007C-2RZ HQ1 is a premium hybrid angular contact ball bearing engineered for ultra-high-performance spindle applications. By combining aerospace-grade Silicon Nitride (Si3N4) ceramic balls with high-carbon chrome steel rings, this bearing achieves a remarkable grease-lubricated limiting speed of 40,800 RPM. The ceramic balls are 58% lighter than steel, significantly reducing centrifugal force and internal friction during high-speed rotation. With a 35mm bore and 62mm outside diameter, it offers a high basic dynamic load rating of 11.2 KN. This bearing is the ideal choice for high-speed CNC milling spindles, sophisticated robotics, and high-frequency electric motors where thermal stability, low vibration, and electrical insulation are critical requirements.
- Hybrid Silicon Nitride (Si3N4) Ceramic Ball technology
- 35mm Bore x 62mm OD x 14mm Width
- Ultra-high limiting speed (40,800 RPM)
- P4 Grade precision for machining accuracy
- 11.2 KN Basic Dynamic Load capacity
- High-speed 2RZ non-contact shielding
Comparative Technical Spindle Motor Configurations Matrix
Use the structural data catalog matrix below to evaluate power outputs, maximum RPM, operating voltages, and cooling styles across standard TriQuench CNC spindle models.
| Spindle Capacity | Operating Speed | Operating Voltage | Cooling System |
|---|---|---|---|
| 12.0 kW | 18,000 RPM | 380 V | Water-Cooled |
| 0.8 kW | 24,000 RPM | 220 V | Air-Cooled (Long Shaft) |
| 3.7 kW | 40,000 RPM | 380 V | Water-Cooled ISO20 |
| 9.0 kW | 18,000 RPM | 380 V | Air-Cooled |
Technical Specifications
| Technical Parameter | Engineering Specification Value |
|---|---|
| MECHANICAL | weight: approx 0.14 kg | sealingType: 2RZ (Non-contact) | precisionClass: P4 / HQ1 |
| INSIDE DIAMETER | 35 mm |
| OUTSIDE DIAMETER | 62 mm |
| WIDTH DIMENSION | 14 mm |
| MAX SPEED GREASE | 40800 RPM |
| BASIC LOAD RATING CR | 11.2 KN |
| BASIC LOAD RATING COR | 7.9 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 CNC Milling Spindles | Precision Engineering and Tooling |
| Industrial Robotics and Precise Positioning Systems | Aerospace and Defense |
| High-Frequency Electric Motors and Blowers | Medical Technology Manufacturing |
| Precision Grinding Machine Spindles | Automotive and Turbocharger Engineering |
| Aerospace Instrumentation and Gyroscopes | Electronics Research and Development |
| Medical and Semiconductor Manufacturing Equipment | General Engineering |
Technical FAQ & Operational Guide
Why use Silicon Nitride (ceramic) balls for 40,000+ RPM applications?
Silicon Nitride is much lighter and harder than steel. This reduces centrifugal forces and prevents 'skidding' at high speeds, while generating significantly less heat, allowing the bearing to operate reliably at 40,800 RPM.
What does the 2RZ seal indicate for this model?
2RZ refers to double non-contact seals. They provide high-speed protection against dust and contaminants without creating the friction and heat of traditional contact seals, preserving the bearing's maximum RPM capability.
Does this bearing protect against electrical currents in spindles?
Yes. The ceramic balls are an electrical insulator, making this bearing an excellent choice for electric motors and spindles where stray currents can cause electrical erosion in standard steel bearings.
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