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

⚡ Quick Technical Datasheet:

Power OutputN/A

Max SpeedN/A

Voltage RatingN/A

Collet InterfaceER Standard

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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.

How is the rotational balancing calibrated on this spindle motor?

Every spindle motor is dynamically balanced in accordance with the ISO 1940 balancing standard to guarantee vibration-free running and maximum stability at high RPMs.

What are the runout tolerances of the shaft and collet interface?

The internal shaft taper maintains a runout accuracy tolerance of under 0.003mm (3 microns), maintaining precise tool concentricity and preventing premature cutter wear.

What cooling precautions are built-in to prevent heat exhaustion?

Built-in temperature dissipation channels support continuous water/liquid cooling circulation or forced fan airflow, preventing thermal expansion of components.

Is this spindle motor compatible with standard VFD inverters and collets?

Yes, the spindle supports direct electrical integration with standard variable frequency drives (VFD) and accepts industrial ER collets (ER11, ER20, ER25, or ER32) to match standard toolholder dimensions.

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Angular Contact Ceramic Ball Bearing H7007C-2RZ HQ1

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

⚡ Quick Technical Datasheet:

Power OutputN/A

Max SpeedN/A

Voltage RatingN/A

Collet InterfaceER Standard

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 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)

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