Angular Contact Ceramic Ball Bearing H7012AC-2RZ HQ1

The H7012AC-2RZ HQ1 is a premium hybrid angular contact ball bearing engineered for high-speed, high-load industrial applications. Featuring a 60mm bore and 95mm outside diameter, this bearing integrates aerospace-grade Silicon Nitride (Si3N4) ceramic balls with high-carbon chrome steel rings. The 'AC' contact angle is specifically designed for enhanced axial load handling without sacrificing high-speed limiting capabilities, which reach 22,200 RPM with grease lubrication. Ceramic balls are significantly lighter and harder than steel, reducing centrifugal forces and internal friction while virtually eliminating the risk of adhesive wear. Certified to P4/HQ1 precision standards, this bearing provides the thermal stability and electrical insulation required for advanced CNC spindles, automotive powertrains, and precision robotics.

Hybrid Silicon Nitride (Si3N4) Ball Architecture
60mm Bore x 95mm OD x 18mm Width
22,200 RPM Limiting Speed (Grease)
Precision P4 Grade for industrial accuracy
16.2 KN Basic Dynamic Load (Cr) rating
2RZ High-efficiency non-contact seals

⚡ 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 0.41 kg \| sealingType: 2RZ (Non-contact) \| precisionClass: P4 / HQ1
INSIDE DIAMETER	60 mm
OUTSIDE DIAMETER	95 mm
WIDTH DIMENSION	18 mm
MAX SPEED GREASE	22200 RPM
BASIC LOAD RATING CR	16.2 KN
BASIC LOAD RATING COR	14.4 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
High-Load CNC Spindle Assemblies	Machine Tool Manufacturing
Automotive Powertrains and Turbochargers	Aerospace and Defense Engineering
Aerospace Rotating Systems	Automotive and Performance Motorsports
Precision Robotics and Industrial Automation	Industrial Automation and Robotics
High-Frequency Induction Motors	General Precision Engineering
Large-Format Precision Rotating Tables	General Engineering

Technical FAQ & Operational Guide

What is the limiting speed of the H7012AC-2RZ HQ1?

This hybrid ceramic bearing is designed for a grease-lubricated limiting speed of up to 22,200 RPM.

How does the 'AC' angle benefit high-load applications?

The 'AC' contact angle is optimized for a higher axial load capacity. Combined with the hardness of ceramic balls, it allows the bearing to handle significant thrust forces while maintaining high-speed stability.

What are the dimensions of this 60mm bearing?

The H7012AC-2RZ HQ1 features an inside diameter of 60mm, an outside diameter of 95mm, and a width of 18mm.

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 H7012AC-2RZ HQ1

Hybrid Silicon Nitride (Si3N4) Ball Architecture

60mm Bore x 95mm OD x 18mm Width

22,200 RPM Limiting Speed (Grease)

Precision P4 Grade for industrial accuracy

16.2 KN Basic Dynamic Load (Cr) rating

2RZ High-efficiency non-contact seals

⚡ 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 0.41 kg | sealingType: 2RZ (Non-contact) | precisionClass: P4 / HQ1

INSIDE DIAMETER

60 mm

OUTSIDE DIAMETER

95 mm

WIDTH DIMENSION

18 mm

MAX SPEED GREASE

22200 RPM

BASIC LOAD RATING CR

16.2 KN

BASIC LOAD RATING COR

14.4 KN

BEARING TYPE

Angular Contact Hybrid Ceramic

BALL MATERIAL

Silicon Nitride (Si3N4)

RING MATERIAL

High-Carbon Chrome Steel (GCR15)

Usage Scenario

Target Industry

High-Load CNC Spindle Assemblies

Machine Tool Manufacturing

Automotive Powertrains and Turbochargers

Aerospace and Defense Engineering

Aerospace Rotating Systems

Automotive and Performance Motorsports

Precision Robotics and Industrial Automation

Industrial Automation and Robotics

High-Frequency Induction Motors

General Precision Engineering

Large-Format Precision Rotating Tables

General Engineering