ER25 High-Precision Spring Collet | DIN6499B Industrial Grade Chuck

The TriQuench ER25 High-Precision Spring Collet is an essential component for elite CNC machining environments where runout precision is critical. Manufactured from premium 65Mn spring steel and hardened to HRC44-48, these collets provide superior clamping force combined with excellent elasticity. Adhering strictly to the DIN6499B standard, each collet is precision-ground to ensure minimal T.I.R. (Total Indicated Runout), significantly extending tool life and improving surface finish quality. The unique double-slit design allows for a wide clamping range while maintaining concentricity, making it perfect for high-speed routing, drilling, and milling operations. Whether used in a high-frequency spindle or a standard CNC tool holder, our ER25 collets deliver the reliability and repeatable performance required for professional-grade fabrication.

High precision T.I.R. for vibration-free high-speed routing
Forged from premium 65Mn steel for maximum tensile strength
Hardened to HRC44-48 for superior wear resistance and longevity
Strict compliance with DIN6499B industrial quality standards
Double-slit collapse design for secure and uniform clamping force
Fully ground surfaces for optimal contact between spindle and tool
Optimized for high-speed spindles (up to 24,000 RPM)

⚡ 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
MODEL NUMBER	ER25
MATERIAL GRADE	65Mn Spring Steel
HARDNESS RATING	HRC44-48
STANDARD COMPLIANCE	DIN6499B
RUNOUT TOLERANCE	≤ 0.008mm (Standard Precision)
MECHANICAL	outerDiameter: 26 mm \| totalHeight: 34 mm \| clampingRange: 1mm to 16mm (available sizes) \| weight: 0.07 kg (approx)

Industrial Applications

Usage Scenario	Target Industry
CNC Router Spindle Tool Clamping	Machine Tool Manufacturing
High-Speed Milling and Drilling Operations	Furniture and Signage Fabrication
CNC Engraving and Wood Carving Systems	Aerospace and Automotive Engineering
Metal Fabrication and Lathe Tooling	Precision Tool and Die Shops
Precision Automated Machining Centers	Electronic Component Manufacturing
PCB Drilling and Prototyping	General Engineering
Industrial Component Manufacturing	General Engineering

Technical FAQ & Operational Guide

What is the importance of the DIN6499B standard?

DIN6499B is the international standard for ER collets, ensuring specific dimensional accuracy, material quality, and runout tolerances. Compliance with this standard guarantees that our collets will fit perfectly into any standard ER25 tool holder or spindle.

How does the hardness of HRC44-48 benefit my machining?

A hardness of HRC44-48 ensures that the collet is tough enough to resist wear from repeated clamping cycles while remaining elastic enough to grip the tool shank securely without cracking.

How often should I clean my ER25 collets?

Collets should be cleaned with a soft brush or compressed air after every tool change. Debris inside the collet slits can cause runout and imbalance, leading to poor finish quality and tool breakage.

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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ER25 High-Precision Spring Collet | DIN6499B Industrial Grade Chuck

High precision T.I.R. for vibration-free high-speed routing

Forged from premium 65Mn steel for maximum tensile strength

Hardened to HRC44-48 for superior wear resistance and longevity

Strict compliance with DIN6499B industrial quality standards

Double-slit collapse design for secure and uniform clamping force

Fully ground surfaces for optimal contact between spindle and tool

Optimized for high-speed spindles (up to 24,000 RPM)

⚡ 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

MODEL NUMBER

ER25

MATERIAL GRADE

65Mn Spring Steel

HARDNESS RATING

HRC44-48

STANDARD COMPLIANCE

DIN6499B

RUNOUT TOLERANCE

≤ 0.008mm (Standard Precision)

MECHANICAL

outerDiameter: 26 mm | totalHeight: 34 mm | clampingRange: 1mm to 16mm (available sizes) | weight: 0.07 kg (approx)

Usage Scenario

Target Industry

CNC Router Spindle Tool Clamping

Machine Tool Manufacturing

High-Speed Milling and Drilling Operations

Furniture and Signage Fabrication

CNC Engraving and Wood Carving Systems

Aerospace and Automotive Engineering

Metal Fabrication and Lathe Tooling

Precision Tool and Die Shops

Precision Automated Machining Centers

Electronic Component Manufacturing

PCB Drilling and Prototyping

General Engineering

Industrial Component Manufacturing

General Engineering