ERS Series Sealed Coolant Through Spring Collet (ER Type)

ERS Series Sealed Coolant Through Spring Collet (ER Type)

High-precision sealed ER collets with internal coolant passage, prevents coolant leakage, delivers high-pressure coolant directly to cutting edge, ideal for deep hole drilling and high-speed machining.
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Description

ERS series sealed coolant through spring collets are manufactured from high-quality spring steel with overall vacuum quenching and precision grinding, specially designed for internal coolant machining applications on CNC milling machines and machining centers.
  1. Integrated sealing structure effectively prevents coolant leakage, ensuring high-pressure coolant (up to 70bar) is delivered directly to the cutting edge for optimal cooling and chip evacuation.
  2. Ultra-high precision manufacturing ensures ≤0.008mm runout accuracy, delivering excellent machining precision and surface finish.
  3. High elasticity and fatigue resistance provide uniform clamping force and long service life, suitable for high-speed machining operations.
  4. Complete size range from ER11C to ER50C covers all common tool diameters from 2mm to 34mm, meeting various machining requirements.
  5. Standard 16° taper design is fully compatible with all mainstream ER collet chucks and tool holders on the market.
  6. Hardened and ground surface provides superior wear resistance and corrosion resistance.

Complete Specification Table (Unit: mm)

ER11C Range ER16C Range ER20C Range ER25C Range ER32C Range ER40C Range ER50C Range Price
3C 3-2.9 3C 3-2.9 3C 3-2.9 3C 3-2.9 3C 3-2.9 4C 4-3.9 12C 12-11.5
4C 4-3.9 4C 4-3.9 4C 4-3.9 4C 4-3.9 4C 4-3.9 5C 5-4.9 14C 14-13.5
4.5C 4.5-4.4 4.5C 4.5-4.4 5C 5-4.9 5C 5-4.9 5C 5-4.9 6C 6-5.9 16C 16-15.5
5C 5-4.9 5C 5-4.9 5.5C 5.5-5.4 6C 6-5.5 6C 6-5.9 7C 7-6.9 16.5C 16.5-16
5.5C 5.5-5.4 5.5C 5.5-5.4 6C 6-5.5 6.5C 6.5-6 7C 7-6.9 8C 8-7.9 17C 17-16.5
6C 6-5.9 6C 6-5.5 6.5C 6.5-6 7C 7-6.5 8C 8-7.5 9C 9-8.9 17.5C 17.5-17
6.5C 6.5-6.4 6.5C 6.5-6 7C 7-6.5 7.5C 7.5-7 8.5C 8.5-8 10C 10-9.5 18C 18-17.5
7C 7-6.9 7C 7-6.5 7.5C 7.5-7 8C 8-7.5 9C 9-8.5 10.5C 10.5-10 18.5C 18.5-18
7.5C 7.5-7 8C 8-7.5 8.5C 8.5-8 9.5C 9.5-9 11C 11-10.5 19C 19-18.5
8C 8-7.5 8.5C 8.5-8 9C 9-8.5 10C 10-9.5 11.5C 11.5-11 19.5C 19.5-19
8.5C 8.5-8 9C 9-8.5 9.5C 9.5-9 10.5C 10.5-10 12C 12-11.5 20C 20-19.5
9C 9-8.5 9.5C 9.5-9 10C 10-9.5 11C 11-10.5 12.5C 12.5-12 20.5C 20.5-20
9.5C 9.5-9 10C 10-9.5 10.5C 10.5-10 11.5C 11.5-11 13C 13-12.5 21C 21-20.5
10C 10-9.5 10.5C 10.5-10 11C 11-10.5 12C 12-11.5 13.5C 13.5-13 21.5C 21.5-21
11C 11-10.5 11.5C 11.5-11 12.5C 12.5-12 14C 14-13.5 22C 22-21.5
11.5C 11.5-11 12C 12-11.5 13C 13-12.5 14.5C 14.5-14 22.5C 22.5-22
12C 12-11.5 12.5C 12.5-12 13.5C 13.5-13 15C 15-14.5 23C 23-22.5
12.5C 12.5-12 13C 13-12.5 14C 14-13.5 15.5C 15.5-15 23.5C 23.5-23
13C 13-12.5 13.5C 13.5-13 14.5C 14.5-14 16C 16-15.5 24C 24-23.5
14C 14-13.5 15C 15-14.5 16.5C 16.5-16 24.5C 24.5-24
14.5C 14.5-14 15.5C 15.5-15 17C 17-16.5 25C 25-24.5
15C 15-14.5 16C 16-15.5 17.5C 17.5-17 25.5C 25.5-25
15.5C 15.5-15 16.5C 16.5-16 18C 18-17.5 26C 26-25.5
16C 16-15.5 17C 17-16.5 18.5C 18.5-18 26.5C 26.5-26
17.5C 17.5-17 19C 19-18.5 27C 27-26.5
18C 18-17.5 19.5C 19.5-19 27.5C 27.5-27
18.5C 18.5-18 20C 20-19.5 28C 28-27.5
19C 19-18.5 20.5C 20.5-20 28.5C 28.5-28
19.5C 19.5-19 21C 21-20.5 29C 29-28.5
20C 20-19.5 21.5C 21.5-21 29.5C 29.5-29
22C 22-21.5 30C 30-29.5
22.5C 22.5-22 30.5C 30.5-30
23C 23-22.5 31C 31-30.5
23.5C 23.5-23 31.5C 31.5-31
24C 24-23.5 32C 32-31.5
24.5C 24.5-24 32.5C 32.5-32
25C 25-24.5 33C 33-32.5
25.5C 25.5-25 33.5C 33.5-33
26C 26-25.5 34C 34-33.5

Parameter Explanation

  • Model Naming : ERXXC-Y, where XX indicates the ER collet series (e.g., ER32), Y indicates the clamping diameter, and C represents the coolant-through sealed type
  • Range : The range of tool shank diameters that the collet can securely hold (e.g., 8C = 8-7.5mm clamping range)
  • Sealing Structure : Integrated O-ring seal prevents coolant leakage under high pressure
  • Runout Accuracy : ≤0.008mm at 2×D from the collet face
  • Max Coolant Pressure : Up to 70bar (1000psi)

Applications

CNC Machining

Ideal for CNC lathe, milling and machining center operations, ensuring high-precision dimensional control and reliable tool holding for mass production.

Quality Control Labs

Suitable for quality inspection departments and calibration labs, providing accurate measurement data to verify product compliance with ISO and industry standards.

Mold & Die Making

Perfect for mold and die workshops, where micron-level precision tools and gauges are essential for complex cavity machining and final inspection.

OEM/ODM Projects

Customizable solutions for OEM and ODM manufacturing partners, offering tailored measuring tools and CNC accessories to meet unique production requirements.

Automotive Manufacturing

Designed for automotive component production lines, ensuring consistent precision and durability in engine parts, transmission components and assembly processes.

Aerospace & Precision Engineering

Ideal for aerospace and defense manufacturing, where ultra-high precision instruments and reliable tool holders meet strict quality and safety requirements.

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