CNC Tool Holder Wrench Set (ER/GSK/GER/Hook Head/Ball Spanner)

CNC Tool Holder Wrench Set (ER/GSK/GER/Hook Head/Ball Spanner)

Complete set of high-strength CNC tool holder wrenches, including ER-A/ER-M/ER-UM/Hook Head/Ball Spanner types, for quick and safe tightening of collet nuts and tool holders.
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Description

CNC tool holder wrenches are manufactured from high-strength carbon steel with overall quenching and black oxide treatment, the essential tools for installing and replacing cutting tools on CNC milling machines and machining centers.
  1. High-strength steel construction with hardened working surfaces provides excellent durability and resistance to wear and deformation.
  2. Ergonomic non-slip handle design ensures comfortable grip and safe operation, reducing hand fatigue during prolonged use.
  3. Complete range of types and sizes covers all common ER/GSK/GER collet nuts and tool holders on the market.
  4. Precision-machined jaw profiles ensure perfect fit with nut grooves, preventing slippage and damage to nuts and tool holders.
  5. Available in individual sizes or complete sets to meet different workshop requirements.
  6. Lightweight and compact design for easy storage and portability.

Complete Specification Table (Unit: mm)

ER-A Spanner

Model Nut diameter L V K Price
ER11-A 19 110 40 17
ER16-A 28 120 53 25
ER20-A 34 130 60 30

ER-M Spanner

Model Nut diameter L V K Price
ER8-M 12 70 12 7.5
ER11-M 16 90 17 11
ER16-M 22 110 23 15
ER20-M 28 120 29 19.5
ER25-M 35 130 36 25

ER-UM Spanner (with Red Handle)

Model Nut diameter L V K Price
ER16-UM 32 180 40 26
ER20-UM 35 190 55 30
ER25-UM 42 210 60 35
ER32-UM 50 250 72 45
ER40-UM 63 290 86 58
ER50-UM 78 350 105 73

Hook Head Spanner (with Red Handle)

Model Applicable holder and nut L Price
18-21 EOC6 90
22-26 EOC8 125
28-32 EOC10 140
34-36 EOC12 154
38-42 E0C16 7316A APU08 168
45-52 EOC20 ER25-UM 7316B APU13 190
55-62 EOC25 ER32-UM APU13 APU16 C20 C22 C25 210
68-72 EOC32 ER40-UM 230
78-85 EOC40 C32 ER50-UM 240
100-110 EOC50 C42 JXT25-50 250

Ball Spanner

Model Specifications D L Price
WH-GSK06 GSK06 19.5 120
WH-GSK10 GSK10 30 152.5
WH-GSK16 GSK16 40 200
WH-GSK20 GSK20 48 200
WH-GSK25 GSK25 55 210
WH-GER16 GER16 30 150
WH-GER20 GER20 35 160
WH-GER25 GER25 40 181
WH-GER32 GER32 50 200

Parameter Explanation

  • Model : Wrench type and matching collet nut size
  • Nut diameter : Outer diameter of the collet nut that the wrench fits
  • L : Total length of the wrench
  • V : Width of the wrench jaw opening
  • K : Depth of the wrench jaw
  • Applicable holder and nut : List of tool holders and nuts that the hook head spanner is compatible with
  • Specifications : Type of collet system that the ball spanner fits
  • D : Inner diameter of the ball spanner

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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