ER25 ER32 ER40 APU Wrench M Type CNC Collet Chuck Spanner
◎ UM type: High precision with four-tooth design, accurate meshing without slippage.
◎ M type: Suitable for removing nuts from ER type tool holders, tool shanks, and extension rods.
◎ Suitable for removing and clamping tool holder nuts and drill chucks.
◎ Convenient for use in engraving machines, CNC milling machines, spindle machines, and extension rods, for clamping and rotating nuts. Clear lettering, non-slip. The tool holder wrench is made of S2 high-hardness steel and heat- treated to achieve high hardness, high surface hardness, and strong wear resistance.
Hardness: HRC44-48
Product Name: ER CNC Wrench
Product Material: High-quality steel
Product Type: Type A, Type M, Type C, Type UM
Product Application: Used in engraving machines/electric spindles/spindle motors/extension rods/clamping nuts
Product Features: Simple rotary operation, high cost-performance ratio, sturdy and durable, comfortable grip
1.This product is not suitable for use on hydraulic cylinders
2.Do not use a hammer to hit the end of the wrench, otherwise it willcause the wrench head to split. This is an improper use.
3.Measure the outer diameter of the round nut. For example, if thediameter is 70mm, the available specifications are 68-72 or 78-85You can choose a wrench with a larger specification (78-85), so thatthe circled radius is larger and it is convenient to rotate. Open thenut.











