Internal Expansion Lock Ø95x72.5mm, with Bottom Zero Point Bolt

Internal Expansion Lock Ø95x72.5mm, with Bottom Zero Point Bolt - Image 1

Internal Expansion Lock Ø95x72.5mm, with Bottom Zero Point Bolt - Image 2

Internal Expansion Lock Ø95×72.5mm, with Bottom Zero Point Bolt

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Precision Internal Expansion Lock designed for CNC workholding, 5-axis machining, EDM workholding, and repeatable fixture setups. Built from hardened chrome steel with 44–52 HRC hardness, this compact holder provides ≤0.01mm repeatability and an internal expansion range of Ø20–22mm, with customization available based on application requirements. Its Ø95×72.5mm body and bottom zero point bolt interface support accurate positioning, stable internal clamping, and efficient fixture changeover.

SKU: RHS-ZP520015

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Description

This Ø95×72.5mm Internal Expansion Lock is designed for precision CNC workholding applications where parts need to be located and held from an internal bore. The internal expansion design provides secure holding from the inside of the workpiece, helping improve outside surface access for 5-axis machining, multi-sided machining, EDM workholding, and inspection setups.

Made from hardened chrome steel, the holder provides rigidity, wear resistance, and stable performance during repeated production use. The Ø20–22mm expansion range is suitable for precision bore clamping applications and can be customized based on specific workpiece requirements. With ≤0.01mm repeatability and a bottom zero point bolt interface, this internal expansion lock supports accurate fixture positioning, faster setup changes, and reliable performance in precision machining environments.

Specification	Value
Size	Ø95×72.5mm
Material	Chrome Steel
Product Type	Internal Expansion Lock
Mounting Interface	Bottom Zero Point Bolt
Hardness	44–52 HRC
Expansion Range	Ø20–22mm
Customization	Expansion size can be customized as required
Repeatability	≤0.01mm
Net Weight	1.30kg
Base Diameter	Ø95mm
Overall Height	72.5mm
Body Height Reference	50.5mm
Expansion Post Height Reference	25.6mm
Expansion Post Diameter Reference	Ø19.4mm
Mounting Type	Zero Point Bolt Mounting from Bottom