HDC Precision Slotted Hydraulic Collet Replacement Liners for Hydraulic Chucks

High-toughness spring steel multi-slit hydraulic elastic sleeves, perfectly compatible with all Hoshing BT / ER / HSK HDC hydraulic expansion tool holders. Uniform elastic shrinkage design delivers ultra-low radial runout; cost-saving replaceable consumable liners for clamping straight-shank cutters, widely adopted for mold high-speed finish milling and precision deep-hole drilling.

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Hydraulic Tool Holder

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Description

This HDC hydraulic collet sleeve is a dedicated matching replacement liner for the full HDC Hydraulic Tool Holder series. It is fabricated from high-toughness spring steel through precision wire cutting, full hard grinding and multiple stress-relief aging treatments. The multi-slit elastic structure achieves uniform shrinkage under hydraulic pressure, providing the identical ultra-precision clamping performance as the integrated inner bore of original hydraulic chucks.

Multi-slit Symmetric Elastic Expansion Structure

Long split grooves are evenly distributed around the cylindrical body. When hydraulic oil pressure acts on the outer wall, the inner clamping bore shrinks uniformly to fully attach to straight-shank cutters without unilateral offset. Radial runout is controlled ≤0.002mm, maintaining stable concentricity even after thousands of repeated clamping cycles.
Fatigue-resistant High-toughness Spring Steel Base Material

Adopts high-quality spring steel blanks with multiple stress-relief aging processes to eliminate internal processing stress, effectively preventing fatigue cracking after long-term expansion and contraction cycles. Surface hardening treatment improves scratch and abrasion resistance during frequent tool changes.
Complete Full-size Matching Range

Inner clamping diameters cover 3mm to 32mm, fully matching all Hoshing BT-HDC, ER-HDC and HSK-HDC hydraulic tool holders of corresponding bore specifications. The outer diameter of each series is unified to standard dimensions for direct plug-and-play replacement without modifying the hydraulic chuck main body.
Low-cost Quick-replace Consumable Fixture

When the inner bore of the sleeve is worn, only the collet liner needs to be replaced instead of the entire high-cost Hydraulic Tool Holder , greatly reducing the workshop’s fixture procurement cost. Disassembly and assembly require no special auxiliary tools for fast on-site replacement.
Universal Precision Machining Compatibility

Matches all HDC hydraulic clamping holders for high-speed mold mirror finish milling, deep precision hole drilling, graphite electrode processing and thin-wall aerospace alloy component machining.

Dimension Specification Note

The full standardized parameter table (including inner clamping diameter d1, outer sleeve diameter D, overall sleeve length L) is available upon request, with all sizes perfectly matched to BT / ER / HSK HDC hydraulic tool holders.

Model Naming Rule

Standard format:


            HDC-C[Inner Clamping Bore Diameter]

Example: HDC-C12

HDC-C: Hydraulic collet sleeve series code
12: Inner clamping hole diameter = 12mm

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.