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Products

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CNC Tool Holders and Collet Systems

Haozhi supplies CNC tool holders across BT, BBT, ISO and HSK interfaces with ER, SK and KR clamping systems. The range separates broad-range clamping, higher-torque holding and precision-oriented collet choices while maintaining controlled runout and dynamic balance.

Explore Our Tool Holder Range

BT-ER General-Purpose ER Tool Holder

BT-ER General-Purpose ER Tool Holder

The BT-ER is the broad-coverage option for common machining-center work. A 16-degree ER collet supports 1-30 mm h7 tools and quick tool changes across drilling, reaming, tapping, milling and engraving, with center-through coolant available through a suitable pull stud.

BT-SK High-Torque Collet Tool Holder

BT-SK High-Torque Collet Tool Holder

The BT-SK suits milling and drilling operations where torque transfer is more important than maximum clamping range. Its SK collet provides 1.5-times greater torque than other listed collet types, accepts 1-25 mm h7 tools and supports internal coolant.

BT-KR High-Precision KR Tool Holder

BT-KR High-Precision KR Tool Holder

The BT-KR is intended for users who prioritize collet precision retention and service life. KR collets use wear-resistant materials and controlled deformation, while PP-grade versions can reach radial runout within 1 μm for demanding high-speed machining.

BBT-ER Flexible ER Collet Tool Holder

BBT-ER Flexible ER Collet Tool Holder

The BBT-ER is the flexible clamping choice in the BBT group. Its ER collets accommodate a broad 1-30 mm h7 tool range for milling, drilling, tapping and engraving, while center-through coolant can be added through a compatible pull stud.

BBT-SK High-Torque Tool Holder

BBT-SK High-Torque Tool Holder

The BBT-SK is written for users selecting a torque-focused collet system on a BBT holder. The SK configuration increases clamping force for milling and drilling, supports h7 tools and can be arranged for internal coolant, separating it from the broader-range BBT-ER option.

ISO-KR Precision KR Collet Tool Holder

ISO-KR Precision KR Collet Tool Holder

The ISO-KR page should focus on precision retention rather than general tool-holder coverage. Its KR collet system is designed around clamping stability, low deformation and wear resistance, making it suitable for repeated high-speed boring, milling and drilling work.

ISO-ER General-Purpose Collet Tool Holder

ISO-ER General-Purpose Collet Tool Holder

The ISO-ER is positioned as the versatile option within the ISO interface family. Its ER collet format supports a broad tool-diameter range and quick tool changes across drilling, reaming, tapping and milling, rather than prioritizing maximum torque or ultra-low collet deformation.

ISO-SK High-Torque Collet Tool Holder

ISO-SK High-Torque Collet Tool Holder

The ISO-SK is the torque-oriented member of the ISO group. Its 8-degree SK collet geometry increases holding strength for heavier milling and drilling, while the stated 1-25 mm h7 tool range gives the page a different selection purpose from ISO-ER and ISO-KR.

HSKA-SK High-Torque Tool Holder

HSKA-SK High-Torque Tool Holder

The HSKA-SK pairs the lightweight HSK-A interface with an SK collet chosen for torque transmission. Compared with other collet types in the catalog, the SK configuration provides 1.5-times higher clamping torque and accepts h7 tools from 1 to 25 mm.

HSKA-KR High-Precision KR Tool Holder

HSKA-KR High-Precision KR Tool Holder

The HSKA-KR is aimed at machining where long-term clamping stability matters more than the widest diameter range. The short HSK-A structure supports rapid tool change, while the KR system emphasizes low deformation, wear resistance and repeatable precision.

HSKA-ER High-Speed Collet Tool Holder

HSKA-ER High-Speed Collet Tool Holder

The HSKA-ER places a widely used ER collet system on a short, lightweight HSK-A interface. Its selection angle is versatility: one holder family can cover drilling, reaming, tapping and milling while retaining the axial and radial repeatability required at higher spindle speeds.

FEATURES

Fully centered design

The height of the center of mass and rotation coincides with the GO. 4 dynamic balance level, achieving extremely low vibration.

High efficiency

To achieve a matching speed of 90000rpm between ultra precision machining and high surface machining quality, achieving efficient machining.

APPLICATION

APPLICATION CASE

Discuss Your CNC Spindle or Motion Component Project

Share your machine type, machining process, performance targets or existing component specifications with Haozhi. Our technical team can support spindle selection, application matching, custom development and motion-component integration for new equipment and upgrade projects.

Mobile/Whatsapp

+86 186 6567 2648
Tel

+86 (20) 6225 7588 ext. 8558
Email

global@haozhihs.com
Address

No. 68 Hefeng Road, Huangpu District, Guangzhou, Guangdong Province, China, 511356