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KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.
The BT40 ER32 Tool Holder is a high-precision bt40 holder designed for superior clamping accuracy and balance in modern CNC Machining centers. Engineered for professional milling, drilling, tapping, and engraving applications, this bt40 er32 collet chuck ensures consistent performance at both high speed and heavy cutting operations.
Manufactured to international standards, our BT40 Tool Holder features a precision-ground taper shank that guarantees excellent concentricity and rigidity, reducing vibration during machining. Whether you are operating in aerospace, mold manufacturing, or precision metalworking, the BT40 ER32 provides the accuracy and stability you need for optimal productivity.
| Feature | Description | Benefit |
|---|---|---|
| High Precision | Runout ≤ 0.003 mm | Ensures accurate cutting and perfect surface finish |
| Superior Clamping Force | ER32 collet design with strong tightening torque | Prevents tool slippage during high-speed machining |
| Premium Material | Made from high-grade alloy steel (20CrMnTi / SCM415) | Excellent hardness (HRC 58±2) and wear resistance |
| Dynamic Balance Grade | G2.5 / 25,000 rpm | Ideal for high-speed CNC machining centers |
| Heat Treatment & Grinding | Full surface hardening and precision grinding | Extended tool holder life and stability |
| Corrosion Protection | Nickel or black oxide coating | Long-term durability and rust resistance |
| Compatibility | Fits all ER32 collets | Versatile for different cutting tools and end mills |
Unlike a standard BT40 Hydraulic Tool Holder, the BT40 ER32 collet chuck provides a more economical and flexible clamping solution suitable for general and precision machining tasks.
The BT40 ER32 Tool Holder is widely used across industries that require precise and efficient machining performance:
CNC Milling Centers – For tool clamping in multi-axis machining centers.
Mold and Die Manufacturing – High accuracy for cavity finishing and contouring.
Aerospace Components – Reliable toolholding under extreme conditions.
Automotive Industry – Efficient for parts manufacturing and engine component milling.
Precision Metal Processing – Ideal for fine finishing and contour machining operations.
High-Speed Compatibility – Dynamically balanced to G2.5 at 25,000 rpm for smooth performance.
Precision Ground Taper – Guarantees tight fit on the spindle, reducing runout and vibration.
Strong Clamping System – ER32 collet ensures firm tool grip for accurate machining.
Durable and Anti-Rust – Surface treated with black oxide or nickel plating for corrosion resistance.
Universal Fit – Compatible with all CNC machines using holder BT40 interface standards.
Custom Options – OEM/ODM available for bt40 er32 tool holder dimensions, logo engraving, or special coatings.
| Specification | Description |
|---|---|
| Model | BT40 ER32 Collet Chuck |
| Type | BT40 Holder / Holder BT40 |
| Clamping Range | Ø2 mm – Ø20 mm |
| Runout Accuracy | ≤ 0.003 mm |
| Taper Standard | BT40 (MAS403 / JIS B6339) |
| Collet Type | ER32 |
| Material | Alloy Steel (20CrMnTi / SCM415) |
| Hardness | HRC 58 ± 2 |
| Surface Finish | Nickel plated / Black oxide |
| Dynamic Balance | G2.5 at 25,000 rpm |
| BT40 ER32 Tool Holder Dimensions | Lengths: 70 mm / 100 mm / 150 mm (custom available) |
| Cooling Option | Through-coolant (AD/B type) optional |
| Industry | Use Case |
|---|---|
| Aerospace | High-speed cutting and drilling with consistent accuracy |
| Automotive | Machining engine parts, transmission housings, and molds |
| Mold & Die Manufacturing | Precision finishing, contouring, and cavity shaping |
| Electronics & Precision Components | Fine machining for small parts and connectors |
| General CNC Machining | Versatile use across turning, milling, and engraving |
| Comparison Item | BT40 ER32 Collet Chuck | BT40 Hydraulic Tool Holder | Standard BT40 Holder |
|---|---|---|---|
| Clamping Flexibility | Supports multiple tool diameters via ER collets | Fixed diameter | Limited range |
| Cost-Effectiveness | Economical and easy to maintain | Higher cost | Standard |
| Runout Accuracy | ≤ 0.003 mm | ≤ 0.001 mm | ≤ 0.005 mm |
| Speed Capability | Up to 25,000 rpm | Up to 20,000 rpm | 10,000–15,000 rpm |
| Applications | General precision machining | Ultra-precision finishing | Basic machining |
| Maintenance | Easy and low-cost | Requires hydraulic oil maintenance | Simple |
The BT40 ER32 Tool Holder offers an ideal balance between accuracy, versatility, and affordability, making it the preferred choice for most CNC operations.
Direct Factory Manufacturing – Guaranteed consistency and quality control.
Strict Quality Inspection – Each tool holder tested for accuracy and dynamic balance.
Global Standards Compliance – ISO9001 certified, with RoHS-compliant materials.
Fast Delivery & OEM Support – Custom BT40 ER32 collet chucks available with short lead times.
Competitive Pricing – High-quality BT40 tool holders at factory-direct cost.
Q1: What is a BT40 ER32 Tool Holder used for?
A: It is used to securely hold cutting tools in CNC milling, drilling, and tapping machines, ensuring stability and precision during machining.
Q2: What is the difference between a BT40 ER32 and a BT40 Hydraulic Tool Holder?
A: The BT40 ER32 uses a mechanical collet system for clamping multiple tool sizes, while a BT40 hydraulic tool holder uses internal pressure for ultra-precision but higher cost.
Q3: What are the available BT40 ER32 Tool Holder dimensions?
A: Standard lengths include 70 mm, 100 mm, and 150 mm, with custom options available upon request.
Q4: Is the BT40 ER32 compatible with all CNC machines?
A: Yes, it fits all BT40 spindle systems following the MAS403 or JIS B6339 standards.
Q5: Can I get customized BT40 holders?
A: Absolutely. We support OEM/ODM customization including tool holder dimensions, coatings, and branding.
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KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.
E-mail:sales@kuratatools.com
