High-Precision BT40 ER Collet Chuck Tool Holder (0.005mm Runout, 42CrMo) – OEM
Premium 42CrMo BT40-ER20 Tool Holder with 7/24 Taper Standard – Customizable
Quick Specifications
| Product Name | OEM BT40 ER Collet Chuck Tool Holder (42CrMo, 0.005mm TIR, 7/24 Taper) |
|---|---|
| Tool Holder Standard | MAS 403 BT40 (7/24 Taper Angle) |
| Collet Interface | ER Series (e.g., ER16, ER20, ER32) |
| Material | Premium 42CrMo Alloy Steel (Deep Cryogenic Treatment) |
| Hardness | HRC 48-52 (High surface hardness with tough core) |
| Runout / TIR Precision | High Precision ≤ 0.005mm |
| Gauge Lengths (L) | Standard 70mm, 100mm, 150mm (Custom lengths available) |
| Application | High-Precision CNC Milling, Drilling, and Tapping |
| Brand Name | Xiaoman Tools |
| Manufacturer | Shanghai Daoge Xiaoman Tools Co., Ltd. |
| Customized Support | 100% OEM/ODM (Dynamic Balancing G2.5, Laser Etching, Custom Boxes) |
- Factory Direct Pricing
- Strict Standard QC
- Support OEM / Custom Packaging
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Product Details
High-Precision BT40 ER Collet Chuck Tool Holder (0.005mm Runout)
The Ultimate Rigid Connection Between Your CNC Spindle and Cutting Tools
Maximize the performance and lifespan of your expensive carbide end mills with the ultra-precise BT40 ER Tool Holders from Shanghai Daoge Xiaoman Tools Co., Ltd. Engineered to the strict MAS 403 standard with a flawless 7/24 taper angle, these holders guarantee maximum spindle contact and vibration dampening. Forged from premium 42CrMo alloy steel and subjected to deep cryogenic treatment, they offer a tough core to absorb shock and a hardened surface (HRC 48-52) to resist wear. Featuring an exceptional Total Indicator Reading (TIR) of ≤ 0.005mm, our ER collet chucks eliminate tool wobble. As your direct OEM factory, we supply all standard gauge lengths (e.g., 70mm, 100mm) and offer extensive customization for the Indian and Vietnamese high-volume manufacturing sectors.
Key Technical Advantages
- 0.005mm High-Precision Runout: Ground to extreme tolerances, ensuring the cutting tool spins perfectly true. This drastically improves surface finishes on milled parts and prevents premature edge chipping on solid carbide tools.
- Premium 42CrMo Construction: Far superior to standard carbon steels, 42CrMo alloy steel provides incredible tensile strength and fatigue resistance, essential for heavy-duty CNC milling and high-speed machining.
- Perfect 7/24 Taper Contact: The spindle taper is precision-ground to achieve over 85% contact area with the machine spindle, ensuring rigid power transmission and protecting the machine's bearings.
- Versatile ER Collet Interface: The universally accepted ER clamping system (ER16, ER20, etc.) allows you to securely grip a massive range of tool diameters using a single holder.
- Wholesale OEM Capabilities: We bypass middleman markups. Partner with us for custom dynamic balancing (e.g., G2.5 @ 25,000 RPM), personalized laser branding on the flange, and rugged B2B packaging solutions.
Technical Specifications
| Manufacturer: | Shanghai Daoge Xiaoman Tools Co., Ltd. |
| Spindle Interface: | MAS 403 BT40 (7/24 Taper Angle) |
| Tool Interface: | ER Collet System (ER16, ER20, ER32) |
| Material & Hardness: | 42CrMo Alloy Steel / HRC 48-52 |
| Runout Accuracy (TIR): | ≤ 0.005mm (Ultra-High Precision) |
| Gauge Lengths: | 70mm, 100mm, etc. (Customizable) |
| OEM Service: | Active (Dynamic Balancing, Custom Etching) |
