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  • CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders
  • CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders
  • CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders
  • CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders
  • CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders
  • CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders
CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders

CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders

  • 10 - 499 Pieces
    $13.57
  • 500 - 999 Pieces
    $12.89
  • 1000 - 1999 Pieces
    $12.21
  • >= 2000 Pieces
    $11.53

Customization:

Customized logo（Min.Order: 5000 pieces）
Customized packaging（Min.Order: 5000 pieces）
Graphic customization（Min.Order: 5000 pieces）
View product details

CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Precision Boring & Threading: Designed for high-precision internal threading and boring operations in CNC lathes, enabling the creation of trapezoidal threads and smooth bores in steel components.
  • CNC Compatibility: Equipped with automatic control features for seamless integration into CNC machining processes, ensuring consistent accuracy and efficiency.

Key features

  • 1. Advanced Material Technology

    • With high-speed steel (HSS) and PVD coating, you can achieve exceptional durability and wear resistance, outperforming uncoated tools in prolonged machining operations*

  • 2. CNC-Compatible Interactive Design

    • With a CNC-optimized design and automatic control integration, you can streamline threading processes for precise, repeatable results, reducing manual adjustments compared to traditional boring bars*

  • 3. Precision Performance Parameters

    • With a minimum machining diameter (φDmin) as low as [specific value]* and tight tolerance capabilities, you can produce intricate parts with accuracy, surpassing general-purpose tools in precision applications*

  • 4. Commercial-Grade Scenario Solutions

    • Designed for industrial CNC environments, you can ensure uninterrupted operation during high-volume production, ideal for continuous commercial manufacturing demands*

  • 5. Eco-Friendly Coating Certification

    • With PVD coating technology, you can reduce environmental impact while maintaining performance, aligning with eco-conscious manufacturing standards*

Product details

CNC Automatic Lathe U Style Trapezoidal Thread Boring Bar HSS Internal Threading Toolholders

The HUNR series CNC Automatic Lathe U Style Trapezoidal Thread Boring Bars are precision-engineered tool holders designed for internal threading and boring operations in steel workpieces. Featuring high-speed steel (HSS) construction with PVD coating, these tools deliver exceptional durability and heat resistance. Compatible with automatic and CNC control systems, they ensure consistent performance in high-volume machining environments.

Technical specifications

FeatureSpecificationBenefit
MaterialHigh-speed steel (HSS)Enhanced wear resistance and heat tolerance
CoatingPVD (Physical Vapor Deposition)Extended tool life in high-temperature use
Control ModeAutomatic, CNCPrecision repeatability and error reduction
Tool TypeThreading tool & Boring barDual functionality for internal threading
Workpiece CompatibilitySteel (all grades)Versatile for heavy-duty machining tasks
Minimum Machining Diameter (φDmin)8mm (Base), 10mm (Advanced), 12mm (Pro)Customizable precision for varying hole sizes

Customization guide

Adjustable parameters include diameter (φd), length (L), and screw type to meet specific machining requirements. For example:

  • Flank Length (f) can be modified for deeper hole boring.
  • Shank Length (L1) can be tailored to optimize tool stability in long-reach applications.

Get inspired

With the HUNR series, manufacturers can achieve precise internal threading and boring in steel components, ensuring tight tolerances even in high-production environments. The U-style design and PVD coating combine to reduce downtime and improve surface finish quality.

Choose your model

ParameterBase Model (HUNR0008T-11U)Advanced Model (HUNR0010K-11U)Pro Model (HUNR0012L-11U)
Minimum Machining Diameterφ8mm+25% (φ10mm)+50% (φ12mm)
Overall Length (L)110mm120mm (+9%)130mm (+18%)
Material Hardness (HRc)6264 (+3%)66 (+6.5%)
Flank Length (f)15mm18mm (+20%)22mm (+47%)

Supplier's note

  1. Three Technical Breakthroughs:

    • PVD Coating: Reduces friction by 30% compared to uncoated tools, extending tool life in high-temperature applications.
    • U-Style Design: Ensures 15% better chip evacuation than conventional styles, preventing jamming in deep-boring operations.
    • Modular Shank System: Adjustable shank lengths allow customization for overhang requirements, improving stability in long-reach setups.

  2. Optimal Version Selection:

    • Base Model: Ideal for small-batch production or prototyping where φ8mm holes are standard.
    • Advanced Model: Recommended for medium-volume machining of φ10mm holes, balancing cost and performance.
    • Pro Model: Best suited for heavy-duty industrial applications requiring φ12mm+ precision and extended tool life. The Pro’s 66 HRc hardness ensures reliability in hardened steel machining.

With the Pro version’s 66 HRc hardness, you can machine hardened steel grades (e.g., 42CrMo) without frequent tool replacements. Pair its 22mm flank length with CNC automation to achieve 99.9% dimensional accuracy in deep-bore applications.

Frequently asked questions

  • Which HUNR boring bar model is best for small diameter machining in CNC automatic lathes?

  • How do I maintain and clean a HUNR trapezoidal thread boring bar with PVD coating?

  • Why choose high-speed steel (HSS) for HUNR boring bars over other materials?

  • Can HUNR boring bars be customized for non-standard thread diameters?

  • Is the HUNR boring bar compliant with ISO standards for CNC threading tools?

  • What makes HUNR boring bars suitable for automatic CNC lathes?

  • How does the HUNR design ensure accurate internal threading in steel workpieces?

  • What advantages does the PVD coating offer for HUNR boring bars compared to traditional coatings?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionHigh-precision machining of hardened steel- Industry Standard: Tungsten carbide (ISO 5500)
- Our Base: M2 HSS (ASTM A681)
- Our Advanced: M42 HSS + 10% Co (ASTM A681-19)▲		Base: Cost-effective for moderate loads; Advanced: 40% higher heat resistance▲▲Base: Limited to softer materials; Advanced: 30% higher cost▲▲
Coating TechnologyExtended tool life in abrasive environments- Industry Standard: TiN (3–5μm)
- Our Base: PVD AlTiN (5μm)▲
- Our Advanced: PVD TiAlN + DLC (7μm)▲▲		Base: 40% longer life vs TiN; Advanced: 60% wear resistance▲▲ (reduces friction by 30%)Advanced: More fragile during handling▲▲
Machining PrecisionPrecision boring in aerospace components- Industry Standard: ±0.02mm (ISO 2768)
- Our Base: ±0.015mm (ISO 10360)▲
- Our Advanced: ±0.008mm (ISO 10360-2)▲▲		Advanced: Meets aerospace tolerances▲▲; Base: Sufficient for general machiningAdvanced: Requires CNC control▲▲
Tool RigidityDeep bore operations in thick steel plates- Industry Standard: Shank length 150mm (ISO 230-2)
- Our Base: 180mm▲
- Our Advanced: 220mm reinforced shank▲▲		Advanced: 25% less deflection▲▲; Base: Better balance of rigidity/costAdvanced: 20% heavier, harder to maneuver▲▲
Control System CompatibilityAutomated production lines- Industry Standard: Manual adjustment
- Our Base: Semi-automatic CNC▲
- Our Advanced: Fully programmable CNC▲▲		Advanced: 30% faster setup▲▲; Base: Easier for small batchesAdvanced: Requires skilled operators▲▲
Workpiece CompatibilityMulti-material manufacturing- Industry Standard: Steel, aluminum, brass
- Our Base: Steel, stainless steel▲
- Our Advanced: Steel, titanium, Inconel▲▲		Advanced: Versatile for exotic alloys▲▲; Base: Cost-effective for common metalsBase: Limited to less abrasive materials▲▲

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