行业组件数据 · 2026

拉钉/保持旋钮

A precision fastener that securely retains tool holders in CNC machine spindles through mechanical clamping force.

技术定义与适配语境
典型 拉钉/保持旋钮 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

A critical retention component in machining centers that provides the mechanical interface between the tool holder and machine spindle. It consists of a threaded stud with a precisely machined retention groove that engages with the spindle's drawbar mechanism, creating the clamping force necessary to hold the tool holder securely during high-speed machining operations.

组件规格

定义
A critical retention component in machining centers that provides the mechanical interface between the tool holder and machine spindle. It consists of a threaded stud with a precisely machined retention groove that engages with the spindle's drawbar mechanism, creating the clamping force necessary to hold the tool holder securely during high-speed machining operations.
工作原理
The pull-stud works through a mechanical clamping system where the machine's drawbar mechanism pulls the retention knob upward, causing the spindle's collet or retention fingers to engage with the groove on the stud. This creates a wedging action that generates substantial axial force, typically ranging from 5,000 to 20,000 N, securing the tool holder against the spindle taper with precise repeatability.
材料
High-strength alloy steel (typically AISI 41404340or equivalent)heat-treated to HRC 40-50 for optimal strength and fatigue resistance. Premium versions may use tool steels or specialized alloys with surface treatments like nitriding or titanium nitride coating.
Weight
50-200 g
Hardness
HRC 40-50
Thread Type
Metric (M16, M20, M24) or Inch (5/8-11, 3/4-10)
Clamping Force
5,000-20,000 N
Overall Length
40-80 mm depending on spindle type
Surface Finish
Ra 0.8 μm or better
Retention Groove Diameter
Standardized per machine manufacturer specifications
标准
ISO 7388DIN 69872ANSI/ASME B5.50JIS B 6339

行业分类与别名

拉钉/保持旋钮 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Material fatigue from cyclic loading->Fracture at retention groove or thread root->Regular replacement schedules, proper torque application during installation, use of certified materials
Improper installation torque->Thread stripping or insufficient clamping force->Use calibrated torque wrenches, follow manufacturer specifications, implement installation training
Contamination in spindle interface->Incomplete seating and reduced clamping force->Regular spindle cleaning, proper storage procedures, inspection before installation

工业生态与工程逻辑

0
Tool ejection during high-speed operation
1
Spindle damage from improper installation
2
Fatigue failure from cyclic loading
3
Incompatibility with machine specifications

合规与检测

tolerance
±0.01 mm for critical dimensions, thread accuracy to 6g/6H standards
test method
Dimensional verification with CMM, hardness testing (Rockwell C), tensile testing for material certification, fatigue testing per ISO 12106

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What happens if a pull-stud fails during machining?

Pull-stud failure can cause catastrophic tool ejection from the spindle, resulting in machine damage, workpiece destruction, and serious safety hazards. Regular inspection and replacement according to manufacturer guidelines is critical.

Are pull-studs interchangeable between different machine brands?

No, pull-studs are machine-specific and must match the spindle manufacturer's specifications exactly. Using incorrect pull-studs can lead to improper clamping, reduced tool life, and safety risks.

How often should pull-studs be replaced?

Replacement intervals vary based on usage, but typically range from 6-24 months in continuous production environments. Regular inspection for wear, cracks, or deformation is essential for preventive maintenance.

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初步技术归类
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URN:CNFX:ME:UNIT:PULL_STUD_RETENTION_KNOB