行业组件数据 · 2026

筒体

A precision cylindrical component in dispensing syringes that contains and guides fluid during controlled dispensing operations.

技术定义与适配语境
典型 筒体 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。

The barrel body is the primary structural component of a dispensing syringe, designed as a hollow cylinder with precise internal dimensions to house the plunger and contain the fluid. It provides the critical interface between the fluid reservoir and dispensing mechanism, ensuring accurate volume control, pressure management, and contamination prevention during pharmaceutical, chemical, or industrial fluid transfer applications.

组件规格

定义
The barrel body is the primary structural component of a dispensing syringe, designed as a hollow cylinder with precise internal dimensions to house the plunger and contain the fluid. It provides the critical interface between the fluid reservoir and dispensing mechanism, ensuring accurate volume control, pressure management, and contamination prevention during pharmaceutical, chemical, or industrial fluid transfer applications.
工作原理
The barrel body operates on the principle of positive displacement fluid dynamics. When the plunger moves within the barrel, it creates pressure differentials that force fluid through the nozzle. The barrel's precisely calibrated internal diameter and smooth surface finish ensure consistent fluid flow with minimal friction and accurate volumetric control.
材料
Medical-grade borosilicate glass (ISO 4802)polypropylene (PP)polycarbonate (PC)or cyclic olefin copolymer (COC) for pharmaceutical applicationsstainless steel 316L (ASTM A240) or PTFE-lined barrels for chemical resistancematerial selection based on chemical compatibilitysterilization requirementsand transparency needs.
Length
10-300 mm
Surface Finish
Ra ≤ 0.4 μm (glass), Ra ≤ 0.8 μm (plastic)
Pressure Rating
Up to 10 bar (standard)
Volume Capacity
0.1-500 mL
Internal Diameter
1-50 mm (standard range)
Temperature Range
-40°C to 200°C (material dependent)
Concentricity Tolerance
±0.02 mm
标准
ISO 7886-1ISO 11040-4DIN 13080ASTM E438

行业分类与别名

筒体 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 degradation from chemical exposure->Cracking or leakage compromising fluid containment->Implement material compatibility testing and use chemical-resistant coatings
Manufacturing defects in internal surface finish->Increased friction and inconsistent plunger movement->Apply statistical process control and 100% visual inspection
Thermal expansion mismatch in multi-material assemblies->Seal failure at barrel-plunger interface->Design with compatible thermal expansion coefficients and tolerance analysis

工业生态与工程逻辑

0
Material incompatibility with dispensed fluids
1
Internal surface defects causing fluid retention
2
Dimensional inaccuracies leading to volume errors
3
Stress cracking from repeated sterilization

合规与检测

tolerance
ISO 2768-mK for general dimensions, ±0.5% of nominal volume for critical applications
test method
ISO 7886-1 for sterility and leakage testing, ASTM D4169 for shipping validation, USP <788> for particulate matter

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

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 materials are suitable for chemical-resistant barrel bodies?

Stainless steel 316L, PTFE-lined barrels, or fluoropolymer materials provide excellent chemical resistance for aggressive solvents and acids.

How does barrel precision affect dispensing accuracy?

Internal diameter tolerances directly impact volumetric accuracy; tighter tolerances (±0.01 mm) enable precision to ±0.5% of target volume in pharmaceutical applications.

Can barrel bodies be customized for specific applications?

Yes, customization includes material selection, internal coatings, graduation markings, luer lock fittings, and specialized dimensions for automated dispensing systems.

我可以直接联系工厂吗?

CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Component Index · 机械和设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

请求制造能力信息: 筒体

说明目标数量、应用场景、交期和关键技术要求,用于准备 RFQ 或供应商评估。

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URN:CNFX:ME:UNIT:BARREL_BODY