行业组件数据 · 2026

润滑脂加注嘴

A grease fitting is a small mechanical component that provides a sealed connection point for injecting lubricating grease into machinery bearings and joints.

技术定义与适配语境
典型 润滑脂加注嘴 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 grease fitting, also known as a grease nipple or Zerk fitting, is a standardized fitting installed on lubrication points of machinery to allow periodic injection of lubricating grease under pressure. It consists of a threaded body with a ball check valve that opens when a grease gun nozzle is attached, creating a sealed pathway for grease delivery while preventing contamination and backflow.

组件规格

定义
A grease fitting, also known as a grease nipple or Zerk fitting, is a standardized fitting installed on lubrication points of machinery to allow periodic injection of lubricating grease under pressure. It consists of a threaded body with a ball check valve that opens when a grease gun nozzle is attached, creating a sealed pathway for grease delivery while preventing contamination and backflow.
工作原理
The grease fitting operates as a one-way valve system. When a grease gun nozzle is pressed onto the fitting, it depresses a spring-loaded ball or pin, opening a passage for pressurized grease to flow into the bearing or joint. When the grease gun is removed, the spring returns the ball/pin to its sealed position, preventing contaminants from entering and retaining lubricant within the component.
材料
Typically made from carbon steel (AISI 1010-1020)stainless steel (304/316)or brass. Hardened steel balls (AISI 52100) for check valves. Zinc plating or chrome plating for corrosion resistance.
Seal Type
Spring-loaded ball check valve
Thread Size
1/4-28 UNF, 1/8-27 NPT, M6x1, M8x1
Ball Diameter
4mm, 5mm, 6mm
Pressure Rating
Up to 10,000 psi (690 bar)
Temperature Range
-40°C to 150°C
标准
ISO 6149DIN 71412SAE J533

行业分类与别名

润滑脂加注嘴 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

Contaminant ingress through damaged seal->Bearing lubrication failure leading to premature wear->Regular inspection and replacement of damaged fittings, use of protective caps
Incorrect thread installation->Leakage and pressure loss during lubrication->Proper torque application during installation, use of thread sealant where appropriate
Incompatible grease types->Chemical breakdown leading to lubrication failure->Standardize grease specifications, clear labeling of lubrication points

工业生态与工程逻辑

0
Over-greasing causing seal damage
1
Contamination from dirty grease guns
2
Thread stripping during installation
3
Incompatible grease mixing causing chemical reactions

合规与检测

tolerance
±0.1mm on critical dimensions, thread class 6g/6H
test method
Pressure testing at 1.5x operating pressure, leak testing with helium mass spectrometry, material verification via spectroscopy

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 is the difference between metric and imperial grease fittings?

Metric fittings use millimeter thread measurements (e.g., M6x1) while imperial fittings use inch-based threads (e.g., 1/4-28 UNF). They are not interchangeable without adapters.

How often should grease fittings be serviced?

Service intervals depend on operating conditions, typically ranging from 50 to 500 hours of operation. Follow manufacturer recommendations based on load, speed, and environmental factors.

What causes grease fittings to fail?

Common failures include clogging from hardened grease, ball valve wear, thread damage during installation, and corrosion from environmental exposure.

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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。

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URN:CNFX:ME:UNIT:GREASE_FITTING