







Experience the unparalleled versatility of the cylindrical pin, a quintessential element in mechanical connections. Dive into our comprehensive exploration of this essential connector:
1, Basic Definition and Function
The cylindrical pin, a marvel of engineering, is an elongated pin crafted from metal or plastic. Its cylindrical form is meticulously designed for seamless insertion between two or more connecting components, achieving impeccable connection, precise positioning, and efficient power transmission. Leveraging a minimal interference fit, it secures itself within the hole, providing steadfast fixation for parts, transmitting power, or functioning as a precision positioning component.
2, Main types and characteristics
Discover the diverse array of cylindrical pins, each uniquely tailored to specific application scenarios and distinguished by its unique characteristics:
1. Ordinary cylindrical pin:
• Features: Boasting a simple yet robust structure, it offers exceptional neutrality and superior load-bearing capacity.
Application: Ideal for scenarios demanding high neutrality, such as in the precision environments of machine tools, automobiles, and power tools.
2. Internal thread cylindrical pin:
• Features: Equipped with an internal thread facilitating easy disassembly and assembly. While its positioning accuracy is relatively low, the convenience it offers in removal and installation is unmatched.
Application: Perfect for positions necessitating frequent disassembly and reassembly.
3. Elastic cylindrical pin:
• Features: With inherent elasticity, a hollow center, and slotted sides, it facilitates effortless assembly. Its design supports multiple disassemblies without compromising the integrity of the inner hole, making it ideal for challenging disassembly scenarios.
Application: Suited for environments requiring frequent disassembly and where precision positioning is secondary.
4. Perforated pins:
• Features: Featuring holes within the pin body, they can be securely locked using an open-mouth pin, ensuring ease of disassembly.
Application: A perfect fit for applications like hinges, where frequent disconnection and reconnection are essential.
3, Materials and Standards
Cylindrical pins can be crafted from a variety of materials, including stainless steel (such as SUS304, 316, etc.), carbon steel (such as C35, C45, etc.), and bearing steel (like Gcr15, etc.). Each material endows the pins with distinct mechanical and corrosion resistance properties, enabling selection tailored to specific environments and requirements.
Moreover, cylindrical pins adhere to both national and international standards, such as GB119 for ordinary pins and GB120 for internally threaded pins. These standards define the specifications for dimensions, tolerances, materials, and more, ensuring premium quality and seamless interchangeability.
4, Installation and usage precautions
1. Preparation before installation:
Meticulously hinge the pin hole to guarantee that its dimensions, shape, and surface roughness align with the stringent requirements of the cylindrical pin.
Apply a gentle coating of lubricating oil on the cylindrical pin to minimize friction and wear during the installation process.
2. Installation method:
Position a copper rod on the pin's end face and gently drive the cylindrical pin into the designated hole with precision.
Alternatively, employ a specialized tool, such as a C-clip, to efficiently press the cylindrical pin into place.
3. Precautions for use:
Given the high disassembly force of cylindrical pins, they may cause scratches on mating surfaces and are considered non-removable connections. For applications requiring frequent disassembly, opt for elastic cylindrical pins or other variants designed for repeated removals.