







E-type Positioning Pin Overview
The E-type positioning pin is an ingenious mechanical fastener, specially engineered with an 'E'-shaped cross-section. It is predominantly employed to ensure quick and secure positioning, robust connections, and effective anti-loosening of equipment components. This versatile pin excels in environments prone to frequent vibrations or where repeated disassembly and assembly are required. Delve into its comprehensive details below:
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1. Fundamental Definition
Named for its distinct 'E' cross-sectional profile, the E-shaped positioning pin comprises a resilient pin body and an elastic opening. Its unique design allows it to be inserted into holes with elastic deformation, applying tension for rock-solid fixation while serving both positioning and anti-loosening roles. This innovation frequently replaces conventional bolts in sectors such as mining machinery and conveyor systems, effectively addressing challenges with corrosion and disassembly.
Structural Highlights
1. Elastic Opening Innovation:
Engineered with elastic grooves on one or both sides, these grooves undergo deformation and generate gripping tension once inserted, ensuring a snug fit against the hole wall to avert loosening.
Certain models feature a tail that can be bent to create a mechanical lock, amplifying their resistance to vibrations.
2. Durable Material Composition:
Carbon Steel (such as 45# steel): Post-quenching, these attain a hardness range of HRC36-48, making them apt for general industrial use.
Alloy Steel: After undergoing heat treatment, these boast a hardness of HRC45-55, enabling them to withstand substantial loads and wear.
• Tool Steel: With a superior hardness of HRC60-63, these are ideal for precision machinery and mold manufacturing. 1. Stainless Steel: Known for exceptional corrosion resistance, making them well-suited to corrosive environments.
3. Versatile Specifications:
Nominal diameters span M16-M20 (illustrative models include 16163, 16200), with customizable lengths available.
Surface treatments such as galvanizing and phosphating enhance both corrosion resistance and longevity.
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3. Pivotal Advantages
Swift Installation: Achieve fixation effortlessly by simply hammering or pressing in, eliminating the need for traditional bolts or nuts, thereby significantly boosting assembly efficiency.
Anti-Vibration Excellence: The elastic framework effectively absorbs vibrational energy, mitigating the loosening issues prevalent with traditional bolts under prolonged vibrations.
• Reusability Champion: Post-disassembly, the pin's elasticity is well-preserved, supporting multiple installations without wear and tear.
4. Applicable Scenarios
1. Mining & Conveying Equipment:
Perfect for replacing support legs, intermediate frames, and other traditional bolted components in belt conveyors, effectively resolving issues of corrosion and disassembly.
2. Mechanical Manufacturing:
Ensures high-precision positioning in molds and precision machinery. The tool steel pin body withstands significant loads with ease.
3. Rail Transit & Automotive:
Optimal for connecting components like chassis and wheels, which require frequent maintenance, balancing ease of access with reliability.
5. Installation Best Practices
Hole Compatibility: The pin body diameter must align precisely with the pin hole. A tight fit may cause deformation, while a loose fit can undermine fixation.
Installation Technique: Light tapping with a rubber hammer is advised to prevent direct damage to the elastic grooves, avoiding the use of metal tools.
Routine Inspection: In high-vibration environments, routinely check for pin body deformation or wear and promptly replace as necessary.