Introduction
Clevis pins, versatile and indispensable components in various industrial and engineering applications, play a crucial role in securing connections and ensuring structural integrity. Their unique design and adaptability make them an essential choice for professionals across diverse industries.
Definition: A clevis pin is a cylindrical fastener with a clevis (u-shaped) head at one end and a threaded end at the other. The clevis head provides ample space for the insertion of a cotter pin or a retaining clip, securing the pin in place.
Materials: Clevis pins are typically manufactured from steel, stainless steel, or alloy steel to ensure strength and durability. The material selection depends on the required load-bearing capacity, corrosion resistance, and environmental conditions.
Dimensions: Clevis pins are available in a wide range of diameters and lengths, allowing for precise selection based on the specific application. The diameter ranges from 3/16 inch to 2 inches, while the length varies from 1 inch to 12 inches.
Clevis pins cater to a vast array of applications in industries such as:
Advantages:
Regular Inspection: Clevis pins require regular inspection to ensure their integrity and prevent failures. Inspect for visible signs of wear, corrosion, or deformation.
Lubrication: Proper lubrication reduces friction and enhances the longevity of clevis pins. Apply a suitable lubricant to the threaded portion and the cotter pin holes.
Cotter Pin Maintenance: Ensure the cotter pin is securely installed and not damaged. Replace the cotter pin if it shows any signs of bending or wear.
Load Requirements: Consider the load-bearing requirements of the application and select a clevis pin with an appropriate diameter and material grade.
Length Selection: Choose a pin of sufficient length to extend through the connected components and provide adequate space for the cotter pin.
Thread Engagement: Ensure at least three full threads are engaged in the tapped hole for secure fastening.
Pros:
Cons:
Clevis pins are indispensable components in numerous industrial and engineering applications. Their versatility, load-bearing capacity, and ease of use make them an essential choice for secure connections. By following the principles outlined in this guide, professionals can select, install, and maintain clevis pins effectively, ensuring structural integrity and optimal performance in their projects.
Table 1: Clevis Pin Dimensions
Diameter (in.) | Length (in.) |
---|---|
3/16 | 1-1/2 |
1/4 | 2 |
5/16 | 2-1/2 |
3/8 | 3 |
7/16 | 3-1/2 |
Table 2: Clevis Pin Material Properties
Material | Tensile Strength (psi) |
---|---|
Steel | 58,000-120,000 |
Stainless Steel | 75,000-150,000 |
Alloy Steel | 100,000-250,000 |
Table 3: Clevis Pin Load Ratings (in lbs.)
Diameter (in.) | Tensile Load | Shear Load |
---|---|---|
3/16 | 3,000 | 1,800 |
1/4 | 4,500 | 2,700 |
5/16 | 6,000 | 3,600 |
3/8 | 7,500 | 4,500 |
7/16 | 9,000 | 5,400 |
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