Parallel pin ISO 2338 - DIN 7

What is a dowel pin?

‍

Dowel pins are cylindrical fasteners that look like a smooth rod, with no grooves or threads. Their design allows them to be machined with chamfered or domed ends, depending on your specific needs and application.

The choice of material, tolerance and dimensions is made with the customer during the co-design phase, so that the pin fully meets their requirements.

Dowel pins are particularly valued for their ability to hold mechanical parts together quickly and reliably. They are often used in applications that require regular assembly and disassembly, such as industrial machinery, laboratory equipment or automotive systems.

‍

As the name suggests, a dowel pin has no slots, grooves or threads on its surface. Dowel pins are made of steel, raw steel, stainless steel, brass or aluminium.

A dowel pin can be made in different shapes:

‍

• Tapered dowel pin: its point makes insertion into your assembly easier.

• Truncated-cone dowel pin: the tip of this shape allows easy insertion while minimising the risk of slipping.
  • These types of dowel pins have one drawback: they can cause the part to work loose.

• Plain dowel pin ISO 2338 - DIN 7: the plain dowel pin is the most common shape and is found in many applications, combining simplicity and effectiveness.
  • It is a dowel pin without slot or chamfer, with dimensional tolerances specified by DIN 7 or ISO 2338.

• Ground dowel pin ISO 8734 - DIN 6325 : this dowel pin has a tighter tolerance and is used in applications that require precise alignment of the assembled parts, in accordance with DIN 6325 or ISO 8734.

‍

In which industries are dowel pins used?

‍

The dowel pin is an essential assembly component across many fields of engineering and industry. Its design and versatility make it indispensable in many applications:

‍

• Automotive industry: dowel pins are used to secure drive shafts and camshafts.
• Electrical industry: dowel pins are used to fix electrical components in housings (small diameters).
• Aerospace industry: dowel pins are used to fix various blades.

‍

How are your custom ISO 2338 - DIN 7 dowel pins designed?

‍

The project steps are the same whatever the product. Let's take the example of a dowel pin to ISO 2338 - DIN 7:

‍

• Understanding the customer's needs: this is the first crucial step towards successful high-volume production of quality dowel pins.

• Prototyping: LGC offers to produce prototypes to evaluate different solutions designed by our engineering office, or to test a dowel pin against the customer's requirements.

• Industrialisation: our process engineering team selects the right cutting tools for your dowel pin's specifications. Initial samples are produced and undergo strict quality checks to ensure compliance with geometric and mechanical standards.

• Series production: dowel pin production is launched according to the customer's orders, with continuous quality control to detect any defect quickly and take corrective action if needed.

• Final inspection: before shipment, our dowel pins undergo a final series of conformity checks carried out by LGC's staff and high-tech inspection equipment, to guarantee optimal quality, with a 0 PPM target for the most demanding industries.

‍

For a dowel pin, it is the bar turning and finishing operations that set it apart from other product ranges, by defining the shape of the part.

Manufacturing a dowel pin relies on precision machining techniques, such as mechanical bar turning or micro-machining, carried out on CNC lathes or cam-driven lathes.

Suitable heat treatments and surface finishes are also applied to ensure the quality and durability of each dowel pin.

‍

What are the advantages of dowel pins?

‍

The dowel pin is a preferred choice in many industrial and engineering contexts, thanks to its distinctive properties and many advantages.

Here is a detailed look at the main benefits of using dowel pins:

‍

• Ease of use: fitting a dowel pin is extremely simple, which streamlines the assembly of components and saves significant time when assembling your parts.

• Reliable assembly: the dowel pin provides a solid connection between parts, ensuring the stability and durability of the assembled structures or mechanisms. This robust connection helps prevent any unwanted movement between the assembled components.

• High mechanical strength: designed to withstand heavy loads, the dowel pin excels in applications requiring high mechanical strength. Its ability to handle high stresses makes it an essential component in many demanding industrial environments.

• Versatility: dowel pins are suitable for a wide range of applications, from mechanical assembly in manufacturing to sectors as varied as automotive and aerospace. Their adaptability to different environments and needs makes them a versatile and widely used choice in modern industry.

‍

In short, the dowel pin stands out for its ease of use, reliable assembly, high mechanical strength and versatility, making it an essential component in many industrial and engineering applications.

With suitable heat treatments and surface finishes, dowel pins can offer increased wear resistance and better retention in assemblies.