In fixture design and precision machining, the steel cone pin serves as a common locating component that plays a crucial role in ensuring accurate alignment, quick clamping, and high repeatability. Choosing the right steel cone pin not only improves fixture stability and durability, but also significantly enhances production efficiency and machining quality.

The greatest advantage of a steel cone locating pin lies in its conical self-centering design, making it ideal for applications such as automated assembly, CNC machining, and welding jigs. When selecting a cone pin, it is essential to first consider the taper angle and tolerance. A smaller taper offers higher positioning accuracy but requires more precise machining of the mating hole. A steeper taper angle, on the other hand, facilitates easier insertion and removal, which is suitable for fixtures with frequent part changes.

Taper Standards:

1:50 taper (GB117/GB118): Commonly used for self-centering applications.

Special tapers (e.g., 25°): Designed to compensate for casting hole deviations (used in floating cone pin systems).

Dimensions & Fit:

Diameter (d): Select based on workpiece hole size, typically φ2–φ50mm.

Length (l): Recommended embedded length ≥ 1.5× diameter.

Tolerance Fit:

For precision location: H7/g6 (clearance fit) or H7/n6 (transition fit)

For rough location: H8/h7

Material selection should be based on the operating environment. Common options include alloy steel, stainless steel, or hardened steel cone pins, which offer resistance to frequent use or moisture/corrosion. It's also important to consider how the pin is fixed—whether it's a press-fit cone pin, threaded base, or shouldered cone pin—as this affects maintenance and replacement.

As a professional supplier of precision fastening components, we provide a wide range of standard and custom steel cone pins with support for custom sizes, tolerance grades, and surface treatments to meet various fixture requirements.

If you are looking for a reliable steel cone pin manufacturer or need help with pin selection, feel free to contact us for technical advice and quotations.