Runner Lock Pins Tapered Shaft Standard Tip

In injection mold tooling, tapered-shaft runner lock pins are used to positively locate and stabilize runner systems during each opening and closing cycle. The tapered lead promotes smooth entry into the mating pocket, helping align the runner block components before the lock fully seats.

• Automotive connector and small-part runner systems: Use pins with the standard tip geometry to maintain repeatable runner alignment, reducing the risk of intermittent mislock in high-cycle production.
• Packaging and consumer-goods molds: The secure holding behavior supports consistent sprue/runner gating alignment, helping maintain part-to-part dimensional consistency at steady throughput.
• Multicavity hot runner or cold runner assemblies: Select head diameter options (Normal or Large) to match clearance constraints around the runner lock interface and keep engagement reliable across varying runner lock diameters.

Because this variant is built around a specified taper angle range (5–10°) and a standard tip profile, it is suited for molds that need stable alignment with predictable insertion force and locking repeatability.

The provided specifications describe the runner lock geometry (taper angle G: 5–10° and multiple pin/tip diameter options), but no steel grade or heat-treatment state is included in the input data. For this reason, material hardness (e.g., HRC), wear resistance, and toughness trade-offs cannot be stated for this SKU without the manufacturer’s material specification.

In general for runner lock pins, suppliers often use tool steels that can be heat treated for wear resistance at the tip while maintaining sufficient toughness to resist chipping under repeated seating cycles. Typical manufacturing involves machining the tapered shaft and tip, then finishing the contact surfaces for consistent engagement.

• When material grade is confirmed: engineers should verify expected hardness (HRC) and any secondary treatments (e.g., nitriding or quench & tempering) to match the runner system’s wear environment.
• If multiple materials exist: compare hardness vs. toughness to avoid tip wear or deformation that could affect lock stability.

Select the runner lock pin dimensions by matching both the functional tapered engagement and the mechanical clearance around the head. Start with the Runner Lock Diameter (3, 4, 5, 6, 8, or 10 mm) to ensure the pin fits the mating pocket bore for the runner lock interface.

• Taper and tip engagement: Use the specified taper angle G (5–10°) and the corresponding L (20–100 mm, 25–100 mm, or 25–150 mm) range so the pin reaches the intended seating depth during mold closure.
• Tip geometry matching: Choose B (0.8–3 mm up to 2–6 mm, and 2.5–7.5 mm) and tip diameters (P: 0.9–2.1 / 1.1–2.4 / 1.3–2.8 / 1.6–3.3 / 2.1–5.2 / 2.6–7 mm; V: 2.5–2.9 up to 8–9.9 mm; Y: 0.8–2 up to 2.5–6.9 mm) so the tapered lead and standard tip clear cavities and fully engage the pocket.
• Head clearance: select Normal or Large head diameter based on available space around the runner lock feature.

When integrating into the mold block, verify tolerance stack-up between pocket depth, engagement length, and head clearance to maintain stable locking without excessive insertion force.