Gate Cut Springs Wire Flat

These gate cut springs are used in injection mold tooling where a runner stripper plate must open smoothly and return reliably after each cycle. Typical setups include runner stripper plate spring systems in multi-cavity molds, where vibration and shock can otherwise change spring force and affect part separation.

They are also common in thin-wall and precision automotive/consumer component molds that run high cadence. The spring wire flat gate-cut geometry helps maintain consistent force application, supporting stable stripper plate load and deflection across production.

For processes with elevated mold temperatures, choose the appropriate thermal rating (120°C or 200°C) to help keep spring behavior stable when the runner region experiences heat soak. That makes this variant suitable for long-run cycles and thermally demanding gating conditions.

• Runner stripper plates requiring stable spring force
• Cycle-intensive production where shock/vibration are present
• Runner zones operating at 120°C or 200°C

The provided datasheet specifies performance ratings (load, deflection, spring constant, and heat resistance to 120°C or 200°C) but does not list a steel grade, case depth, or a specific heat-treatment condition (e.g., quench & temper, nitriding). Therefore, material-selection details such as exact hardness (HRC) and wear/toughness trade-offs cannot be stated from the supplied information.

From an engineering standpoint, the key differentiators for this part are its spring constant (21.8 ~ 61.3 N/mm) and allowable deflection (5 ~ 22 mm), which govern how the spring stores and releases energy under load. When selecting among sizes, match stiffness and deflection capability first to avoid overstressing or under-loading the stripper plate.

• Heat resistance: choose 120°C or 200°C variant per thermal environment
• Force/deflection matching: key to maintaining stable stripper plate behavior

Selection is primarily driven by the required stripper plate spring behavior: spring constant, allowable deflection, and the resulting load. Use the target working deflection for your stripper plate stroke and choose a spring with an allowable deflection within 5 ~ 22 mm to prevent loss of performance from excessive travel.

Then ensure the required opening/return force is within the available range of load 163.4 ~ 784.5 N. If you have a desired stiffness, select the corresponding spring constant 21.8 ~ 61.3 N/mm so deflection produces the correct load for the runner stripping function.

• Diameter D (mm): 16, 18, 20, 22, 25, 30
• Length L (mm): 20 ~ 55
• Inner diameter d (flat type only): 9, 11, 11.5, 12.7, 15, 17

Finally, verify fit in your stripper plate/locating features by matching D and, for flat-type configurations, d. Tolerance values are not provided in the input data, so confirm clearances against your own mold tolerance and assembly requirements.