Sprue Bushings - Bolt Fixing, Flange Thickness 10 mm

This bolt-fixing sprue bushing with a 10 mm flange interface is used to lock the nozzle connection in injection mold tooling where assembly stability and repeatability matter. The flange distributes clamping load and helps maintain alignment during thermal cycling, reducing risk of leakage or mismatch at the sprue/nozzle interface.

• Automotive connector and terminal molds: Use the stable bolt-fixing layout for high-cycle production where consistent sprue quality and tight nozzle mating are required; select the straight or tapered tip match to correspond to the nozzle touch geometry.
• Industrial appliance housings: Choose the appropriate nozzle touch part specification (normal or string eliminator) to support desired flow behavior and reduce stringing near the gate.
• General sprue/nozzle hardware builds: Pick the steel grade and tip shape to match wear and assembly requirements while keeping the 10 mm flange thickness for straightforward installation on standard mold plates.

Available steels are selected to balance wear resistance, toughness, and service life in sprue/nozzle region exposure. SKD61 is commonly treated as an H13 equivalent, suitable for durable tooling under cyclic heating; it is typically quenched & tempered to achieve stable hardness for gate-area contact.

DC53 is a mold steel option aimed at improved wear resistance, often used where surface durability at the nozzle touch area is critical. HPM1 (equivalent) is offered as an alternative grade for tool steels in this family, depending on your expected thermal/mechanical loading and machining needs.

• Hardness & performance trade-off: Higher hardness generally improves wear resistance at the nozzle contact surfaces, while slightly lower toughness can increase chipping risk under misalignment.
• Selection guidance: If your process emphasizes abrasion and long runs, consider DC53; for broad cyclic performance, SKD61/HPM1 are typical choices.

To select the correct sprue bushing dimensions, start by matching the shaft diameter (D) to the nozzle opening/interface requirement: available D values are 8, 10, 12, 13, 16, 20 mm. Then choose the bearing bore length L from the available ranges (0–80, 0–120, 0–150, 0–200, or 0–100 mm) to fit your mold plate thickness and the required engagement depth with the nozzle.

• Taper engagement: Use the sprue taper angle A range of 0.5–3° or 0.5–4° based on your gate geometry, and keep the fixed taper angle G = 1–10° as specified for this part family.
• Sprue diameter (P): Select P = 2–3.5 mm, 2–8 mm, or 2.5–8 mm to align with the sprue diameter in the mold.
• Tip diameter (V): Confirm tip diameter V = 4 to 4.8 mm and choose nozzle touch specification (normal vs string eliminator) to match nozzle mating.

Tip matching shape (straight or tapered) is configurable, while the flange thickness is 10 mm, helping standardize installation on the mold plate.