LRSS Locating Rings Counterbore 4-Bolt Holes

This locating ring counterbore with 4-bolt holes is used during mold base assembly to lock the shoulder-type sprue system in a repeatable position. The low-profile height range (T = 10 to 45 mm) helps when the stack height is constrained by tie-rod clearances or top-plate thickness, while the counterbore geometry supports consistent seating on the mating shoulder.

• Automotive and industrial connector molds: Bolting the ring through the 4-bolt pattern improves alignment stability during frequent clamp cycles, helping maintain gate location and sprue bush-to-nozzle concentricity.
• General hot-runner / shoulder-type sprue tooling: The locating-ring shoulder compatibility reduces assembly variation, which is critical for minimizing mismatch between sprue components and downstream runner inserts.
• Space-limited mold bases: Choose the counterbore variant and appropriate D (60–150 mm) to keep locating hardware compact without sacrificing clamping rigidity.

Where positional repeatability and assembly repeatability are required, this variant’s 4-bolt clamping and counterbore seating are suited to maintain sprue alignment through repeated teardown/rebuild.

The provided specifications define dimensions and feature options (outer diameter, height, and dowel pin groove presence), but they do not state a specific steel grade or heat treatment condition. As a result, material properties such as HRC hardness, wear resistance targets, or whether the ring is quenched & tempered / nitrided cannot be confirmed from the input data.

When selecting material for LRSS-style locating rings in production tooling, engineers typically choose a structural mold steel with sufficient toughness for clamp loads and adequate wear resistance at the locating interface. The key trade-off is that higher hardness improves wear but can reduce toughness if not tempered appropriately.

• Confirm before procurement: Verify the steel grade and heat treatment state with the supplier for the exact part number 110200080160.
• Compare options (if offered): Hardened & tempered grades generally provide a balanced toughness-to-wear profile, while nitrided surface treatments improve scuff/wear resistance on the mating faces.

To select the correct LRSS locating ring counterbore, match its outer diameter (D) and height (T) to your mold base layout and the shoulder-type sprue interface.

• Outer diameter (D): Available values are 60, 100, 110, 120, and 150 mm. Choose the D that fits the locating counterbore envelope on the mold base, allowing proper clearance for clamp hardware and surrounding components.
• Height (T): Select from 10 to 45 mm to control stack-up and ensure the ring seats correctly against the mating shoulder without interfering with adjacent plates.

Next, decide on the dowel pin groove option: set it to Yes when you require enhanced positional repeatability during disassembly/reassembly; choose No if your alignment scheme relies only on the 4-bolt holes.

Tolerance/fit: Use the supplier’s drawing for the locating faces and mounting features. For locating rings, even small deviations can affect sprue concentricity, so confirm fit type (clearance vs. near-location) for the mating shoulder and fastener interface.