ABPXE Type O1 Tool Steel Positioning Locking Blocks with Angular Pin Hole

These ABPXE positioning locking blocks with an angular pin hole are used in injection mold and die assemblies where repeatable part location is critical, especially during plate separation and reassembly. The angular pin hole variant helps alignment by engaging with mating pins at a controlled angle, reducing the risk of rotational misregistration.

• Automotive and appliance connector molds: Use the locking block on undercut plate systems to stabilize core/cavity plate alignment through high-cycle spotting and teardown cycles. O1 tool steel durability supports wear over repeated positioning.
• Electronics enclosure tooling: Install on steel support plates with PL bolt fixing to hold reference geometry firmly, improving consistency for thin-wall or tolerance-sensitive features.
• General undercuts-plates applications: Select the fixed ABPXE type configuration for standard locking layouts where the angular engagement helps maintain repeatability between maintenance intervals.

With available block widths (15, 20, 25 mm) and a fixed angle range of 15–20°, this variant is suited to precise locating without requiring custom geometry.

This product is made from O1 tool steel. O1 is an oil-hardening tool steel known for good toughness and wear resistance in tooling applications where dimensional stability and reliable locating surfaces matter.

• Heat treatment (typical for O1): Quenched and tempered after machining to achieve a balance of hardness and toughness for long service life.
• Hardness & wear vs. toughness trade-off: Higher tempering targets improved toughness but can reduce wear resistance; lower tempering increases hardness and abrasion resistance but may reduce impact toughness. The final hardness is normally selected based on cycle rate and contact stress.
• Manufacturing process: Machined block geometry with the angular pin hole for precise engagement, followed by heat treatment to lock in wear performance on the locating interfaces.

If your process involves extremely abrasive conditions, alternative wear-focused tool steels may offer improved resistance, but O1’s balance is often well-suited for repeatable positioning components like this locking block.

To select the correct locking block, match the block width A/W and the angle A to your mating reference design. This series provides A/W = 15, 20, or 25 mm, and the fixed angle A = 15–20°.

• Choose A/W (block width): Select 15 mm for compact plate layouts, 20 mm for common undercuts-plate spacing, and 25 mm when more material width is needed for clamp/bolt spacing and positional rigidity.
• Verify angle compatibility: Ensure the mating pin’s alignment geometry corresponds to the fixed angular configuration (15–20°) so the angular hole seats correctly.
• Tolerance/fit considerations: Positioning features typically require consistent hole-to-pin fit to avoid repeatability loss. Confirm your pin diameter tolerance and surface finish are compatible with the angular hole for stable seating.
• Fixed vs configurable: The configuration is fixed ABPXE type; the selection is limited to the available A/W sizes and the specified angular range.

Once A/W and angle are matched, confirm the PL bolt fixing pattern in your plate stack-up to maintain proper clamping without inducing side load on the locating surfaces.