Ball Bearing Ball Guide Bushings (Metric) - Steel

These metric ball guide bushings are used inside clamp-mounted guide systems for large injection molding, die casting, and industrial die-set applications where repeatable alignment is critical. The ball-guide construction promotes smooth, stable motion between mating guide components, helping reduce stick-slip effects and preserving cycle-to-cycle positioning.

In automotive connector and housing molds, the guided alignment helps maintain uniform part geometry during opening/closing, especially when the mold experiences high clamping loads and frequent cycles. The steel construction provides the rigidity needed for long-running service.

For large die-casting tooling, the bushings support controlled motion at the guide interface, improving steadiness during ejection and reducing wear concentration at misaligned contact zones.

• Clamp-mounted assembly: enables straightforward installation into the guide layout.
• Multiple pin diameters and L lengths: lets engineers match the guide stack geometry for proper engagement.

The bushings are supplied in steel, selected to deliver high stiffness for guided clamp-mounted systems. Steel provides a good balance of wear resistance and toughness, helping the ball guide maintain dimensional stability under repeated load cycles.

• Hardness (HRC): not specified in the provided datasheet, so selection should be confirmed against the manufacturer’s material/heat-treatment certificate for the exact series.
• Wear vs. toughness trade-off: for ball-guide duty, higher surface hardness improves resistance to fretting and localized wear, while retained toughness helps prevent chipping or deformation under shock loading.

Heat treatment state (e.g., quenched & tempered, nitrided, or pre-hardened) is not explicitly listed in the provided data. When sourcing for high-wear die casting or high-cycle molding, request the heat-treatment condition and surface treatment details for reliable performance targeting.

Correct selection is driven by two series-specific variables: the nominal pin diameter and the L length. Choose the nominal pin diameter from 32, 40, 50, 63, or 80 mm to match the guide pin diameter used in your mold guide stack.

• Pin diameter match: select the bushing so its internal fit corresponds to the mating guide pin diameter to ensure controlled ball alignment without excessive clearance.
• Length L: select an L in the range 65 ~ 190 mm to achieve the required guide engagement length within the clamp-mounted housing.

Match the L length to the cavity/core guide design so the bushing supports the full stroke zone where alignment matters (opening/closing and ejection phases). If your design uses tightened fits, confirm the required clearance and tolerances with the guide pin specification; the provided dataset lists only the nominal diameter and L range, so tolerance values should be verified in the series drawing.

These dimensions are configurable within the stated diameter options and the L length range.