ISO 9448-3 1.1730 Steel Guide Bushings for Ball Cages

Guide bushing elements like these are used in injection and die-casting mold tooling where a ball cage must be precisely guided during die set motion.

• For precision die sets, they support ball cages that slide within the guide path, helping maintain alignment under repeated opening/closing.
• In large mold mechanisms (e.g., die-casting accessory assemblies), the stable 61–63 HRC heat treatment supports wear-resistant guidance even with frequent contact between cage and guide surfaces.
• When assembly repeatability is critical, the anaerobic adhesive type is suited to secure positioning during die assembly, reducing micro-shifts that can degrade cage alignment over time.

The ISO 9448-3 conformance and hardened 1.1730 steel variant are particularly suitable when engineers need consistent fit with standardized guide assemblies and predictable wear performance for long-cycle mold operation.

This guide bushing is made from 1.1730 steel and manufactured to ISO 9448-3. The part is heat-treated to 61–63 HRC, providing a balance of wear resistance and toughness for sliding contact with ball cage components.

• Hardness (61–63 HRC): improves abrasion and surface durability in guide applications.
• Wear vs. toughness trade-off: higher hardness increases resistance to scuffing but requires sound mounting practices to avoid stress concentrations.
• Adhesive compatibility: the specified anaerobic adhesive type supports stable assembly bonding to maintain guidance geometry.

If alternative steels are considered for other duty cycles, hardness targets should remain comparable; lower hardness generally reduces wear life, while significantly higher hardness can increase sensitivity to impact or misalignment.

Select the guide bushing to match your mold’s ball-cage guidance geometry and the required insertion footprint.

• Choose the pillar outer diameter D within 15–80 mm to fit the guide bore or corresponding seat in the die set.
• Select length L from 23–120 mm based on how much axial support your ball cage needs for stable alignment across the stroke.
• Confirm the preferred ball cage length l matches the application within 45–140 mm, so the bushing provides full guidance coverage where the cage travels.

Because the bushing is produced to ISO 9448-3, use the standard to ensure compatibility with your guide assembly stack-up. Verify fit at assembly interfaces (bushing seat and cage mating surfaces) and maintain proper installation alignment to preserve performance at 61–63 HRC.