ISO 9448-4 Bronze Flanged Guide Bushings - One Side Flanged

Where it’s used: These ISO 9448-4 bronze flanged guide bushings fit into leader/ejector tooling to keep moving parts aligned during repetitive injection and press operations, especially when long stroke guidance is critical.

• Automotive connector and sensor housings: Use the one-side flanged profile to stabilize die-to-plate alignment and reduce guide shift over many cycles. The medium-height flange improves locating repeatability during bushing installation.
• Appliance and consumer device enclosures: In molds with frequent parting line opening and ejector travel, the bronze guide surface helps maintain smooth friction behavior and controlled wear in guide fit systems.
• General repetitive press forming inserts: The hardened bronze variants (61~63 HRC) are suited for longer life under dry sliding and alignment-critical motion.

Why this variant: Built to ISO 9448-4, the bushings support standardized interchangeability across compatible leader-bushing assemblies, helping engineers maintain consistent guide clearance and alignment performance.

Material system: The bushing body uses 1.7131 Bronze (also listed as a coated option). Bronze provides stable bearing behavior under sliding contact and is commonly selected for guide fit applications where friction and wear must be controlled.

• Hardened option: 61~63 HRC for higher wear resistance and longer guidance life in repetitive operation.
• Coated / lower hardness option: 52~54 HRC to balance toughness and reduce sensitivity to impact or installation variation, while the coating supports friction/wear management.

Hardness trade-off: The higher-hardness variant improves wear resistance, while the 52~54 HRC coated option can be preferred when toughness and resistance to localized loading are more critical.

Heat-treatment state: Available as hardened bronze at the specified HRC levels (and a coated option with the lower hardness range), enabling engineers to choose the right durability vs. robustness profile for their guide clearance strategy.

Step 1—Match the guide diameter (D): Select the bushing diameter from 19 ~ 63 mm so it matches the leader/guide fit design. Ensure the chosen diameter aligns with your intended clearance so the bushing can guide without binding.

Step 2—Match the working length (L): Choose L = 45, 55, 62, 67, or 89 mm based on the effective guidance length in your mold assembly (core/cavity alignment requirements plus overlap for stable centering).

Step 3—Use the flange for install location: Because this is a one-side flanged bushing, confirm the flange side placement corresponds to your die/plate locating surfaces. The flange helps repeat alignment during assembly, improving consistency across rebuilds.

• Tolerance/fit note: Use your standard mold guide-fit tolerance practice for bronze bushings; hardness changes (61~63 HRC vs. 52~54 HRC) can affect wear rate and running behavior, so validate clearances against your cycle conditions.
• Configurable dimensions: L and D are selectable within the listed ranges; M/material variant (bronze vs. coated) is a separate selection.