Inch Pressed Fit Plain Guide Bushings (Bronze-Plated Copper Alloy)

In injection mold tooling, these inch pressed-fit plain guide bushings are used in leader/ejector guide systems where the press-fit pocket must deliver repeatable alignment over thousands of cycles. They are especially suited for die sets and forming tooling that rely on stable leader motion to prevent wear on cavities and tooling surfaces.

• Automotive connector and housing molds: Use in guide locations to support smooth parting line movement; the bronze-plated inner bearing surface helps reduce friction and wear during high-frequency cycling.
• Appliance and industrial component molds: Press-fit mounting stabilizes guide alignment under consistent load, improving motion stability for long production runs.
• Medical device housings (clean-room friendly tooling): Plain guidance supports uniform closure and ejection, helping minimize misalignment-related part defects.

This variant’s combination of pressed-fit installation and bronze-plated copper alloy bearing surface is chosen to maintain alignment reliability and protect critical guide interfaces in demanding production environments.

These plain guide bushings use a bronze-plated copper alloy bearing surface to improve sliding performance at the guide interface. Two construction types are available: hardened steel with bronze-plated I.D. for durability, or non-heat treated steel with bronze-plated I.D. and O.D. for broader surface protection while keeping cost and manufacturing flexibility in mind.

• Hardened steel + bronze-plated I.D.: Higher baseline hardness supports wear resistance where the inner diameter is the primary sliding surface.
• Non-heat treated steel + bronze-plated I.D. and O.D.: Bronze plating on both surfaces reduces galling risk and supports smooth engagement, with a trade-off versus fully hardened performance under severe wear.

Heat treatment differs by type: the hardened variant is heat-treated for increased strength, while the non-heat treated variant keeps the steel unquenched/untreated and relies on the plated surfaces for the primary tribological protection. For your application, select the hardened option for maximum wear life, or the non-heat treated double-plated option where surface coverage and compatibility with pressed-fit pockets are priorities.

Selection is driven by three inch dimensions: d (bushing inner diameter), D2 (outer diameter), and L (length). Start by matching d = 0.627 ~ 3.004 in to your leader or guide pin diameter to ensure correct running clearance and stable guidance.

• Match inner diameter (d): Choose the d value so the leader can slide without binding while maintaining alignment throughout mold cycling.
• Verify outer diameter (D2): Confirm D2 = 1.0014 ~ 3.752 in fits the pressed-fit pocket of the die set. The press-fit requirement means the bushing OD must be compatible with the machined guide bore for secure positioning.
• Set length (L): Use L = 0.75 ~ 6 in to cover the guide travel/support length needed for stable motion under load.

Because this is a pressed-fit design, dimensional compatibility between D2 and the mating bore is critical. If your mold uses controlled interference fits, select the nearest available OD and confirm fit based on your pocket tolerances; the provided dimensions are fixed within the stated ranges, while application clearance should be validated against the leader geometry.