Plain Leader Bushings
Standard cylindrical bushings in bronze alloy or hardened steel — the most economical option for general-purpose molds with regular lubrication.
Plain Leader Bushings (23 Products)
Short Shoulder Plain Guide Bushings
Short shoulder plain guide bushings engineered for compact mold plate installations with precision sliding fit.
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Inch Pressed Fit Plain Guide Bushings (Bronze-Plated Copper Alloy)
Inch pressed fit plain guide bushings in bronze-plated copper alloy for durable mold and die alignment.
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Plain Guide Bushings Pressed Fit Style Inch
Pressed fit style plain guide bushings in inch sizing for stamping die sets and mold tooling.
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Plain Guide Bushings Pressed Fit Style, Inch (Copper Alloy, Loctite Mounted)
Copper alloy plain guide bushings with pressed fit mounting and Loctite retention for inch tooling.
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Inch Wring Fit Plain Guide Bushings (Bronze-Plated Copper Alloy)
Inch wring fit plain guide bushings in bronze-plated copper alloy for smooth sliding and close tolerance guidance.
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Metric Plain Guide Bushings Wring Fit Style
Metric plain guide bushings with wring fit mounting for precision mold sets and stamping dies.
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Plain Guide Short Sleeves Press Fit Style Inch Bushing
Short sleeve press fit plain guide bushings in inch dimensions for compact die space applications.
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Inch Plain Guide Bushings (Bronze-Plated) Pressed Fit
Inch bronze-plated plain guide bushings designed for Loctite bonding and pressed fit installation.
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Bronze-Plated Plain Guide Bushings - Demountable Style
Bronze-plated demountable style plain guide bushings for easy replacement and low-wear operation.
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Bronze-Plated Short Shoulder Bushings - Demountable Style
Demountable short shoulder guide bushings with bronze plating for reduced friction and extended tool life.
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Plain Guide Steel Short Shoulder Bushings Press Fit Style (Inch)
Steel short shoulder plain guide bushings in inch press-fit style for heavy-duty die sets.
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Metric Short Shoulder Plain Bearing Bushings - Demountable
Metric short shoulder demountable plain bearing bushings for fast maintenance and dependable guidance.
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Metric Low Profile Plain Guide Bushings - Demountable Style
Low-profile metric demountable plain guide bushings for space-constrained mold bases.
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Long & Extra Long Shoulder Bushings - Wring Fit Style, Inch
Inch wring fit long and extra-long shoulder bushings for extended guide pin engagement.
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Metric Long & Extra Long Shoulder Bushings - Wring Fit Style
Metric wring fit long and extra-long shoulder bushings for deep-draw stamping and large molds.
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Bronze-Plated Steel Extra Long Shoulder Plain Guide Bushings - Demountable
Extra long shoulder plain guide bushings in demountable bronze-plated steel construction.
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Metric Long Shoulder Plain Bearing Bushings - Demountable Style
Metric long shoulder demountable plain bearing bushings for precision tooling alignment.
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Long Shoulder Plain Guide Bushings - Demountable Style, Metric
Metric long shoulder plain guide bushings in demountable style for reliable mold alignment.
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Demountable Style Bronze-Plated & Steel Oversize Shoulder Bushings (Inch)
Demountable bronze-plated and steel oversize shoulder bushings in inch dimensions for heavy tooling.
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Plain Guide Bushings (Demountable Style) Bronze-Plated Copper Alloy
Bronze-plated copper alloy plain guide bushings with demountable mounting for inch die sets.
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Inch Bronze-Plated Plain Guide Bushings - Demountable Style
Inch bronze-plated plain guide bushings with demountable clamp retention for quick changeover.
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Metric Wring Fit Style Shoulder Bushings
Metric shoulder guide bushings with wring fit mounting for high-precision die sets.
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Copper Alloy Wring Fit Plain Guide Bushings for Die Sets
Copper alloy plain guide bushings with wring fit tolerance for die sets and mold plates.
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Wring Fit Shoulder Bushings - Inch
Inch shoulder bushings with wring fit shank for rigid positioning and accurate alignment.
View DetailsBronze vs Steel Plain Bushings
| Property | CAC301 Bronze | S45C Steel (Carburized) |
|---|---|---|
| Hardness | HB 80-100 | HRC 45-50 (surface) |
| Friction vs SUJ2 Pin | Low (dissimilar metals) | Higher (steel-on-steel) |
| Wear Pattern | Bushing wears (softer) — protects pin | Both surfaces wear |
| Lubrication Need | Every 5K-10K cycles | Every 2K-5K cycles |
| Corrosion Resistance | Good (naturally resistant) | Poor (requires anti-rust treatment) |
| Cost | $$ | $ |
| Best For | Production molds, standard choice | Budget molds, low-cycle prototyping |
Deep dive: For a detailed comparison, read Bronze vs Steel Leader Bushings — Which Material Lasts Longer?.
About Plain Leader Bushings
Plain leader bushings are solid cylindrical bore components that receive leader pins for mold-half alignment. Bronze alloy (CAC301) is the industry standard, providing low friction against SUJ2 steel leader pins with predictable wear patterns — the softer bushing wears first, protecting the more expensive pin. Steel (S45C carburized) bushings offer lower upfront cost for prototype and low-cycle molds.
Application Scenarios
General-Purpose Injection Molds
Standard production molds need reliable, cost-effective alignment bushings that pair well with SUJ2 leader pins.
Why it fits: CAC301 bronze provides the ideal combination of low friction, predictable wear, and corrosion resistance for standard mold environments.
Prototype and Short-Run Molds
Prototype molds running < 50K cycles need functional alignment at minimum cost.
Why it fits: S45C steel bushings cost 40% less than bronze and provide adequate performance for short production runs.
Frequently Asked Questions
What is the difference between bronze and steel plain leader bushings?+
What press-fit tolerance do plain bushings require?+
How often should plain leader bushings be replaced?+
Engineering Resources
Need Custom Plain Leader Bushings?
Precision plain leader bushings manufactured to JIS and DIN standards. Custom dimensions available. MOQ 1 piece.