Stepped One-Step Center Pin Sets
Precision matched sets featuring a stepped outer guide sleeve and a solid core pin. Guaranteed concentric alignment for high-load deep core ejection.
Products in This Category
SKD61 Steel Stepped Ejector Sleeves & One-Step Center Pin Sets
Stepped outer guide pre-assembled sets.
SKD61 Steel Stepped Ejector Sleeves & One-Step Center Pin Sets
Precision concentric guide sets.
Selection Matrix: Stepped Ejector Sets
Compare product parameters for stepped guide set configurations:
| Series Code | Concentricity Limit | Guide Style | Sleeve Steel |
|---|---|---|---|
| 110200024340 | ≤ 0.015mm | Stepped Shoulder Guide | SKD61 (Nitrided) |
| 110200024250 | ≤ 0.012mm | Stepped Shoulder Guide (Precision) | SKD61 (Nitrided, Tight Clearance) |
Decision rule: Pre-assembled sets eliminate clearance verification — the factory matches each pin to its specific sleeve bore. For a detailed comparison of pre-assembled vs. separate purchasing, see our Pre-Assembled vs. Separate Ejector Sets guide.
Core Pin Replacement Protocol
Guidelines to replace worn center pins without losing original assembly concentricity:
Application Scenarios: Stepped Ejector Sets
Industrial applications requiring rigid stepped sleeve guide sets:
Automotive Interior Trims
Deep screw bosses in thick injection-molded automotive panels build up high mechanical resistance during release.
Why it fits: Stepped sleeves provide maximum column rigidity to prevent core pin deflection under high molding pressure.
Deep Cavity Electronic Enclosures
Electronic shells require perfectly centered interior core boss features to allow precise assembly alignment.
Why it fits: Stepped guides ensure core runout remains within 0.015mm over stroke lengths exceeding 100mm.
Frequently Asked Questions
What is the runout specification for stepped one-step center pin sets?+
How do you replace a center pin in a stepped one-step assembly without losing alignment?+
Are stepped center pin sets suitable for deep draw automotive molding?+
About Stepped One-Step Center Pin Sets
Stepped one-step center pin sets are factory-matched assemblies containing a stepped ejector sleeve and a corresponding center pin. Pre-alignment guarantees concentricity within tight runout tolerances, eliminating the risk of misaligned manual pairing. Designed for deep-draw automotive and appliance molds where the stepped structure provides column rigidity over long ejection strokes.
Engineering Resources
Need a Custom Quote?
Specify stepped set dimensions, material, and required runout tolerance. Factory-matched sets include concentricity verification report. Custom configurations available.