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Comprehensive Precision Mold Core, Sleeve & Pin Assortment
This full series integrates diversified precision mold components for injection and stamping molds, including forming sleeves, circular mold bushings, gear mold inserts, thin core pins, positioning washers and multi-step mold cylinders. The machining tolerance reaches ±0.002mm, with mirror polished surfaces, outstanding wear resistance and high-temperature stability, widely applied in electronics, automotive, medical and semiconductor precision molding production.

 

  • Main Products: Forming sleeve, mold bushing, gear insert, micro thin core pin, positioning washer, multi-step mold cylinder, special contour mold roller
  • Machining Precision: ±0.002mm ultra-high precision
  • Optional Materials: Mold steel, high-speed steel, tungsten steel, hard alloy, custom metal materials
  • Processing Technology: CNC turning, milling, inner & outer circle precision grinding, EDM, mirror superfinishing
  • Product Features: Perfect concentricity, burr-free inner cavity, uniform hardness, low friction demolding, long service life
  • Application Industries: Consumer electronics, automotive plastic connectors, medical miniature parts, semiconductor terminal components
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Detailed Introduction

This complete set of mold components covers all core molding functional parts required for precision molds. Mold sleeves and bushings shape the outer contour of plastic/metal products; gear inserts form complex tooth structures; ultra-thin core pins fabricate micro holes and narrow slots; positioning washers and stepped cylinders guarantee precise mold alignment during mass production. The dimensional accuracy, surface finish and hardness of these parts directly control product appearance, assembly tolerance and continuous mold operation stability.

All parts undergo standardized full-process precision manufacturing: CNC rough forming, vacuum heat treatment to stabilize hardness, dual-axis ultra-precision grinding to eliminate circular runout, EDM processing for special side cutouts and tooth profiles, plus final mirror polishing to reduce molding friction. Each finished component passes full inspection of concentricity, roundness and dimensional tolerance to eliminate defects such as product burrs, mold sticking and dimensional drift.

Customized production is supported based on 2D/3D drawings or physical samples. Material selection, surface coating and polishing standards can be adjusted according to molding temperature, workpiece material and daily output to satisfy diversified long-cycle precision manufacturing demands.

Specification Table

ItemDetails
Product NameComprehensive Custom Precision Mold Cores, Sleeves & Core Pins
Core Product RangeForming Sleeve, Mold Bushing, Gear Insert, Micro Thin Core Pin, Positioning Washer, Multi-Step Mold Cylinder, Contour Mold Roller
Machining Tolerance±0.002mm
Available MaterialsMold Steel, High-Speed Steel, Tungsten Steel, Hard Alloy, Custom Metal Materials
Manufacturing ProcessCNC Turning & Milling, Precision Inner/Outer Grinding, EDM Fine Machining, Mirror Polishing
Product AdvantagesStrict concentricity & roundness control, mirror smooth molding surface, excellent anti-wear and heat-resistant performance, consistent dimensional stability under cyclic molding
Application FieldsPrecision injection molding and thin-sheet stamping for micro connectors, medical consumables, automotive wiring terminals and miniature electronic housings

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