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China factory - Senlan Precision Parts Co.,Ltd.

Senlan Precision Parts Co.,Ltd.

  • China,Dongguan ,Guangdong
  • Verified Supplier
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China SS420 Precision Core Insert (Mold Core) for Plastic Injection Molds
China SS420 Precision Core Insert (Mold Core) for Plastic Injection Molds

  1. China SS420 Precision Core Insert (Mold Core) for Plastic Injection Molds
  2. China SS420 Precision Core Insert (Mold Core) for Plastic Injection Molds
  3. China SS420 Precision Core Insert (Mold Core) for Plastic Injection Molds
  4. China SS420 Precision Core Insert (Mold Core) for Plastic Injection Molds

SS420 Precision Core Insert (Mold Core) for Plastic Injection Molds

  1. MOQ： 1pc
  2. Price： 100-1000
  3. Get Latest Price
Payment Terms T/T,Western Union
Supply Ability 1000pcs/month
Delivery Time 15 working days
Packaging Details Carton, Wooden Box
Feature Low Cost, Long life
Mould Injection Mold
Accuracy 0.005
Materials STAVAX/1.2083/M340
Parts Name CNC Milling Parts
Design Software CAD UG ProE Solidworks
Quality 100% Inspection
Thread Process by grinding
Industry Packaging
Resistance Corrosion-resistant
Polishness Ra0.6
Dimensions As Per Drawings
Processing CNC lathe, Grinding etc
Cavity Number Single/Multi
Heat Treatment Customized
Specification Custimized
Packing Bubble anti - collision bag
Concentricity 0.01mm
Brand Name SENLAN
Model Number Customized
Certification ISO9001:2015
Place of Origin CHINA

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T,Western Union Supply Ability 1000pcs/month
Delivery Time 15 working days Packaging Details Carton, Wooden Box
Feature Low Cost, Long life Mould Injection Mold
Accuracy 0.005 Materials STAVAX/1.2083/M340
Parts Name CNC Milling Parts Design Software CAD UG ProE Solidworks
Quality 100% Inspection Thread Process by grinding
Industry Packaging Resistance Corrosion-resistant
Polishness Ra0.6 Dimensions As Per Drawings
Processing CNC lathe, Grinding etc Cavity Number Single/Multi
Heat Treatment Customized Specification Custimized
Packing Bubble anti - collision bag Concentricity 0.01mm
Brand Name SENLAN Model Number Customized
Certification ISO9001:2015 Place of Origin CHINA
High Light CNC milling precision mould parts ，automation industry CNC machining parts ，precision CNC mould parts with warranty
SS420 Precision Core Insert for Plastic Injection Molds
This SS420 precision mold core is a critical functional component used in plastic injection molds. It forms key internal features of the molded part and directly impacts molding stability, part consistency, and tool life.
As a custom precision mold components manufacturer, we machine SS420 mold cores to customer drawings with strict control of datums, fit surfaces, and dimensional tolerances. SS420 stainless steel offers a strong balance of corrosion resistance, hardness potential, and polishability.
Product Overview
A mold core is the tooling element that forms the internal geometry of a plastic part in an injection mold. Compared with general mold plates, mold cores require tighter control in critical areas.
Critical Control Areas
  • Core profiles and shut-off regions
  • Reference datums and locating surfaces
  • Mating fits with the cavity side
  • Cooling-related interfaces
  • Ejection and vent-related features
Material: SS420 Stainless Steel
SS420 is widely used for injection mold components where corrosion resistance and stable machining performance are important. It can be heat treated to achieve practical working hardness while retaining good surface finishing capability.
Typical Machined Features
  • Precision contours and functional surfaces
  • Holes/slots for assembly and alignment
  • Shut-off and parting-related areas
  • Polished or fine-finished working faces
Applications
This component is used in plastic injection molds as a mold core / core block.
Since the end product is not specified, we focus on the component's role inside an injection mold system rather than claiming specific industries or products.
Common Use Cases
  • New mold build core manufacturing
  • Core replacement for maintenance or design updates
  • Core optimization for improved fit, finish, or dimensional stability
Precision & Manufacturing Capabilities
Manufacturing Processes
  • High-precision CNC milling
  • Surface and profile grinding
  • EDM / wire EDM
  • Controlled heat treatment coordination
  • Polishing / surface finishing per drawing
Quality Control
  • Datum-based inspection for assembly consistency
  • Dimensional inspection reports available
  • Incoming material verification + traceability options
  • Final visual and surface verification
We manufacture to your specified tolerance system. If no tolerance is defined, we can propose a practical tolerance plan for approval.
Customer Value for Precision Mold Core Manufacturing
Stable Mold Performance Starts with a Reliable Core
Better Dimensional Repeatability
Accurate core geometry reduces variation and supports consistent molding.
Improved Assembly Fit
Controlled datums and mating surfaces improve drop-in fit, reducing hand-fitting time.
Longer Service Life
SS420 offers good corrosion resistance and hardness potential for long runs.
Faster Communication
Tooling-experienced supplier highlights manufacturability risks early.
What We Need for Quotation
  • 3D CAD file (STEP/IGES preferred) + 2D drawing (PDF/DWG)
  • Material requirement: SS420 (confirm equivalent grade accepted if applicable)
  • Heat treatment requirement: target hardness range (if specified)
  • Surface finish requirements (Ra, polishing level, or visual standard)
  • Critical dimensions and tolerances (GD&T if available)
  • Assembly references: mating part info or datum definition
  • Quantity and desired lead time
  • Any special requirements: marking, traceability, inspection format, packaging
If you only have a 3D file, we can still quote—just tell us which surfaces are critical and how the part fits in your mold.
Frequently Asked Questions
General
Are you a trading company or a manufacturer?
We are a custom precision mold components manufacturer, focused on CNC machining, EDM, grinding, and finishing for injection mold parts.
Can you sign NDA and support engineering communication?
Yes. NDA support is available, and our team can communicate directly on datums, tolerances, and manufacturability.
Do you provide inspection reports?
Yes. We can provide dimensional inspection reports based on your drawing requirements and critical dimensions list.
Mold Core Specific
What's the difference between a mold core and an insert?
In injection molding terminology, "core" refers to the element forming internal features of the part. "Insert" can mean a removable tooling element; some customers call a core a "core insert." To avoid confusion, we confirm the function and assembly location based on your drawing.
Why choose SS420 for mold cores?
SS420 is selected when corrosion resistance and stable finishing are important, and when a practical hardness level is needed for long-cycle mold performance.
Can you match an existing core for replacement?
Yes. If you provide the original drawing/CAD (or sample + measured dimensions), we can manufacture replacement cores to match fit requirements.
Engineering Version
Send your STEP + 2D drawing and indicate critical datums/tolerances. We'll review manufacturability and provide a production plan for an SS420 precision mold core with stable assembly fit.
Precision SS420 mold core manufacturing example 1
Precision SS420 mold core manufacturing example 2
Precision SS420 mold core manufacturing example 3
Precision SS420 mold core manufacturing example 4

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Distributor/Wholesaler,Exporter,Seller

  • Year Established:

    2006

  • Total Annual:

    2000000-2500000

  • Employee Number:

    >100

  • Ecer Certification：

    Verified Supplier

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Get in touch with us

  • Reach Us
  • Senlan Precision Parts Co.,Ltd.
  • NO.27,ShangLang Road,XiaBian District,Chang'an town, Dongguan China
  • https://www.precision-mouldparts.com/

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