CNC Grinding Mold Parts

Non-Standard Precision Mold Components for Plastic Injection Molds

Product Overview

Our CNC grinding mold parts are customized non-standard precision components designed for plastic injection molds and die casting molds.

These parts are typically used as:

• Core pins

• Cavity inserts

• Mold sleeves

• Guide components

• Precision mold inserts

• Structural mold components

Manufactured through CNC machining followed by precision grinding, these components ensure tight tolerance control, dimensional stability, and long-term reliability in high-cycle mold applications.

All parts are produced strictly according to customer drawings.

Typical Applications

These non-standard precision mold parts are widely used in:

• Automotive plastic molds

• Electronic housing molds

• Medical device molds

• Cosmetic packaging molds

• Thin-wall packaging molds

• Industrial component molds

Especially suitable for multi-cavity molds requiring consistent matching accuracy.

Material Options

Available materials include:

• SKD61

• S136

• SKH51

• Stainless steel (304 / 316)

• Carbon steel

• Aluminum alloys (6061 / 6063)

Material selection depends on:

• Resin type

• Mold life requirement

• Wear resistance demand

• Production cycle

Heat treatment and surface hardening options are available.

Engineering Focus

Non-standard mold parts often determine the final performance of the mold assembly.

Key machining focus areas include:

1) Precision Grinding After Heat Treatment

Grinding is applied to:

• Functional diameters

• Matching surfaces

• Insert seats

• Guide areas

This ensures:

• Size tolerance within ±0.002 mm (depending on geometry)

• Axiality within 0.005 mm

• Verticality within 0.005 mm

• Surface roughness up to Ra0.6 or finer

Post-heat treatment grinding maintains dimensional stability.

2) Multi-Cavity Matching Accuracy

For high-cavity molds:

• Components are batch-machined

• Grinding is performed under controlled processes

• Critical features are matched for cavity-to-cavity consistency

This reduces flashing, misalignment, and assembly adjustment time.

3) Surface Treatment Options

Available surface treatments include:

• Nitriding

• TiN coating

• Anodizing

• Nickel plating

• Chrome plating

• Polishing

• Passivation

Surface selection depends on wear conditions and production requirements.

Manufacturing Capability

Our production processes include:

• CNC milling

• CNC turning

• Machining centers

• Wire EDM

• Surface grinding

• OD / ID grinding

Precision inspection equipment ensures dimensional control throughout production.

Supported file formats:

• SolidWorks

• Pro/Engineer

• AutoCAD

• IGS / STEP

• DXF

• PDF

Quality Control

Quality assurance includes:

• Raw material verification

• In-process dimensional checks

• Final inspection before shipment

• Matching inspection for assembly-critical components

Inspection reports are available upon request.

OEM / Non-Standard Custom Manufacturing

We provide:

• Built-to-Print manufacturing

• Reverse engineering from samples

• Small batch and mass production

• Replacement mold components

• Rapid quotation support

No standard size limitation — fully customized according to drawing.

Related Products

To support complete injection mold assemblies, we also supply:

• Core pins and cavity pins

• Mold core plates

• Ejector pins and sleeves

• Slide core units

• Die casting mold components

• Multi-cavity packaging mold spare parts

All components are manufactured for dimensional compatibility within mold systems.

Technical FAQ

Q1: What tolerance can be achieved through grinding?
Tolerance can reach ±0.002 mm depending on geometry and size.

Q2: Can non-standard parts be produced based on samples?
Yes. Reverse engineering and custom production are supported.

Q3: Is heat treatment available?
Yes. Heat treatment and surface hardening can be arranged according to requirements.

Q4: Do you support small quantities?
Yes. MOQ starts from 1 piece for non-standard parts.

Request a Quotation

To receive a quotation, please provide:

• 2D / 3D drawings

• Material specification

• Tolerance requirement

• Surface treatment requirement

• Quantity and delivery timeline

Our engineering team will review your specifications and provide a technical manufacturing proposal.