Custom CNC Milled Mold Parts | Precision Square Components in SKD61, YK30, 40Cr

Product Overview

Senlan Precision manufactures square-type precision mold parts produced by CNC milling from YK30, 40Cr, SKD61, and S45C tool steels. These components are designed for injection mould tooling and precision machine assemblies where structural rigidity, dimensional stability, and repeatable accuracy are required. All parts are supplied strictly Built-to-Print according to customer drawings.

Key Features & Technical Advantages

• Multiple material options: YK30 / 40Cr / SKD61 / S45C

• CNC milling for square and prismatic precision mold parts

• Stable dimensional control for mould alignment and assembly accuracy

• Suitable for heat treatment, surface finishing, or coating as specified

• Consistent flatness, perpendicularity, and edge geometry

• Custom / OEM / Built-to-Print manufacturing only

Application Scenarios / Industry Applications

• Injection mould tooling structures

• Bottle cap and packaging mould assemblies

• Mold bases, support blocks, and positioning components

• Medical plastic mould structural parts

• Precision CNC machine tool components used within mould systems

Mold Structure & Design Description

Square precision mold parts typically function as support, positioning, or load-bearing elements within injection mould assemblies. Material selection (YK30, 40Cr, SKD61, or S45C) is based on required strength, wear resistance, and thermal performance. CNC milling ensures accurate outer geometry, controlled flatness, and reliable fit with adjacent mold components.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision is equipped with advanced machining resources to ensure stable and repeatable quality:

• MAKINO high-precision CNC machining centers (Japan)

• HARDINGE CNC systems (USA)

• Multi-axis CNC milling for square and complex geometries

• Precision surface grinding for flatness and parallelism control

• Optional heat treatment coordination and secondary finishing

Typical machining accuracy can reach ±0.01 mm, depending on part size and design.

Custom Development / OEM Cooperation Process

1. Customer drawing and technical requirement review

2. Material confirmation (YK30 / 40Cr / SKD61 / S45C)

3. CNC milling and secondary machining processes

4. Dimensional inspection and quality verification

5. Final approval, marking, and export-safe packaging

All projects follow a Built-to-Print OEM workflow with no standard off-the-shelf parts.

Quality Control & Export Experience

• Incoming material inspection and traceability

• In-process and final dimensional measurement

• Flatness, perpendicularity, and tolerance verification

• Long-term export experience serving packaging and medical mold customers

• Protective packaging to prevent corrosion and transport damage

Related Products Recommendation

• Precision mold inserts and support blocks

• Positioning and locating components

• Mold base plates and custom machined plates

• CNC-machined structural mold parts

FAQ – Technical & Procurement

Q1: How do I choose between YK30, 40Cr, SKD61, and S45C?
Material selection depends on load, wear resistance, heat exposure, and service life requirements. Engineering support is available during review.

Q2: Are heat-treated parts available?
Yes. Heat treatment can be applied according to drawing specifications.

Q3: What tolerances can be achieved?
Typical CNC milling tolerances are ±0.01 mm, subject to part geometry and size.

Q4: Do you supply standard sizes?
No. All parts are manufactured Built-to-Print.

Q5: Can small batch or replacement orders be supported?
Yes. Prototypes, small batches, and replacement components are supported.

Get a Quote

For pricing, lead time, or technical consultation on square precision mold parts made from YK30, 40Cr, SKD61, or S45C, please contact Senlan Precision with your drawings. Our engineering team will provide a detailed evaluation and quotation.