Precision Mold Components: SKD11 & SKH51 Guide Pins for Plastic Injection Molds

Product Overview

Senlan Precision manufactures SKH51 and SKD11 guide pins for plastic injection molds, designed to ensure accurate mold alignment and stable operation in high-cycle production. All guide pins are produced strictly under OEM / Built-to-Print requirements, focusing on dimensional accuracy, wear resistance, and long-term consistency for multi-cavity plastic mould systems.

Key Features & Technical Advantages

• Material options: SKH51 high-speed steel or SKD11 cold-work die steel

• Excellent wear resistance and compressive strength

• High straightness and concentricity for precise mold guidance

• Stable performance in multi-cavity and high-frequency injection molds

• Precision grinding for smooth sliding and reduced friction

• Fully customized dimensions, tolerances, and surface treatment per drawings

Application Scenarios / Industry Applications

• Plastic injection molds for bottle caps and closures

• Daily packaging and household product molds

• Medical consumable and syringe molds

• High-cavity, high-output injection mould systems

• Replacement guide pins and mold maintenance parts

Mold Structure & Design Description

Guide pins play a critical role in mold alignment and repeatability. SKH51 and SKD11 guide pins are typically installed between moving and fixed mold plates to ensure accurate positioning, minimize offset, and protect cavity and core components from uneven wear during mold opening and closing cycles.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision ensures consistent quality through advanced machining and inspection:

• MAKINO CNC machining centers (Japan)

• HARDINGE CNC turning machines (USA)

• Precision cylindrical grinding and surface grinding

• EDM for special structures and tolerances

• Capability to control tight tolerances required for mold guiding systems

Custom Development / OEM Cooperation Process

1. Review of customer drawings and tolerance requirements

2. Material confirmation (SKH51 / SKD11) and heat treatment specification

3. CNC machining and precision grinding

4. In-process and final dimensional inspection

5. Surface treatment (if required)

6. Export packaging and delivery

All guide pins are manufactured strictly according to OEM / Built-to-Print standards.

Quality Control & Export Experience

• Incoming raw material inspection and traceability

• Dimensional inspection for straightness, diameter, and fit

• Final inspection before shipment

• Stable export experience supporting global mold makers and packaging manufacturers

Related Products Recommendation

• Mold guide bushes and guide sleeves

• Precision ejector pins and core pins

• Mold locating components

• Customized mold spare parts for multi-cavity systems

FAQ – Technical & Procurement

Q1: What is the difference between SKH51 and SKD11 for guide pins?
SKH51 offers higher wear resistance and hardness, while SKD11 provides good toughness and cost efficiency. Selection depends on mold cycle and load conditions.

Q2: Can guide pins be manufactured according to our drawings only?
Yes. All products are strictly OEM / Built-to-Print.

Q3: What tolerances can be achieved?
Tolerances depend on pin size and application; tight control on straightness and diameter is achievable through precision grinding.

Q4: Are surface treatments available?
Yes. Polishing, coating, or other treatments can be applied as specified.

Q5: Can inspection reports be provided?
Yes. Dimensional inspection reports are available upon request.

Get a Quote

For SKH51 / SKD11 guide pins for plastic injection mould parts, please share your drawings or technical specifications. Senlan Precision will provide a reliable OEM manufacturing solution focused on accuracy, durability, and long-term mold performance.