Product Overview

Senlan Precision manufactures high-precision S136 threaded core gear shafts and gear rods for plastic injection moulding systems. These components are engineered for mould mechanisms requiring precise rotary motion, stable torque transmission, and long service life. All parts are produced strictly under OEM / Built-to-Print requirements, ensuring full conformity to customer drawings and mould designs.

Key Features & Technical Advantages

• Made from S136 stainless mould steel with excellent corrosion resistance

• High dimensional accuracy for threaded and gear profiles

• Stable concentricity and pitch control for smooth rotational movement

• Suitable for high-cycle and multi-cavity injection moulds

• Precision machining and fine finishing for reduced wear

• Custom manufacturing only – no standard parts

Application Scenarios / Industry Applications

• Plastic bottle cap injection moulds

• Rotational core systems for threaded closures

• Packaging moulds with unscrewing or gear-driven mechanisms

• Medical plastic moulds requiring corrosion-resistant components

• Precision injection mould tooling for daily packaging products

Mold Structure & Design Description

Threaded core gear shafts and gear rods are key transmission elements in unscrewing and rotary mould systems. They convert drive motion into controlled rotational movement of threaded cores. Precise gear geometry, accurate thread profiles, and controlled shaft concentricity are essential to ensure smooth operation, reduced backlash, and consistent moulding quality in multi-cavity moulds.

Manufacturing Capability & CNC Machining Capacity

To achieve high precision and repeatability, Senlan Precision operates advanced machining equipment:

• MAKINO high-precision CNC machining centers (Japan)

• HARDINGE CNC turning systems (USA)

• CNC gear cutting and thread machining

• Precision grinding for shaft concentricity and surface quality

• Controlled heat treatment and stress relief

Typical machining accuracy can reach ±0.002 mm, depending on design and structure.

Custom Development / OEM Cooperation Process

1. Customer drawing and technical requirement review

2. Material confirmation and machining process planning

3. CNC turning, milling, threading, and gear machining

4. Precision inspection and dimensional verification

5. Packaging and export delivery

All projects are handled under a Built-to-Print OEM workflow.

Quality Control & Export Experience

• Incoming raw material inspection and traceability

• In-process inspection of threads, gears, and concentricity

• Final dimensional and functional checks

• Quality management suitable for medical and packaging mould industries

• Extensive export experience supporting global mould manufacturers

Related Products Recommendation

• Threaded core inserts for injection moulds

• Gear-driven unscrewing mould components

• Precision core pins and sleeves

• Multi-cavity mould transmission parts

FAQ – Technical & Procurement

Q1: Are these gear shafts available as standard parts?
No. All threaded core gear shafts are custom-made according to drawings.

Q2: Can S136 be replaced with other materials?
Yes. Alternative mould steels can be discussed based on application and environment.

Q3: Are these suitable for high-cavity moulds?
Yes. They are designed for stable operation in multi-cavity injection mould systems.

Q4: How is gear accuracy controlled?
Through CNC gear machining, precision inspection, and controlled finishing processes.

Q5: Do you support prototype and production orders?
Yes. Prototype, trial, and mass production orders are all supported.

Get a Quote

For pricing, lead time, or technical evaluation of S136 threaded core gear shafts and gear rods for plastic injection moulding, please contact Senlan Precision with your drawings. Our engineering team will provide a detailed quotation and manufacturing feedback.