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PP Material Plastic Injection Mold Various Cavities for Lining of cover Tray of axis

Our specialized PP (Polypropylene) plastic injection mold is engineered exclusively for manufacturing shaft cover linings and shaft trays—critical components for machinery, automotive drivetrains, and industrial equipment. Optimized for food-grade, chemical-resistant, and high-impact PP materials, this mold offers flexible multi-cavity configurations (1–32 cavities) to match low-to-high volume production demands. It delivers consistent, dimensionally accurate parts with tight tolerances (±0.03mm), ensuring seamless assembly and long-term reliability of shaft systems.
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  • YIXUN mold

  • 8480419090

Product Overview

Our specialized PP (Polypropylene) plastic injection mold is engineered exclusively for manufacturing shaft cover linings and shaft trays—critical components for machinery, automotive drivetrains, and industrial equipment. Optimized for food-grade, chemical-resistant, and high-impact PP materials, this mold offers flexible multi-cavity configurations (1–32 cavities) to match low-to-high volume production demands. It delivers consistent, dimensionally accurate parts with tight tolerances (±0.03mm), ensuring seamless assembly and long-term reliability of shaft systems.

Core Features

  1. PP Material-Specific Optimization
    • Tailored mold flow channels and cooling systems to minimize PP’s shrinkage rate (controlled at ≤1.5%), avoiding warping or deformation of thin-walled shaft linings and trays.

    • Compatible with a full range of PP grades: food-safe PP (for food processing machinery shafts), reinforced PP (for heavy-duty industrial equipment), and chemical-resistant PP (for corrosive working environments).

    • Supports recycled PP materials for cost reduction and eco-friendly production without compromising part performance.

  2. Versatile Multi-Cavity Design
    • Customizable cavity counts (1/2/4/8/16/32) to meet diverse production needs: single-cavity for high-precision prototype parts, multi-cavity for mass production (up to 100,000+ units/month).

    • Interchangeable cavity inserts for quick product size switching, reducing mold replacement costs and downtime.

    • Precision-machined core and cavity (adopting S136 stainless steel) for wear resistance, ensuring a mold service life of ≥800,000 shots.

  3. High-Efficiency Molding System
    • Integrated hot runner system (optional) eliminates cold runners, cutting PP material waste by 20% and shortening cycle time by 18%.

    • Uniform cooling channels distributed around cavity contours ensure fast, even cooling, preventing internal stress in shaft components.

    • Self-lubricating guide pins and ejector systems guarantee smooth demolding, avoiding scratches on the surface of shaft linings.

Application Scenarios

This mold is ideal for producing PP components for:
  • Automotive Industry: Drivetrain shaft cover linings, transmission shaft trays, axle protection components.

  • Industrial Machinery: Motor shaft linings, gearbox shaft support trays, pump shaft anti-friction liners.

  • Agricultural Equipment: Farm machinery shaft dust-proof linings, harvesting equipment shaft trays.

  • Food Processing Machinery: Sanitary shaft cover linings.

Why Choose Our PP Injection Mold?

  • Component-Specific Design: Focused on shaft cover linings and trays, solving common pain points such as PP warping, poor fit, and short service life.

  • Cost-Effective Production: Multi-cavity design reduces per-unit molding costs; compatibility with recycled PP further lowers material expenses.

  • One-Stop Technical Support: From mold design, DFM (Design for Manufacturability) analysis, prototype testing to mass production, we provide full-process guidance.

  • Quality Assurance: 12-month mold warranty + free on-site maintenance guidance; parts are 100% inspected via CMM (Coordinate Measuring Machine) before delivery.


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Yixun is the China first generation mold maker, specialize in mold and moulding, provide one-stop plastic manufacturing service, feature in building medical and healthcare device tooling.
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