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315T Junction Box Press press view 1
Junction Box · Hydraulic Press Machine

315T Four Column Hydraulic Press for SMC Junction Box

315T Rated Capacity
100 mm/s Slider Down Speed
7–12 mm/s Slider Pressing Speed
100 mm/s Slider Return Speed
315T Junction Box Press press view 1
315T Junction Box Press press view 2
315T Junction Box Press press view 3
315T Junction Box Press press view 4

01 — Press System

315T Four Column Hydraulic Press Machine

This system produces high-quality, weather-proof, and electrically insulated junction boxes with high mechanical strength. It achieves fast, sustainable, and cost-effective manufacturing using an integrated cooling system for rapid cycle times.

Use Case

The 315 ton four-pillar press performs precision compression molding of glass fiber reinforced thermoset SMC composites into durable electrical enclosures. It delivers high dielectric strength, flame retardancy, UV resistance, and tight dimensional accuracy for demanding outdoor applications.

  • Core Applications: Precision compression molding of high-strength, flame-retardant, and weather-resistant electrical enclosures requiring superior dielectric insulation and long-term durability.
  • Material: Glass fiber reinforced unsaturated polyester or vinyl ester thermoset resin blended with calcium carbonate, alumina trihydrate, UV stabilizers, and fire retardants.
  • Products Processed: Insulated electrical junction boxes, protective utility housing units, and outdoor electrical enclosures engineered for severe environmental exposure.
  • Why 315 Ton Hydraulic Press: Delivers exact pressure, temperature, and dwell control at closing speeds up to 200 mm per Sec, ensuring uniform material flow and high volume output exceeding 15 units per Hour.

02 — Technical Specifications

SM 315 HP – HYDRAULIC PRESS MACHINE COMPLETE TECHNICAL DATA

SM 315 HP – Hydraulic Press Machine delivers precise and reliable composite molding for SMC junction box production with complete technical efficiency. It ensures consistent quality, excellent electrical insulation, and durable enclosure manufacturing.

Capacity & Structural Design

  • Rated Capacity: 315 Tons (≈ 3090 kN)
  • Type: Fourpillar hydraulic hot press
  • Frame: Welded steel structure, stress-relieved
  • Safety factor: ≥ 1.30–1.35
  • Deflection: ≤ 0.05–0.07 mm

Hydraulic System

  • Cylinder: Doubleacting
  • Bore: 300–350 mm
  • Stroke: 300–600 mm
  • Working pressure: 25–30 MPa
  • Control: Proportional / servo hydraulic (recommended)

Compression Cycle

  1. Fast mold closing
  2. Precompression (SMC spread)
  3. Full compression (forming stage)
  4. Thermoset curing (heat + pressure)
  5. Dwell (2–4 minutes typical)
  6. Controlled decompression
  7. Mold opening

Heated Platen System

  • Heating type: Electric or thermal oil system
  • Temperature range: 130–170°C
  • Temperature uniformity: ±2–3°C
  • Multi-zone heating

Working Envelope

  • Platen size:
    • Standard: 600 × 600 mm
    • Optional: 800 × 800 mm
  • Daylight: 600–1000 mm
  • Column diameter: 100–140 mm

Control & Automation

  • PLC (Siemens / Mitsubishi / Delta)
  • HMI with recipe-based control
  • Parameters monitored:
    • Pressure
    • Temperature
    • Time
  • Data logging (QA compliance)
  • Safety PLC with interlocks

SM 315 HP — Model Specifications

  • Nominal Force: 3150 KN
  • Maximum Hydraulic Pressure: 25 MPa
  • Max Opening Height of the Slider: 1250 mm
  • Max Stroke of the Slider: 800 mm
  • Effective Bed Size: 1260 × 1160 mm
  • Slider Down Speed: 100 mm/s
  • Slider Pressing Speed: 7–12 mm/s
  • Slider Return Speed: 100 mm/s
  • Ejector Cylinder Nominal Force: 300 KN
  • Stroke of the Ejection Cylinder: 300 mm
Production Case Study

SMC Junction Box Production Line

SMC CompositeMaterial
400 mm x 300 mm x 210 mmBox Size
90 – 120 SecCycle Time
140–160°CTemperature
High structural dimensional stability
Exceptional dielectric insulation strength
Superior weather moisture resistance
Excellent flame retardant rating
Fast efficient cycle time
Reduced overall scrap rate

03 — Die / Mold System

Precision SMC Junction Box Die Mold Engineering

Precision SMC Junction Box Die Mold Engineering ensures accurate enclosure dimensions, uniform wall thickness, and precise sealing features. It delivers consistent quality, electrical safety, and durable performance for reliable junction box production.

Technical Specifications

Mold Type

  • Precision compression mold (matched die)
  • Thermoset SMC mold

Mold Materials

  • Tool steel: H13 / P20 / CrMo alloy
  • Hardness: 48–55 HRC
  • Surface coating: Chrome / anti-stick optional

Mold Construction

  • Upper mold: Outer surface geometry
  • Lower cavity: Interior structure
  • Precision guide pillars: Alignment accuracy ±0.02 mm
  • Ejection system: Hydraulic ejectors

Heating System

  • Internal heating channels
  • Multi-zone heating
  • Uniform heat distribution

Venting & Degassing

  • Air vent grooves
  • Resin gas escape channels

Prevents:

  • Air bubbles
  • Blisters
  • Surface defects

Surface Finish

AreaRequirement
Inside boxSmooth for insulation
Outside surfaceSmooth / textured
Sealing areaHigh precision finish

Mold Life: 200,000 – 400,000 cycles

Case Study (Die Performance)

Precision SMC Junction Box Die Mold

300 × 200 × 150 mmSize
P20 AlloyDie Mold Steel
48 – 52 HRCHardness
High wear abrasion resistance
Excellent surface mirror finish
Uniform rapid heat distribution
Superior mold release performance
Extended overall tool lifespan
Precise zero-flash dimensional accuracy

04 — Product Application

Where SMC Junction Box Are Used

SMC junction boxes are widely used in electrical and power distribution systems for safe housing of wiring connections. They are ideal for industrial, commercial, and infrastructure applications requiring durable, weather-resistant, and electrically insulating enclosures.

Industry Applications

Electrical & Power Industry

In the electrical & power industry, SMC junction boxes are used as junction boxes, switchgear enclosures, and distribution boxes. They provide excellent electrical insulation, durability, and protection in demanding power applications.

Outdoor Electrical Infrastructure

In outdoor electrical infrastructure, SMC junction boxes are used for street lighting control systems, solar junction boxes, and weatherproof electrical enclosures. They provide durable, corrosion-resistant, and reliable protection in harsh environmental conditions.

Infrastructure & Smart Cities

In infrastructure & smart cities, SMC junction boxes are used for telecom enclosures, utility control boxes, and smart metering systems. They ensure durable, weather-resistant, and electrically safe housing for modern utility networks.

Industrial Plants

In industrial plants, SMC junction boxes are used for electrical housings in chemical plants and corrosion-resistant enclosures. They ensure safe, durable, and reliable performance in harsh and chemically exposed environments.

IndustryScenario
Electrical Junction box production
Utilities Power distribution boxes
Infrastructure Outdoor control systems
Renewable Energy Solar junction boxes
Industrial Corrosion-resistant electrical enclosures

Finished Product Gallery

315T Junction Box Press finished product 1
315T Junction Box Press finished product 2
315T Junction Box Press finished product 3
315T Junction Box Press finished product 4
315T Junction Box Press finished product 5
315T Junction Box Press finished product 6

05 — Key Advantages

Why Choose the 315-Ton Sinter Hydraulic Press

It offers precise compression and consistent curing for high-quality SMC junction box production. Designed for reliability, it ensures excellent electrical insulation, durability, and efficient manufacturing performance.

01

Low defect rate

Ensures precise molding and controlled curing, minimizing production defects. It delivers consistent quality and reliable performance in SMC junction box manufacturing.

02

Efficient cycle time

Enables faster production cycles with optimized pressure and curing control. It improves productivity while maintaining consistent quality in SMC junction box manufacturing.

03

Excellent electrical insulation

Poduces SMC junction boxes with superior insulating properties. It ensures safe, reliable performance in electrical and high-voltage applications.

04

Flame retardant

Produces SMC junction boxes with excellent flame-resistant properties. It enhances safety by reducing fire risks and ensuring reliable performance in electrical applications.

05

Waterproof and dustproof

Produces SMC junction boxes with excellent sealing properties, ensuring protection against water and dust ingress. It enhances durability and reliability in outdoor and harsh environments.

06

Corrosion resistant

Produces SMC junction boxes with excellent resistance to rust, chemicals, and harsh environmental conditions. It ensures long-lasting durability and reliable performance in demanding applications.

Get In Touch

Ready to Build Your
Production Line?

Our engineering team will size the press, die system, and automation to your target output, tile profile, and material spec. Quotations typically within 48 hours.

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