Editorial Technical Reference

Container Lock System

This page explains how Container Lock System is classified within Other Transport Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical or hydraulic locking mechanism that secures shipping containers to terminal tractors during transport operations.

Product Specifications

Technical details and manufacturing context for Container Lock System

Definition
The Container Lock System is a critical safety component of terminal tractors designed to firmly secure ISO shipping containers during movement within port terminals, yards, and intermodal facilities. It prevents container shifting, tipping, or detachment during transport, ensuring operational safety and efficiency. The system typically uses hydraulic cylinders or mechanical actuators to engage locking pins or twist locks into the corner castings of shipping containers. When activated, the locks extend and rotate to securely grip the container's standardized corner fittings, creating a rigid connection between the container and the tractor chassis. This product is a component used in the manufacturing of terminal tractors, classified under Other Transport Equipment Manufacturing. It is designed for ISO standard containers (ISO 1496-1) and operates within specified parameters: rated load capacity of 20–45 t, operating pressure of 1.0–1.6 MPa, locking force of 150–250 kN, operating temperature range of -40 to 85 °C, protection rating of IP54–IP65, locking time of 2–5 seconds, weight of 80–150 kg, material grade Q345B (high-strength alloy steel), hydraulic oil viscosity of 32–46 cSt, maximum lateral force of 50–80 kN, voltage of 24 V DC (±10%), and cycle life of 50,000–100,000 cycles. These values are reference ranges and must be verified for the specific model and application. The system is designed to meet ISO 1496-1 for container dimensions and testing for pressure ratings, IEC 60529 for ingress protection, GB/T 1591 for material grade, ISO 3448 for viscosity classification, and ISO 7638 for electrical connectors. Always confirm model-specific values and standards with the legal manufacturer or supplier before procurement or use.
Working Principle
The system operates via hydraulic or mechanical actuation. When activated, locking pins or twist locks extend and rotate to engage the corner castings of the container, creating a rigid connection. Hydraulic systems use cylinders powered by the tractor's hydraulic circuit, while mechanical systems use manual or power-assisted levers. The locks are designed to withstand rated loads and lateral forces, ensuring secure retention during transport. The system includes sensors and solenoid valves for control, operating at 24 V DC. The locking time is typically 2–5 seconds, and the system is protected against dust and water jets (IP54–IP65).
Common Materials
High-strength alloy steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Load Capacity20–45 tExceeding rated load risks structural failure.ISO 1496-1
Locking Force150–250 kNEnsures secure container retention during transport.
Operating Temperature-40–85 °COutside range, seals and hydraulics may fail.ISO 1496-1
Protection RatingIP54–IP65Protects against dust and water jets.IEC 60529
Locking Time2–5 sFaster locking improves cycle time.
Weight80–150 kgAffects terminal tractor payload.
Material GradeQ345BHigh-strength steel for durability.GB/T 1591
Hydraulic Oil Viscosity32–46 cStViscosity affects system response at low temp.ISO 3448
Max. Lateral Force50–80 kNResists side loads during cornering.
Voltage24 ±10% V DCFor solenoid valves and sensors.ISO 7638
Cycle Life50000–100000 cyclesDefines maintenance interval.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Locking Pin Part
    Engages with container corner casting to secure container
    Material: Hardened alloy steel
  • Actuator Cylinder
    Provides mechanical force to extend/retract locking mechanism
    Material: Steel with hydraulic seals
  • Control Valve
    Regulates hydraulic/pneumatic flow to actuate locks
    Material: Brass or stainless steel
  • Sensors
    Confirm the locks are extended and seated before the tractor moves.

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 300 bar (hydraulic systems)
other spec: Container weight capacity: 20-40 tons, Locking force: 50-150 kN
temperature: -40°C to +80°C
Media Compatibility
✓ Standard ISO shipping containers ✓ Corrugated steel surfaces ✓ Marine-grade aluminum containers
Unsuitable: Highly corrosive chemical transport environments
Sizing Data Required
  • Container weight and dimensions
  • Tractor coupling interface type
  • Required locking force based on transport conditions

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Mechanical wear of locking components
Cause: Repeated engagement/disengagement cycles under load leading to material fatigue and surface degradation, exacerbated by inadequate lubrication or contamination
Corrosion-induced seizure
Cause: Exposure to moisture, saltwater, or corrosive chemicals causing oxidation and rust formation in metal components, particularly in marine or industrial environments
Maintenance Indicators
  • Audible grinding or scraping noises during operation indicating metal-on-metal contact
  • Visible misalignment or excessive play in locking mechanism when engaged
Engineering Tips
  • Implement regular lubrication schedule with corrosion-inhibiting grease specifically formulated for mechanical locking systems
  • Install protective covers or seals to shield critical components from environmental contaminants and moisture ingress

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 1161:2016 - Series 1 freight containers - Corner fittings ANSI MH5.1.2-2016 - Industrial and Commercial Steel Locking Devices DIN 15185-1:2016 - Container Handling Equipment - Locking Systems

Quoted from the published standard.

Manufacturing Precision
  • Locking Pin Diameter: +/-0.05mm
  • Housing Flatness: 0.15mm across mating surface
Quality Inspection
  • Load Cycle Fatigue Test (10,000 cycles minimum)
  • Hardness and Material Verification Test (Rockwell C scale)
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
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Supplier transparency
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Manufacturers of Container Lock System

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Chongqing Toho-Rongkee Electronic and Machinery Co., Ltd.
Chongqing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Container Securing System”
View source page ↗ toholift.com · recorded 2026-09-08

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Frequently Asked Questions

What is the rated load capacity of the Container Lock System?

The rated load capacity is 20–45 tonnes, as per ISO 1496-1. Exceeding this range risks structural failure. Always verify the exact capacity for your specific model.

What is the locking force and why is it important?

The locking force is 150–250 kN, ensuring secure container retention during transport. This force prevents shifting or detachment. Verify the locking force for your application.

What is the operating temperature range?

The operating temperature range is -40 to 85 °C, per ISO 1496-1. Outside this range, seals and hydraulics may fail. Check the temperature limits for your environment.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Container Lock System.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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