Spare part for the shipping container door No. 5 – Bearing Bracket Outer S

What is Bearing Bracket Outer S for a shipping container?

Spare part Bearing Bracket Outer S is a specialized steel component used to ensure proper function of the doors of standard ISO shipping containers. In English terminology you will encounter names such as Shipping Container Bearing Bracket Outer Small, Locking Bar Guide, or simply Small Outer Bearing Bracket.

Component significance:

• Serves as an external support and guide point for the vertical locking bar of the container door.
• Allows smooth rotational movement of the bar when closing or opening the door.
• Made of hot‑dip galvanized structural steel (e.g., Q235B or SS400), providing high resistance to corrosion and mechanical wear.
• In combination with the inner bracket and a plastic split bush, it forms a complete system that minimizes friction and protects both the steel bar and the bracket from excessive wear and damage.

Brief breakdown of the name:

• Spare part: Product intended to replace a worn or damaged component.
• Bearing Bracket: Bracket that carries the shaft (in this case the locking bar).
• Outer: Located on the outer side of the container door.
• S (Small): “Small”, indicating its size and position between larger brackets.
• Shipping container: Standardized unit for multimodal transport.

Functional role in the container door locking system

The doors of a shipping container are a complex assembly that must withstand extreme loads, climatic influences, and also guarantee cargo security. A key component of this assembly are vertical locking bars (locking bars), which lock and unlock the doors when rotated.

Locking bar assembly diagram:

Operating principle:
When the door handle is turned, the locking bar rotates within the bearing brackets. The main role is played by the split plastic bush – it surrounds the locking bar inside the bracket and ensures smooth operation without metal‑to‑metal friction, preventing jamming and extending the life of the whole mechanism.

Locking bar configuration:

• Each bar is secured at a minimum of four points: two large brackets (L) – top and bottom, and two or more small brackets (S) – between them.

Anatomy, variants and technical specifications

Variants:

(Dimensions and weights may vary by manufacturer; always verify compatibility with the specific container.)

Material and surface treatment:

• Structural steel Q235B/SS400: Provides strength and impact resistance as well as long‑term load bearing.
• Hot‑dip galvanizing: Protection against corrosion and aggressive marine environment.
• Split bush: Self‑lubricating plastic (Nylatron, PA6), resistant to wear, UV radiation, chemicals and temperature fluctuations.

Standards and compatibility:

All quality brackets must comply with ISO 6346 (identification and marking of containers) and ISO 1496 (construction requirements). Use of non‑certified parts may invalidate the CSC label.

Importance for container integrity, safety and functionality

Essential part of door safety:

• Failure of the bracket can release or jam the locking bar, compromising door lock and cargo security.
• During sea or rail transport, a poorly secured bar can cause unintended door opening, loss of contents, or endanger personnel.

Consequences of defects:

• Unlocked bar = non‑functional hinge locks = theft or unwanted opening risk.
• Misaligned doors = leaks, water, dust, pest ingress and cargo damage.
• Excessive friction from wear = extra effort for operators, injury risk.

Most common defects, wear and inspection

Typical damage types:

• Bend/ dent: Common during forklift handling or improper handling.
• Crack/break: Result of material fatigue or strong impact.
• Loosening: Vibration during transport can loosen bolts, widening holes and causing further damage.
• Corrosion: Damage to the zinc coating (e.g., scratches) leads to rapid rusting.
• Jamming: Absence or damage of the plastic bush causes the bar to jam in the bracket, preventing door opening.

Symptoms of poor condition:

• Excessive force needed to turn the door handle.
• Audible squeaking, grinding, or cracking.
• Bar is crooked or out of alignment.
• Visible cracks, deformation, rust, or missing parts.

Recommendation:
Preventive inspection of brackets and bushes is part of every periodic container inspection required for CSC label validity.

Maintenance, repair and replacement

Maintenance and replacement procedure:

1. Inspection: Visually check all brackets each time the container is handled; verify smooth movement of the locking bar.
2. Retightening: Tighten any loose bolts to the manufacturer’s recommended torque.
3. Straightening: Slightly bent brackets can be carefully straightened, but replace if damage is significant.
4. Lubrication: If the plastic bush is intact, apply lubricant suitable for plastic/metal.
5. Replacement:
   • Remove the inner bracket and its bolts.
   • Take out the damaged outer bracket and bush.
   • Clean the door surface.
   • Install a new split bush around the bar.
   • Fit the new outer bracket and secure it with new bolts through the door panel and inner bracket.

Caution:
Use only certified parts that meet ISO standards – low‑quality aftermarket components can cause door mechanism failure and void warranties or certifications.

Table – Summary technical data

Conclusion

Bearing Bracket Outer S is a small but absolutely critical element of the door system of shipping containers. It ensures that the locking bar operates reliably even after thousands of cycles, protects the doors from damage, extends the container’s service life and guarantees safety and sealing of the container in the demanding conditions of global logistics.

Regular maintenance, use of high‑quality spare parts and timely replacement of worn brackets are fundamental prerequisites for safe and efficient operation of any shipping container.

Catalog number: HZ000065

Price and shipping

The price is listed per unit, excluding shipping. The item can be sent by freight service or collected in person at our facility in Třebíč, Czech Republic. Shipping cost depends on ordered quantity and destination country. We ship only within Europe.

If you are interested, please send an inquiry including the required quantity via the form below. Always provide a phone number, country, city + ZIP code for delivery so we can calculate the shipping cost. We will send you a complete price offer including transport.

We offer all spare parts for shipping containers. Spare parts are in stock and can be shipped immediately. Larger quantities are available on request.

All information, services, prices, etc., may vary. The price list is indicative; we always charge according to actual conditions.