Spare part for the shipping container door No. 6 – Split Small Bush
Czech Republic 
WITHOUT SHIPPING Split Small Bush for shipping container
What is a Split Small Bush? Basic definition and significance
Split Small Bush is an important spare part in the locking mechanism of shipping container doors, especially ISO containers. It is a small, longitudinally split cylindrical bushing that serves as a sliding bearing for the vertical lock rod at the point where it passes through a smaller bearing bracket.
Main functions of the Split Small Bush:
- Reduces friction between the steel lock rod and the metal door bracket.
- Prevents wear of metal parts, extending their service life.
- Isolates metal‑on‑metal contact, minimizing corrosion and noise.
- Allows smooth door operation even under high load and extreme transport conditions.
- Split design enables quick replacement without removing the entire lock rod.
The Split Small Bush is therefore a key component for the functionality, safety, and long‑term durability of container doors.
Detailed technical analysis of the Split Small Bush
Structure, material and design
| Property | Detailed description |
|---|---|
| Shape | Cylindrical two‑piece bushing, made of two identical half‑cylinders that join into a single unit. |
| Material | Nylon (technical plastic with high durability), sometimes PA6 or PA66, often black for UV stability. |
| Self‑lubricating properties | Minimizes friction without additional lubrication. |
| Durability | High resistance to weather, UV radiation, salt, moisture, and both low and high temperatures. |
| Vibration damping | Plastic dampens shocks and impacts generated during handling and transport. |
| Corrosion protection | Separates metal parts, preventing galvanic corrosion and extending the door system’s life. |
| Dimensions | Typically: inner diameter about 24–25 mm, outer diameter about 35 mm, length about 56 mm (varies by manufacturer and container type). |
Typical dimensions (source: Seabox Depot):
- Inner diameter: 15/16″ (24.6 mm)
- Outer diameter: 1‑3/8″ (35 mm)
- Length: 2‑3/16″ (56 mm)
- Weight: approx. 0.05 lb (0.023 kg)
These dimensions are optimized for compatibility with standardized ISO container bearing brackets.
Location and function in the container door mechanism
Diagram of a shipping container door (description):
- Each door usually has two vertical lock rods.
- The rods are held by several bearing brackets.
| Bracket type | Position on door | Bushing in bracket |
|---|---|---|
| Large inner bracket | Near the centre of the door | Split Large Bush |
| Small outer bracket | Near the frame/hinges | Split Small Bush |
The Split Small Bush is always located in the small outer bearing bracket. When the lock rod is turned (e.g., by a handle), the bushing allows the rod to move smoothly without grinding while keeping it precisely positioned.
Mechanical function:
- Friction reduction: Enables easy, fluid rotation of the lock rod.
- Elimination of play: Secures the rod’s position, preventing wobble.
- Protection of metal parts: Prevents premature wear and extends the service life of the door mechanism.
- Noise minimization: The plastic bushing reduces noise during door movement.
Significance of the split design
- Easy replacement: Can be swapped without dismantling the lock rod, essential for field maintenance at ports or construction sites.
- Time and cost savings: Replacement takes only minutes; no welding, cutting, or heavy‑part disassembly required.
- Reduced downtime: Fast service means fewer interruptions in logistics or mobile building operations (e.g., storage units, offices, housing modules).
Wider context: Split Small Bush in modern container applications
Although it is a tiny component, its reliability is critical for all container‑related applications—from routine transport to innovative architectural conversions.
Application overview:
| Application | Importance of Split Small Bush |
|---|---|
| Container apartments and offices | Ensures smooth, quiet, and safe opening even after years of intensive use. |
| Container solutions for homelessness | Crucial for comfort, security, and long‑term functionality of housing modules. |
| Technical containers (generators, chemical storage) | Reliable door operation is key for safety and protection of equipment or hazardous materials. |
| Commercial and public spaces | High‑frequency use (e.g., checkout counters, shops, workshops) demands long‑lasting components. |
Practical examples:
- Housing containers, stacked cabins, office containers: Smooth, silent door operation reflects overall quality of the building.
- Chemical store shipping container: Seal integrity and reliable locking are essential to meet safety regulations.
- Shipping container museum workshop: Every detail of door hardware matters when protecting valuable exhibits.
Maintenance, inspection and replacement of the Split Small Bush
Signs of wear:
- Difficult rod rotation: Requires excessive force; doors grind.
- Visible damage: Cracks, deformation, broken plastic.
- Play in the bracket: Rod moves noticeably, rattles.
Recommended replacement procedure:
- Loosen the bearing bracket (usually with a screwdriver or wrench).
- Remove the old split bushing – the two halves come out easily.
- Inspect the rod and bracket, clean if necessary.
- Insert the new Split Small Bush halves, ensuring they sit precisely in the bracket.
- Secure the bracket and test the smoothness of operation.
- Optionally apply suitable lubricant (generally not needed due to nylon’s properties).
Replacement intervals:
- Standard transport: Inspect at each major container maintenance, at least once a year.
- Intensive operation (construction sites, retail): Inspect every 3–6 months.
Timely replacement of this inexpensive part prevents costly repairs such as replacing the entire lock rod or door frame.
Extended technical information
Material specifications
- Typical material: PA6, PA66 (nylon) with UV stabilizer, outdoor‑grade blend.
- Tensile strength: minimum 70 MPa.
- Temperature range: –40 °C to +80 °C (short‑term and prolonged).
- Chemical resistance: Resistant to oils, greases, weak acids, salts.
- Color: Black (for UV protection; sometimes gray or blue for special applications).
Compatibility
- ISO containers 10′, 20′, 40′, 45′
- Special containers (e.g., chemical storage, electrical cabinets, generator containers)
- Suitable for most doors with vertical lock rods and bearing brackets.
Advantages of split bushings over conventional (non‑split) ones
| Conventional (non‑split) bushings | Split Small Bush (split) |
|---|---|
| Require lock‑rod disassembly | Quick replacement without disassembly |
| Higher time consumption | Saves time and labor |
| Greater risk of damage | Minimizes risk during service |
| Limited field availability | Easy service anywhere (port, construction site) |
Standards and regulations
- ISO 6346 – container identification standard (not specific to the Split Small Bush but relevant to containers).
- EN 12079 – European standard for container components.
- Manufacturers usually state compliance with ISO dimensions; the Split Small Bush is designed to fit standardized bearing brackets per ISO/EN specifications.
Related terms and glossary
| Term | Explanation |
|---|---|
| Shipping container | Steel transport unit for intermodal freight movement (ISO standard). |
| Door gear | Complete locking mechanism of a container door, including rods, handles, pins, and bearing brackets. |
| Bearing bracket | Steel bracket on the door through which the lock rod passes; fitted with a plastic bushing. |
| Lock rod | Vertical steel rod used to lock the door; moved by the handle. |
| Container conversion | Modification of a container for another purpose (housing, shop, workshop, storage, etc.). |
| Split Large Bush | Larger variant of the split bushing, used in the inner bearing bracket. |
Conclusion
The Split Small Bush is a classic “small hero” in the world of shipping containers. Though it costs only a few dozen crowns, its proper function often determines the overall service life, safety, and utility of the container—whether for maritime transport, emergency housing, chemical storage, or modern container architecture.
A quality split bushing extends the door mechanism’s lifespan, reduces maintenance costs, and contributes to the safety and reliability of the entire container solution.
Catalog number: HZ000067
Price and shipping
The price is listed per single unit, excluding transport. Shipping can be arranged via a carrier or collected in person at our facility in Třebíč, Czech Republic. Shipping cost depends on order quantity and destination country. We ship only within Europe.
If interested, please send an inquiry including the desired quantity, phone number, country, city, and ZIP code so we can calculate the shipping cost. We will then provide a complete price quote including transport.
We offer all spare parts for shipping containers. Parts are in stock and can be dispatched immediately. Larger quantities are available on request.
All information, services, and prices may vary. The price list is indicative; we always charge based on actual conditions.
Czech Republic 
Send inquiry
Shipping container colors
RAL 1001 RAL 1003 RAL 1014 RAL 1015 RAL 1018 RAL 1023 RAL 2001 RAL 2008 RAL 2011 RAL 3000 RAL 3001 RAL 3002 RAL 3009 RAL 3013 RAL 3020 RAL 4008 RAL 5003 RAL 5005 RAL 5010 RAL 5011 RAL 5013 RAL 5017 RAL 6005 RAL 6007 RAL 6018 RAL 6029 RAL 6031 RAL 6038 RAL 7000 RAL 7004 RAL 7005 RAL 7012 RAL 7015 RAL 7016 RAL 7021 RAL 7024 RAL 7031 RAL 7032 RAL 7035 RAL 7036 RAL 7037 RAL 7038 RAL 7040 RAL 7042 RAL 8004 RAL 8008 RAL 9003 RAL 9004 RAL 9005 RAL 9010 RAL 9016 CAMOUFLAGEQUESTIONS & ANSWERS TO THE MOST FREQUENTLY ASKED QUESTIONS:
We always guarantee the size, quality, and specific type of container including the pickup location of your choice.
Why is it not possible to access the depot to inspect the container? And for what reason is it not possible to take photos of the container from the depot?
How does the self-pickup of a container from the depot work?
What if the container we came to pick up at the depot does not match the condition and quality we ordered?
Afraid of being scammed and not receiving the container? Many questions are answered in our article container purchase scams.
You can find out how to arrange for the unloading of a shipping container here.
The information in the text may differ from the exact specification of a particular container, the image, price and description of the container are for guidance only, the specification of the container will therefore be specified by e-mail or telephone before the conclusion of the contract. The text provided on this page is therefore not a proposal to conclude a contract.
