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Chain Blocks Suppliers
A chain block, also called a manual chain hoist or hand chain hoist, is the tool crews use when a crane is too big, too far away, or simply not available. On board, it turns steady hand pull into slow, controlled lifting so pumps, motors and valves can be raised off their foundations, swung into position and lowered again without shocks. In shipyards and workshops, the same hoist hangs from a beam or trolley to move heavy parts along a bay or support pipe spools during fit-up.
Because it needs no power supply, a chain block is often the only realistic choice in confined spaces, inside tanks or near hazardous areas where electrical equipment is limited. Compact bodies, protected brakes and corrosion-resistant chain help the hoist survive in damp, salty environments, while overload devices and modern brake designs give crews predictable load control even during precise lifts.
Choosing Chain Blocks for Marine Lifts on Records Marine
Buyers look for chain blocks suppliers who can deliver hoists that are compact, easy to handle and properly documented. When you choose a model for a specific job on board, it helps to keep a few key points in mind:
Safe Working Load
The Safe Working Load (SWL) / Working Load Limit (WLL) on the nameplate assumes:
- straight, vertical lifting
- the chain block used in a configuration tested and certified by the OEM (typically hook-suspended, or mounted on a matched trolley)
For marine use:
- Check whether the unit is approved for any angled lifting (fleeting / drifting). Chain blocks are tested for safe operation at angles from the vertical and proof-tested to 1.5 × rated capacity.
- Make sure the SWL covers the entire lifting system: slings, shackles, beam clamps and the supporting structure, not only the hoist.
Headroom and physical fit
Chain blocks are often installed in tight spaces: under low beams, between decks, or close to overhead piping.
Important checks:
- Headroom (distance from top hook to bottom hook when fully raised). Low-headroom designs and compact bodies are often highlighted by OEMs for workshop and plant use, and the same benefit applies in machinery spaces.
- Whether the block can be combined with a plain or geared trolley without adding too much extra height. Many catalogues show combination units (block + trolley) specifically to keep headroom as low as possible.
- Clearance for the hand chain so the operator is not forced into awkward or unsafe positions.
Corrosion and environment
A standard industrial hoist may not last long if it is constantly exposed to salt air, humidity and dirt.
For shipboard and offshore use, look for:
- Protected brake chambers and sealed housings, so salt and dust do not attack the brake surfaces.
- Corrosion-resistant load chain and hooks - stainless or specially coated parts on blocks marketed for marine / offshore service.
- Published temperature range, especially for vessels trading in Arctic or very hot climates; some blocks are qualified for -40 °C to +80 °C operation.
This is not only about durability: a contaminated or corroded brake can affect holding performance.
Overload protection and brake design
Modern chain blocks often go beyond a basic mechanical brake:
- Many premium units offer a slipping clutch overload device. When the load exceeds the limit, the clutch slips and prevents further lifting while still allowing controlled lowering.
- Look for information on the brake system itself - enclosed, corrosion-protected, and tested to relevant hoist standards. Good datasheets explain how the brake behaves when you stop pulling and how it is protected from contamination.
Onboard, this translates into fewer risks of hidden damage from overloading and more predictable behavior during precise lifts.
Hoist chain standard and documentation
The performance of a chain block depends heavily on the load chain running inside it.
For marine work, pay attention to:
- Compliance with EN 13157 for hand-powered lifting equipment, which explicitly includes hand chain blocks and sets safety and marking requirements.
- Use of hoist chain manufactured to EN 818-7 - the European standard for fine-tolerance hoist chain Grade T used in manual and powered chain hoists.
- Availability of test certificates, serial numbers, batch numbers and traceability for both the complete hoist and the hoist chain itself.
For shipowners and managers, this documentation makes it much easier to build and maintain the lifting-gear register that class and flag inspectors now expect.
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Year Founded: 2019
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Year Founded: 2021
Year Founded: 1987
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