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Clamshell Grab

The new standard for clamshell grabs. The most productive grab for a wide variety of your bulk materials. Available at a competitive price point.

Lowest maintenance costs

Lightest clamshell grab

Environment-friendly design

Supported crane types

Mobile Harbour crane

Ship Unloader

Transshipment / Floating crane

Level-Luffing crane

Supported materials

Bauxite

Coal

Iron ore

Aggregates

Cereals

Other

Characteristics

Deadweight efficiency:

Grab ratio: 

Volume: 

Lifting power: 100 tonnes

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01 Features & Specifications
Features & Specifications

How the Clamshell GRAB moves more

For the fastest and most reliable handling of your bulk goods. Explore the features that add up in the long run.

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Maximum performance

The Clamshell Grab is the lightest and most productive clamshell grab bucket on the market. The productivity increase that you can experience with the Clamshell​ is the result of more than 100 years of experience and input we’ve gathered from customers from all over the world. The Clamshell is manufactured using state of the art technology such as Solidworks and FEM & TACTON Product Configurators.

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Competitive pricing

Using the latest engineering innovations, the Clamshell Grab has a modular set-up, resulting in a competitive price while maintaining high-quality. Modular design and manufacturing leads to shorter lead times. This grab type is available for lifting capacities up to and over 85-ton. 

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Reducing OPEX

Operating costs are the largest expense for any grab or equipment. To minimize OPEX, we only  use the most durable materials and reduce the number of parts exposed to wear and tear. At the same time, the Clamshell Grab is designed for easy access, making maintenance faster and simpler. This approach helps provide a safer working environment while keeping maintenance costs per tonne transferred as low as possible.

Additional features & specifications

Other characteristics of our Clamshell Grab

Some of the key qualities are:

  • 100% symmetrical closing
  • Reduction of stress in grab construction
  • Short delivery times and enhanced ease of maintenance
  • Equalizer is supported by double row cylindrical bearings
  • Round support beam reducing spillage of cargo
  • Very open design, no risk of material blocking the pulleys
Quality Assurance

Built to perform
Proven before it ships

Engineered. Tested. Documented. Every grab is verified against documented standards before it leaves our workshop. From simulation and material selection to final inspection, performance is validated before it reaches your terminal.

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Designed for heavy duty, verified in simulation

Before production begins, geometry, load paths, and structural behavior are analyzed using Finite Element Analysis (FEA). Critical wear zones are reinforced and material choices are validated to ensure durability in demanding bulk applications.

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Everything quality build – all the way from plate to paint

From CNC-cut plates to qualified welding and final assembly, each grab is produced under documented procedures. Material traceability and in-process checks ensure consistent build quality at every stage.

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Inspected and documented before it ships

Every grab undergoes a structured 60-point inspection during manufacturing and final acceptance testing. Dimensions, weld quality, and functional performance are verified and recorded before shipment.

More on Quality Assurance

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Request a quote tailored to your operation and performance requirements.
Success stories

Optimized performance

Discover how terminals and transshipment crews use our grabs to get shorter cycles, cleaner hatches, and fewer unplanned stops.

SMT Shipping
Social post SMT 5
Marc Smeets

SMT Shipping

"Our handling speed increased from 1,000 to 1,250 tons per hour. The NemaX paid for itself more than four times in its first year. "

VLI Pecém
vli pecem nemax grab 05
Paulo Ribeiro

VLI Pecém

"We now unload a ship in four days instead of five. Savings in demurrage costs are considerable, to say the least."

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Service & Maintenance

Keep your operation on schedule.

Planned inspections, clear maintenance guidance, and fast technical support help you avoid unplanned downtime. From commissioning to long-term operation, Nemag supports the performance of your grab throughout its entire lifecycle.

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LIFECYCLE SUPPORT FROM DAY ONE

A grab is a complex piece of equipment that cannot simply be sent back to the factory when questions arise. That is why Nemag supports customers on-site and remotely with practical guidance, troubleshooting, and operator training.

From start-up and commissioning to performance optimization and wear assessment, our engineers help ensure your grab operates as intended in real-world conditions.

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Service & maintenance

From commissioning to years of operation, we support our customers throughout the full lifecycle of the grab. Our service teams provide technical assistance, inspections, and guidance whenever needed, helping operators keep performance predictable over time.

Service & maintenance
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Spare parts availability

All spare parts remain available throughout the entire lifetime of the grab. This ensures repairs, replacements, and upgrades can be carried out without uncertainty, even many years after delivery.

Spare parts availability
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Documentation & guidance

Each grab is delivered with comprehensive manuals, inspection guidelines, and welding instructions. Combined with the manufacturing data book, this documentation provides full transparency and supports safe operation, maintenance, and repairs.

Documentation & guidance

Grab selection can be hard

Selecting the right grab and ensuring you got all the information for your team can be a challenge. Most common questions are listed below, still need help then contact us.
Safety and compliance accountability for Nemag equipment?

Our grabs are designed to help reduce risk through engineering details (e.g., accessible harness points, smooth/flush contours), and are validated with documented processes (e.g., 60-point inspections, International Organization for Standardization (ISO) 9001 certificates, Finite Element Analysis (FEA) summaries, proof-load testing).

Safe operation always depends on trained personnel, correct procedures, and the crane/terminal’s own safety policies.

Maintenance and lead time on spare parts?

Planned inspections at regular cycle intervals (e.g., basic checks around 10 000 cycles; deeper inspections around 100 000 cycles) are recommended by Nemag.

Wear parts and kits are available and can be delivered with your purchase.

Typical dispatch target for stocked parts is under 48 hours to keep downtime low.

Grabs and more

Explore other grabs and connection systems for bulk handling productivity.

2

NemaX Grab

Wider opening, more payload.

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Handle difficult materials.

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Rope termination made easy.

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Quick Release Link

Reliability & safe changing.

Quick Release Link
Contact us

A Partner You Can Count On

As a family business we take pride in thinking on the long run and be the partner you can rely on. If you have any questions, please reach out. Our team is here to support you.

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We're here to help you make the right choice for your operation.

Martine Dekker - Grootveld,
Account manager

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