İşler GrabİŞLER GRABMACHINERY MANUFACTURING, INDUSTRY AND TRADE CO. LTD.
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Single-Rope Mechanical Grab
İŞLER GRAB / GRAB SYSTEMS
Grab Systems

Single-Rope Mechanical Grab

A low-maintenance mechanical locking system for single-drum cranes, actuated when the grab contacts the ground.

Provides reliable loading and unloading on single-rope cranes without requiring an additional power source.

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Operating principle

When the grab contacts the ground, the mechanical latch advances through its sequence; the lifting motion then closes or opens the jaws.

Key features

  • Single-rope operation
  • Mechanical locking system
  • Low operating cost
  • Suitable for harsh environments

Applications

  • Ports
  • Bulk materials
  • Construction sites
  • Industrial plants
Product information

Technical scope and
operational details.

Product capacity and interface values are finalised through engineering calculations based on actual site conditions.

Models and options
Compatible with single-drum cranesGround-contact-actuated mechanical latch
01

Operating cycle

  • Lowering onto the material with the jaws open
  • The sliding block and locking pins move to the closing position upon ground contact
  • Pulling the rope closes the jaws and lifts the load
  • Contact and rope slackening at the discharge point release the latch
02

Main components

  • Suspension eye or beam for crane connection
  • Sliding block and slide assembly that transmit rope movement
  • Mechanical latches and springs
  • Jaws comprising two or more sections
03

Advantages

  • Direct compatibility with single-drum lifting cranes
  • No hydraulic or electrical power required
  • Low failure risk and economical maintenance
  • Suitable for underwater and high-temperature areas
  • Bucket jaw tips and cutting edges are manufactured from wear-resistant HARDOX material.
04

Applications

  • Bulk ship unloading and shipboard cranes
  • River and lakebed cleaning, channel excavation and dredging
  • Deep excavation and shaft work
  • Aggregate stockyards, iron and steel, mining, thermal power and recycling plants

Technical verification: Capacity, pressure, dimensions, material grades and applicable standards are verified for each application during the quotation stage.

CUSTOM ENGINEERING

Dimensions and technical values are defined for your project.

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