Product Overview

This is a rope weighing load cell — also sold as a crane scale load cell or force sensor — supplied with its cable for cranes that weigh the load at the rope rather than at the boom. Fitted at the weighing point in the rope run, it turns the force in the rope into an electrical signal that travels back to the indicator or load moment limiter in the cab, so the operator works from the load the machine is actually carrying and the limiter can act on that figure.

Inside, the sensing element uses MEMS and Hall technology, and the amplifier is built into the body instead of being mounted separately on the machine. That is what keeps output accuracy steady across the working range, and it removes a junction box and a second enclosure from the installation.

The body is a flat metal plate with a defined mounting face, a small recessed disc at the centre and a side terminal where the black cable leaves the unit. Two large apertures in the plate take the fixings, and the cable is routed through the body so it stays clear of the rope run.

Because the sensor has to agree with the display reading it, this load cell is supplied in more than one output version and is confirmed against your machine before it ships. Tell us the crane model and the indicator it feeds and we will say which version to order — or what to change if the original number is no longer made.

The same body is listed among our crawler crane parts and supplied for mobile cranes that weigh load at the rope, so a fleet running both types can keep one replacement ready.

On a heavy equipment parts list this is a small line, but it is the input the whole load monitoring chain depends on: a sensor that is mismatched, mis-mounted or drifting makes every reading on the display wrong with it.

Within our crane parts supplier range, this sensor sits alongside the monitors, controllers, limiters, displays and cables that make up a complete load monitoring system, so the sensor and everything it connects to can come from one place.

Key Features

• Built-in digital amplifier: the signal is amplified inside the load cell, so it reaches the indicator without a separate amplifier box mounted on the machine.
• MEMS and Hall sensing elements: output accuracy is held across the working range instead of falling away as the machine works through a shift.
• Safety level up to PLd: the sensor can sit inside a load circuit built to performance level d, which is the level most crane safety functions are designed around.
• Easy to mark and calibrate: zeroing and calibration are quick operations, which matters when the machine is needed back on site the same day.
• Complete assembly: body, cable and connector arrive as one unit, so there is no separate wiring to make up on the bench before fitting.
• Like-for-like replacement: the unit is built to take the place of the crane spare parts already in service, at the same mounting point and along the same cable route, so the job is a swap rather than a rework.

Specifications

Installation & Commissioning

1. Before you remove the old unit, note its part marking and cable route, and confirm which crane parts it feeds — the limiter, the display or both.
2. Mount the new body on the same face, using the fixing holes in the plate. Keep the cable exit clear of the rope run, the sheaves and any edge that could chafe it.
3. Route the cable back along the original path, away from high-current cables and hot surfaces. On construction machinery spare parts of this size, most faults traced back to the sensor turn out to be cable faults, so the route is worth the extra ten minutes.
4. Connect the cable to the indicator or limiter and check that the reading moves in the right direction when load is applied.
5. Zero the channel, calibrate it using the machine's own procedure, and mark the sensor with the calibration date.
6. Test against a known load before the crane goes back to work, and record the reading in the machine's service log.

Where It Is Used

• Crawler cranes with a rope weighing system: the sensor reads the load taken at the rope and feeds the limiter, so the operator works from a measured figure rather than an estimate. This is the most common way our crawler crane parts are used in a load monitoring channel.
• Mobile and truck cranes: the same unit is supplied where load is weighed at the rope rather than at the boom, including hire fleets that move the machine between sites.
• Rotary drilling rigs: load monitoring on the winch line of SANY rigs and similar machines, keeping the operator inside the rig's rated capacity.
• Heavy equipment parts across a mixed fleet: cranes in ports, mining and steel plants stay in service for decades, so a replacement that matches the original output and mounting lets the machine keep its existing display and limiter.
• After an overload event: re-checking the weighing channel is a common step before a crane is released back to work, and the sensor is the easiest part of that channel to verify.

Confirming Fitment

1. Send us the machine make and model, plus the serial number of the crane or rig.
2. Photograph the old sensor in place and its part marking, then the connector and the display or limiter it feeds.
3. Tell us which output your indicator expects if you know it, or send the marking from the display and we will look it up against the machine.
4. Our engineers check the mounting, the output and the connector against your machine and confirm the correct version.
5. If the original number is no longer available we say so straight away and offer what we can supply in its place — a common situation with construction machinery spare parts for older cranes.
6. On legacy machines we also confirm whether the existing display can read a modern sensor or whether the display should change with it. Retrofitting an older weighing channel is routine work for us: a revised sensor for a harsh environment, an upgraded display with a real-time data interface, or a complete replacement of sensor, cable and limiter together.
7. If you are ordering crane spare parts for a fleet rather than a single machine, send the list. We work through it machine by machine so the right versions are identified before anything is ordered.

Ordering & Delivery

After-Sales & Support

Support does not stop when the sensor ships. If the display reads oddly after fitting, our engineers will work through it with you — on-site help with installation, calibration and troubleshooting where that makes sense, or remote diagnostics if you would rather send error codes and readings by email or WhatsApp and do the work yourself. If any of the crane parts we supplied fails within the warranty period, return it for assessment and we will repair or replace it; repair turnaround is generally 5–10 business days once the part reaches us.

We supply heavy equipment parts for machines that stay in service for decades, which means the useful question is rarely only the part number — it is what will actually fit and keep working on this machine.

As a crane parts supplier, we would rather tell you that a number is unavailable than ship something that will not fit, and we will always explain the route we recommend and why: a like-for-like unit, a different connector, or a sensor and display change together.

Discontinued & Hard-to-Find Parts

When a machine is out of production but still working, the part number matters more than ever. If the number you have is discontinued or hard to trace, send us the machine model together with that number: we search our supplier network, confirm what is genuinely available, and give you a straight answer before you commit. Where the original is no longer made, we set out the alternatives we can actually supply, or an upgrade path, and coordinate samples, inspection and made-to-order work with the suppliers we buy from. Sourcing, consolidation and export handling stay with us.

FAQ