HLC-SB Series
Double-Ended Shear Beam Load Cell
Double-ended shear beam load cell with ball arrangement, IP68-rated, alloy steel construction — the standard weighbridge load cell format.
- Capacity range
- 10–50 T
- Category
- Load Cells
- Technical details
- Available below
Manufacturing
Built, installed & supported by HMT
Compliance support
Calibration & Legal Metrology guidance
System ready
Automation, ticketing & ERP integration
01Overview
Shear beam load cells are the most common format for modular weighbridge decks — mounted at each module joint, they measure the shear force through the beam rather than pure compression, which suits the distributed loading of a road vehicle crossing the deck.
02How it works
Shear strain, not axial compression
Where a compression load cell measures the shortening of its body under a direct axial load, a shear beam load cell measures the shear strain that develops through a beam's cross-section when a load is applied off to one side of its supports — strain gauges are bonded at roughly 45 degrees to the beam's axis, the orientation that best captures shear deformation rather than simple compression or bending. That's a genuinely different physical principle, suited to a different kind of mechanical loading situation.
Why that suits a modular deck specifically
At a modular weighbridge's module joint, the load cell isn't sitting under a perfectly centred, purely vertical load the way a floor scale's corner load cell typically is — traffic crossing the deck at an angle, and the module joint geometry itself, introduces some lateral and off-axis loading component. A shear beam cell, measuring shear strain through the beam rather than relying on perfectly axial compression, tolerates that kind of loading condition better than a compression cell would in the same position.
Double-ended, ball-and-socket mounting is what makes it self-aligning
The double-ended design with ball-and-socket mounting at each end lets the cell rotate slightly at its mounting points as the deck structure moves — from thermal expansion, from the flex of traffic crossing it, from minor settling — without that movement binding against the cell or forcing a misaligned load path into the sensing element. It's this self-aligning mechanical arrangement, as much as the shear-sensing principle itself, that makes shear beam cells the standard choice for a modular deck.
03Manufacturing & build quality
The beam is precision-machined from alloy steel to a geometry engineered for shear-strain sensitivity at the target capacity, with strain gauges bonded at the 45-degree orientation that best captures shear deformation, under the same controlled, contamination-free bonding conditions any precision load cell requires. The ball-and-socket end fittings are machined to fine tolerance, since the self-aligning function depends on those joints moving smoothly and predictably under load rather than binding or wearing unevenly. The assembly is hermetically sealed to IP68 rating to protect the strain gauges and bonding from moisture in outdoor weighbridge service, then temperature-compensated and calibrated against certified reference weights across its rated capacity before being marked and released.
04Problems it solves
Point-loading errors from off-axis traffic loading
A compression cell poorly suited to off-axis loading can misread under the kind of angled or uneven traffic loading a modular deck's module joints actually experience — shear beam sensing is specifically better matched to that loading condition.
Deck binding from thermal expansion
A rigidly mounted load cell resists the deck's natural thermal expansion and contraction, introducing mechanical stress and potential reading error — the ball-and-socket self-aligning mount is designed to let that movement happen without binding.
Moisture-related failure at exposed module joints
Module joints sit directly exposed to weather at a weighbridge's most vulnerable structural points — IP68 sealing protects the load cell's sensing element from that ongoing moisture exposure.
Uneven load-sharing across modules
Where mounting geometry or minor structural variance between modules would otherwise cause uneven load distribution, the self-aligning mount and, in combination with junction box trimming, the shear beam cell's tolerance for off-axis loading both help keep load-sharing consistent across the deck.
05Why it matters
Modular weighbridges depend on every load cell at every module joint reading consistently and accurately, transaction after transaction, in an outdoor environment that's constantly moving the structure slightly through thermal cycling and traffic flex — a load cell not engineered for that specific mechanical reality is a weak point that eventually shows up as reading inconsistency, structural stress, or a failed cell. Shear beam load cells with self-aligning ball-and-socket mounting exist because that's what a modular deck actually needs, not because it's simply a more precise sensor in the abstract — and getting this component choice right is what keeps a modular weighbridge's trade readings defensible over years of real-world service.
06Salient features
- Double-ended shear beam design with ball-and-socket mounting
- IP68-rated, alloy steel construction
- Standard format for modular weighbridge decks
07Specifications
| Model | Capacity (T) | Least Count | Platform Size (m) | Notes |
|---|---|---|---|---|
| HLC-SB-10 | 10 | — | — | — |
| HLC-SB-20 | 20 | — | — | — |
| HLC-SB-30 | 30 | — | — | — |
| HLC-SB-40 | 40 | — | — | — |
| HLC-SB-50 | 50 | — | — | — |
08Technical file
Need the full technical sheet?
Request drawings, model-specific details and project documentation from the HMT team. A downloadable product file will appear here once approved.
09Complete system
Plan beyond the deck.
A vehicle weighing point can combine the weighbridge with indicator, load cells, traffic management and H-Weigh software for an accountable end-to-end workflow.
08In the field
09Frequently asked
How does a shear beam cell differ from a compression cell in practice?
Shear beam cells measure shear strain through a beam and mount via a self-aligning ball-and-socket joint, suited to modular weighbridge module joints under distributed, sometimes off-axis traffic loading; compression cells measure axial compression and suit platform scales and decks with more directly centred vertical loading.
What capacity per beam do we need versus total bridge capacity?
Total bridge capacity is shared across all the shear beam cells at the various module joints, so per-cell capacity is sized to the maximum load any individual joint will see, not the bridge's total rated capacity — your weighbridge design will specify the correct per-cell rating.
Does the ball-and-socket mounting need regular maintenance?
It's designed for long, low-maintenance service, but periodic inspection for wear or corrosion at the mounting joints is worth including in the same schedule as the rest of the weighbridge's periodic checks.
What sealing rating does it carry for outdoor exposure?
IP68-rated, protecting the strain gauges and internal bonding from moisture ingress in continuous outdoor weighbridge service.
Is it compatible with our existing modular weighbridge deck?
Shear beam cells with double-ended, ball-and-socket mounting are the standard format for modular weighbridge decks generally, but confirm capacity rating and physical mounting dimensions against your specific deck's module joint design before ordering a replacement or additional cell.
10Industries this serves
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