Load Cell Buying Guide: How to Choose a 50k Load Cell (100 lb to 500,000 lb)
This load cell buying guide shows how to choose a load cell from 100 lb to 500,000 lb by how it is loaded, its capacity and its mounting, including the right 50k load cell. For single loads near 50,000 lb, the 100,000 lb MNM Scales IDS-672 pancake load cell is $698.00, in stock.
Short answer: choose a load cell by how it is loaded (compression, tension or both), how much load each cell carries (with headroom for shock and uneven loading), the mounting style your structure needs, and whether the system must be NTEP legal for trade. Looking for a 50k load cell? Our 50,000 x 2 lb compression scale (one of our compression scales) pairs the IDS-672-50K-CT low-profile load cell with a portable display, and our 200,000 lb tank scale uses four LPD-50k load cells. For single loads near 50,000 lb, the 100,000 lb IDS-672 pancake load cell gives you generous headroom.
A load cell is the sensor inside almost every electronic scale and force-measurement system. Load on the cell creates a tiny electrical signal (measured in millivolts per volt of excitation, mV/V) that an indicator converts into a weight or force reading. MNM Scales is one of the largest scale distributors in the country, with over 30 years in business and a load cell lineup that runs from 100 N USB button cells to 500,000 lb pancake cells. Here is how to choose the right one, or browse all load cells. Ready to order? See our load cells for sale, quoted by phone at (832) 290-3120.
Step 1: Choose the load cell type
| Type | How it is loaded | Typical uses | Examples we stock |
|---|---|---|---|
| Pancake / low-profile disk (LPD) | Compression (IDS-672 models: tension and compression) | Heavy force testing, presses, tank and hopper legs, compression scales | IDS-672 1K, 10K, 25K, 100K, CP-1-500K (500,000 lb) |
| S-type | Tension and compression | Hanging tanks, hoppers, crane and winch lines, test rigs | MS-1-3K 3,000 lb, Rice Lake 2.5K NTEP, Zemic 10,000 lb stainless NTEP, Zemic 20,000 lb NTEP, OP-312-10K NTEP |
| Tension (small S-type) | Tension | Hanging hoppers, filling and batching systems | MS-1 100 lb NTEP, MS-1 250 lb NTEP |
| Shear beam | Compression, one end fixed | Floor scales, platform scales, tank and silo legs | Zemic B8D 2,500 lb stainless, GX-1-20K 20,000 lb large envelope with foot |
| Single point | Compression, off-center loads on one cell | Bench and platform scales, checkweighers | LC-4204-K300 300 kg, A&D LCB05K060 60 kg hermetically sealed |
| Tool-steel tension/compression | Tension and compression | Multi-point weighing and force systems | A&D LC1205-T005 5 ton |
| Compression force sensor | Compression | Test stands, fixtures, force measurement | A&D CP-1 10 kN |
| USB button load cell | Compression force | Small force measurement straight to a PC | A&D LCCU21N100 100 N (built-in A/D converter and USB interface) |
Step 2: Size it: how to choose a 50k load cell (or any capacity)
Add up the heaviest total load the system will see: the live load (product, part or force) plus the dead load (tank, hopper, platform, fixture). Divide by the number of load cells that share it. Then add headroom, because loads are rarely shared perfectly and shock loads, wind, agitators and impacts spike the force on a cell. Many system designers leave 25% to 50% headroom above the calculated load per cell.
| Example | Calculation | Good choice |
|---|---|---|
| Single press or test fixture, up to 40,000 lb | 40,000 lb / 1 cell = 40,000 lb, plus headroom | A 50k load cell, or the 100K pancake for extra margin |
| Single load near 50,000 lb | 50,000 lb / 1 cell, plus headroom | 100,000 lb IDS-672 pancake |
| Tank on 4 legs, 150,000 lb full | 150,000 lb / 4 = 37,500 lb per cell | Four 50k load cells, as in our 200,000 lb tank scale |
| Platform on 4 legs, 60,000 lb | 60,000 lb / 4 = 15,000 lb per cell | Four 20,000 lb shear beams or 25K pancakes |
Going much larger than needed has a cost too: a cell loaded to only a small share of its capacity uses less of its signal range, so resolution suffers. Aim for a cell that runs comfortably below its rating at your maximum load.
100,000 lb load cells for aerospace and heavy industry
Our IDS-672-100klb-C3 pancake load cell (100,000 lb, low-profile disk, supplied with a certificate) is one of our most popular heavy-capacity sensors. Aerospace customers, test labs and manufacturers buy it for heavy compression and force applications, and it also fits platform and floor-scale repair and tank and hopper weighing. For a complete system, the 100,000 x 5 lb compression scale and the 100,000 x 1 lb compression scale with four 25K load cells and indicator are ready to use. Need a complete hanging scale rather than a bare load cell? See our crane scale buying guide. For truly massive forces, the CP-1-500K handles 500,000 lb.
Step 3: Match the electronics
- Indicator: the indicator supplies the excitation voltage and reads the mV/V signal. Check how many load cells it can drive. For example, the indicator on our 10,000 lb S-type load cell scale drives up to four 350 Ω load cells. Browse scale indicators, and see our LP7515 indicator calibration guide for how a load cell system is calibrated.
- Multiple cells: systems with two or more load cells are wired through a junction box (not included with the load cells) so the indicator sees one combined signal, and the corners are trimmed so the reading is the same wherever the load sits (see how to calibrate a floor scale).
- Cable: check the cable length you need from the cell to the indicator or junction box. The GX-1-20K comes with a 20 ft (6 m) cable and the LC-4204-K300 with a 5 m cable, for example.
- Wiring: confirm the connector, pinout and wire colors against your indicator before installation.
Step 4: Environment and mounting
- Material: alloy steel is strong and economical for dry industrial use; stainless steel and hermetically sealed cells suit washdown, food, chemical and outdoor service.
- Mounting hardware: S-type cells mount with rod-end or eye bolts (for example, our pair of 3/4-16 eye bolts for 5K to 10K S-type load cells, sold separately). Shear beams use a loading foot or mount; the GX-1-20K listing includes a foot and spacer.
- Load direction: load the cell straight along its axis. Side loads, twisting and off-center loads (except on single-point cells, which are designed for them) reduce accuracy and can damage a cell.
- Overload: know the safe overload rating. The LC-4204-K300, for example, is rated for safe overload up to 200% of capacity.
Step 5: Legal for trade (NTEP) or general purpose?
If the system will be used to buy or sell by weight, it needs NTEP certified components and must be placed in service under your state rules. Our NTEP load cells include the MS-1 100 lb and 250 lb tension cells, the Rice Lake 2.5K S-type, the Zemic 10,000 lb stainless and 20,000 lb alloy S-types, and the OP-312-10K. For force testing, process control and OEM equipment, general-purpose load cells are the usual choice. Learn more in our NTEP guide.
Need help choosing?
Tell us the load, the number of support points, how the load is applied and the environment, and we will recommend the right load cell, indicator and hardware. MNM Scales is TDA licensed with registered technicians, and we calibrate load cell systems, compression scales and tank scales. See our services. Not sure whether you need a bare load cell, a compression scale or a force gauge? See compression scale vs force gauge vs load cell.
Popular load cells: All load cells 100,000 lb pancake 50,000 lb compression scale MS-1-3K S-type 20,000 lb shear beam
Frequently asked questions
What is a 50k load cell?
A 50k load cell is rated for 50,000 lb. It is usually a pancake or low-profile disk compression cell used in presses, test fixtures, tank legs and heavy compression scales. Our 50,000 x 2 lb compression scale uses the IDS-672-50K-CT low-profile cell with a portable display, and our 200,000 lb tank scale uses four LPD-50k cells.
What capacity load cell do I need?
Add the live load and dead load, divide by the number of load cells sharing it, then add headroom for uneven loading and shock. Many designers leave 25% to 50% headroom above the calculated load per cell.
What is the difference between an S-type and a pancake load cell?
An S-type cell is shaped like an S and measures tension and compression, so it is popular for hanging tanks, hoppers and crane lines. A pancake or low-profile disk cell is a short, round cell built for high compression loads, from a few thousand pounds up to 500,000 lb.
Do your load cells come with a certificate?
Our IDS-672 pancake load cells, including the 1K, 10K, 25K and 100K models, are listed with a certificate. We also calibrate complete load cell systems and compression scales.
Which load cells are NTEP legal for trade?
We stock NTEP S-type and tension load cells including the MS-1 100 lb and 250 lb, Rice Lake 2.5K, Zemic 10,000 lb stainless and 20,000 lb alloy, and Optima OP-312-10K. The complete system must also be placed in service under your state rules.
Can one indicator run several load cells?
Yes. Most indicators can excite several load cells wired through a junction box. For example, the indicator on our 10,000 lb S-type load cell scale drives up to four 350 ohm load cells.