rigging load cell

A load pin replaces the existing pin in your shackle and measures shear force, while a shackle load cell is a complete shackle assembly with a built-in sensor that measures tension. Load pins are less expensive and fit standard Crosby or Green Pin shackles. Shackle cells are more convenient when you need a dedicated, pre-calibrated lifting point and don’t want to modify your existing gear. Both are equally accurate—around 0.5% to 1% of full scale—so the choice comes down to how you manage your rigging inventory.

Standard units are IP67 rated and handle rain and temporary submersion fine. For continuous underwater use, we offer IP68 versions with double-sealed cable glands and a marine-grade coating. Offshore operators often order them with stainless steel housings and longer pressure-compensated cables. Let us know the depth and duration, and we’ll configure the right protection.

Our load cells come with a few output choices. The simplest is mV/V—that’s the raw strain gauge signal that most crane indicators accept directly. For longer cable runs, we add a signal conditioner that gives you 4-20 mA, which works with almost any PLC analog input. RS-485 digital output is also available if you need to address multiple sensors on a bus. We can provide pinout diagrams and setup notes specific to your equipment.

We recommend a functionality check with a known weight before each critical lift and a full calibration at least once a year. In heavy industrial use or corrosive environments, twice a year is better. If the readings start to drift or the zero point shifts, service it sooner. Our team can recalibrate and re-certify in-house, or guide your own technicians through the process using a hydraulic pull tester or calibrated weights.

Yes. We machine load pins to fit non-standard shackle dimensions and apply your company logo, color, and labeling on shackle cells. For OEMs that supply lifting systems, we can package the sensors with your part numbers and provide wiring harnesses that plug directly into your panels. Minimum order quantities are low—get in touch with your drawings, and we’ll send a quote within a few days.