SZ-SC01 Spider Crane LMI

Product Overview
The SeeZol Spider Crane Load Indicator, also called Spider Crane load moment indicator (LMI) or Spider Crane safe load indicator (SLI), reflects height, amplitude, weight, and overload information on the monitor in real time through a human-machine interface and various sensors, so the spider crane can be effectively used by the operator within a safe range. When the crane exceeds the allowable safety range, the system issues an alarm to remind the operator.
With its small footprint and multi-outrigger sensing, the system is ideal for glass installation, HVAC placement, and historic-building renovation where space and stability margins are tight. It monitors lifting moment across multiple support and boom postures, warning before exceeding rated capacity in any configuration.
Applicable Models
Spider cranes and mini crawler cranes 0.8–20 t.
Key Features
- Multi-posture moment monitoring
- Outrigger / support status sensing
- Overload and instability warning
- Compact display for confined cabs
- Limit-interlock support
System Parameters
- Working voltage: DC12–36V
- Working temperature: -20℃ ~ +70℃
- Storage temperature: -20℃ ~ +70℃
- System error: ±3%
- Display error: ±5%
- Relay contact capacity: AC220V 3A
- Protection level: IP65
Main Components
- Angle sensor
- Indicator (cabin display)
- Pressure sensor
- Data acquisition & control unit

Application Case
A glass-installation contractor uses SeeZol spider-crane LMIs for rooftop curtain-wall lifts, where the system confirms stable capacity before each pick in cramped setups.





