Sany Electrical Device-Boom

The Sany Electrical Device-Boom is a comprehensive OEM electrical harness and sensor network that powers, monitors, and controls all electronic functions on the boom structure of Sany heavy truck cranes, all‑terrain cranes, and large excavators.

This Sany Electrical Device-Boom integrates a complete set of boom harnesses, proximity switches, working lamps, clearance lights, angle/length sensors, an overwind detector, and a wire-through pulley assembly into a single, factory‑matched electrical system. When you need authentic replacement components, trust Sany Parts to deliver factory-original quality and precise fitment.

The Sany Electrical Device-Boom is specifically designed for Sany STC‑series and SAC‑series cranes, providing reliable power distribution, sensor feedback, and control communication for boom positioning, load monitoring, and lighting, ensuring maximum lifting efficiency, safety, and operational uptime in the most demanding construction and mining environments.

Sany Electrical Device-Boom — OEM boom electrical harness and sensor network for Sany heavy truck cranes and all‑terrain cranes

What is the Sany Electrical Device-Boom?

The Sany Electrical Device-Boom is a complete OEM electrical system that powers, monitors, and controls all electronic functions on the boom structure of Sany heavy lifting equipment. This integrated network includes harnesses, sensors, lighting, and safety devices that enable precise boom positioning, load monitoring, and safe operation.

The Sany Electrical Device-Boom comprises 22 precision‑engineered components that function as an integrated electrical control network. Two main harnesses (11141483, 10166002) distribute power and signals throughout the boom structure. Multiple proximity switches (60030604, B241200000884, 60047218) detect boom position and extension limits. Working lamps (A241100000312), clearance lights (A241100000313), and a top boom lamp (A241100000314) provide illumination for nighttime operations. An angle/length sensor (A240600000159) provides real‑time boom geometry data, while an overwind detector (10010739) with weight hammer (10044528) prevents dangerous two‑blocking conditions.

The Sany Electrical Device-Boom is critical for crane safety, productivity, and diagnostics. It provides the operator with real‑time data on boom angle, extension length, and load weight, enabling informed decision‑making. The system also includes diagnostic capabilities that alert the operator to developing faults, reducing unplanned downtime and maintenance costs.

This system is a direct replacement for worn or damaged boom electrical assemblies on Sany STC‑series and SAC‑series cranes. By using this genuine assembly, you ensure that all wiring harnesses, connectors, and sensors match factory specifications, eliminating electrical faults and ensuring reliable communication between the boom and the cab control system.

Product Parameters of Sany Electrical Device-Boom

Technical specifications: The Sany Electrical Device-Boom operates on a 24V DC power supply, with a total power capacity exceeding 200 watts for lighting and sensor circuits. The main harnesses (11141483, 10166002) are manufactured with high‑temperature XLPO insulation (rated for +125°C) and abrasion‑resistant nylon braided sleeving, featuring Deutsch DT connectors with IP67 sealing for dust and moisture protection.

The angle/length sensor (A240600000159) provides measurement accuracy of ±0.5 degrees and ±10 mm, with a 4‑20 mA output signal. The proximity switches (60030604, B241200000884, 60047218) are inductive type with a sensing distance of 8‑12 mm and a response frequency of 500 Hz. The overwind detector (10010739) with weight hammer (10044528) is a mechanical limit switch that activates at a predetermined rope angle to prevent two‑blocking.

All lighting components are LED‑based with a rated life of 50,000 hours, featuring polycarbonate lenses and corrosion‑resistant housings. The wire‑through pulleys (A229900006575, A229900005525) are designed for smooth cable routing with minimal friction. All components are manufactured under ISO 9001:2025 certification and are 100% traceable to original production batches, with a field service life exceeding 8,000 operating hours under heavy‑duty conditions when properly maintained.

Why Choose Our Sany Electrical Device-Boom?

Complete 22‑Component OEM Kit — No Missing Parts: The Sany Electrical Device-Boom includes every harness, sensor, lamp, and connector as a single, factory‑matched assembly. This eliminates compatibility problems that arise from sourcing individual components from different suppliers, ensuring that all harness lengths, connector pinouts, and sensor calibrations match factory specifications.

Integrated Overwind Protection and Angle/Length Sensing: The Sany Electrical Device-Boom includes an overwind detector (10010739) with weight hammer (10044528) that prevents dangerous two‑blocking conditions, as well as a precision angle/length sensor (A240600000159) that provides real‑time boom geometry data. These safety and monitoring features are essential for crane operation and are fully integrated into the electrical system.

Durable Harness Construction with IP67 Connectors: The Sany Electrical Device-Boom features high‑temperature XLPO insulation, abrasion‑resistant nylon braided sleeving, and Deutsch DT connectors with IP67 sealing. This robust construction ensures reliable signal transmission and power delivery even in the harsh vibration, temperature, and moisture conditions typical of crane operation.

Fleet‑Proven Reliability and Comprehensive Warranty: The Sany Electrical Device-Boom is standard equipment on Sany STC‑series and SAC‑series cranes in over 80 countries. Fleet data shows that genuine Sany boom electrical systems deliver an average service life exceeding 8,000 hours—three times longer than generic aftermarket assemblies—while eliminating electrical faults and harness failures. The system is backed by a 24‑month manufacturer’s warranty covering harness integrity, connector performance, and sensor accuracy. Volume pricing, consignment stock, and global technical support are available for large fleets.

What are the Routine Maintenance Considerations for the Sany Electrical Device-Boom?

Daily visual inspection before operation: Before each shift, inspect the Sany Electrical Device-Boom for visible damage to harnesses, connectors, and sensors on the boom structure. Check that all harnesses are securely clipped and not chafing against moving parts. Look for any signs of corrosion on connectors or exposed wires. Ensure that the overwind detector and weight hammer are free‑moving and not obstructed.

Connector cleaning and dielectric grease application — every 500 operating hours: Clean all Deutsch connectors on the boom harnesses with electrical contact cleaner and apply a thin layer of dielectric grease to the connector seals. This prevents moisture ingress and corrosion, ensuring reliable signal transmission. Check that all connector locking wedges are engaged and that terminals are fully seated. Inspect the wire‑through pulleys for smooth rotation and cable wear.

System diagnostics and sensor calibration — every 1,000 operating hours: Perform a diagnostic test of the Sany Electrical Device-Boom using the crane’s onboard display or a diagnostic tool. Verify that the angle/length sensor (A240600000159) is reporting accurate values. Test the proximity switches by manually actuating them and checking the signal response. If any sensor reading is out of tolerance, recalibrate or replace the sensor as required.

Preventative replacement schedule — every 4,000 hours or 2 years: For high‑use cranes and excavators, Sany recommends a full inspection and replacement of the Sany Electrical Device-Boom every 4,000 operating hours or 2 years. Replace any harness that shows signs of insulation cracking or connector corrosion. Replace the angle/length sensor and proximity switches as a set. Keep a detailed maintenance log tracking diagnostic results, connector cleaning dates, and component replacement history. By following this proactive schedule, the Sany Electrical Device-Boom can reliably exceed 8,000 operating hours.

The two main harnesses (11141483, 10166002) are the backbone of the Sany Electrical Device-Boom. Harness 2 (11141483) provides power and signal distribution for the boom lighting, proximity switches, and the overwind detector. The main boom harness (10166002) connects the cab control system to the angle/length sensor and provides power to the junction box (60079097). Both harnesses are manufactured with cross‑linked polyethylene insulation that resists abrasion, oil, and UV degradation.

The angle/length sensor (A240600000159) is a critical component for safe crane operation. It measures the boom angle using a precision potentiometer and the boom length using a cable extension transducer. The sensor outputs a 4‑20 mA signal that is interpreted by the crane’s load moment indicator. If the sensor drifts or fails, the crane may not accurately display the load chart, potentially leading to overloading. Regular calibration is essential.

The overwind detector subassembly (10010739) with weight hammer (10044528) is a mechanical safety device that prevents the hook block from contacting the boom tip. When the rope angle exceeds a predetermined limit, the weight hammer actuates a limit switch, cutting power to the hoist and sounding an alarm. This device must be tested daily by manually lifting the weight hammer to verify switch operation.

For Sany cranes operating in extreme cold climates (below -25°C), special considerations apply to the Sany Electrical Device-Boom. The wiring harnesses remain flexible down to -40°C, but the connectors may become more difficult to mate. Use a silicone‑based lubricant on connector seals to ease mating. The angle/length sensor may have slower response in cold conditions; allow the machine to idle for 10‑15 minutes before full operation. The overwind detector weight hammer should be checked for free movement, as ice buildup can cause false triggering.

The Sany Electrical Device-Boom is also available as part of a complete crane electrical system overhaul kit, which includes the boom electrical device, the swing table electrical system, and the cab display unit. Sany recommends this complete‑kit approach for vehicles with over 8,000 operating hours, as it allows the entire electrical control and monitoring system to be renewed in a single service event, eliminating the risk of hidden harness corrosion or sensor drift that could compromise machine control and safety.

Fleet managers using this strategy report a 50% reduction in electrical‑related breakdowns and a 40% reduction in total crane maintenance costs over the equipment’s life. Contact our parts specialists through the Get Quotation button above for custom kit configurations tailored to your fleet’s specific needs.