Sany Electrical System-Jib

The Sany Electrical System-Jib is a complete OEM electrical harness and weight hammer assembly that powers, monitors, and controls all electronic functions on the jib structure of Sany heavy truck cranes, all‑terrain cranes, and large excavators.

This Sany Electrical System-Jib integrates two dedicated jib harnesses, a ring weight hammer, and a precision mounting pin into a single, factory‑matched assembly. When you need authentic replacement components, trust Sany Parts to deliver factory-original quality and precise fitment.

The Sany Electrical System-Jib is specifically designed for Sany STC‑series and SAC‑series cranes, providing reliable power distribution, sensor feedback, and overwind protection for jib extension and luffing functions, ensuring maximum lifting efficiency, safety, and operational uptime in the most demanding construction and mining environments.

Sany Electrical System-Jib — OEM jib electrical harness and overwind protection assembly for Sany heavy truck cranes and all‑terrain cranes

What is the Sany Electrical System-Jib?

The Sany Electrical System-Jib is a complete OEM electrical and safety assembly that powers, monitors, and protects the jib structure on Sany heavy lifting equipment. This integrated system ensures that the jib extension, luffing, and overwind protection functions operate reliably, providing safe and efficient lifting performance.

This assembly comprises four precision‑engineered components that function as an integrated electrical and safety network. Jib Harness 1 (10181901) and Jib Harness 2 (10181902) provide power and signal distribution to jib-mounted sensors, lamps, and actuators. The ring weight hammer (10022380) is a mechanical overwind protection component that actuates a limit switch when the jib rope angle exceeds safe limits. A precision pin (A210491000018) secures the weight hammer to the jib structure.

The Sany Electrical System-Jib is critical for safe jib operation and load handling. The harnesses ensure that jib angle sensors, limit switches, and lighting receive power and communicate with the cab control system. The ring weight hammer provides mechanical fail‑safe protection against overwind conditions, preventing the jib tip from contacting the hoist rope and causing damage or load‑dropping accidents.

This system is a direct replacement for worn or damaged jib electrical and safety components on Sany STC‑series and SAC‑series cranes. By using this genuine assembly, you ensure that all harness connections, sensor calibrations, and mechanical clearances match factory specifications, eliminating electrical faults and ensuring reliable overwind protection throughout the jib’s service life.

Product Parameters of Sany Electrical System-Jib

Technical specifications: The Sany Electrical System-Jib operates on a 24V DC power supply, with a total current capacity of 10A for the harness circuits. Jib Harness 1 (10181901) is a multi‑conductor cable with 8 wires, featuring high‑temperature XLPE insulation (rated for -40°C to +125°C) and a durable PVC jacket, terminated with Deutsch DT connectors for vibration‑resistant connections. Jib Harness 2 (10181902) is a 4‑conductor cable, also with XLPE insulation and Deutsch connectors, designed for sensor and limit switch circuits.

The ring weight hammer (10022380) is manufactured from high‑density cast iron with a precision‑machined bore for the mounting pin. It has a mass of 5 kg, providing sufficient inertia to actuate the overwind limit switch under normal operating conditions. The pin (A210491000018) is a hardened steel pin with a zinc‑nickel coating for corrosion resistance, featuring a retaining ring groove for secure installation.

All components are manufactured under ISO 9001:2025 certification and are 100% traceable to original production batches. The system has been validated on Sany STC and SAC series cranes, demonstrating a field service life exceeding 8,000 operating hours under heavy‑duty conditions when properly maintained.

Why Choose Our Sany Electrical System-Jib?

Complete 4‑Component OEM Kit — No Missing Parts: The Sany Electrical System-Jib includes both jib harnesses, the ring weight hammer, and the mounting pin 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 mechanical clearances match factory specifications.

Integrated Overwind Protection with Ring Weight Hammer: The Sany Electrical System-Jib includes a mechanically actuated ring weight hammer (10022380) that provides fail‑safe overwind protection. If the jib rope angle exceeds safe limits, the weight hammer lifts and actuates a limit switch, immediately cutting power to the hoist and preventing dangerous two‑blocking conditions. This mechanical backup enhances the electronic safety systems.

Dual Harness Design for Redundant Power and Signal Distribution: The Sany Electrical System-Jib uses two separate harnesses—Harness 1 for main power and critical signals, and Harness 2 for auxiliary sensors and lighting. This redundancy ensures that a fault in one harness does not disable the entire jib electrical system, improving reliability and uptime.

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

What are the Routine Maintenance Considerations for the Sany Electrical System-Jib?

Daily visual inspection before operation: Before each shift, inspect the Sany Electrical System-Jib for visible damage to the harnesses, connectors, and the ring weight hammer. Check that both harnesses are securely clipped and not chafing against moving jib sections. Look for any signs of corrosion on connectors or exposed wires. Verify that the ring weight hammer (10022380) hangs freely and is not obstructed by debris or ice. Ensure the mounting pin (A210491000018) is secure and its retaining ring is in place.

Harness and connector inspection — every 250 operating hours: With the power off, inspect both jib harnesses for insulation cracking, abrasion, or hardening. Check all Deutsch connectors for corrosion or bent pins. Clean connectors with electrical contact cleaner and apply dielectric grease to the seals to maintain IP67 protection. Verify that all cable ties are tight and that harnesses are not stretched or pinched during jib articulation.

Weight hammer and pin check — every 500 operating hours: Manually lift the ring weight hammer (10022380) to verify free movement. It should rise smoothly and return to its resting position without binding. Inspect the mounting pin (A210491000018) for wear or corrosion; replace the pin if any wear exceeds 0.5 mm or if the retaining ring is damaged. Ensure the weight hammer’s bore is clean and lubricated with a light coat of anti‑seize compound to prevent seizing.

Preventative replacement schedule — every 4,000 hours or 2 years: For high‑use cranes, Sany recommends a full replacement of the Sany Electrical System-Jib every 4,000 operating hours or 2 years. Replace both harnesses, the ring weight hammer, and the mounting pin as a set—even if no visible wear is apparent, internal conductor fatigue, seal hardening, and pin wear can occur without warning. Keep a detailed maintenance log tracking inspection results and component replacement history. By following this proactive schedule, the Sany Electrical System-Jib can reliably exceed 8,000 operating hours.

Jib Harness 1 (10181901) is the primary power and signal cable for the jib. It connects the cab control system to jib-mounted sensors, including the angle sensor and limit switches. The harness is designed with a protective nylon braided sleeve that resists abrasion and prevents damage from contact with the jib structure during articulation. Harness 2 (10181902) is a secondary harness used for auxiliary lighting and optional sensors, providing flexibility for customized jib configurations.

The ring weight hammer (10022380) is a critical mechanical safety device that provides backup overwind protection. In normal operation, the weight hangs freely from the jib tip. If the hoist rope angle becomes too steep (indicating that the hook block is approaching the jib tip), the rope contacts the weight, lifting it and actuating a limit switch that cuts power to the hoist motor. This mechanical interlock operates independently of the electronic controls, providing a fail‑safe layer of protection.

The mounting pin (A210491000018) is a precision‑ground component that secures the weight hammer to the jib structure. The pin is case‑hardened to resist wear and features a retaining ring groove that accepts a retaining ring to prevent axial movement. The pin is manufactured from high‑strength alloy steel with a zinc‑nickel coating for corrosion resistance. The pin should be inspected for wear during every maintenance interval; if any galling or diameter reduction is detected, replace it immediately.

For Sany cranes operating in extreme cold climates (below -25°C), special considerations apply to the Sany Electrical System-Jib. The harness insulation remains flexible down to -40°C, but the PVC jacket may stiffen; handle with care during installation. The ring weight hammer should be checked for ice buildup that could affect its free movement. Use low‑temperature grease on the pin to prevent binding. The retaining ring should be inspected for cracking, as cold temperatures can make it brittle.

The Sany Electrical System-Jib is also available as part of a complete jib system overhaul kit, which includes the electrical system, the jib structure wear pads, and the jib luffing cylinder seal kit. Sany recommends this complete‑kit approach for vehicles with over 8,000 operating hours, as it allows the entire jib system to be renewed in a single service event, eliminating the risk of hidden harness wear, weight hammer corrosion, or pin fatigue that could compromise jib safety.

Fleet managers using this strategy report a 50% reduction in jib‑related safety incidents 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.