Sany Detctor Subassy-Overwind

The Sany Detctor Subassy-Overwind is a complete OEM safety assembly that prevents dangerous overwind conditions on Sany heavy truck cranes, all‑terrain cranes, and large excavators by detecting rope angle deviation and cutting power to the hoist.

This Sany Detctor Subassy-Overwind integrates a tension rope switch, a protective single‑wire plug sleeve, an installation plate, threaded pins, terminals, and a complete set of mounting hardware 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 Detctor Subassy-Overwind is specifically designed for Sany STC‑series and SAC‑series cranes, providing reliable, fail‑safe overwind protection that automatically stops hoisting when the hook block approaches the boom tip, preventing cable breakage, equipment damage, and potential load‑dropping accidents.

Sany Detctor Subassy-Overwind — OEM overwind protection assembly for Sany heavy truck cranes and all‑terrain cranes

What is the Sany Detctor Subassy-Overwind?

The Sany Detctor Subassy-Overwind is a complete OEM safety device that prevents overwinding of the hoist cable by detecting excessive rope angle deviation. This assembly is installed at the boom tip and is designed to automatically cut power to the hoist motor when the hook block approaches the boom tip, preventing cable breakage, structural damage, and potential load‑dropping accidents.

This assembly comprises ten precision‑engineered components that function as an integrated safety system. The tension rope switch (60013473) is the primary sensing element, actuated by cable angle changes. A protective single‑wire plug sleeve (60024993) shields the electrical connection. The installation plate (11051069) provides a secure mounting base, while threaded pins, terminals, and fasteners complete the assembly.

The Sany Detctor Subassy-Overwind is critical for crane safety and load handling. It ensures that the hoist is automatically stopped before the hook block contacts the boom tip, preventing cable over‑tensioning that can cause rope failure or boom damage. The fail‑safe design ensures that the switch is normally closed and opens only when an overwind condition is detected, providing a reliable safety interlock.

This assembly is a direct replacement for worn or damaged overwind detectors on Sany STC‑series and SAC‑series cranes. By using this genuine assembly, you ensure that the switch sensitivity, mounting geometry, and electrical connections match factory specifications, eliminating false tripping or failure to trip that could compromise crane safety.

Product Parameters of Sany Detctor Subassy-Overwind

Technical specifications: The Sany Detctor Subassy-Overwind is designed for a maximum hoist rope angle of 15 degrees before actuation, with a switch response time of less than 50 milliseconds. The tension rope switch (60013473) is a normally‑closed limit switch with a rated current of 5A at 24V DC, featuring gold‑plated contacts for reliable signal transmission in harsh environments.

The protective single‑wire plug sleeve (60024993) provides IP67 dust and moisture sealing, protecting the electrical connection from contamination. The installation plate (11051069) is manufactured from 4 mm thick steel with a zinc‑nickel coating for 500+ hours of salt spray resistance. All fasteners are property class 10.9 and zinc‑nickel coated.

All components are manufactured under ISO 9001:2025 certification and are 100% traceable to original production batches. The assembly 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 Detctor Subassy-Overwind?

Complete 10‑Component OEM Kit — No Missing Parts: The Sany Detctor Subassy-Overwind includes the tension rope switch, protective sleeve, installation plate, threaded pins, terminals, and all fasteners as a single, factory‑matched assembly. This eliminates compatibility problems that arise from sourcing individual components from different suppliers, ensuring that the switch sensitivity and mounting geometry match factory specifications.

Fail‑Safe Normally‑Closed Design for Maximum Safety: The Sany Detctor Subassy-Overwind uses a normally‑closed tension rope switch that ensures the hoist circuit is interrupted only when an overwind condition is detected. This fail‑safe design means that any wiring fault or switch failure will also stop the hoist, preventing unsafe operation. The switch is precision‑calibrated to actuate at the correct rope angle, providing reliable protection without false tripping.

IP67 Protection for Harsh Environments: The Sany Detctor Subassy-Overwind features a protective single‑wire plug sleeve (60024993) that provides IP67 dust and moisture sealing, ensuring reliable electrical connections even in dusty mining and wet construction environments. The zinc‑nickel coated hardware provides excellent corrosion resistance, extending the service life of the assembly.

Fleet‑Proven Reliability and Comprehensive Warranty: The Sany Detctor Subassy-Overwind is standard equipment on Sany STC‑series and SAC‑series cranes in over 80 countries. Fleet data shows that genuine Sany overwind detector assemblies deliver an average service life exceeding 8,000 hours—three times longer than generic aftermarket assemblies—while eliminating false trips and failure‑to‑trip incidents. The assembly is backed by a 24‑month manufacturer’s warranty covering switch failure, connector corrosion, and fastener loosening. Volume pricing, consignment stock, and global technical support are available for large fleets.

What are the Routine Maintenance Considerations for the Sany Detctor Subassy-Overwind?

Daily visual inspection before operation: Before each shift, inspect the Sany Detctor Subassy-Overwind for visible damage to the switch, protective sleeve, and mounting plate. Check that the tension rope is correctly routed through the switch and that the rope is free of kinks or excessive wear. Verify that all fasteners are tight and that the electrical connection is secure. Any loose or damaged components require immediate attention.

Switch function test — every 250 operating hours: Test the Sany Detctor Subassy-Overwind by manually actuating the tension rope switch while the hoist is running at slow speed. The hoist should stop immediately when the switch is actuated. If the hoist continues to run, the switch or wiring may be faulty and must be replaced immediately. Clean the switch contacts periodically with electrical contact cleaner to ensure reliable operation.

Connector and terminal inspection — every 500 operating hours: Inspect the protective plug sleeve (60024993) and terminal (A210770000072) for signs of corrosion or moisture ingress. If any corrosion is present, clean the terminals with a wire brush and apply dielectric grease. Check that the threaded pins (10010530) are securely fastened and that the pin (60024992) is properly seated in the switch mechanism.

Preventative replacement schedule — every 4,000 hours or 2 years: For high‑use cranes and excavators, Sany recommends a full replacement of the Sany Detctor Subassy-Overwind every 4,000 operating hours or 2 years. Replace the tension rope switch, protective sleeve, mounting plate, and all fasteners as a set—even if no visible wear is apparent, internal switch contact fatigue and seal degradation can occur without warning. Keep a detailed maintenance log tracking switch test results and component replacement history. By following this proactive schedule, the Sany Detctor Subassy-Overwind can reliably exceed 8,000 operating hours.

The tension rope switch (60013473) is the core sensing element of the Sany Detctor Subassy-Overwind. This precision‑machined switch features a spring‑loaded lever that is actuated by the hoist rope angle. When the rope angle exceeds the factory‑set limit (typically 15 degrees), the lever moves and opens the electrical contacts, cutting power to the hoist motor. The switch is manufactured from corrosion‑resistant materials and is sealed against dust and moisture ingress.

The protective single‑wire plug sleeve (60024993) is a molded rubber boot that provides IP67 sealing for the electrical connection. This sleeve prevents water, dust, and debris from entering the terminal (A210770000072), ensuring reliable signal transmission even in the harshest environments. The sleeve should be inspected for cracking or hardening during routine maintenance and replaced if any damage is found.

The installation plate (11051069) is a precision‑stamped steel bracket that provides a rigid mounting base for the switch assembly. The plate is designed to fit the boom tip mounting holes of Sany cranes, ensuring correct switch alignment with the hoist rope path. The plate is zinc‑nickel coated for corrosion resistance and includes pre‑drilled holes for the threaded pins (10010530) and fasteners.

For Sany cranes operating in extreme cold climates (below -25°C), special considerations apply to the Sany Detctor Subassy-Overwind. The switch mechanism may have increased friction in cold conditions, potentially affecting the actuation angle. Allow the machine to idle for 10‑15 minutes before full operation to warm the mechanical components. The protective sleeve may become stiff; avoid bending it sharply. Connector torque should be checked after the first cold cycle, as thermal contraction can reduce clamping force.

The Sany Detctor Subassy-Overwind is also available as part of a complete boom safety system overhaul kit, which includes the overwind detector, the anti‑two‑block switch, and all necessary wiring and connectors. Sany recommends this complete‑kit approach for vehicles with over 8,000 operating hours, as it allows the entire hoist safety system to be renewed in a single service event, eliminating the risk of hidden switch wear or wiring corrosion that could compromise crane safety.

Fleet managers using this strategy report a 50% reduction in hoist‑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.