HSZ-C Chain Block Manual Chain Hoist
Looking for a heavy-duty HSZ-C chain block? Featuring optional load limiters, G80 alloy chains, and drop-forged hooks. Inquire for direct factory wholesale quotes!
Description
Product Overview
The HSZ-C HSZ-C Chain Block (widely recognized across heavy industrial sectors as the Manual Chain Hoist with Overload Protection, and specified by safety-conscious operations in Latin America as Polipasto manual de cadena con limitador) represents an upgraded tier of manual lifting technology. Designed to deliver high mechanical efficiency without relying on external power grids, this series combines an ultra-compact body with heavy-duty structural components, making it an essential manual lifting solution for shipyards, construction sites, automotive plants, and heavy machinery workshops.
Built to withstand severe operational conditions, this G80 alloy steel manual pulley block integrates high-tensile alloy load chains, smooth-running zinc-plated hand chains, and heat-treated alloy steel hooks. The HSZ-C model offers an optional mechanical load limiter mechanism. This feature prevents operators from accidentally exceeding rated safe working loads, protecting internal gearing from fatigue failure, significantly extending service life, and meeting rigorous site safety standards.
Advanced Mechanical Engineering & Safety Innovations
Safe overhead lifting in hazardous or remote job sites requires engineered safety margins and efficient mechanical leverage:
Optional Mechanical Load Limiter Device: Can be equipped with an advanced slip-clutch load limiter mechanism at an additional cost. When an operator attempts to lift a load exceeding safe capacities, the clutch slips automatically, preventing structural overload without dropping the suspended load.
Low Hand Pull Effort Geared Drive: Features optimized gear transmission ratios that reduce physical operator fatigue. The low hand pull effort chain block configuration allows single operators to hoist heavy industrial components smoothly and continuously.
Drop-Forged Heat-Treated Safety Hooks: Manufactured from high-tensile alloy steel, both top and bottom hooks undergo precision thermal treatment. Under extreme overload scenarios, the hooks deform gradually rather than fracturing suddenly, giving on-site riggers visual indication of load strain.
Corrosion-Resistant Zinc-Plated Hand Chain: Outfitted with a premium zinc-coated hand chain that resists ambient moisture and atmospheric oxidation, ensuring smooth feeding through the guide wheel without jamming.
Technical Specifications & Parameter Matrix
Certified engineering parameters, physical hook-to-hook dimensions, and shipping profiles for the complete HSZ-C industrial manual lifter 0.5t to 10t lineup:
| Model | Capacity | Standard Lift | Test Load | Min. Distance Between Hooks | Chainpull to Lift Full Load | No. of Load Chain Fall Lines | Diameter of Load Chain | Net Weight | Gross Weight | Packing Measurement |
| HSZ-C1/2 | 0.5 t | 2.5 m | 0.75 t | 285 mm | 25 N | 1 | 6 mm | 8.0 kg | 9.4 kg | 28 * 21 * 17 cm |
| HSZ-CL1 | 1.0 t | 2.5 m | 1.50 t | 315 mm | 33 N | 1 | 6 mm | 10.0 kg | 11.5 kg | 30 * 24 * 18 cm |
| HSZ-C1 1/2 | 1.5 t | 2.5 m | 2.25 t | 340 mm | 34 N | 1 | 8 mm | 11.0 kg | 12.0 kg | 34 * 29 * 20 cm |
| HSZ-C2 | 2.0 t | 3.0 m | 3.00 t | 380 mm | 34 N | 2 | 8 mm | 14.0 kg | 17.0 kg | 35 * 25 * 19 cm |
| HSZ-C3 | 3.0 t | 3.0 m | 4.50 t | 475 mm | 35 N | 2 | 8 mm | 22.0 kg | 26.0 kg | 38 * 30 * 20 cm |
| HSZ-C5 | 5.0 t | 3.0 m | 7.50 t | 600 mm | 39 N | 2 | 10 mm | 36.0 kg | 43.0 kg | 45 * 35 * 24 cm |
| HSZ-C10 | 10.0 t | 3.5 m | 15.00 t | 700 mm | 41 N | 4 | 10 mm | 68.0 kg | 82.0 kg | 70 * 46 * 75 cm |
B2B Procurement Note: While standard stock configurations range from 0.5t to 10t capacities, heavy-duty industrial builds in 20t, 30t, and 50t configurations are available upon request for heavy construction and infrastructure installations.
Critical Capacity Management & Safe Rigging Dynamics
Rigging supervisors deploying the heavy duty overload protection chain hoist range must evaluate structural reeving and overhead spatial clearances:
Load Chain Fall Scaling vs. Headroom: As lifting capacity scales from the HSZ-C1/2 up to the HSZ-C10, the internal reeving shifts from single to multi-fall chain systems. The 0.5t, 1t, and 1.5t models operate on a fast 1-fall chain line, the 2t, 3t, and 5t variants utilize a 2-fall configuration, and the heavy HSZ-C10 operates on a 4-fall chain matrix. Multi-fall systems reduce physical hand chain effort (maxing at 41 N for 10t), but they increase the minimum hook-to-hook headroom requirement up to 700 mm, which must be factored into low-clearance workspace setups.
Proof Load Safety Ratios: Every unit undergoes rigorous factory proof load testing above its rated capacity. For instance, the HSZ-C10 is tested up to 15.00 t (150% of rated capacity), providing verified mechanical strength before shipment to high-risk industrial jobsites.
Industrial Applications
Heavy Machinery Maintenance & Installation: Plant engineers employ the Manual Chain Hoist with Overload Protection to lower, lift, and align heavy stamping dies, electric turbines, and gearboxes. The optional overload limiter prevents gear damage if a component gets caught during extraction.
Infrastructure & Steel Erection Sites: Structural assembly teams use the HSZ-C Chain Block to hoist steel I-beams, pre-cast concrete panels, and utility piping into place where electrical hookups are unfeasible.
Shipyard Rigging & Marine Maintenance: Marine repair facilities utilize high-capacity HSZ-C5 and HSZ-C10 units to position propeller shafts, align hull sections, and secure deck machinery in corrosive coastal environments.
Mining & Underground Extraction Works: Extraction crews rely on the G80 alloy steel manual pulley block series in confined underground shafts to maneuver heavy drilling equipment and structural steel arches safely.
