HC Square Body Wire Rope Hoist

Square-Profile Housing: The rectangular box-section housing is easier to install, transport, and maintain than the round CD1 housing, and offers a clean, neat appearance. The housing is welded from high-strength steel plate for excellent rigidity and deformation resistance.

Anti-Tangle Rope Guide: The patented anti-tangle rope guide device effectively prevents wire rope from tangling during hoisting and lowering. The split-type guide nut with spring-loaded self-adjusting tension allows the rope to feed out smoothly from the exit without requiring hook load, ensuring long service life.

Heavy Hammer Limit Switch + Dual Protection: The heavy hammer limit switch replaces the traditional cut-off limit rod, providing simple, reliable operation and completely eliminating hook over-travel caused by loose limit rod stops or unreliable cut-off mechanisms. A Load Limiter is also fitted, offering overload, overcurrent, undervoltage, and phase-loss protection.

Modular High-Capacity Design: Built on Type 08 and Type 16 base modules, the hoist can be configured with pulley block ratios (×2/×4/×6/×8) and motor options to cover a full range of high-capacity models — 16t, 20t, 32t, 50t, 63t, 80t, and 100t — greatly expanding its application scope.

Heavy-Duty, Durable Construction: The wound-rotor motor with electromagnetic disc brake replaces the CD1's conical rotor self-braking system, delivering higher braking torque and faster response. The four-stage gear reducer boosts load-carrying capacity by over 50% compared to the three-stage design. The multi-layer winding drum with rope guide is ideal for continuous operation at high lifting heights.

The HC Series Square-Profile Wire Rope Hoist operates on a wound-rotor motor driving a four-stage gear reduction system with multi-layer winding and a pulley block ratio system:

① Power System: The wound-rotor motor (YZR series or equivalent heavy-duty motor) drives the four-stage gear reducer through a coupling. The motor is fitted with an electromagnetic disc brake that engages via spring pressure when power is cut, providing fast response and high braking torque — ideal for frequent start-stop cycles under heavy loads.

② Four-Stage Gear Reduction: Motor speed is progressively reduced through four stages of helical gearing to drive the drum. Compared to the CD1's three-stage design, the four-stage system offers a higher reduction ratio and greater load capacity, meeting the low-speed, high-torque requirements of heavy lifting.

③ Multi-Layer Winding + Rope Guide: The drum is designed for multi-layer wire rope winding, with a mechanical rope guide ensuring even, orderly rope layering across all layers to prevent tangling and jumping. The rope guide moves laterally in sync with drum rotation, guiding the rope in a precise helical pattern.

④ Pulley Block Ratio: The movable pulley block enables rope ratio changes (2/4/6/8 falls). Higher ratios reduce single-rope tension and lower lifting speed, making them suitable for heavy loads; lower ratios provide faster lifting for lighter loads. The HC Series allows quick ratio changes by swapping pulley block configurations.

The HC series square-body wire rope hoist consists of the following core components:

Wound-rotor motor: YZR series wound-rotor asynchronous motor with IP54 protection and Insulation Class F/H. An electromagnetic disc brake is mounted at the motor tail, delivering a braking torque of ≥1.5 times the rated torque.

Four-stage gear reducer: Square housing design with four-stage helical gearing. Gears are carburized, quenched, and ground. The housing is fabricated from high-strength cast iron or welded steel plate, fully sealed to prevent oil leakage.

Drum device: Large-diameter drum with multi-layer winding, paired with a mechanical rope guide. The drum grooves are precision-machined to guide the wire rope into orderly multi-layer winding, preventing rope tangling and jumping. Rope guard plates are fitted at both drum ends.

Wire rope: Anti-rotation wire rope (35×7 or 18×7 construction) with a safety factor of ≥5. Rope diameter is selected based on lifting capacity and pulley ratio.

Pulley block: Available in 2, 4, 6, or 8 rope configurations. Both traveling and fixed pulleys are equipped with rolling bearings for high efficiency and low wear.

Hook block: Forged hook for heavy-duty applications, providing smooth rotation. Includes a hook latch and a mounting base for the load limiter sensor.

Heavy hammer limit switch: Replaces the traditional rope-break limit rod with a simpler, more reliable design that completely eliminates the risk of hook over-travel.

Control box: IP54 protection rating, housing contactors, thermal overload relays, overcurrent protection, undervoltage protection, and phase-loss protection modules. Comes with a load limiter instrument panel.

Heavy-Duty Factory Workshops: Used with overhead cranes for heavy equipment installation, large mold changes, and material handling in steel foundries — 20–100t heavy lifting operations.

Mining & Mineral Processing Plants: Ore crusher maintenance, heavy machinery installation. The HC series' multi-layer winding design suits high-lift underground or open-pit operations.

Railway Freight Yards: Locomotive and rolling stock maintenance, heavy cargo handling. The HC series' M6–M7 work duty classification meets the demands of frequent start-stop continuous operation.

Docks & Warehouses: Large container component handling and heavy machinery hoisting. The HC series' rotation-resistant wire rope and anti-spooling device ensure operational safety.

Hydroelectric Power Stations: Turbine installation and maintenance, gate hoisting. The HC series' 96m ultra-high lifting height reaches deep into power plant bays.

Operating Conditions: Altitude ≤1000m, ambient temperature -25°C to +40°C, relative humidity ≤85% (at +25°C). Power supply: 3-phase 380V/50Hz. Not suitable for lifting high-temperature, toxic, flammable, or explosive materials.

Pre-Operation Checks: Inspect wire rope layering on the drum and confirm the rope guide operates correctly; check the weight limit switch for response sensitivity; inspect electromagnetic disc brake clearance and wear; verify the load limiter indicator is functioning.

Operating Procedures: Never exceed the rated load (overload risk is greater with HC heavy-duty hoists); perform a trial lift before hoisting to confirm braking reliability; monitor rope layering during multi-layer winding and stop immediately to re-adjust if spooling becomes irregular; recalibrate the load limiter parameters after any change in pulley ratio.

Maintenance: Check wire rope lubrication and wear every shift (pay attention to inner-layer rope wear with multi-layer winding); inspect electromagnetic disc brake pad thickness monthly (≥3mm); check reducer oil level and gear oil quality quarterly; inspect rope guide rail wear every six months; conduct a full inspection, load test, and safety check annually.

Specialized in Heavy-Duty Hoists: Kelude Heavy Industry has full production capability for the HC series square box electric hoist, from 16t to 100t. All structural components (square box housing, drum, pulley block) are designed and machined in-house, while key purchased parts (wound-rotor motor, electromagnetic brake, wire rope) are sourced from leading domestic brands.

Modular Flexible Configuration: The combination of 08/16 base modules + pulley block ratios + motor options enables rapid custom design and production — from standard models to non-standard ultra-large tonnage units (e.g., 75t, 90t, and other intermediate capacities). Proven track record includes 63–100t non-standard hoists delivered to hydroelectric plants and steel mills.

Full-Process Heavy-Duty Quality Control: Every HC hoist undergoes a 1.25× rated load static test and a 1.1× dynamic load test before shipment. Each electromagnetic disc brake is individually tested for braking torque and temperature rise. Multi-layer winding rope guides undergo continuous operation testing for ≥2 hours to ensure reliable spooling.

Q: What's the difference between the HC series square box electric hoist and the CD1 type wire rope hoist?

A: The HC model is a heavy-duty enhanced version designed for large tonnage and higher work duty classifications. Key differences from the CD1 model: ① Lifting capacity range of 5~100t (CD1 max 20t); ② Wound-rotor motor with electromagnetic disc brake (CD1 uses conical rotor self-braking); ③ Four-stage gear transmission in the reducer (CD1 uses three-stage); ④ Square housing design (CD1 is cylindrical); ⑤ Multi-layer spooling with rope guide (CD1 single/double layer spooling); ⑥ Work duty M5~M7 (CD1 M3~M5); ⑦ IP54 protection rating (CD1 IP44). The HC model is suited for heavy-duty, high-frequency operations, while the CD1 model is designed for routine applications in small to medium tonnage ranges.

Q: Which national standards does the HC electric hoist comply with, and how are lifting capacity combinations structured?

A: The design and manufacturing of the HC electric hoist comply with JB/T 9008.1 "Wire Rope Hoist" standard and GB/T 3811 Crane Design Standard. Lifting capacity combinations are built on two base modules — the 08 type (16t base) and the 16 type (32t base) — achieving full coverage from 16 to 100t through pulley block ratios (×2/×4/×6/×8) and motor variations. For example: 16-type base (32t) + ratio ×2 = 16t; 16-type base + ratio ×4 = 32t; two 16-type units combined + ratio ×4 = 63t, and so on.

Q: What is the reference price for HC heavy-duty electric hoists?

A: Pricing for HC electric hoists varies significantly based on tonnage, pulley ratio, motor configuration, and lifting height: approximately ¥25,000–60,000 for 16–32t models, ¥60,000–120,000 for 50–63t models, and ¥120,000–250,000 for 80–100t models. Heavy-duty hoists must be paired with bridge cranes of matching capacity, so the total system price requires comprehensive evaluation. Volume purchases or complete package orders qualify for discounted pricing.