CD1 Single Speed Wire Rope Electric Hoist

Self-Braking Cone Rotor: Equipped with a high starting torque cone rotor brake asynchronous motor that integrates both driving and braking functions into a single unit—no external brake required, reducing maintenance points and failure rates. The motor has a 25% duty cycle, Class B/F insulation, and an IP44/IP54 Protection Rating.

Three-Stage Helical Gear Transmission: Features a three-stage fixed-shaft helical gear reduction mechanism. Gears and Gear Shafts are made of heat-treated Alloy Steel, while the gearbox housing and cover are precision-cast from high-quality cast iron with tight assembly and effective Sealing—delivering high transmission efficiency and low noise.

Dual Limit Switch Safety Protection: The control box is equipped with upper and lower travel power-off limit switches that cut off the main circuit in emergency situations, ensuring safe hoist operation. Electrical components offer long service life for greater reliability.

Multi-Application Adaptability: A complete series covering 7 capacity grades from 0.5t to 20t, with lifting heights from 6m to 30m. Can be installed on Single Girder Cranes, Bridge Cranes, Gantry Cranes, suspension cranes, Cantilever Cranes, and more. With minor modifications, it can also be used as a winch.

Extensive Range and High Versatility: The CD1 series has been market-proven for decades, with ample spare parts availability and easy Maintenance. It can operate on straight, curved, or circular overhead tracks on the same plane, and can be used on various cranes that utilize I-Beam as the rail.

The working principle of the CD1 Single-Speed Wire Rope Electric Hoist is based on the cone rotor brake asynchronous motor driving a three-stage fixed-shaft helical gear reduction system:

① Integrated Power and Braking: When the motor is energized, the cone rotor moves axially under magnetic force, compressing the spring to release the brake. The rotor drives the fan wheel to rotate, transmitting Torque to the gearbox through a spline coupling. When power is cut off, the cone rotor is axially pressed against the conical brake ring by spring force, generating friction torque that rapidly stops the rotor and holds the suspended load in place.

② Three-Stage Reduction Transmission: The high-speed motor rotation is progressively reduced through three stages of fixed-shaft helical gears, ultimately transmitting power to the drum shaft to drive the Drum rotation. The three-stage helical gear meshing provides smooth, efficient transmission with low noise, suitable for continuous operation.

③ Drum Lifting: As the Drum rotates, the Wire Rope is wound or released in an orderly manner, enabling the Hook block to raise or lower the load. The wire rope is neatly arranged in the drum grooves to prevent tangling and rope jumping.

④ Travel Operation: When paired with an electric trolley, the Travel Motor drives the driving wheel through an open gear to travel along the lower flange of the I-Beam, while the driven wheel follows for steering, enabling horizontal movement of the hoist along the rail.

The CD1 Single-Speed Wire Rope Electric Hoist consists of the following core components:

Cone Rotor Motor: A single-speed cone rotor brake asynchronous motor that integrates power and braking. The motor stator features Class B or F insulated windings with an IP44/IP54 Protection Rating. When power is off, the spring presses the cone ring for automatic braking.

Reducer / Gearbox: Three-stage fixed-shaft helical gear reduction. Gears and Gear Shafts are made of heat-treated Alloy Steel, and the housing and cover are precision-cast from high-quality cast iron with effective Sealing.

Drum Device: The Wire Rope is wound around the Drum, whose grooved design guides the rope into orderly layers, preventing tangling and rope jumping. Rope guard plates on both sides of the drum prevent Wire Rope derailment.

Hook Device: A forged Hook block fitted with Pulleys and a Hook Latch, providing flexible rotation and reliable load-bearing safety.

Coupling: Connects the motor output shaft to the gearbox Input Shaft, transmitting Torque while compensating for Coaxiality deviations.

Travel Mechanism (Optional): Includes a driving wheel and driven wheel. The Travel Motor drives the driving wheel through an open gear to travel along the lower flange of the I-Beam for horizontal movement.

Control Box and Limit Switch: Contains upper and lower travel power-off limit switches and an emergency main circuit cut-off device for operational safety. A soft cable current collector supplies power to the travel mechanism.

Push-Button Pendant: A handheld control pendant available in both tethered and wireless remote control versions for flexible operation.

Factory Workshops: Used with Electric Single-Girder Cranes for routine lifting tasks such as workpiece handling, equipment installation, and material transfer on production lines.

Warehouses & Yards: Mounted on single girder or suspension cranes for cargo loading/unloading, stacking, and handling, ideal for warehousing operations with light to medium-duty materials.

Mines & Ports: Paired with Gantry Cranes for bulk cargo handling and equipment maintenance. The CD1's versatility and readily available spare parts make it well-suited for outdoor field operations.

Power Station Maintenance: For generator set overhauls, transformer installations, and other tasks requiring stable, reliable lifting equipment. The CD1's conical rotor self-braking mechanism ensures safe load suspension in mid-air.

Winch Retrofitting: With minor modifications, the CD1 can be adapted for use as a winch, meeting temporary or permanent requirements for ground traction and material lifting.

Operating Conditions: Ambient temperature -20°C to +40°C, Relative Humidity ≤85%, altitude ≤1000m. Suitable for locations without fire, explosion, or corrosive media hazards. Power Supply: three-phase AC 380V/50Hz. Duty type: intermediate (JC25%). For each higher Work Duty classification, the Rated Lifting Capacity is reduced by 20%.

Pre-Operation Checks: Inspect the Wire Rope for broken wires, kinks, or excessive Wear; check the hook block's anti-release device and rotation smoothness; verify button responsiveness and Limit Switch functionality.

Operating Procedures: Overloading is strictly prohibited; the load weight must not exceed the rated load. Avoid angled pulls and never lift loads over personnel. Before lifting, ensure the hook is vertical, start slowly to take up slack in the Wire Rope, then accelerate. Stop smoothly with gradual Deceleration; avoid sudden stops or drops.

Maintenance: Check Wire Rope Lubrication and Wear every shift; inspect the conical brake ring Wear (≤1.5mm) monthly; check the Reducer oil level quarterly and replace Gear Oil periodically; conduct a full crane inspection and Load test annually. Store in a dry, ventilated area during prolonged inactivity.

Proven Design, Market Verified: The CD1 Single-Speed Wire Rope Electric Hoist is the most widely used classic model in the lifting industry. Kelude Heavy Industry manufactures all core components of the CD1 series in-house, including the Conical Rotor Motor, Reducer Gear, and Drum. Each unit undergoes a 2-hour full-load test before shipment, ensuring a braking distance of ≤50mm.

Significant Cost Advantage: Compared to the MD1 Two-Speed model, the CD1 eliminates the need for a two-speed motor and control system, resulting in a 15~25% lower overall price. For standard lifting and handling tasks that don't require slow-speed positioning accuracy, the CD1 is the most economical and practical choice. For example, in the 1t class, the CD1 is 30kg lighter than the MD1 (155kg vs 185kg) and has lower motor power.

Universal Parts, Easy Maintenance: As the most widely installed Wire Rope Electric Hoist model on the market (over one million units nationwide), the CD1 features highly interchangeable core components such as the Conical Rotor Motor, Reducer Gear, and Hook block. These can be replaced without special tools, keeping maintenance costs exceptionally low.

Q: How to choose between the CD1 and MD1 Wire Rope Electric Hoists?

A: The CD1 is Single-Speed (8m/min), while the MD1 is Two-Speed (8/0.8m/min). Selection advice: For standard lifting and handling tasks (warehouse loading/unloading, workshop transfer, dock yards), the Single-Speed CD1 is sufficient and offers a lower price, lighter Dead Weight, and simpler Maintenance. If slow-speed fine positioning is needed for installation or mold alignment, choose the Two-Speed MD1. The CD1 is 15~25% cheaper and 20~30kg lighter than the MD1 for the same capacity.

Q: Which national standards does the CD1 Wire Rope Electric Hoist comply with?

A: The design & manufacturing of the CD1 series wire rope electric hoist strictly complies with GB/T 3811 Crane Design Standard and JB/T 9008.1 Wire Rope Electric Hoist. Electrical safety is in accordance with GB 5226.1 Safety of Machinery — Electrical Equipment of Machines, with Protection Rating (IP) IP44~IP55 and Insulation Class B/F. Installation, retrofit, and supervision inspection are carried out per TSG Q7014.

Q: Can the CD1 electric hoist be converted for use as a winch?