Zomax offset trolley single girder overhead crane is a specialized type of crane designed to maximize workspace and improve material handling efficiency. Unlike standard overhead cranes with a centered trolley on the beam, the offset trolley design shifts the trolley to one side of the beam, creating additional advantages for specific applications. The cranes are particularly well-suited facilities where the crane’s installation height is low, but there is ample headroom between the top surface of the track and the plant’s ceiling. This design utilize vertical space within the workshop, allowing for a higher lifting height for the hoist.
Single Girder with Top Running configuration
Hoist Mounted on an Angular Trolley Structure: Provides a stable and robust platform for the hoist, ensuring smooth and precise movement.
Offset Trolley Positioned Above the Crane Beam: Enhances accessibility to the working area and optimizes space utilization.
Box-type Girder Structure: Designed for high strength and durability, offering excellent load distribution and rigidity.
Conical Motor with Integrated Braking and Open-Gear Transmission Mechanism: Delivers reliable and efficient power transfer, with integrated braking for precise control.
Travelling Motor: Optional soft start motor and frequency conversion speed regulation allow for smooth acceleration and deceleration, reducing mechanical stress and improving control.
Operation modes: Pendant control or remote control
| Lifting capacity | Up to 20 tons or tailored |
| Lifting height | Tailored |
| Span | ≤31.5m or tailored |
| Rated voltage： | 220V/380V/400V/415V/660V, 50-60Hz, 3ph AC |
| Working class | A3.A4 |
| Temperature | Standard temperature: -20°C … +40°C. |
| Protection | IP44/IP54 |
| Crane type | Single girder, top-running |
| Girder design | Profile box |
| Rope | Steel wire rope |
| Hoisting motor | Lifting: single-speed or double speedTravelling: double speed |
| Paint | One coat of primer and two coats of topcoat, total thickness exceeding 105µm |
| Trolley type | Electric wire rope hoists |
| Control options | Pendant / remote |
| Environment | Indoors and outdoors |
| protection devices | Anti-collision, sound and light alarm devices, Circuit self-check protector, Flow phase lack protection, etc. |
Increased Lifting Height compared to standard designs
Increasing the effective working area under the crane
Reduces dead zones
Specialized type for specific applications
Precise control and efficient power transfer
Main girder: the main load-bearing component,Q235B carbon structural steel with seamless once forming technology more strong and elegant.
End Carriage :two end beams at either end of the bridge, each equipped with a quality driving wheel set and buffers.
Hoisting Mechanism: Uses a high-torque conical rotor squirrel cage motor with a disc brake. Equipped with a CD/MD electric wire rope hoist.
Control System: Includes an electrical cabinet, remote control, or console for lifting, movement, and stopping operations.
Safety Devices: Limit switches and overload protection ensure safe operation by preventing overloading and stopping the crane at designated positions.
The offset trolley single girder overhead crane is commonly used in industries and locations where space optimization and increased lifting height are essential. It is particularly useful in workshops where the crane’s runway is set at a lower height but there is ample space between the crane and the ceiling. It also proves beneficial in warehouses and storage facilities, where it maximizes vertical storage space by allowing the crane to lift loads closer to the ceiling. Also, this crane is ideal for manufacturing plants, steel mills, metal processing facilities, and other locations where efficient use of vertical space is necessary.
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