Tower Crane slewing mechanism and spares

OMD-II Tower Crane Slewing Control Unit | 48V AC Rotation Controller Spare Parts
OMD-II tower crane slewing control unit is used in the tower crane slewing / rotation control system. It helps control the electromagnetic clutch voltage, allowing the slewing mechanism to start smoothly, rotate steadily and stop safely.
This part is suitable for tower crane repair, electrical system maintenance, used tower crane refurbishment and spare parts replacement projects.

Why This Slewing Controller Is Important
The slewing system is one of the key working mechanisms of a tower crane. If the slewing controller is unstable or damaged, the crane may have rough rotation, poor response, abnormal stopping or electromagnetic clutch control problems.
The OMD-II slewing controller helps improve rotation stability and reduce sudden mechanical impact during tower crane operation.
- Smoother tower crane rotation
- Better electromagnetic clutch control
- Stable start and stop performance
- Reliable replacement for maintenance work
- Suitable for tower crane electrical cabinet repair
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | OMD-II Tower Crane Slewing Control Unit |
| Application | Tower Crane Slewing / Rotation System |
| Rated Working Voltage | AC 48V, 50Hz |
| Power Consumption | Less than 5W |
| Output Voltage | DC 0–20V |
| Output Current | DC 0–50A |
| Working Mode | Continuous Operation |
| Main Function | Electromagnetic Clutch Voltage Control |

Common Replacement Situations
This tower crane rotation controller is commonly requested when the slewing system shows the following problems:
- Tower crane rotation is not smooth
- Slewing start or stop is unstable
- Electromagnetic clutch control is abnormal
- Old controller is damaged or aging
- Electrical cabinet requires spare parts replacement
- Used tower crane needs refurbishment before resale or export

Suitable Buyers
This OMD-II slewing control unit is suitable for buyers who need practical tower crane spare parts instead of general electrical components.
- Tower crane maintenance companies
- Used tower crane dealers
- Construction machinery spare parts distributors
- Tower crane rental companies
- Project service teams
- Importers in UAE, Saudi Arabia, Kazakhstan, Uzbekistan, Southeast Asia and Africa
Real Product Details
The controller comes with numbered wiring terminals, red connection wires, mounting brackets and clear product nameplate. Before delivery, we can provide real product photos for buyer confirmation.
For correct matching, please confirm the controller model, voltage, wiring position and old unit appearance before ordering.

How We Help You Confirm the Correct Model
Electrical spare parts must be confirmed carefully before shipment. To avoid wrong purchase, please send us the following information:
- Old slewing controller photo
- Nameplate photo
- Terminal wiring photo
- Tower crane brand and model
- Electrical cabinet photo if available
Our team will check the details and help confirm whether this OMD-II tower crane slewing controller is suitable for your crane.
Why Choose ATLAS Tower Crane Spare Parts
ATLAS supplies tower crane spare parts for used tower cranes, tower crane maintenance, repair projects and export buyers. We focus on practical spare parts that are commonly needed by site service teams and machinery dealers.
- Real product photos before order
- Model confirmation support
- Tower crane spare parts supply experience
- Support for used tower crane refurbishment
- Export packing for international buyers
- Fast quotation by WhatsApp or email
Inquiry for OMD-II Tower Crane Slewing Control Unit
If you are looking for OMD-II slewing controller, tower crane rotation controller, tower crane electrical spare parts or other tower crane components, contact us for price and model confirmation.
Email: [email protected]
WhatsApp: +86 13905120947
Website: atlastowercrane.com
FAQ
What is the function of OMD-II tower crane slewing controller?
It controls the electromagnetic clutch voltage in the tower crane slewing system, helping the crane rotate smoothly and stop steadily.
What is the rated voltage?
The rated working voltage is AC 48V, 50Hz.
What is the output voltage?
The output voltage range is DC 0–20V.
Can it be used for used tower crane repair?
Yes. It is suitable for used tower crane repair, refurbishment and spare parts replacement.
How do I confirm if it fits my crane?
Please send your old controller photo, nameplate photo and wiring photo. We will help check before quotation.
