Description
The WSM-4035 Roll-Up Star Vent Winder from Woosung Hitec is a robust, high-torque DC motorised system designed specifically for greenhouse side-vent and roll-up ventilation. Engineered for reliable daily operation, this 24V unit delivers smooth, controlled winding for film ventilation systems on polytunnels, commercial greenhouses, and other protected-cropping structures.
Built with a durable gear housing and heavy-duty motor, the WSM-4035 provides 40Nm of torque under normal load and up to 60Nm at maximum operation, ensuring dependable performance even on long or tightly tensioned vent runs. Its operating range of 1–35 rotations allows it to accommodate a wide variety of greenhouse designs.
Designed for practical on-site use, the WSM-4035 features low energy consumption (62W under normal load) and an efficient winding speed of 3.5–3.3 RPM, providing steady, controlled vent movement that protects your greenhouse covering materials. With a 20-minute MCR rating at normal usage and a 2.4kg main unit weight, it is easy to install, integrate, and maintain.
This model is widely used in commercial horticulture for dependable, automated side ventilation – ideal for growers needing reliable airflow without manual winding.
Key Features
- Model: WSM-4035
- Application: Motorised greenhouse vent/roll-up side ventilation
- Voltage: DC 24V
- Normal Operation:
- Current: 2.6A (62W)
- Torque: 40Nm
- RPM: 3.5rpm
- Maximum Operation:
- Current: 3.5A (84W)
- Torque: 60Nm
- RPM: 3.3rpm
- Rotation Limit: 1–35 turns
- Duty Cycle: 20 minutes (MCR at normal operation)
- Weight: 2.4kg
- Manufacturer: Woosung Hitec Co., Ltd – Made in Korea
Ideal For
- Commercial greenhouses
- Polytunnels with side-roll ventilation
- Replacement units for existing Roll-Up Star installations
- Growers requiring automation or reduced manual labour

















