Greenhouse Manual Film Roll-Up Unit | Side & Top Film Winch

Our manual greenhouse film roll-up unit is an essential, highly reliable ventilation tool designed for commercial agricultural greenhouses, poly tunnels, and shade structures. Engineered for effortless manual operation, this manual winch mechanism allows growers to smoothly roll up or unroll plastic film along the sidewalls or roof peaks to control internal airflow, temperature, and humidity. Constructed with a heavy-duty cast metal housing, high-strength internal gearing, and protective anti-rust coatings, this film roll-up unit ensures precise height adjustment and dependable performance through all seasonal growing conditions.

Two Functional Configurations Available

To accommodate different mounting positions and structural layouts, this series is available in two specialized drive configurations:

• Hand-Crank Side Roll-Up Model: Designed primarily for greenhouse sidewalls. Equipped with an ergonomic rotating handle, an integrated mounting sleeve, and dual anti-friction guide rollers to keep the unit aligned smoothly along the vertical guide pipe.

• Chain-Hoist Roof/Top Roll-Up Model: Optimized for roof ventilation or tall sidewall installations. Driven by a heavy-duty continuous metal chain loop running over a precision chain wheel, enabling easy ground-level operation even for elevated film positions.

Core Engineering Features & Highlights

• Precision Internal Self-Locking Gear Transmission Built with a high-torque internal gear reduction system that allows users to roll up thick plastic films with minimal physical effort. The integrated automatic self-locking brake mechanism holds the film securely at any desired height without slipping or rolling back down under wind stress or film weight.

• Heavy-Duty Weather-Resistant Metal Casing Encased in a rugged, die-cast metallic housing finished with a vivid orange protective coating. This high-durability shell protects the internal gear components from moisture, UV radiation, dust, and mechanical impacts in harsh agricultural environments.

• Smooth Anti-Friction Guide Rollers The side crank model features smooth, white anti-friction guide wheels mounted on a sturdy steel bracket. These rollers glide effortlessly against the vertical guide pole, reducing wear on the winch body, eliminating jamming, and preventing premature abrasion on adjacent greenhouse plastic.

• Secure Bolt-Tightening Sleeve Connection Equipped with a reinforced 8cm mounting sleeve and heavy-duty fixing bolts with locking nuts. This ensures a tight, non-slip coupling directly onto standard greenhouse roll-up pipes, providing stable torque transfer along the full length of the film bar.

Dimensional Specifications (Hand-Crank Unit)

• Crank Arm Length: 22 cm

• Grip Handle Length: 10 cm

• Main Gearbox Body Length: 13 cm

• Pipe Connection Sleeve Length: 8 cm

Primary Applications

This manual film roll-up unit is ideal for:

• Greenhouse Sidewall Ventilation: Easy manual opening and closing of side vents for daily temperature adjustment.

• Roof & Peak Curtain Control: Smooth ground-level operation of top film curtains using the chain-hoist configuration.

• Poly Tunnels & Cold Frames: High-efficiency ventilation control for single-span and multi-span plastic film structures.