Roof Ventilations
Rack-and-pinion ventilation systems use a positive connection between pinion and rack to open and close the vent panels with precision. This technology ensures controlled, uniform movement and provides reliable ventilation under a wide range of operating conditions.
The available components are made from durable, corrosion-protected materials and are designed for long-term use in greenhouses. Racks, pinions, bearings and matching drive elements ensure stable force transmission and smooth guidance of the vent panels, even under high loads and changing climate conditions.
Tubes & Accessories
Drive Systems
Wire Ropes & Accessories
Insect Protection
Diabolo roll 27.32
The clip profile protects cloth overhangs in shading systems in greenhouses.It is clipped directly onto the tensioned coated cable to prevent screens rubbing against the wire.Material: PVC
Pinion house unit for rack Ridder TU11-30 - PU = 25 pcs
Application: Drive unit for 30 mm rack systems in greenhouse ventilation Material: Steel housing with centered bronze sintered bearing Design: Counter rollers for smooth and low-wear rack guidance Compatibility: For 30-3 racks and 34 mm steel drive tubes Use case: Suitable for systems under high mechanical load Packaging unit: 25 pieces Ridder Article No.: 500030 The Pinion Housing TU11-30 is a robust drive unit for 30 mm rack systems in professional greenhouse ventilation. Its bronze sintered bearing and integrated counter rollers ensure long-lasting, low-friction operation even under heavy loads.
Window connector for TU11-22 +TU11-30PU = 10 pcs
Application: Fixes racks to ventilation flaps in greenhouse roof systems Material: Aluminum pressure-casting Mounting: Includes Inox M6 bolt for rack fixation - 2 additional M6 bolts needed for flap mounting (not included) Compatibility: TU11-22 and TU11-30 pinion housings Packaging unit: 10 pieces Ridder Article No.: 500021 The Window Connector for TU11-22 and TU11-30 securely attaches the rack to the ventilation flap. It ensures precise alignment and reliable operation in greenhouse roof ventilation systems. Made from durable aluminum die-cast for long-term use.
Snapper 1,5 - PU = 1000 pcs
Application: Fastening element for securing sub-roof film to greenhouse structural beams Material: Durable plastic for long-lasting use Packaging Unit: 1000 pcs Snapper 1.5 is a versatile connector specifically designed for attaching sub-roof film to greenhouse beams. Its sturdy plastic body ensures reliable and long-term performance in demanding outdoor conditions. With its easy-to-use design, Snapper 1.5 enables quick and secure installation, significantly improving the overall stability of the film attachment within greenhouse construction.
Pillow block 1" with bearing
The pillow block with a double-shell stamped metal bracket works as a support point for 34 mm drive shafts for ventilation- and shading-systems in greenhouses. The pillow block has mounting holes for M8 bolts.Thanks to its double-shell construction the ball bearing within the bracket can be replaced, if needed. The product can be delivered with a usual ball bearing SB 207 (24000101) or with a ball bearing with a longer inner ring UB 207 (24000101).Material: Galvanized steel (housing & bearing)
Rack 30-3\792 mm \ Ridder TU11-30
Application: Standard ventilation systems in all types of greenhouses Material: Galvanized steel sheet Length: 792 mm Design: Straight, with toothless end for safety stop Compatibility: Precisely matched to pinion housing TU 11:30 Tooth height: 30 mm Ridder Article No.: 418546 The Rack 30-3 / L792 mm is designed for use in greenhouse ventilation systems. It features a toothless end for a secure stop and is supplied with integrated run-out protection (UV=77) as standard. Custom lengths available on request.
Pinion house unit for rack Ridder TU11-22 - PU = 25 pcs
Application: Drive unit for 22 mm rack systems in greenhouse ventilation Material: Steel housing with centered bronze sintered bearing Design: Counter rollers for smooth and durable rack guidance Compatibility: For 22-3 racks and 34 mm steel drive tubes Use case: Suitable for systems under higher mechanical load Packaging unit: 25 pieces Ridder Article No.: 500010 The Pinion Housing TU11-22 is a robust drive unit for 22 mm rack systems. Its bronze sintered bearing and counter rollers ensure long-lasting, low-wear operation even under high loads. Ideal for professional greenhouse ventilation systems.
Slide bearing plate B1"
The support plate works as a bearing for 34 mm drive shafts in greenhouses. It is equipped with straight mounting holes. Thanks to built -in slide bearing, which is constructed with a centred bronze ring, this support plate is very durable and suitable for applications under heavy weights. In addition this slide bearing functions as a substitute for grease. Material: Galvanized steelMounting height: Lower edge to middle of drive shaft 62 mmRidder Art.-Nr.: 503086
Alu-Support plate 40
Application: Support plate for fastening drive shafts in shading systems Material: Aluminum for high stability and corrosion resistance Mounting: Angled shape ensures secure attachment to structural elements Height: Center of pipe: 40 mm Special feature: Lightweight design for easy installation The Angled Aluminum Support Plate 1″ offers a reliable solution for mounting drive shafts in greenhouse shading systems. Its angled shape ensures a stable and secure installation. The high-grade aluminum provides excellent resistance to environmental conditions and long service life. Ideal for professional greenhouse applications, it enhances the efficiency and durability of shading structures.
Rack 22-3 \ Ridder TU11-22
This rack is especially suitable for light-weight ventilation in poly tunnels and -greenhouses. The end piece of the rack has no teeth. This enables a security stop as soon as the ventilation as the vent has opened to the maximum. It also stops the rack from getting pushed out. The rack is precisely fitted to the pinion housing TU 11:22 & 30 and therefore very durable. The product can be delivered in several lengths. Height of the teeth: 22 mmMaterial: galvanized steelRidder Art.-Nr.: 417574
Pinion house unit for rack Ridder TU6-22
Application: Drive unit for 22 mm rack systems in greenhouse ventilation Material: Steel housing with plastic bearing ring Design: Counter rollers for smooth and gentle rack guidance Compatibility: For 22-3 racks and 34 mm steel drive tubes Use case: Ideal for lightweight ventilation systems Ridder Article No.: 500019 The Pinion Housing TU6-22 is a compact drive unit for 22 mm rack systems. Its counter rollers ensure gentle rack guidance, reducing wear. The plastic bearing makes it ideal for simple, lightweight greenhouse ventilation applications.
Pinion house protection cover 2-parts - incl. bolts 42000418 (4x) - PU = 25 pcs
Application: Safety housing for racks in greenhouse ventilation systems Material: Housing: plastic - Tube: aluminum Design: Two-part shell with dual-sided receptacle for rack protection tubes Mounting: Secured with galvanized M4×16 steel screws (included) Packaging unit: 25 pieces Benefit: Prevents injury and contamination from lubricants - compatible with insect netting The Pinion Housing Protection – 2-Part Shells is used in combination with rack protection tubes to shield racks at sensitive points in greenhouses. It prevents contact with moving parts and supports insect-free greenhouse designs. The housing is made of durable plastic and includes mounting screws.
Grease waterproof 400 g - PU = 24 pcs
Application area: Professional rack grease for treating racks in greenhouse ventilation and shading systems Usage: Annual maintenance with this grease ensures long-term, smooth operation of rack drives Application method: Can be applied to the racks using a brush Packaging: Supplied in a cartridge suitable for 400 g grease guns Packaging unit: 24 cartridges Rack grease 400 g is specially developed for maintaining racks in greenhouse systems. It provides optimal lubrication and extends the service life of rack drives. Thanks to its easy brush-on application, the grease can be distributed evenly across the rack surface. This product is ideal for professional use and helps maintain the efficiency and reliability of ventilation and shading systems.
Steel tube galv narrowed
This steel tube is particular stable. It is used as a push-pull-tube for shading- and ventilation systems in greenhouses. The tubes can be easily connected by inserting them into each other through their swaged ends and bolting them afterwards. Bolt and nut 27.32 for steel tubes are needed.Diameter: 32 mm Wall thickness: 1.5 mm Length: 6500 mm Material: Galvanized Steel
Swivel pulley 50
Swivel pulley made of high impact resistant plastic with one rotatable and one fixed mounting eye. This model allows cable to go through the housing.This pulley has no ball bearing.
Bolted chain coupling for RW45 - tube
Application: Connects the chain wheel of RW45 gear motors to the drive shaft Tube size: 1″ Material: Galvanized steel Mounting: Bolted design with pre-punched receptacle for easy installation Features: Duplex chain allows axial movement of the shaft for greater flexibility The Bolted chain coupling for RW45 – 1″ tube provides a flexible and secure connection between the gear motor and the drive shaft. Its bolted design simplifies installation compared to welding, and the duplex chain compensates for misalignment caused by structural movement.
Rack 30-3\L1948mm\ Ridder TU11-30 - curved outside toothing
Application: Ventilation systems in greenhouses with limited interior space Material: Galvanized steel sheet Length: 1948 mm Toothing: Curved, outside toothed End piece: Toothless for safety stop - rear square hole for optional bolt-on stop Compatibility: For pinion housing TU 11:30 Tooth height: 30 mm Ridder Article No.: 418512 The Rack 30-3 / L1948 mm – curved outside toothed is a long, curved rack for greenhouse ventilation systems. Its design reduces space intrusion while maintaining full functionality. Supplied with integrated run-out protection (UV=77) as standard.
Steel tube, galvanized 1"
This steel tube is used as a drive shaft in shading and ventilation systems in large greenhouses. Due to its wall thickness of 3.25 mm, it is very resistant against torsion. The tube connector halves within our product range are used to connect the tubes. Diameter: 33.5 mm Wall thickness: 3,25 mm Length: 6050 mm Material: Steel, galvanized
TRN 520-3S-H60
Application: Drive unit for rafter rail systems in greenhouse ventilation Material: Galvanized steel for strength and corrosion protection Installation height: 60 mm (from rack center to top of rafter) Mounting: M10 bolt and locknut connection Features: Hardened pinion, grease nipples, guiding blocks for precise rack alignment Weld shaft compatibility: Flat shaft ends for easy coupling Ridder Article No.: 540000 The TRN 520-3S-H60 pinion house unit offers a reliable and low-maintenance solution for greenhouse drive systems. Its increased height allows for flexible mounting, and it ensures smooth rack movement with minimal wear.
Diabolo-roll 27.32 with stamped metal housing
The diabolo roll set 1 serves as a guide for push tubes in shading systems with push-pull tube drives. Within this set the roll is built into an iron sheet housing.Material:Diabolo roll: PlasticHousing: Iron Sheet
Coupling unit PH40\B27x1.5\ST - to connect rack PH 40-3 with push-pull tube d. 27 mm
Ridder "connector set" for acks and push-pull tubes in shading systems.Suitable for 27 racks. Material: pressure casting galvanized - Ridder Art.-Nr.: 500208
Coupling plate for RackDrive 700 and TRN rack drives - Tube
Application: Coupling plate for mounting racks to drive tubes Material: Galvanized steel for high corrosion resistance Tube compatibility: Ø 27 mm or Ø 32 mm Rack compatibility: 30×16 mm or 30×20 mm racks (RackDrive 700 and TRN systems) Mounting: Bolt-and-nut connection Special feature: Rack centerline aligns precisely with tube centerline Ridder Article No.: 416489 The Coupling Plate Ridder is a robust mounting solution for attaching racks to drive tubes in RackDrive 700 and TRN systems. Its precise alignment and galvanized finish ensure long-lasting, corrosion-resistant performance in greenhouse environments.