The ETR251/46 equipment rack drive is a low-maintenance, purpose-designed drive 
for starting and closing swinging-environment vents in Venlo-type greenhouses. The combination of TR251/46 gear rack drive and aEP RW electric motor gearbox plays a part in an optimum greenhouse climate because of accurate positioning of the atmosphere vents.
The self-supporting TR251/46 equipment rack drive comprises a zinc-plated C-profile with a built-in compact equipment rack drive unit. The TR251/46 equipment rack drive is installed to a greenhouse gutter using the item clamp-mounting forks or bows.
Thanks to the gear reduction stage (i-2.76) and the pinion of the TR251/46 equipment rack drive, the drive torque is effectively converted into a maximum rack force of 4200 N. Track rollers in the C-profile and guidebook blocks ensure stable expansion and retraction of the rack. The drive planetary gearbox shafts of the TR251/46 gear rack drive have lengthy, flat-sided journals. This can help you suit drive shafts (prefab) fitted with weld/sleeve couplings or chain couplings, after the house units have been mounted. The drive shafts are locked in the couplings by the accompanying shaft retaining clips. The TR251/46 gear rack drive is easy to maintain.
A ETR251/46 gear rack drive with other C-profile lengths and rack lengths is on request.