Product overview
The Gemfan 1270-3 is a propulsion component for heavy-lift cinematography drones, industrial surveying and mapping aircraft, and heavy payload delivery platforms. Its three-blade architecture combines a 12.0 inch (304.8 mm) diameter with a 7.0 inch pitch. Glass fiber nylon provides the structural material, while the high lift-to-drag ratio airfoil is intended to improve flight efficiency and payload capability. The construction is designed to limit blade flex under heavy loads and support consistent power delivery.
For installation planning, each propeller weighs 33.4 g and has a 10.8 mm thick hub, a maximum blade width of 26.4 mm, and a 6 mm shaft hole with an adapter ring. Gemfan recommends a 4218-540KV motor; the reinforced hub and wide blades are designed around the torque demands of large motors of this type. The supplied pack contains one clockwise and one counterclockwise propeller, making this a paired propeller purchase for integration into an aircraft propulsion system.
