Procurement teams evaluating propulsion components for heavy-lift delivery drone programs face a recurring set of constraints: large-diameter blades that are difficult to transport, materials that must simultaneously withstand stiffness and toughness demands, and a limited pool of standardized folding propeller options that match varying wheelbases, loads, and motor configurations. GEMFAN HOBBY CO., LTD., operating under the Gemfan brand, addresses these constraints through a dedicated line of large-diameter three-blade folding propellers built specifically for industrial-grade and heavy-lift multi-rotor platforms.
The Procurement Challenge for Heavy-Lift Delivery Drone Propulsion
Large multi-rotor drone platforms used in delivery, logistics, and industrial operations must balance three competing requirements at once. First, large-diameter blades occupy excessive space during transportation and deployment, which affects operational mobility in field conditions. Second, heavy-lift operating conditions demand higher stiffness, toughness, and durability from blade materials — qualities that are difficult to balance within a single material choice. Third, OEMs and power system integrators need propeller options that match different wheelbases, loads, and motor configurations, yet standardized large-diameter folding propeller specifications available on the market remain limited. These three pain points form the baseline against which any propulsion supplier should be evaluated.
Gemfan’s Engineering Response: Three-Blade Folding Propellers
Gemfan’s product matrix for this segment consists of three models — the F2010-3, F2210-3, and F2412-3 — all built as three-blade fiberglass reinforced nylon folding propellers with an aluminum alloy propeller hub and connection structure. Each model is a standardized hardware product that also supports OEM/ODM customized development, allowing procurement specialists to start from a proven baseline and adjust specifications to their platform’s requirements.
F2010-3 — Compact Power for 20 kg Platforms
The F2010-3 is a 20-inch (508 mm diameter) three-blade folding propeller with a 10-inch pitch. It uses fiberglass reinforced nylon blades and an aluminum alloy hub connection structure, finished in black. The center thickness measures 22.6 mm, with a center hole inner diameter of 10 mm and a maximum blade width of 41.8 mm. Single-unit weight is 180 g. The recommended motor is the 7218, with a quadcopter takeoff weight reference of 20 kg. This configuration is positioned for compact heavy-lift multi-rotor propulsion solutions, balancing propulsion needs with transportation and storage convenience. Its folding structure allows the vehicle to become more compact in non-flight states, which directly addresses deployment and transport constraints common to medium-to-large multi-rotor drones and industrial drone platforms, including those evaluated for agricultural plant protection, industrial inspection, and aerial mapping. Actual applicability should still be confirmed through total vehicle load and power tests.
F2210-3 — Scaling Up for Logistics and Heavy Loads
The F2210-3 steps up to a 22-inch (558.8 mm) diameter with the same 10-inch pitch and three-blade folding design. Blade material remains fiberglass reinforced nylon, paired with the same aluminum alloy hub connection structure. Center thickness is 22.6 mm, center hole inner diameter is 10 mm, and maximum blade width increases to 46.4 mm. Single-unit weight is 213.7 g, with a recommended motor of 7218 and a quadcopter takeoff weight reference of 24 kg. The larger propeller disc area is intended to provide sufficient thrust for large wheelbase heavy-lift multi-rotor platforms while the folding structure keeps the vehicle compact for frequent site-transfer operations — a direct response to delivery and logistics drone requirements where repeated transport between locations is routine. This model can be evaluated for agricultural operations, industrial inspection, mapping and aerial survey, and logistics drones.
F2412-3 — Maximum Diameter for Highest Lift Requirements
The F2412-3 extends further to a 24-inch (609.6 mm) diameter with a 12-inch pitch, the highest combination within the three-model range. It retains the three-blade folding structure, fiberglass reinforced nylon blades, and aluminum alloy hub connection, with a center thickness of 22.6 mm, center hole inner diameter of 10 mm, and maximum blade width of 46.4 mm. Single-unit weight is 256.7 g. Recommended motors expand to 7218 and 7220, with a quadcopter takeoff weight reference of 24 kg. The combined increase in diameter and pitch is intended to fit power configuration needs for larger loads, while the folding structure continues to reduce space occupancy for the largest blades in non-flight states. This model is positioned for heavy-lift multi-rotor platforms requiring 24-inch blade evaluation, with relevance to OEMs and power system integrators serving industrial drones, agricultural drones, mapping, and inspection platforms.
Aluminum Alloy Hub: The Core of Reliable Power Transmission
Across all three models, the aluminum alloy propeller hub and connection structure is a consistent engineering choice. For the F2010-3, this metal connection structure provides structural support for power transmission. For the F2210-3, it supports the operation of large-diameter blades under load conditions and ensures a solid connection between the blade and motor shaft, addressing installation and transmission reliability for large-diameter blades. For the F2412-3, the aluminum alloy hub supports power transmission under high-pitch, high-load conditions. In each case, the metal hub works alongside the fiberglass reinforced nylon blades, which balance stiffness, toughness, and weight, to form a composite-and-metal structure suited to heavy-lift propulsion demands.
Manufacturing Capability and Quality Assurance
GEMFAN HOBBY CO., LTD. integrates R&D, design, production, and sales, with a factory area of approximately 7,000 square meters. The company’s manufacturing equipment includes precision injection molding machines and CNC machining equipment, supported by dynamometers, dynamic balance testers, and thrust testers for performance verification. The official website highlights 60+ design patents. Quality processes reference ISO 9001 Quality Management System Certification and EU Machinery Directive Verification of Conformity (VoC). For procurement planning, regular orders start from a minimum order quantity of 300 sets, with a sample lead time of 3 days and a standard volume lead time of 7 days. Order fulfillment rate is cited at 100%, and trade terms include EXW, FCA, CPT, FOB, DAP, and DDP.
OEM/ODM Customization and Procurement Terms
Beyond the three standardized models, Gemfan supports a customization process covering requirement submission, R&D follow-up, performance testing, and production through to quality control. This allows procurement specialists working on delivery drone programs with specific wheelbase, load, or motor requirements to pursue tailored propeller development rather than being limited strictly to catalog specifications. Relevant certification scope, certificate validity, patent status, and specific product testing should be confirmed against valid certificates, patent documents, and official testing records.
For procurement teams sourcing heavy-lift delivery drone propellers that require aluminum alloy hubs for reliable power transmission, the F2010-3, F2210-3, and F2412-3 line from Gemfan Propeller offers a graduated set of folding propeller options — 20-inch, 22-inch, and 24-inch diameters respectively — each pairing fiberglass reinforced nylon blades with an aluminum alloy connection structure, backed by documented manufacturing capability and OEM/ODM support for further customization.
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