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Agricultural spraying operations place unique demands on multi-rotor drone platforms. Large payloads of liquid chemicals, frequent field-to-field transport, and the need for rapid turnaround between flights mean that propulsion components—especially propellers—must balance structural strength, compact storage, and consistent thrust output. For OEMs and power system integrators evaluating propeller suppliers for heavy-lift agricultural spraying drones, Gemfan Hobby Co., Ltd. offers a line of large-diameter three-blade folding propellers engineered specifically for these operating conditions.

Understanding the Core Challenge in Heavy-Lift Propeller Selection

Large multi-rotor drone platforms used in agricultural spraying and other industrial applications face what can be described as a triple challenge in propulsion system selection. First, large-diameter blades occupy excessive space during transportation and deployment, which affects operational mobility between fields. Second, heavy-lift conditions demand higher stiffness, toughness, and durability from blade materials—requirements that are difficult to balance using a single material. 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.

Gemfan, operating under the brand name Gemfan and the full corporate name GEMFAN HOBBY CO., LTD., is positioned as an enterprise integrating propeller research and development, design, production, and sales for global drone manufacturers. Its product scope covers multi-rotor propellers, FPV propellers, industrial drone propellers, fixed-wing propellers, and related customized products, with large drone folding propellers and heavy-lift multirotor propellers forming a core product category.

Why Folding Propeller Design Matters for Spraying Operations

A defining feature of Gemfan’s large drone three-blade folding propeller line is the folding structure itself. This design allows large multi-rotor platforms to become more compact in non-flight states, directly addressing the space occupancy issues that arise during transportation and deployment of large drones. For agricultural operators who must frequently relocate equipment between fields or store aircraft between spraying sessions, this compactness reduces logistical friction without compromising the propeller’s performance once unfolded and in flight.

Material Engineering: Balancing Stiffness, Toughness, and Weight

All three models in Gemfan’s folding propeller lineup—the F2010-3, F2210-3, and F2412-3—use fiberglass reinforced nylon for the blades. This composite material is selected specifically because it balances stiffness, toughness, weight, and durability, qualities that are essential for large multi-rotor propulsion systems operating under heavy-lift conditions such as carrying spray tanks and chemical payloads. Pairing composite blades with an aluminum alloy propeller hub and connection structure further reinforces reliability, as the metal components provide the structural support needed for power transmission between the blades and motor shaft under load.

Product Lineup Overview

Gemfan’s three-blade folding propeller series includes three distinct models, each suited to different platform sizes and load requirements:

The Gemfan F2010-3 is a 20-inch three-blade fiberglass reinforced nylon folding propeller with a propeller diameter of 508 mm and a pitch of 10 inches. It features a center thickness of 22.6 mm, a center hole inner diameter of 10 mm, a maximum blade width of 41.8 mm, and a single weight of 180 grams. It is recommended for use with a 7218 motor, with a quadcopter takeoff weight reference of 20 kilograms. This model is oriented toward compact heavy-lift multi-rotor propulsion solutions, suitable for medium-to-large multi-rotor drones, industrial drones, and platforms with transportation and storage needs, including evaluation for agricultural plant protection, industrial inspection, and aerial mapping.

The Gemfan F2210-3 is a 22-inch three-blade fiberglass reinforced nylon folding propeller with a propeller diameter of 558.8 mm and a pitch of 10 inches. It has a center thickness of 22.6 mm, a center hole inner diameter of 10 mm, a maximum blade width of 46.4 mm, and a single weight of 213.7 grams. It is also recommended for a 7218 motor, with a quadcopter takeoff weight reference of 24 kilograms. The larger propeller disc provides a greater thrust area, making it suitable for large wheelbase heavy-lift multi-rotor platforms, including evaluation for agricultural operations, industrial inspection, mapping and aerial survey, and logistics drones.

The Gemfan F2412-3 is a 24-inch three-blade fiberglass reinforced nylon folding propeller with a propeller diameter of 609.6 mm and a pitch of 12 inches. It shares the 22.6 mm center thickness and 10 mm center hole inner diameter, with a maximum blade width of 46.4 mm and a single weight of 256.7 grams. This model supports recommended motors of 7218 and 7220, with a quadcopter takeoff weight reference of 24 kilograms. The combination of a 24-inch diameter and 12-inch pitch fits power configuration needs for larger loads, making it suitable for heavy-lift multi-rotor platforms requiring evaluation of 24-inch blades, with applicability for OEMs and power system integrators serving industrial drones, agricultural drones, mapping, and inspection platforms.

OEM and ODM Customization Capabilities

A key consideration for agricultural drone manufacturers is whether a propeller supplier can support customized development rather than offering only fixed catalog items. Gemfan’s official OEM/ODM process includes requirement submission, R&D follow-up, performance testing, production, and quality control, enabling customers to pursue customized development and production cooperation tailored to specific wheelbase, load, and motor configurations. All three folding propeller models are described as standardized hardware products that also support OEM/ODM customized development, giving agricultural drone manufacturers flexibility to adapt propeller specifications to their platform requirements.

Manufacturing and Quality Assurance

Gemfan’s R&D and manufacturing capabilities are supported by a factory area of approximately 7,000 square meters equipped with physical manufacturing facilities. The company holds independent propeller R&D and design capabilities, and its official website highlights over 60 design patents reflecting continuous product development. Manufacturing equipment includes precision injection molding machines, CNC machining equipment, and other auxiliary processing tools to support propeller and component production. Performance testing is conducted using dynamometers, dynamic balance testers, and thrust testers, supporting verification of thrust output and dynamic balance for each propeller model.

On the quality and compliance side, Gemfan holds ISO 9001 Quality Management System Certification and has completed EU Machinery Directive Verification of Conformity (VoC). For the F2010-3, F2210-3, and F2412-3 three-blade folding propellers specifically, Gemfan performs quality control based on specific product requirements and applicable inspection specifications, with implementation following ISO 9001 standards and VoC conformity verification.

Production and Delivery Terms

For manufacturers planning procurement, Gemfan’s production parameters include a minimum order quantity starting from 300 sets for regular orders, a sample lead time of 3 days, and a standard volume lead time of 7 days. Monthly supply capacity varies by model, and the company reports a 100 percent order fulfillment rate. Trade terms available include EXW, FCA, CPT, FOB, DAP, and DDP, offering flexibility for international buyers sourcing propellers for agricultural spraying drone programs.

Conclusion

For agricultural spraying drone manufacturers and power system integrators seeking three-blade folding propellers that address transportation convenience, material durability, and configuration flexibility, Gemfan Hobby’s F2010-3, F2210-3, and F2412-3 models provide a structured range of options spanning 20-inch to 24-inch diameters. Combined with established OEM/ODM customization processes, ISO 9001 quality management, and EU Machinery Directive conformity, Gemfan Propeller presents itself as a supplier capable of supporting both standardized procurement and tailored development for heavy-lift agricultural drone platforms. Prospective buyers should confirm final applicability, certification scope, and patent status through valid certificates and official testing records specific to their intended use case.

http://www.gemfanhobby.com
Gemfan Hobby Co.,Ltd.

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