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T-MOTOR HEP-L 21*7 carbon fiber propellerT-MOTOR HEP-L 21*7 carbon fiber propeller

HEP-L 21*7

The T-MOTOR HEP-L 21*7 is an ultralight carbon fiber multirotor propeller for long-endurance UAVs. Its one-piece straight construction combines a resin-based carbon fiber composite with a PMI foam core. A flange mount, matte finish, molded QR identification and protective packaging complement its 21-inch diameter and 7-inch pitch.

T-MOTORDrone motor
Material
Resin-based carbon fiber composite + PMI foam core

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Product overview

The T-MOTOR HEP-L 21*7 is a one-piece straight propeller for long-endurance multirotor UAVs. Its 21-inch (537.4mm) diameter and 7-inch (177.8mm) pitch are paired with an average single blade weight of 32g. Construction combines a resin-based carbon fiber composite with a PMI foam core and a matte finish. High-toughness resin, surface fiber reinforcement and a damage-tolerant design help limit micro-damage propagation, while an integrated molded QR code supports traceability. Protective packaging helps safeguard the propeller during transport.

The flange mount has a Ø6mm center hole, a Ø12mm bolt circle and two Ø3mm mounting holes. Recommended combinations are MN6007 II KV160 + FLAME 60A at 12S and MN6007 II KV320 + FLAME 60A at 6S. With either corresponding motor and voltage configuration, the recommended quadcopter takeoff weight is 7kg. Recommended maximum speed is 6800 RPM and recommended maximum thrust is 10kg, with limits of 7650 RPM and 13kg respectively.

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Specifications

SpecificationValue & conditions
Diameter21 inches (537.4mm)
Common thrust range1.1~2.4 kg
Pitch7 inches (177.8mm)
Common speed range2680~3800 RPM
Average single blade weight32 g
MaterialResin-based carbon fiber composite + PMI foam core
Recommended maximum RPM6800 RPM
Surface treatmentMatte
Recommended maximum thrust10 kg
Propeller typeOne-piece straight propeller
Limit RPM7650 RPM
ApplicationLong-endurance multirotor UAV
Limit thrust13 kg
Connections and dimensionsFlange mount, Ø6mm center hole, Ø12mm bolt circle, with 2 × Ø3mm mounting holes
Recommended RPM range2650~3700 RPM
Recommended thrust range1.2~2.3 kg
Recommended takeoff weight7kgMN6007 II KV160 motor; 12S recommended voltage; quadcopter configuration.
Recommended takeoff weight7kgMN6007 II KV320 motor; 6S recommended voltage; quadcopter configuration.
Recommended combinationMN6007 II KV160 + FLAME 60A12S configuration.
Recommended combinationMN6007 II KV320 + FLAME 60A6S configuration.
Structural reinforcementHigh-toughness resin, surface fiber reinforcement and a damage-tolerant design limit micro-damage propagation.
Identification and packagingIntegrated molded QR code and protective packaging

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