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COMPONENT

LJ4120 KV560

By Yahree Aeropower Tech Co., Ltd. ↗

The Yahree Aeropower Tech Co., Ltd. LJ4120 KV560 is a fixed-wing propulsion motor with a 50 mm nominal diameter, 305 +/-15 g weight and recommended 6S power system. It supports integration with a recommended 14–15 inch propeller, with distinct continuous and 15-second electrical limits and optional OEM/ODM customization.

ProductLJ4120 KV560 fixed-wing motor
Motor diameter50 +/-0.10 mm560 version.
Motor length45 +/-0.5 mm560 version.
Slots and poles12N14P560 version.
Motor KV560 +/-5% RPM/V560 version.
Free-load current3.5 A maximumAt 20 V; 560 version.

Product overview

The Yahree Aeropower Tech Co., Ltd. LJ4120 KV560 is a propulsion motor for fixed-wing aircraft integration. Its 12N14P slot-and-pole arrangement fits within a body measuring 50 +/-0.10 mm in diameter and 45 +/-0.5 mm long, with a weight of 305 +/-15 g. The 560 +/-5% RPM/V version has recommendations for a 6S LiPo supply, a 6S / 100 A ESC and a 14–15 inch propeller. These are integration recommendations.

At 22.2 V, continuous operation is rated at a maximum of 57 A and 1265 W, with 88°C specified at maximum continuous current. The higher 80 A / 1776 W rating is limited to 15 seconds. Magnet operating temperature has a 150°C maximum and a recommended maximum of 120°C. Thrust depends on propeller, voltage and test conditions; the associated 15*8 propeller performance figures carry an LJ4130 motor designation, which limits their direct attribution to the LJ4120 KV560. OEM/ODM options cover custom KV, appearance and color.

Specifications

SpecificationValue & conditions
ProductLJ4120 KV560 fixed-wing motor
Motor diameter50 +/-0.10 mm560 version.
Motor length45 +/-0.5 mm560 version.
Slots and poles12N14P560 version.
Motor KV560 +/-5% RPM/V560 version.
Free-load current3.5 A maximumAt 20 V; 560 version.
Phase-to-phase resistance19.1 +/-7% mΩAt 25°C; 560 version.
Maximum continuous current and power57 A / 1265 WAt 22.2 V; 560 version.
Temperature88°CAt maximum continuous current; 560 version.
Maximum current and power80 A / 1776 WAt 22.2 V; 15 seconds maximum; 560 version.
Weight305 +/-15 g560 version.
Recommended LiPo cells6S560 version.
Recommended ESC6S / 100 A560 version.
Recommended propeller14–15 inch560 version.
Maximum magnet operating temperature150°C; recommended maximum 120°C560 version.
Motor torque constant198.02 g.cm/A560 version.
Motor constant0.2 rpm/g.cm560 version.
30% throttle performance
  • Voltage: 21.3 V;
  • thrust: 1520 g;
  • current: 8.3 A;
  • power: 176.79 W;
  • efficiency: 8.60 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 30% throttle.
40% throttle performance
  • Voltage: 21.3 V;
  • thrust: 2140 g;
  • current: 12.9 A;
  • power: 274.77 W;
  • efficiency: 7.79 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 40% throttle.
50% throttle performance
  • Voltage: 21.3 V;
  • thrust: 2680 g;
  • current: 18.7 A;
  • power: 398.31 W;
  • efficiency: 6.73 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 50% throttle.
60% throttle performance
  • Voltage: 21.2 V;
  • thrust: 3190 g;
  • current: 25.6 A;
  • power: 542.72 W;
  • efficiency: 5.88 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 60% throttle.
70% throttle performance
  • Voltage: 21.2 V;
  • thrust: 3710 g;
  • current: 33.8 A;
  • power: 716.56 W;
  • efficiency: 5.18 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 70% throttle.
80% throttle performance
  • Voltage: 21.2 V;
  • thrust: 4390 g;
  • current: 44.5 A;
  • power: 943.4 W;
  • efficiency: 4.65 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 80% throttle.
90% throttle performance
  • Voltage: 21.1 V;
  • thrust: 4660 g;
  • current: 57.1 A;
  • power: 1204.81 W;
  • efficiency: 3.87 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 90% throttle.
100% throttle performance
  • Voltage: 21 V;
  • thrust: 5490 g;
  • current: 73.9 A;
  • power: 1551.9 W;
  • efficiency: 3.54 g/W
Performance table identifies motor as LJ4130 with a 15*8 propeller; 100% throttle.
Customization optionsCustom KV, appearance and colorFor OEM/ODM projects.
Thrust performance qualificationThrust varies with propeller, voltage and test conditionsPropeller, voltage and test conditions affect thrust.

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