Name: HEC-3120 KV550 Power Motors
Brand: HEC (Helioshine)

Question 1

What is the maximum thrust of HEC-3120 KV550, and what applications is it suited for?

Accepted Answer

HEC-3120 KV550 delivers up to 2822g of maximum thrust per motor. Actual payload capacity depends on the number of arms on your frame, propeller pairing, and flight safety margin (we recommend keeping at least 30% throttle headroom). Contact the HEC technical team for help with motor selection.

Question 2

What operating voltage is recommended for HEC-3120 KV550?

Accepted Answer

HEC-3120 KV550 is recommended to run at 6~12S. When pairing with an ESC and battery, make sure both the voltage range and maximum current stay within safe operating limits to avoid overheating or damage.

Question 3

What does the KV rating of HEC-3120 KV550 mean?

Accepted Answer

KV rating is the motor's no-load RPM per volt (RPM/V). HEC-3120 KV550 has a KV rating of 550 — a higher value means faster RPM with relatively less torque, better suited to smaller propellers; a lower value suits larger propellers with lower RPM and higher torque.

Question 4

Is HEC-3120 KV550 made in Taiwan?

Accepted Answer

Yes. All HEC Power Motors are manufactured at our Tainan, Taiwan facility, certified to ISO 9001 and ISO 14001 quality and environmental management standards, with full technical specifications and after-sales support.

KV Rating	550
Operating Voltage	6~12S
Idle Current	1.63 A
Rated Current	25.73 A
Rated RPM	11451 RPM
Max Thrust	2822 g
Pole Configuration	12N14P
Shaft Diameter	5 mm

KV	Propeller	Throttle (%)	Voltage (V)	Current (A)	Thrust (g)	RPM	Power (W)	Efficiency (g/W)
550	GF 1050	30	25.20	1.36	247	3,917	34.4	7.2
		40	25.19	2.56	470	5,102	64.4	7.3
		50	25.19	4.46	769	6,273	112.3	6.8
		60	25.18	7.10	1,135	7,474	178.9	6.3
		70	25.18	10.70	1,510	8,538	269.4	5.6
		80	25.17	14.73	1,929	9,555	370.8	5.2
		90	25.16	19.97	2,364	10,568	502.5	4.7
		100	25.15	25.73	2,822	11,451	647.0	4.4

H-3120 KV550

Engineering Drawing

Performance Curve Chart

Load Test Data