Stepper Motors with 29 Inch Carbon Fiber Propellers for Uav

• Customization: Available
• Application: Industrial, Drones Motor
• Operating Speed: Adjust Speed
• Model NO.: BLDC 8108
• Excitation Mode: Excited
• Function: Driving
• Casing Protection: Protection Type
• Number of Poles: 40
• Structure and Working Principle: Brushless
• Type: Unique
• Certification: ISO9001, CCC, EMC, FCC,Ce
• Brand: Alltech
• Current: 12.5 a
• Torque: 1n.M
• Speed: 4454 Rpm
• Max.Efficiency: 89.20%
• Termianal Resistance(MΩ): 260
• Torque Constant: 915 G.Cm/a
• Kv: 106 Rpm/V
• Speed/Torque Constant: 0.02 Rpm/G.Cm
• Customized: Okay
• Material: Carbon Fiber+Epoxy
• Transport Package: Solid Protection
• Specification: 240g
• Origin: China
• Production Capacity: 500000

Product Description

29 Inch Straight Propeller Basic Specifications
Diameter/Pitch(L*W)	29*2.75 inch (735*70mm)	Work Temp	-40ºC~65ºC
Weight(single propeller*2)	83g*2	Storage Temp	-10ºC~50ºC
Material	Carbon fiber+Epoxy	Storage Humidity	<85%
Surface Treatment	Glossy	Optimum RPM	2619 RPM/Min
Propeller Type	Unfoldable,light weight	Thrust Limitation	25kg

BLDC Motor Features

1. 40 pairs of poles hi-torque motor design; Precision engineered for maximum energy conversion; Precision balanced rotor, smoothness for best reliability and maximum RPM
2. Multiple protection features: Low voltage cut-off protection, over-heat protection, throttle signal loss protection
3. Long stable performance: No error time lasts long for 2700 hours at 24V voltage and 60A current working conditions.
4. Satisfy National armed force standard, EMC, FCC,CE and so on.
5. Suitable for industrial and specialized drones( Multi-rotor, fixed wings drones)
6. Shaft: High hardness, long lifespan( Special stainless steel)
7. Housing: 7075 series aerial professional high hardness aluminum alloy, more expensive than the 6000 series with low alloy hardness and the screw  easy to loose.
8. Magnet: special permanent magnet with good performance and  unique heat resistance.
9. Coil: High purity copper windings maximizes efficiency; Imported from Japan with good performance, high heat resistance; Adopt vertical varnish technology to make the wire thickness even;
10. Bering: Imported(Not-refurbished)
11. Iron core: Imported, unique silicon steel sheet. 

KWT-BLDC81 Series         Φ105×29.5          250W/500W

Motor Parameter						KWTBLDC	KWTBLDC
	Motor Model					81106S	811012S
Values at nominal voltage
		1		Rated voltage	V	22.2	44.4
		2		No load speed	rpm	3827	4686
Free Load		3		No load current	A	0.93	0.65
		4		Max.efficiency	%	87.30%	89.20%
		5		Speed	rpm	3613	4454
At Max.		6		Current	A	15.7	12.5
Efficiency		7		Torque	N.m	0.80	1
		8		Max.output	W	1437	2632
		9		Speed	rpm	1914	2343
At Max.		10		Current	A	133	120
Output		11		Torque	N.m	7.2	10.7
		12		Stall current	A	264	240
At Stall		13		Stall torque	N.m	14	21.5
Motor characteristic
14	Termianal resistance				mΩ	120	260
15	Torque constant				g.cm/A	556	915
16	KV				rpm/V	173	106
17	/Speed/Torque constant				rpm/g.cm	0.03	0.02

Motor characteristic
	Thermal parameters
18	Ambient temperature				-20~+55	ºC
19					180	ºC
	Max.permissible winding temperature
	Mechanical parameters
20					20000	rpm
	Max.permissible No-load  speed
21	()				100	N
	Max.axial load(dynamic)
	Other parameters
22	Number of pole pairs				40
23					3
	Phase No.
24	Weight of motor				240	g