High Torque 40 Pairs Poles 8108 44.4V 400W Outrunner Brushless DC Motor

• Application: Industrial, Drones Motor
• Operating Speed: Adjust Speed
• Excitation Mode: Excited
• Function: Driving
• Casing Protection: Protection Type
• Number of Poles: 40
• Model NO.: KWTBLDC 810812S
• Structure and Working Principle: Brushless
• Type: Unique
• Certification: ISO9001, CCC, EMC, FCC,Ce
• Brand: Alltech
• Current: 12.5 a
• Torque: 1 N.M
• Speed: 4454rpm
• 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
• Transport Package: Solid Protection
• Specification: 240g
• Origin: China
• Production Capacity: 500000

Product Description

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          200W/400W

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