OBL9120 Series Outer Rotor Brushless Motor

AE9120

•Adopt multi-pole and multi-slot outer-rotor structure, direct drive, large torque, low noise；

•Using rare earth magnetic steel, small size, high power density, high efficiency；

•Stable operation, strong overload capacity；

Specifications

Input Voltage	40V DC
Dimensions(mm)	Φ99.5x80.5L
Shaft Diameter(mm)	Ф13
No Load Speed(rpm)	4300
No Load Current(A)	1.5
Nominal Speed(rpm)	3500
Nominal Torque(Nm)	3
Nominal Current(A)	33
Stall Torque(Nm)	16
Stall Current(A)	171
Maximum Output Power(W)	1840
Maximum Efficiency(%)	89.76
Weight（Typical）	200hrs
Weight(g)	1345
Operating Temperature Range(°C)	-10 to 70
Storage Temperature Range(°C)	-20 to 70

Performance Data

Outline Drawing

Performance Curves

Application

: Chain Saw Solution
Topband has independently developed a variety of home DIY and commercial models of chain saw external rotor motor program for home and professional gardeners to provide a more efficient and lightweight program options, the use of external rotor motor electric chain saws is also very practical and comfortable, because of less vibration and less noise.
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: Hedge Trimmer Solution
Hedge trimmer is a garden tool specialized in trimming hedges, shrubs, tea trees and other plants, widely used in parks, gardens, roadside hedges and tea gardens and other scenes. Hedge trimmer with its efficient and convenient characteristics, become an indispensable tool in modern garden and agricultural production, matching the right motor can significantly improve the working efficiency, while ensuring the quality of pruning.
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: Lawn Mower Solution
In recent years, with the increasing environmental awareness and technological advancements, the lawn mower market has shown a clear trend towards lithium-electrification, intelligence, and high efficiency. The growing consumer demand for eco-friendly, low-noise, and convenient tools has driven the transition of lawn mowers from traditional fuel-powered to electric and intelligent solutions. Moreover, breakthroughs in battery technology have continuously increased the market penetration rate of lithium-electric lawn mowers, making them the mainstream direction for future development.
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