In the field of unmanned delivery, small robots are facing an ultimate game of “space and power”. When delivery robots need to cross narrow office corridors, when cleaning robots need to crawl into furniture bottoms to complete cleaning, and when warehouse AGVs need to shuttle precisely through shelf gaps – how to fit a stronger power system into a limited body without sacrificing load-bearing capacity? ZLTECH has provided a disruptive answer with an external rotor motor hub motor.
Traditional dilemma: Power system becomes “space killer”.
Traditional small robots often adopt a driving scheme of central DC motor and reducer, which has three major drawbacks:
1. Bulky size: The motor, gearbox, and encoder are arranged separately, occupying more than 30% of the body space;
2. Transmission loss: Gear meshing causes 15% -20% energy loss, directly weakening the load-bearing capacity;
3. Complex maintenance: Gear wear requires regular replacement, which becomes a pain point for operation and maintenance in unmanned scenarios.
ZLTECH Solution: Integrated Design of Outer Rotor and Wheel Hub Motor
The outer rotor motor wheel hub motor developed by ZLTECH, breaks the physical limit through three major innovations:
1. Space folding technique: The power system is “hidden” in the wheel hub. Traditional motors require reserved installation space for the transmission shaft inside the body, while ZLTECH adopts an outer rotor structure, with the stator fixed on the inside of the wheel hub, and the rotor directly drives the tire to rotate. This “motor wheel” design reduces the volume of the drive system by 50% compared to traditional solutions.
2. Torque amplifier: Direct drive technology without gearbox
By optimizing the electromagnetic field distribution and permanent magnet materials, ZLTECH hub Motors achieved a peak torque of 25N.m within a 120mm diameter wheel hub motor, which is sufficient to drive a 50kg robot to climb a 15° slope. More importantly, the direct drive mode eliminates gear transmission losses and improves system efficiency to 92%, an increase of 18 percentage points compared to traditional solutions – this means that the robot can carry an additional 10kg of cargo with the same battery capacity.
The future is here: when motors become the “digital joints” of robots.
ZLTECH’s ambition goes beyond power optimization. It is like a technology pioneer with great dreams, constantly breaking through the boundaries of traditional motors with fearless courage and innovative wisdom. Injecting cutting-edge technologies such as intelligent perception, precise control, and efficient communication into the motor, transforming it from an “execution unit” that only knows how to work hard, to an “intelligent joint” with sharp “senses” and intelligent “brain”. The evolution of motors from “execution units” to “intelligent joints” means that the future of unmanned delivery is full of infinite possibilities.
On the trillion dollar track of unmanned delivery, every evolution of power systems is reshaping the industry landscape. ZLTECH has used an external rotor motor wheel hub motor, which not only solves the long-standing paradox of “power space”, but also promotes the entire industry to leap towards a more efficient and intelligent direction. When robots begin to freely shuttle through the capillaries of cities, this quiet power revolution may be the starting point of future urban life.
Post time: Jul-22-2025