Brushless DC Motor for Lawn Mowers and Robotic
Greensky Power is an OEM manufacturer of brushless DC motors for robotic, commercial and specialised mowers. Six catalogued models across 36, 42 and 57 mm frames — from 9 W geared wheel drives to 90 W direct-drive blade motors — and every model has a downloadable manufacturing datasheet.
Two roles, one platform
A mower needs two very different motors. Sorting by frame size is the wrong first step — sort by what the motor has to turn.
Drive wheel motors
- 34–65 rpm at the output, 2.5–5.4 N·m
- Planetary reduction 71:1 or 68:1
- 9–32 W, 18 V or 24 V
Pick this one if the motor turns a wheel.
Blade motors
- 3,520–4,500 rpm at the shaft, 0.15–0.19 N·m
- No gearbox — the blade mounts on the shaft
- 56–90 W, 18 V, 21 V or 24 V
Pick this one if the motor turns the blade.
The 42 mm wheel motor produces 5.4 N·m; the 57 mm blade motor produces 0.19 N·m — 1/28 of the torque at nearly 80× the speed. A bigger frame does not mean a stronger motor.
Our lawn mower motor series & applications
Explore our range of high torque lawn mower motors designed for specific functions within mowing equipment. All specifications can be customised — contact us for your specific drive motor requirements.
Two geared wheel motors at 71:1
9 W at 34.3 rpm and 17 W at 64.3 rpm, both 2.5 N·m — the compact end of the wheel-drive range.
One geared wheel motor at 68:1
32 W, 5.4 N·m at 56.7 rpm — the highest torque in the range, for heavier chassis and ramps.
Three direct-drive blade motors
56–90 W at 3,520–4,500 rpm. Mixed 8-pole and 10-pole versions in one family, selected by the controller.
Model comparison — all six catalogued motors
Rated points measured under the dedicated controller. Wheel motors are gearbox output values (71:1 or 68:1); blade motors are direct-drive shaft values with no gearbox.
Swipe the table horizontally to see every column →
| Model | Frame | Role | Voltage | Power | Rated speed | Rated torque | Rated current | Ratio | Mass |
|---|---|---|---|---|---|---|---|---|---|
| GSBLD36R9D18-36P71K | 36 mm | Wheel | 18 V (16–28) | 9 W | 34.3 rpm | 2.53 N·m | 1.19 A | 71:1 | 520 g |
| GSBLD36R17D24-36P71K | 36 mm | Wheel | 24 V (16–28) | 17 W | 64.3 rpm | 2.51 N·m | 1.62 A | 71:1 | 520 g |
| GSBLD42R32D24-42P68K | 42 mm | Wheel | 24 V (21–30) | 32 W | 56.7 rpm | 5.4 N·m | 2.3 A | 68:1 | 900 g |
| GSBLD57R56D18 | 57 mm | Blade | 18 V (15–21) | 56 W | 3,520 rpm | 0.15 N·m | 4.5 A | — | 613 g |
| GSBLD57R78D24 | 57 mm | Blade | 24 V (21–30) | 78 W | 4,100 rpm | 0.183 N·m | 5.2 A | — | 490 g |
| GSBLD57R90D21 | 57 mm | Blade | 21 V (18–24) | 90 W | 4,500 rpm | 0.192 N·m | 5.6 A | — | 490 g |
Insulation class F on all six. Values above the rated point are short-time only — see the thermal section in each datasheet.
Download the full specification for each motor
Six files, current released revision (A01). Each includes rated and no-load points, winding resistance, inductance, outline drawing, wire sequence and the measured output curve.
Drive wheel motors
Geared 71:1 and 68:1 · 34–65 rpm output · 2.5–5.4 N·mGSBLD36R9D18-36P71K
Wheel drive, 18 V class
GSBLD36R17D24-36P71K
Wheel drive, 24 V class
GSBLD42R32D24-42P68K
Wheel drive, higher torque
Blade motors
Direct drive · 3,520–4,500 rpm · 56–90 WGSBLD57R56D18
Blade drive, 18 V class
GSBLD57R78D24
Blade drive, 24 V class
GSBLD57R90D21
Blade drive, 21 V class
Need a different ratio, cable length or connector? The six models above are catalogued; anything else is quoted to order — send us the duty point.
Which motor for which job
Two roles have catalogued models with released datasheets; the other two are configurations quoted to order.
Swipe the table horizontally →
| Motor role | What it does | Voltage | Catalogued output | Catalogued torque | Datasheet |
|---|---|---|---|---|---|
| Drive wheel (traction) | propels the mower | 18 V / 24 V | 9–32 W | 2.5–5.4 N·m | 3 models |
| Blade / cutting deck | spins the blade | 18 / 21 / 24 V | 56–90 W | 0.15–0.19 N·m | 3 models |
| Height adjustment | sets cutting height | 12 V / 24 V | on request | 0.5–3 N·m (platform) | — |
| All-in-one drive + cut | integrated hub | 18 / 24 / 36 V | on request | 3–10 N·m (platform) | — |
Rows marked on request describe configurations quoted to order; released datasheets exist for the six catalogued models above.
Tailored motor solutions for every mowing scenario
Robotic lawn mowers for residential use
With the smart home trend, demand for quiet, efficient and autonomous brushless motors for robotic lawn mowers is surging. Our low-noise, high-efficiency motors balance runtime and cutting power for backyard maintenance. Robotic mowers sold into the EU are designed against IEC 60335-2-107, which covers battery-powered robotic rotary mowers up to 75 V DC — the 18 V, 21 V and 24 V platforms on this page sit well inside that ceiling.
Commercial robotic mowers for large areas
Scalable solutions for parks, corporate campuses and large estates. Motors feature enhanced durability, connectivity for fleet management and weatherproofing.
Golf course lawn mowers
Precision motors that deliver a consistent, striped finish on greens and fairways, designed for minimal vibration to protect delicate turf.
Stadium & sports field maintenance
High-reliability motors capable of operating on varied artificial and natural surfaces under tight maintenance schedules.
Airport grounds keeping
Ruggedised motors built to handle vast, open areas with potential debris. Emphasis on safety, reliability and extended duty cycles.
Why choose Greensky BLDC motors for your lawn mower?
Our expertise translates into tangible benefits for your mower manufacturing or refurbishment project.
- Proven high-torque design. Our motors maintain consistent power in thick or wet grass, eliminating stalls and ensuring a clean cut every time.
- In-house R&D and customisation. We don’t just sell motors; we engineer solutions. Our team collaborates with you to optimise performance for your specific chassis and application.
- Rigorous 100% testing and 1-year warranty. Every motor undergoes full-load performance and endurance testing before shipment, backed by a comprehensive warranty.
- Optimised for efficiency. Advanced electromagnetic design extends battery life, a critical factor for cordless and robotic mowers.
- 24/7 technical support. From integration to field service, our engineers are available to support your project.
Case studies: powering mowers worldwide
“GreenBot Pro” residential robotic mower
Client: European garden tech startup
Challenge: a compact, ultra-quiet drive and cutting motor combination for a premium robot mower, with a 60-minute runtime target.
Solution: custom 36 V integrated BLDC unit with optimised gear ratios and noise-dampening.
Result: 70-minute runtime, noise below 65 dB, 30% less assembly complexity.
Municipal park maintenance fleet
Client: city parks department, North America
Challenge: converting 20+ commercial walk-behind mowers to electric power with minimal modification.
Solution: drop-in replacement 48 V high-torque BLDC motor kits with compatible controllers.
Result: fleet converted; 80% lower energy cost than gasoline, zero emissions in operation.
Precision fairway mower
Client: luxury golf resort, Asia
Challenge: precise, smooth blade motors for tournament-quality stripes without damaging root systems.
Solution: specially balanced 48 V blade motors with real-time RPM feedback for the cutting deck.
Result: consistent stripe quality across the championship course.
Manufacturing capabilities
As an OEM lawn mower motor manufacturer, Greensky Power designs and produces brushless motors that deliver performance, efficiency and durability under demanding mowing duty.
Advanced production equipment
CNC machining centres, automatic winding machines, precision assembly lines and robotic automation for consistent quality.
R&D and engineering
A dedicated engineering team with expertise in electromagnetic design, thermal analysis and motor optimisation for custom applications.
Quality control
100% testing of all motors, including performance testing, noise testing, vibration analysis and life-cycle testing.
Certifications & quality standards
Committed to international quality standards and continuous improvement in our manufacturing processes.
ISO 9001:2015
Certified quality management system ensuring consistent product quality and customer satisfaction.
CE & RoHS compliance
All motors comply with European safety and environmental standards for global market access.
Rigorous testing
Comprehensive testing including hi-pot, insulation resistance, load testing and environmental testing.
Client success stories
Trusted by companies across industries for reliable motor solutions.
Automotive manufacturer
Supplied 5,000+ custom BLDC motors for electric vehicle cooling systems with a 99.8% reliability rate.
Robotics company
Developed custom planetary gear motors for collaborative robots with precise torque control.
Medical equipment OEM
Supplied silent, high-reliability BLDC motors for diagnostic equipment with IP65 protection.
Why choose Greensky Power?
A comprehensive range of brushless DC motors for industrial and commercial applications.
Direct factory manufacturer
No middlemen. Work directly with our factory for better pricing, faster communication and full control over quality.
Custom engineering support
Our engineering team works closely with you to develop motor solutions tailored to your application requirements.
Reliable supply chain
Stable material sourcing and efficient production planning keep prototypes and mass production on schedule.
FAQs: selecting the right lawn mower motor
Can I download the datasheet without contacting sales?
Yes. All six catalogued models have a released datasheet linked from the download section above — no form and no email required. Each file is the current revision and includes the outline drawing, wire sequence and measured output curve.
Drive wheel motor or blade motor — which one do I need?
Follow the output, not the frame size. A drive wheel needs 30–70 rpm and 2.5–5.4 N·m, which means a geared motor (36 or 42 mm). A blade needs 3,500–4,500 rpm at low torque, which means a direct-drive 57 mm motor. The 57 mm blade motor has about 1/28 the torque of the 42 mm wheel motor.
How do I choose between 24V, 36V, and 48V motors for my mower design?
The voltage selection primarily depends on your power requirements and battery configuration. 24V systems are common for smaller residential robots. 36V offers a good balance of power and efficiency for most mid-range residential and commercial mowers. 48V motors suit heavy-duty commercial applications, providing higher torque and efficiency and allowing thinner gauge wiring. Our engineers can help you model the optimal system based on your cutting width, grass type and desired run time.
What is the typical lead time for custom OEM motor orders?
For standard customisations (different shaft lengths, connectors, mounting brackets), lead time is typically 4–6 weeks after final design approval. For completely new designs requiring full R&D, the timeline is project-dependent but usually 12–16 weeks to prototype. We maintain transparent communication throughout the process.
Can you provide the motor with a matched controller and software?
Yes, we are a full-solution provider. We can supply matched high-efficiency brushless motor controllers (ESC) and basic firmware. For advanced robotic mowers, we offer development support for integrating with your navigation and sensor systems (CAN bus, UART and PWM interfaces available).
What quality certifications do your motors hold?
Our production facility is ISO 9001:2015 certified. Our motors are designed to meet CE, RoHS and REACH standards. Specific certifications such as UL or TUV can be pursued for projects requiring them.
Do you offer waterproof (IP67) motors for all-weather mowers?
Yes. We specialise in high-ingress-protection motors. Our IP67-rated motors are fully sealed against dust and withstand temporary immersion in water, which suits mowers operating in dew, rain or after irrigation.
Tell us the duty point, not the wattage
Wheel or blade, output speed, torque, voltage and annual volume — that is enough to say whether a catalogued model fits or a new one is needed. Our engineers reply within 24 hours.
