Boxin · Hengzhen · Botrust
Precision Manufacturing・Powering the World
High-torque brushless DC motor
This is a low-voltage, high-torque brushless DC geared motor rated at 48–72 V and 1.0–3.0 kW. It features an integrated design that combines a brushless motor with a gearbox, delivering a rated output torque of 10–30 N·m and an output speed of 300–600 rpm. The motor supports continuous S1 operation and is well-suited for low-speed, heavy-load applications such as electric tricycles, sanitation vehicles, and small industrial equipment, offering high efficiency and exceptional reliability.
- Product Description
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I. Product Overview
This is a low-voltage, high-torque brushless DC motor with a gearbox, specifically designed for applications such as electric tricycles, sanitation vehicles, and small industrial equipment. It features a horizontal base‑mounting configuration and supports a wide voltage range of 48V/60V/72V, with power ratings from 1.0 to 3.0 kW, making it an ideal drive solution for low-speed, heavy‑load scenarios.
II. Core Specifications and Parameters
1. Basic Electrical Parameters
Parameter item Specification Range Explanation Rated voltage DC 48V / 60V / 72V (customizable) Compatible with lead-acid and lithium battery packs, supporting direct drive from the battery bus. Rated power 1.0 kW / 1.5 kW / 2.0 kW / 3.0 kW Covers a range of load requirements; the higher the power, the greater the torque. Rated current Approximately 20–60 A (at 72 V) The higher the power, the higher the operating current; therefore, the wire gauge and controller must be matched accordingly. Efficiency ≥85% Brushless design plus gearbox optimization deliver high overall efficiency and low energy consumption. Insulation Class Class F (temperature resistance 155°C) Suitable for prolonged continuous operation and resistant to overheating. 2. Mechanical and Performance Parameters
Parameter item Typical value Explanation Reduction ratio 1:5 to 1:20 (commonly 1:10 or 1:15) The motor’s rotational speed is significantly reduced after deceleration, while the torque is proportionally increased. Rated speed of the main body 3000~4500 rpm The brushless motor itself operates at a high speed; after deceleration, the output speed is reduced. Rated output speed 300–600 rpm (common) Suitable for low-speed, heavy-load applications, such as tricycle hill climbing and equipment towing. Rated output torque 10–30 N·m (increases with power and reduction ratio) Peak torque can reach 2 to 3 times the rated value, meeting the demands of startup and hill-climbing. Output shaft diameter 16–22 mm (with keyway / spline) Adapter sprocket/coupling installation; the figure shows a standard shaft end with nut‑type locking. Protection rating IP54 Dustproof and splash-proof, suitable for outdoor use and humid, dusty workshop environments. Work system S1 (Continuous Operation) Supports long-term operation under load and is compatible with applications such as sanitation vehicles and three-wheeled vehicles.
III. Structure and Design Features
- Integrated design of brushless motor and gearbox
- The front stage is a DC brushless motor housed in an aluminum alloy heat‑dissipating enclosure, equipped with built-in cooling fins to prevent overheating during prolonged operation. The rear stage features a planetary or gear reduction gearbox that significantly lowers the output speed while amplifying torque, delivering low‑speed, high‑torque performance. The entire unit is mounted on a horizontal base, making it suitable for installation on tricycle rear axles and small equipment frames.
- Low-Voltage, High-Current Adaptation Design
- It features thick‑gauge windings and high‑current terminals, supporting direct battery‑bus power supply to minimize voltage drop; it is compatible with 48/60/72 V electric vehicle and sanitation‑vehicle controllers, offering simple wiring and convenient retrofitting and maintenance.
- High reliability and durability
- Brushless design eliminates brush wear, delivering a service life far exceeding that of conventional brushed motors; the gearbox features high-strength gears, supporting frequent start‑stop cycles and heavy‑load uphill operation; the aluminum alloy housing offers excellent corrosion resistance and heat dissipation, making it ideal for outdoor use and harsh operating conditions.
IV. Typical Application Scenarios
- Electric Vehicles: Power Systems for Electric Tricycles, Sanitation Vehicles, Low-Speed Sightseeing Cars, and Mobility Scooters
- Industrial equipment: small conveyor lines, traction machines, agricultural machinery, material handling equipment
- Modification scenarios: electric vehicle power upgrades, small construction machinery modifications, and power system retrofits for power tools.
V. Precautions for Use and Selection
- Controller matching : It must be paired with a DC brushless controller that matches the specified voltage and power; it supports Hall‑effect signal feedback, otherwise it will not operate properly.
- Power Supply and Wiring : A battery pack matching the motor’s voltage must be used (e.g., a 72 V motor paired with a 20‑cell lithium‑ion pack or six 12 V lead‑acid batteries); the motor phase wires are thick (yellow, blue, and green in the diagram) and should be connected to high‑current terminals to prevent overheating due to loose connections.
- Load and Operating Conditions : The larger the reduction ratio, the greater the torque, but the lower the maximum vehicle speed; select accordingly based on actual requirements. Avoid prolonged stall or overload operation, as this can cause the motor and controller to overheat and burn out.
- Installation and Maintenance : Ensure concentricity between the output shaft and the load to prevent eccentric vibration from damaging the bearings; regularly replenish the gearbox with grease to extend the service life of the gears.
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