Encoder motor is the cornerstone of precise, responsive electric vehicle (EV) control, integrating high-power performance with real-time speed and position feedback.
The QS MOTOR QSD155A-70 10KW PMSM Hairpin Encoder Mid Drive Motor exemplifies this technology, engineered with a single encoder sensor set and waterproof connectors to deliver unmatched accuracy for electric motorcycles.
Designed for 72V systems with 10KW rated power and 25KW peak power, this encoder motor redefines reliability and performance in the EV landscape, with applications spanning recreational, commercial, and custom build scenarios.
Core Traits of Encoder Motors: Precision at Its Core
Encoder motors integrate an encoder sensor that tracks the motor’s rotor position and speed, enabling the controller to make split-second adjustments for smooth acceleration, consistent torque, and precise speed regulation. Unlike basic Hall sensor motors, encoder motors offer:
Real-Time Feedback: The encoder transmits continuous position and speed data, eliminating lag in power delivery and enhancing ride stability.
High Precision Control: Critical for high-speed EVs, as it ensures accurate torque modulation during hill climbs, rapid acceleration, and low-speed maneuvering.
Durable Integration: QSD155A-70 features a waterproof encoder connector (IP67 rating), making it suitable for all-weather use and harsh riding conditions.
The QSD155A-70 leverages encoder technology to complement its robust power output, with specs tailored for electric motorcycle performance:
· Power & Voltage: 10KW rated power, 25KW peak power, 72V DC rated voltage—delivering enough torque (92N.m peak) for steep climbs and heavy loads.
· Speed: 6000RPM rated speed, 8000RPM peak speed, paired with a 4-pole pair design for efficient power transmission.
· Accuracy & Protection: Single encoder sensor set with waterproof connectors; IP67 waterproof rating, air cooling, and a KTY83/122 temperature sensor for thermal protection.
· Efficiency & Durability: ≥93% maximum efficiency, 150°C max working temperature, and a compact design (34×34×36cm package, 14.6kg net weight).
Application Scenarios: Where Encoder Motors Excel
The QSD155A-70 encoder motor’s blend of precision and power makes it ideal for these key use cases:
1. High-Performance Electric Motorcycles
Encoder technology ensures smooth, responsive throttle control—essential for sport electric motorcycles and performance-focused rides. With 25KW peak power and 8000RPM peak speed, it delivers rapid acceleration and stable high-speed operation, making it a top choice for enthusiasts building custom electric sport bikes.
2. Commercial Electric Motorcycle Fleets
For delivery and rental electric motorcycles, the encoder motor’s precision translates to consistent performance and reduced maintenance. The IP67 waterproof rating and temperature monitoring withstand daily use in urban and suburban environments, while the 92N.m peak torque handles cargo loads and city traffic with ease.
3. Off-Road Electric Motorcycles
Off-road riding demands precise torque control for uneven terrain, and the QSD155A-70’s encoder ensures accurate power delivery to avoid wheel spin and loss of traction. Its air cooling system and rugged build (salt spray tested for 72 hours) make it suitable for dirt trails, mountain paths, and other off-road scenarios.
4. Custom EV Builds
EV hobbyists and custom builders rely on encoder motors for tailored performance. The QSD155A-70’s compatibility with the Fardriver ND721000B controller allows for fine-tuning of speed, torque, and gear settings, making it perfect for one-of-a-kind electric motorcycle builds or retrofits.
Why Choose QS MOTOR’s Encoder Motor?
The QSD155A-70 combines encoder precision with QS MOTOR’s proven high-power engineering. Its hairpin winding technology boosts efficiency to ≥93%, while the encoder sensor ensures seamless integration with advanced controllers for personalized performance. Backed by rigorous testing (max efficiency of 94.7% in trials) and a 10% daily online discount (total price from $392.14 with adapters), it offers unbeatable value for EV builders and riders alike.
