Servomotor servo-gearmotor HPJM-RE series

harmoniccoaxialhollow-shaft

Introduction
The Robot Joint Motor achieves highly precise motion control through integrated components including harmonic drive, frameless torque motor, brake, encoder, and drive unit, with optimized size and weight. It delivers greater torque, higher precision, more compact size and lighter weight. Customization services are available according to specific requirements. Robot Joint Motors typically support a wide voltage range of DC24V~DC48V. As a core component in the robotics industry, these motors support development of specialized robots and humanoid robots toward higher flexibility and broader application scenarios. They are also applied in semiconductor equipment, photovoltaic equipment, precision medical equipment, 3C equipment and optical equipment.

Core Components

• Power Unit (Frameless Torque Motor): Provides high torque density and compact structure, suitable for high dynamic load scenarios.
• Harmonic Drive: Achieves speed reduction and torque multiplication, featuring zero backlash and high precision (backlash controlled within 20 arcsec).
• Dual Encoders (Motor-side + Output-side): Support full closed-loop control with repeat positioning accuracy of ±10 arcsec.
• Temperature Sensor: Monitors load and environmental status in real time to enhance safety and adaptability.
• Embedded Drive Unit: Supports protocols like EtherCAT and CANopen, enabling dynamic PID adjustment.

Features

• Superior precision & zero backlash
  • High Precision and Zero Backlash: Zero-backlash design eliminates transmission clearance of traditional reducers, achieving repeat positioning accuracy of ±10 arcsec and absolute positioning accuracy of ±30 arcsec; suitable for precision motion control scenarios (e.g., surgical robots, collaborative robotic arms).
  • 3D Conjugate Dual-Arc Tooth Profile Technology: Optimizes tooth profile structure, reduces vibration and noise, improves transmission stiffness and service life, enabling smoother and more precise robot movements.
• Highly Integrated, Compact and Lightweight Design
  • Compact size and light weight: High integration of harmonic drive and frameless torque motor results in compact structure, suitable for space-constrained scenarios (e.g., robot wrists, head joints).
  • Lightweight material application: Uses high-strength aluminum alloy, carbon fiber and other materials to reduce weight and improve robot energy efficiency and flexibility.
• High Transmission Efficiency: Transmission efficiency exceeds 80%, reducing energy loss and supporting efficient power transmission under dynamic load changes.
• High Safety and Reliability
  • Torque sensor integration (customizable): Supports collision detection and drag teaching functions, enhancing human-robot collaboration safety.
  • Impact resistance and long service life: Harmonic drive can withstand high-load emergency stops, designed precision lifespan exceeding 10,000 hours for harsh industrial environments.
• Intelligent Integration and Control
  • Embedded controller with multi-protocol compatibility: Supports EtherCAT and CANopen, enabling dynamic PID adjustment.
  • Modular design: Standardized interfaces facilitate quick integration and maintenance.

Specification (table)
Columns: Joint Model Number (Red mark indicates module outer diameter) | Gear Ratio | Rated Torque @2000RPM (N.m) | Max Allowable Torque At Average Load (N.m) | Impact Torque (N.m) | Rated Speed (With 1/2 Rated Torque) (RPM) | Peak Speed (RPM) | Rated Power (W) | Supply Voltage (V) | Rated Current (A) | Max Continuous Current (A) | Encoder Resolution (bit) | Torque Constant (N.m/A) | Gear Backlash (arcsec) | Communication Bus | Hollow Shaft (mm)
PRO Series | HPJM-RE30-40-PRO-XX | 51/101 | 1.8/2.8 | 2.3/3.3 | 3.3/4.8 | 90/45 | 118/59 | 36 | 24-48 | 1 | 2 | 216 (65,536) | 0.024 | 40/40 | CAN/EtherCAT | 6
HPJM-RE40-52-PRO-XX | 51/101 | 4/6.5 | 5.5/8.9 | 8.3/11 | 80/40 | 118/59 | 90 | 24-48 | 2 | 3 | 216 (65,536) | 0.05 | 40/30 | CAN/EtherCAT | 12
HPJM-RE50-60-PRO-XX | 51/81/101 | 6.6/9.6/9.6 | 8.6/13.5/13.5 | 23/29/34 | 75/46/37 | 97/61/49 | 150 | 24-48 | 3.6 | 5 | 216 (65,536) | 0.089 | 20/20/10 | CAN/EtherCAT | 12
HPJM-RE50-70-PRO-XX | 51/81/101 | 6.6/9.6/9.6 | 8.6/13.5/13.5 | 23/29/34 | 75/46/37 | 97/61/49 | 150 | 24-48 | 3.6 | 5 | 216 (65,536) | 0.089 | 20/20/10 | CAN/EtherCAT | 12
HPJM-RE60-70-PRO-XX | 51/81/101/121 | 19.8/27.5/30/30 | 32/33/49/49 | 42/53/66/66 | 68/43/34/24 | 82/51/41/32 | 300 | 24-48 | 5 | 6.7 | 216 (65,536) | 0.096 | 20/20/10/10 | CAN/EtherCAT | 18
HPJM-RE60-80-PRO-XX | 51/81/101/121 | 19.8/27.8/30/30 | 32/33/49/49 | 42/53/66/66 | 68/43/34/24 | 82/51/41/32 | 300 | 24-48 | 5 | 6.7 | 216 (65,536) | 0.096 | 20/20/10/10 | CAN/EtherCAT | 18
HPJM-RE70-80-PRO-XX | 51/81/101/121 | 32/42/50/50 | 42/58/61/61 | 63/91/102/108 | 61/38/30/25 | 77/48/40/30 | 500 | 24-48 | 6.1 | 8.4 | 216 (65,536) | 0.118 | 20/20/10/10 | CAN/EtherCAT | 18
HPJM-RE70-90-PRO-XX | 51/81/101/121 | 32/42/50/50 | 42/58/61/61 | 63/91/102/108 | 61/38/30/25 | 77/48/40/30 | 500 | 24-48 | 6.1 | 8.4 | 216 (65,536) | 0.118 | 20/20/10/10 | CAN/EtherCAT | 18
HPJM-RE80-97-PRO-XX | 51/81/101/121/161 | 48/78/84/84/84 | 68.8/107/133/133/133 | 121/169/194/207/217 | 54/35/27/23/17 | 65/43/36/30/22 | 750 | 24-48 | 9 | 10.4 | 216 (65,536) | 0.143 | 20/20/10/10/10 | CAN/EtherCAT | 27
HPJM-RE80-110-PRO-XX | 51/81/101/121/161 | 48/78/84/84/84 | 68.8/107/133/133/133 | 121/169/194/207/217 | 54/35/27/23/17 | 65/43/36/30/22 | 750 | 24-48 | 9 | 10.4 | 216 (65,536) | 0.143 | 20/20/10/10/10 | CAN/EtherCAT | 27
HPJM-RE100-120-PRO-XX | 51/81/101/121/161 | 94/146/169/169/168 | 120/185/267/267/267 | 267/376/411/436/459 | 44/29/22/18/12 | 55/37/29/24/18 | 1000 | 24-48 | 15.8 | 16.9 | 216 (65,536) | 0.175 | 20/20/10/10/10 | CAN/EtherCAT | 32
HPJM-RE100-142-PRO-XX | 51/81/101/121/161 | 94/146/169/169/168 | 120/185/267/267/267 | 267/376/411/436/459 | 44/29/22/18/12 | 55/37/29/24/18 | 1000 | 24-48 | 15.8 | 16.9 | 216 (65,536) | 0.175 | 20/20/10/10/10 | CAN/EtherCAT | 32
HPJM-RE110-145-PRO-XX | 51/121/161 | 169/363/363 | 255/586/586 | 532/802/841 | 22/12/7 | 34/14/10 | 1500 | 24-48 | 14.1 | 30.2 | 216 (65,536) | 0.293 | 20/20/10 | CAN/EtherCAT | 40
HPJM-RE110-170-PRO-XX | 51/121/161 | 169/363/363 | 255/586/586 | 532/802/841 | 22/12/7 | 34/14/10 | 1500 | 24-48 | 14.1 | 30.2 | 216 (65,536) | 0.293 | 20/20/10 | CAN/EtherCAT | 40
Note: Specifications are for reference only. Actual dimensions subject to engineering drawings. PRO Series hollow-shaft models support customization: Brakes (optional); EtherCAT/CanOPEN protocols; Low-temperature operation (-40°C).

Caractéristiques / Spécifications techniques

• Series: PRO Series
• Supply Voltage: DC 24-48 V
• Encoder: 216-bit (65,536) resolution; dual encoders (motor-side + output-side)
• Repeat Positioning Accuracy: ±10 arcsec; Absolute Positioning Accuracy: ±30 arcsec
• Gear Backlash: controlled within values down to 10–40 arcsec depending on model; typical spec: within 20 arcsec achievable
• Communication: CAN / EtherCAT
• Torque Range: from ~1.8 N·m up to several hundreds N·m depending on model (see table rows for model-specific rated and allowable torques)
• Rated Speeds: model-dependent (examples in table: 36 W to 1500 W rated power; rated speeds and peak speeds per model in table)
• Torque Constant examples: 0.024 N·m/A (smaller models) up to 0.293 N·m/A (larger models)
• Transmission Efficiency: >80%
• Materials: high-strength aluminum alloy, carbon fiber and other lightweight materials for reduced weight
• Sensors & Safety: temperature sensor, optional torque sensor (for collision detection and drag teaching)
• Design: zero-backlash harmonic drive, frameless torque motor, embedded drive unit with dynamic PID adjustment and multi-protocol support
• Customization: hollow shaft dimensions, brakes (optional), low-temperature operation, communication protocol selection