Servomotor servo-gearmotor HPJM-RE70-90-PRO-XX

harmoniccoaxialhollow-shaft

Introduction
The HPJM-RE robot joint motor (PRO Series) integrates a harmonic drive, frameless torque motor, brake, dual encoders and an embedded drive unit in a compact housing to enable precise, repeatable joint motion for robotic applications. Typical supply voltage range is DC 24V–48V. Units are offered with customization options (brake, torque sensor, low-temperature operation, hollow-shaft sizes, communication protocol selection). Applications include industrial and collaborative robots, humanoids, semiconductor tooling, precision medical devices, photovoltaic and 3C/optical equipment.

Core Components

• Power unit (Frameless torque motor): high torque density in a compact package, suited to dynamic loads.
• Harmonic drive: speed reduction and torque multiplication with near-zero backlash (backlash controlled within ~20 arcsec on selected models).
• Dual encoders (motor-side and output-side): enable full closed-loop control with repeat positioning accuracy ±10 arcsec.
• Temperature sensor: real-time monitoring of load and environment for safety and adaptive control.
• Embedded drive unit: supports EtherCAT and CANopen, enables dynamic PID tuning and modular control integration.

Features

• Precision and near-zero backlash
  • Zero‑backlash transmission eliminates traditional reducer clearance, delivering repeatability ~±10 arcsec and absolute positioning ~±30 arcsec for precision motion tasks (e.g., surgical robots, collaborative manipulators).
  • 3D conjugate dual‑arc tooth profile design reduces vibration and noise, increases stiffness and service life for smoother motion.
• High integration, compactness and low weight
  • Integrated harmonic drive and frameless motor provide a compact envelope ideal for space‑constrained joints (wrists, heads).
  • Use of high‑strength aluminum alloys and carbon fiber in critical parts to reduce mass and improve energy efficiency.
• High transmission efficiency: >80% to minimize energy loss under dynamic loads.
• Safety and reliability
  • Optional torque sensor for collision detection and drag‑teaching functions to support human‑robot collaboration.
  • Impact resistance and long precision life (design target >10,000 hours) for industrial duty cycles.
• Intelligent control and modularity
  • Embedded controller with multi‑protocol support (EtherCAT, CANopen) for easy integration and runtime PID adjustment.
  • Modular interfaces for rapid installation and maintenance.

Specification (table representation)
Joint model (module outer diameter indicated) | Gear ratio | Rated torque @2000 RPM (N·m) | Max allowable torque (avg 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 examples: HPJM-RE30-40-PRO-XX — 51/101 | 1.8/2.8 N·m | 2.3/3.3 N·m | 3.3/4.8 N·m | 90/45 RPM | 118/59 RPM | 36 W | 24–48 V | 1 A | 2 A | 216 (65,536) | 0.024 N·m/A | 40/40 arcsec | CAN/EtherCAT | 6 mm; other HPJM-RE variants cover higher torques, speeds and hollow‑shaft sizes up to 40 mm and powers to 1500 W. Specifications are for reference; refer to engineering drawings for exact dimensions. PRO Series hollow‑shaft models support optional brakes, EtherCAT/CANopen, and low‑temperature operation (down to −40°C).

Technical characteristics / specifications

• Brand/Manufacturer: HONPINE (Suzhou Honpine Precision Industry Co., Ltd.)
• Product family / model series: PRO Series (HPJM‑RE)
• Supply voltage: DC 24V–48V
• Encoder resolution: 216 (65,536)
• Repeat positioning accuracy: ±10 arcsec; Absolute positioning accuracy: ±30 arcsec
• Gear backlash: typically ≤20 arcsec depending on model
• Communication: CANopen and EtherCAT supported
• Torque constant examples: 0.024 – 0.293 N·m/A (varies by model)
• Transmission efficiency: >80%
• Designed precision life / impact resistance: target >10,000 hours
• Hollow shaft options: multiple diameters per model (see specification table)
• Typical rated power: 36 W up to 1500 W across the range; refer to per‑model data for currents, torques and speeds
• Optional features: brakes, torque sensor, low‑temperature operation, hollow‑shaft customization