HPJM-RE70-90-PRO-XX Robot Joint Motor
P/N Interpretation
Product description
A robot joint motor is a critical component that powers the
movement of a robotic arm or similar systems. It’s typically a
rotary actuator, and its key requirements depend on the
application, such as precision, torque, speed, and reliability.
Since your rotary actuator already integrates a motor, gearbox, and
encoder for high precision, it’s well-suited for robotic joint
applications.
Robotic joints, which are sometimes known as axes, are the moveable
parts of a robot that cause relative motion between adjacent links.
These links refer to the rigid components that connect the joints
to ensure their proper and straightforward operation.
The compact size includes servo drivers, motor side absolute value
encoder, output side absolute value encoder, and frameless torque
motors, brakes, precision harmonic reducers and other main
components, which save customers hundreds of mechanical and
electronic components selection, design, procurement, assembly
labor and time costs.
Features
√ Friction brake mechanism, accurate and reliable brake position
√ Large hollow low voltage driver
√ High precision rotary encoder
√ Combines a torque motor, driver, encoder and high precision
harmonic reducer.
Detailed Images
Specification Sheet
| Reduction Ratio | 51 | 81 | 101 | 121 |
| Rated torque | N·m | 37 | 51 | 55 |
| Maximum torque at start and stop | N·m | 69 | 91 | 102 | 108 |
| Peak torque | N·m | 108 | 142 | 163 |
| Reduction Ratio | Rated current (with aluminum heat sink) | A | 8.4 |
| Maximum current | A | 24 |
| Rated speed | RPM | 55 | 34 | 30 | 24 |
| Maximum speed | RPM | 72 | 58 | 37 | 32 |
| Absolute encoder | Encoder Type | Hollow absolute multi-turn encoder |
| Encoder resolution (motor 1 rotation) | 17 bits |
| Motor multiple revolution counter | 216(65,536) |
| Backlash | Arc sec | 20 | 10 |
| Can be customized within 10Arc sec |
| Mass | Without brake | kg | 1.25 |
| Length | mm | 72.6 |
| Through Hole | mm | 14 |
| Mass | With brake | kg | 1.67 |
| Length | mm | 96.6 |
| Through Hole | mm | 14.5 |
| Maximum continuous power of motor | W | 500 |
| Supply voltage | V | 24-48V |
| Communication bus | CAN |
| Motor insulation | Heat resistance grade:F(155℃) |
| Insulation resistance: Above 200M Ω(DC500V) |
| Insulation withstand voltage: AC1500V(1 minute) |
| Protection mechanism (protection level) | Fully enclosed and self-cooling (default IP50, special customized
IP65, IP67, IP68) |
| Gear Ratio | Peak Torque | Max Allowable Torque At Average Load (N.m) | Rated Torque at 2000RPM (N.m) | Peak Speed
(RPM) | Rated Speed
(With 1/2 Rated Torque)
(RPM) | Gear Backlash
(arcsec) |
| 51 | 63 | 42 | 32 | 77 | 61 | 20 |
| 81 | 91 | 58 | 42 | 48 | 38 | 20 |
| 101 | 102 | 61 | 50 | 40 | 30 | 10 |
| 121 | 108 | 61 | 50 | 30 | 25 | 10 |
| |
Rated Power
(W) | Supply Voltage
(V) | Max Continous Current
(A) | Rated Current
(A) | Resistance
(Ω) | Encoder Resolution
(bit) | Communication Bus |
| 500 | 24-48 | 8.4 | 6.1 | 0.38 | 17 | CAN |
| |
Torque Constant
(N.m/A) | Inductance
(mH) | Number of Pole-pairs | Hollow Shaft
(mm) | Length
(mm) | Mass
(kg) | Inertia
(g*cm2) |
| 0.118 | 0.33 | 10 | 14.5 | 71.9±0.5 | 1.3 | 594 |
Application
 |  |  |
| Robots and Dronesnh | Collaborative Robotic Arm | Automated Production Lines |
 |  |  |
| CNC Machines | Medical Devices | AGV Logistics |
