The DM-J4340P-2EC is an enhanced version of the 4340 series, optimized for higher torque output and improved mechanical durability. It integrates the motor, reducer, driver, and encoder into a compact joint module, simplifying system integration for robotic developers.
In the OpenArm robotic arm system, the DM-J4340P-2EC is typically deployed at the shoulder joint (J2). This joint experiences significant load from the arm segments and payload, making high torque and stability critical for reliable robotic arm operation.
Mechanical parameters
Performance Parameters
|
Parameter |
Value |
| Supply Voltage (V) | 24 |
| Rated Phase Current (A) | 3 |
| Peak Phase Current (A) | 8 |
| Rated Torque (Nm) | 9 |
| Peak Torque (Nm) | 27 |
| Rated Speed (rpm) | 36 |
| No-load Speed (rpm) | 52.5 |
| Rated Power (W) | 33 |
| Reduction Ratio | 40 |
| Pole Pairs | 14 |
| Phase Inductance (µH) | 360 |
| Phase Resistance (Ω) | 0.88 |
| Motor Size (mm) | 57 × 56.5 |
| Weight (g) | 375 |
| Encoder | Magnetic / Dual Encoder |
| Communication Mode | CAN, CAN FD |