Detailed Answer
Proportional control (joystick/stepless speed regulation): output speed changes continuously with joystick angle, enabling smooth speed adjustment. Use cases: precision lifting (shipyard block alignment), grab bucket operation (open/close speed control), container handling. LDER LD series is mainly dual-speed (stepped); XINGJIA Star series high-end models offer proportional joystick. Standard workshops are fine with dual-speed; choose proportional for precision scenarios.
| Principle | Joystick angle → speed |
| Scenarios | Precision lifting / grab |
| XINGJIA | High-end optional |
Note:Proportional control has a learning curve — ensure adequate training.