Detailed Answer
Selection advice: Single-speed: simple start/stop (small hoists, basic equipment), low cost; Dual-speed: crane alignment, precision work (overhead crane/gantry), fine low-speed control. Dual-speed strongly recommended for lifting equipment (LDER LD-8SK starts at dual-speed, ¥450+; DK series with enhanced dual-speed). If budget allows, always go dual-speed — better efficiency and safety.
| Single-speed | Simple start/stop |
| Dual-speed | Lifting positioning |
| Recommendation | Lifting → dual-speed |
Note:The low-speed gear of dual-speed protects equipment and loads.