... .Made of thick steel plates 4.One year warranty Name: 10T battery locomotive for underground mining transportation and tunneling Model: CAY10 ... take the good advantages in the field of mine control system in recent years, applied advanced AC frequency transform speed control ... , different weight of trolley locomotive, the weight have 7t, 8t, 10t, 12t, 14t, 18t, 20t, 25t, 30t, 35t, 40t, 45t, 50t ...