ZJ40 Truck-mounted Drilling Rig adopts double Caterpillar C18 engines with Allison transmissions. It is the best-selling mobile drilling rig for both oil drilling and workover purposes. It can reach up to 4,000m drilling depth and 10,000m workover depth, with 2,250kN max hook load. ZJ40 rig is the ideal choice for heavy duty workover and mobile drilling operation.