110V Portable Line Boring Machine, Hole Drilling Machine Bore Diameter 1.77"-7.08", with 4.92ft Drilling Bar and Control Handle

【Parameters】- The maximum processing hole diameter: Ф180mm; The minimum processing hole diameter: Ф45mm; The maximum processing travel: 380mm ; The maximum feed depth: 2mm on one side (A3 steel); Surface roughness: Ra3.2; Deviation form circular form<0.02mm; Voltage：110V60Hz; Power:1500W; Boring bar size: 150cm, diameter 40mm 【4.9FT Boring Bar】 - The boring bar is made of high-strength alloy and structural steel, which has the characteristics of high hardness, high precision, high toughness and good wear resistance. The boring bar can be disassembled separately for convenient installation. 【Control】-- The control cabinet is installed below the main engine to be beneficial to safety operation. The motor controller is equipped with a dynamic delay braking program to avoid vibration during shutdown. 【Stepless Speed Regulation】 - The whole machine adopts 110V constant current motor with low speed and large torque, which can realize stable processing and superior performance. Stepless speed regulation can be realized for feed processing. The feeding process can be set as required, and it will stop automatically after reaching the limit switch. 【Application】- Hole drilling machine for engineering machinery is a portable processing equipment developed for field service of engineering machinery, which is mainly used in processing of small-scale pipeline inner hole and concentric span hole, and widely applied in engineering machinery, including excavator, crane, loader, and hoist.