Model Number: SR220C Brand Name: Oriemac Key Specifications/Special Features: Hydraulic rotary drilling rig machinery SR220C5-level anti-vibration technology absorbs drilling vibrational frequency all- directionally to guarantee high stabilityThe special lubricating system makes sure that it can work in high temperature environment. Rotary drive is available in three drillingmodes---standard, low speed and big torque or high speed and small torque spin-off is optionalThe removable key of rotary drive and symmetry structure design double its service lifeThe main winch has highlights of touch-bottom protection, priority control and fast line speed

Crowd cylinder has two operation modes---normal lifting and fast lifting to improve push efficiency

Mast features automatic erecting, lying and vertical adjustment to ensure the accuracy requirements in construction

Balance control system of the whole machine is available.