MODEL XQ140/20 HYDRAULIC POWER TONG OPERATION MANUAL
YANCHENG TEDA DRILLING & PRODUCTION EQUIPMENT CO.,LTD
3.3 Hydraulic System
Hydraulic system consists of hydraulic source, bucket valve, hydraulic bucket,
hand control valve, hydraulic motor, hydraulic oil cylinder, pressure gauge, quick
coupler, pipe line, etc.
Fig.3-5 Hydraulic System
3.3.1Corresponding relationship between input pressure and output torque from tong
head (Fig.3-6).
Fig.3-6 Corresponding Table between Pressure and Torque
1.hydraulic motor
2.master tong control valve
3.backup tong control valve
4.hydraulic bucket control valve
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