The TJX series bucking unit for mandrel enables quick and safe screwing on and screwing out of all parts of mandrel, including working part, extended part and end part.
This mandrel bucking unit makes use of six-butterfly type self-centering clamping mechanism to minimize damage to tubulars when large torque is produced. Meanwhile, state-of-the-art torque control system of this makeup unit automatically measures, displays, records and controls torque generated during makeup process. Thus optimal torque can be achieved.
Following are detailed parameters of our bucking unit for mandrel.
Technical ParametersModel | TJX240-375 | TJX140365 | TJX73-273 | ||
Core diameter | mm | Φ400 | Φ400 | Φ350 | |
inch | 15.75 | 15.75 | 13.78 | ||
Applicable size | mm | Φ240-Φ375 | Φ140-Φ365 | Φ73-Φ273 | |
inch | 9.45-14.76 | 51/2-143/8 | 27/8-103/4 | ||
Maximum makeup torque | kN·m | 25 | 30 | 34.5 | |
ft·lbf | 18440 | 22125 | 25440 | ||
Maximum breakout torque | kN·m | 70 | 100 | 120 | |
ft·lbf | 51630 | 73750 | 88500 | ||
Speed (stepless) | rpm | 2-8 | 1.5-4.5 | 1-3.5 | |
Center height | mm | 1360 | 1360 | 1360 | |
inch | 53.54 | 53.54 | 53.54 | ||
Backup stroke | mm | 200 | 250 | 250 | |
inch | 7.87 | 9.84 | 9.84 | ||
Hydraulic power unit | Pressure | MPa | 20 | 20 | 25 |
psi | 2900 | 2900 | 3625 | ||
Flow | L/min. | 40-180 | 40-180 | 40-180 | |
gpm | 10-48 | 10-48 | 10-48 | ||
Overall size | mm | 3960×1770×1960 | 5600×1630×1960 | 3960×1770×1960 | |
inch | 156×69.7×77.2 | 220×64.2×77.2 | 156×69.7×77.2 | ||
Weight | kg | 13500 | 15000 | 13500 | |
lb | 29700 | 33060 | 29700 |