Products Description
Equipment Parameters
| Specification | Value |
|---|---|
| Model | YNJX-160 |
| Bore Diameter | Φ 160m (~Φ 6-1/4'') |
| Centre Height | 950mm (Customizable, available for larger or smaller sizes) |
| Application | O.D. 60-140mm (Φ 2-3/8'' to 5-1/2'') |
| Speed Range | Rotation speed: 1-20r/min (automatic gear shifting and reversing) |
| Make-up/Break-out Torque | Max. make-up/break-out torque: 14,751 ft.lb (20 kN.m) @ 20MPa pressure |
| Application Scenarios | Perforating gun assembly line and make-up, break-out tubulars including tubing, casings, and downhole tools or assemblies |
| Torque Display | The computer can display, record and control the torque and turns |
| Control Mode | Simens S7-1200 PLC + 15" all-in-one computer, operation with buttons; The machine will stop automatically reaching the setting torque |
| Torque Accuracy | 150 ft.lb |
| Dies Marking | According to API standards, no damage to pipe accuracy; Optional no-marking dies (Fe-free for special materials like chrome, and no marking on pipe surface) |
| Motor Power | 15kW (Customizable), ABB Frequency converter control |
| Hydraulic System | Max. pressure: 16-20MPa; Flow rate: 20-120L/min |
| Connections | API (Round & BTC) and Premium connections (TS3SB, VAM, BDS, SEC, AB, ANTARES, T Blue, etc.) |
| Turns Accuracy | Resolution: 1/1000 |
Torque Control Accuracy | Torque ≤ 3120N.m: ±5%; 3120N.m ≤ Torque ≤ 7800N.m: ±156N.m; Torque ≥ 7800N.m: ±2% |
| Air Pressure | 0.4-0.6MPa (Provided by user) |
Note: The conversion for 50 kN.m to ft.lb is approximately 36,878 ft.lb.
I. Structures and Features
The YNJX160 bucking machine adopts a planetary jaw (cam) clamping mechanism in the power tong. Four sets of planetary gears drive four cams arranged at 90° intervals, and the cams are clamped through friction bands. This structure provides a wide clamping range, high overall strength, and requires no tooling changes. The backup tong uses three hydraulic cylinders positioned at 120° intervals for make-up and break-out operations. It also features a wide clamping range, high structural strength, no need for tooling replacement, and can achieve clamping without leaving marks.
Power Tong Assembly
A. The power tong adopts an enclosed tong head to clamp the coupling. It is fixed to the base and does not move with the threads.
B. The power tong is driven by dual hydraulic motors, capable of bidirectional rotation. It supports automatic two-speed shifting and automatic reversing for make-up and break-out operations.
C. Clamping mechanism: Four cams are driven by planetary gears to perform clamping. Each cam is equipped with a die, forming four-point uniform clamping around the 360° circumference of the coupling. The clamping force is automatically proportional to the applied torque — the greater the torque, the deeper the dies bite into the coupling, and vice versa. This design ensures minimal die marks on the coupling while achieving the required torque.
Backup Tong Assembly
A) The backup tong adopts a three-cylinder enclosed clamping mechanism to grip the pipe body. It is mounted on a sliding carriage and can move along with the threads during make-up and break-out operations.
B) Clamping is achieved through synchronized actuation of the three cylinders, controlled by a synchronous motor. The motor ensures synchronization but does not rotate.
C) A tension/compression sensor is installed on the backup tong support to accurately measure the torque during make-up and break-out. Torque is calculated by multiplying the measured force by the length of the moment arm.
D) The forward and backward movement of the backup tong is driven by a pneumatic cylinder, with a maximum stroke of 0.8 meters.
E) The backup tong has a slight floating capability to accommodate fine threads and minor bending of the workpiece.
F) The maximum pass-through diameter of the backup tong is Ø180 mm.
Main Parts of YNJX160 Planetary Clamping Bucking Machine:
Power Tong Assembly
Backup Tong Assembly
Electrical-hydraulic Control System
Control System (PLC + Upper Computer)
Key Parts Images
Control Cabinet and Torque-turn Curve of Bucking Unit
Non-marks Dies
II. Scope of Supply
| No. | Name | Qty. (set/pcs) | Remarks |
|---|---|---|---|
| 1 | Bucking machine | 1 set | Includes power tong assembly, backup tong assembly, basement, and two moving supports. |
| 2 | Hydraulic unit | 1 set | Includes hydraulic pump, valves, integrated package, oil tank, motor, fan cooler, and pipeline. |
| 3 | Control cabinet | 1 set | Includes control panel, computer, and control box. |
| 4 | Dies | 10 pcs | — |
| 5 | Micro-dies | 10 pcs | — |
| 6 | Documents | 1 set | Includes QC certificate, warranty certificate, operation & maintenance manual, installation drawing, and e-drawing. |
III. Reference Images of YNJX160 Bucking Unit
1. Standard YNJX160/20 Bucking Unit
2. YNJX160/20 Bucking Unit to CNPC, China Image Set 1
3. YNJX160/20 Bucking Unit to CNPC, China Image Set 2
4. Perforating Gun Assembly Line (YNJX160 Bucking Unit)
5. Traditional YNJX160/20 Bucking Unit
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