Products Description
Equipment Parameters
| Specification | Value |
|---|---|
| Model | YNJX-120 |
| Bore Diameter | Φ 120m (~Φ 4-3/4'') |
| Centre Height | 810mm (Customizable, available for larger or smaller sizes) |
| Application | O.D. 15.88-114mm (Φ 5/8'' to 4-1/2'') |
| Speed Range | Rotation speed: Max. Low gear: 12r/min, Max. High gear: 36r/min (Customizable, available for higher speed) |
| Make-up/Break-out Torque | Max. make-up/break-out torque: 4,425 ft.lb (6 kN.m) @ 10MPa pressure |
| Application Scenarios | Make-up, break-out tubulars including sucker rod, plunger of sucker rod pump, tubings, etc. |
| 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: 10MPa; Max. flow rate: 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% |
Note: The conversion for 6 kN.m to ft.lb is approximately 4,425 ft.lb.
I. Structures and Features
1. Common YNJX120/06 Planetary Clamping Bucking Unit
The YNJX120/06 bucking machine adopts a planetary gear rotation mechanism with four-point simultaneous clamping. It provides strong, reliable, and non-slip clamping force with smooth transmission. Equipped with high and low gear shifting, the torque can be adjusted freely, ensuring both safety and flexibility.
Operation system: Supports manual operation, automatic button control, and microcomputer automatic control — selectable according to user preferences.
The machine head is designed to clamp the coupling and is driven by a hydraulic motor to rotate, enabling the make-up and break-out of threaded connections. It allows for two different speeds and torque levels during operation.
2. YNJX120/06 Plunger (Sucker Rod Pump) Bucking Unit
The hydraulic dual-friction backup tong bucking machine for sucker rod pump plungers consists of three main components: the main unit, the hydraulic power source, and the control console.
Main Unit: Composed of a platform body, guide rails, power tong assembly, friction backup tong assembly, and support bracket.
Support Bracket: Capable of moving longitudinally along the guide rails, it is used to hold and position the sucker rod pump plunger into the backup tong and main tong.
Friction Backup Tong Assembly: Composed of a roller trolley, body clamping cylinder assembly, movable die holder, and dies. The dies are clamped against the sucker rod pump plunger by hydraulic cylinder-driven lever force. The dies are made of ductile cast iron and customized according to the outer diameter of different plunger specifications, ensuring full surface contact between the die’s arc surface and the plunger for frictional clamping.
Power Tong Assembly: This unit adopts planetary gear transmission. The internal gear ring within the large gear drives four planetary gears, which in turn drive planetary jaws. Each jaw is equipped with an arc-shaped tooth plate. As the planetary gears rotate, the jaws extend and simultaneously grip the plunger at four points around the valve cover section, enabling rotation for makeup or breakout operations. The power tong features a two-speed transmission. It is recommended to use high speed for makeup, low speed for breakout, and switch back to high speed for final loosening. The main tong is powered by a hydraulic motor, which drives the dual gear set, intermediate gear, and large gear to rotate. The hydraulic motor receives hydraulic oil from the hydraulic station and pump to generate rotational force.
3. YNJX120/06 Sucker Rod Bucking Unit with Dual Power Tong and Friction Backup Tong
The YNJX120 sucker rod bucking unit consists of three main components: the main unit, the hydraulic power station, and the control console. Its advantage lies in the dual power tong structure, which allows assembly and disassembly operations to be completed without changing the orientation of the sucker rod or the workpiece, resulting in a significant improvement in efficiency.
Main Unit: Composed of a platform body, guide rails, 2 power tong assemblies, friction backup tong assembly, and support bracket.
Support Bracket: Capable of moving longitudinally along the guide rails, it is used to hold and position the sucker rod into the backup tong and power tong.
Friction Backup Tong Assembly: Composed of a roller trolley, body clamping cylinder assembly, movable die holder, and dies. The dies are clamped against the sucker rod by hydraulic cylinder-driven lever force. The dies are made of ductile cast iron and customized according to the outer diameter of different plunger specifications, ensuring full surface contact between the die’s arc surface and the rod for frictional clamping.
Power Tong Assembly: This unit adopts planetary gear transmission. The internal gear ring within the large gear drives four planetary gears, which in turn drive planetary jaws. Each jaw is equipped with an arc-shaped tooth plate. As the planetary gears rotate, the jaws extend and simultaneously grip the plunger at four points around the valve cover section, enabling rotation for makeup or breakout operations. The power tong features a two-speed transmission. It is recommended to use high speed for makeup, low speed for breakout, and switch back to high speed for final loosening. The main tong is powered by a hydraulic motor, which drives the dual gear set, intermediate gear, and large gear to rotate. The hydraulic motor receives hydraulic oil from the hydraulic station and pump to generate rotational force.
Main Parts of YNJX120 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
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 | Documents | 1 set | Includes QC certificate, warranty certificate, operation & maintenance manual, installation drawing, and e-drawing. |
III. Reference Images of YNJX120 Bucking Unit
1. Standard YNJX120/06 Bucking Unit
2. YNJX120/06 Plunger (Sucker Rod Pump) Bucking Unit
3. YNJX120/06 Sucker Rod Bucking Unit with Dual Power Tong and Friction Backup Tong
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