YNJG type

YNJG 400 bucking machine

9V2A bi-directional fast charging, more saving charge; comfortable grip, anti slip design, to give you the multiple protection of the rechargeable treasure.

  • Model: YNJG400
  • Application:
  • Max.pre-tightening torque:
  • Max.screwing torque:

Model YNJG400/68 bucking machine  is a requiring equipment used to make up or break out the coupling and pipe(casing). it is often used in production line of pipe threading, which can greatly improve the efficiency of pipe threading.

Basic Info.



Bore diameter


Pipe range

51/2″-13 5/8″


50,000 lb-ft

Speed range


Motor power


Turns resolution:


Max. pressure


Torque accuracy


3120N.m≤ Torque ≤7800N.m±156N.m


Height of center


Total weight:


Manufacture :

Boyu machinery

Delivery time:



API (round & BTC)and Premium connections(with or without shoulder)

1) ModelYNJG-400

2) Bore diameter400mm

3) Centre hight1100mm

4) Apllication5"" to 13-3/8″(Notedifferent jaw plate &tooth for different pipe diameter. the jaw plate includes:5"、51/2″、65/8″、7″、75/8″、85/8″、95/8,10 3/4”11 ¾”, 13 3/8”.

5) Applicable connection

API (round / buttress) threads or special threadTS3SB, VAM, BDS, SEC, AB, ANTARES, T Blue, etc

6) Speed range:  0.5-7 r/min

7) Make –up torque

a) Max. torque

The Max. make-up torque is 75000ft-lbs@ 20Mpa pressure

b) Torque display

The computer can display, record and control the torque and turns.

8) Control mode

PLC+15” tablet PCoperation with buttons. And the machine will stop automatically reaching the setting torque.

9) Motor power30Kw

10) Hydraulic systemMax.pressure20MPaflow rate40-210L/min 

11) Working pressure0.4-0.8Mpa

12) Stroke of the moving cylinder300mm

13) Size & weight

Main machine: 3mx1.4mx1.8m    4795kg

Hydraulic unit: 1.7mX1.7mX1.7m   1005kg

Operation cabinet: 1.8mx0.6mx1.6m   125kg

Loading table11mx1.2mx0.9m      2455kg

1,Main machine: 3000mm×1350mm×1650mm (length ×width× height)    1set

2,Hydraulic unit: 1800mm×1200mm×1400mm (length ×width× height)  1set

3,Operation cabinet: 1000mm×660mm×1020mm (length ×width× height)    1set

      4, loading table:5.5x1.2x0.9x2pc  1set