TJX Series Bucking Units for Mandrel Manufacturer

TJX Series Bucking Units for Mandrel

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TJX Series

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 Parameters

Model			TJX240-375	TJX140365	TJX73-273
Core diameter		mm	Φ400	Φ400	Φ350
Core diameter		inch	15.75	15.75	13.78
Applicable size		mm	Φ240-Φ375	Φ140-Φ365	Φ73-Φ273
Applicable size		inch	9.45-14.76	5¹/₂-14³/₈	2⁷/₈-10³/₄
Maximum makeup torque		kN·m	25	30	34.5
Maximum makeup torque		ft·lbf	18440	22125	25440
Maximum breakout torque		kN·m	70	100	120
Maximum breakout torque		ft·lbf	51630	73750	88500
Speed (stepless)		rpm	2-8	1.5-4.5	1-3.5
Center height		mm	1360	1360	1360
Center height		inch	53.54	53.54	53.54
Backup stroke		mm	200	250	250
Backup stroke		inch	7.87	9.84	9.84
Hydraulic power unit	Pressure	MPa	20	20	25
	Pressure	psi	2900	2900	3625
	Flow	L/min.	40-180	40-180	40-180
	Flow	gpm	10-48	10-48	10-48
Overall size		mm	3960×1770×1960	5600×1630×1960	3960×1770×1960
Overall size		inch	156×69.7×77.2	220×64.2×77.2	156×69.7×77.2
Weight		kg	13500	15000	13500
Weight		lb	29700	33060	29700