TJA Series Bucking Units for Casing and Tubing Coupling

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TJA Series

The TJA series bucking unit for casing and tubing coupling is widely applied to well-servicing as well as casing and tubing manufacturing industries. Combining mature technology, state-of-the-art structure, and also high performance, this torque unit is definitely your best choice!

Our stroking unit is designed and made in accordance with API (American Petroleum Institute) standard, fit for fast and accurate makeup and breakout of connections like coupling and tubulars.

Thronging adopting up-to-date non-viscous clamping mechanism as well as precision torque measuring and controlling system, our bucking unit for casing and tubing coupling realizes computer monitoring, and also enables manual, semi-automatic or full-automatic operation.

The most important is that our oilfield bucking unit for casing and tubing coupling provides wide bucking range and large torque, and it has obtained a national patent of invention.

Technical Parameters

Model			TJA7"-25	TJA95/8"-40	TJA133/8"-45	TJA20"-50
Size range		mm	Φ60.33-Φ177.8	Φ60.33-Φ244.48	Φ60.33-Φ340	Φ244.48-Φ508
Size range		inch	23/8"-7"	23/8"-95/8"	23/8"-133/8"	95/8"-20"
Tong torque	High gear	kN·m	15	14	16	17.6
	High gear	ft·lbf	11060	10320	11800	12980
	Low gear	kN·m	25	40	45	50
	Low gear	ft·lbf	18440	29500	33190	36870
Revolving speed (rpm)	High gear	Single pump	6.4-25.5	5.7-23	3.8-20.5	4.2-17.6
	High gear	Double pumps	1-28	0.95-26	0.63-23.7	0.7-20.3
	Low gear	Single pump	3.2-12.8	2.2-8.1	1.4-7.2	1.5-6
	Low gear	Double pumps	0.53-16	0.37-9.3	0.23-8.3	0.25-7
Center height		mm	1100	1150	1150	1200
Center height		inch	43.31	45.28	45.28	47.24
Through-hole size		mm	Φ235	Φ315	Φ390	Φ565
Through-hole size		inch	9.25	12.4	15.35	22.24
Shifting cylinder stroke		mm	800	800	800	800
Shifting cylinder stroke		inch	31.5	31.5	31.5	31.5
Max. pressure of hydraulic system		MPa	20
Max. pressure of hydraulic system		psi	2900
Flow of hydraulic system	Single pump	L/min.	30-160
	Single pump	gpm	8-42
	Single pump	L/min.	5-185
	Single pump	gpm	1.3-48.9
Pneumatic control system	Pressure	MPa	0.4-1
	Pressure	psi	58-145
	Air consumption	m3/h	2
	Air consumption	cfm	1.2
Overall dimension		mm	3210×1280× 1650	3220×1300× 1700	3250×1300 ×1700	3520×1450 ×1800
Overall dimension		inch	126.4×50.4×65	126.8×51.2×67	128×51.2×67	138.6×57×70.9
Weight		kg	8000	10800	10800	12000
Weight		lb	17600	23760	23760	26400