Верхние силовые приводы

Top drive model	DQ50/3150DB	DQ70/4500DB	HDQ70/4500DB	DQ90/6750DB
Nominal drilling depth (114 mm drill pipe), m	3500 ~ 5000	4500~7000	4500~7000	6000~9000
Rated load, kN (tons)	3150 (350)	4500(500)	4500(500)	6750 (750)
Max.continous drilling torque, N*m (lb-ft)	46700 (34444)	52600 (38796)	58000 (42779)	80000 (59005)
Max. breakout torque, N*m (lb-ft)	70000 (51630)	78900 (58194)	87000(64168)	140000(103259)
Brake torque, N*m (lb-ft)	53000 (39090)	53000 (39090)	80000 (59005)	100000 (73756)
Range of main shaft speed, r/min	0 ~227	0 ~ 227	0 ~ 227	0 ~ 241
Connection shackle type of saver sub and drill pipe	NC 50*	NC 50*	NC 50*	NC 50*
Handling range of drill pipe by backup caliper, mm	Ф 79.4 ~Ф203.2 (2 7/8 ~6 5/8)	Ф 79.4 ~Ф203.2 (2 7/8 ~6 5/8)	Ф 79.4 ~Ф203.2 (2 7/8 ~6 5/8)	Ф 73 ~Ф203.2 (2 7/8 ~6 5/8)
Max.bore diameter of backup caliper, mm	Ф216	Ф216	Ф216	Ф260
Mud passage, pressure mm, MPa	Ф76, 35	Ф76, 35	Ф76, 35	Ф102, 52.5
Rated power of main motor, kW	2 x 280	2 x 315	2 x 350	2 x 450
Working height of main body (with hook), m	5.5	5.52	5.52	6.45
Working height of main body (with traveling block), m	5.965	5.985	5.985	6.91
Note: Shackles with mark * can be changed upon clients’ requirements