Specifications

Top Drive:
1 API 8C standartd
2 Direct/mechanical
3 Heavy duty AC VF motor
4 Highly accurate drillling process

 

Direct Top Drive 

 

Features:

 

1.No mechanical variable transmission mechanism; forward of main shaft driven directly by motor.

 

2.Bearing is grease lubricated, without gear lubrication oil and cooling and filtering system, reducing sealing mechanism and easy for maintenance.

 

3.Equipment groups are modularized by functions, with good assembly manufacturability. 4.Modular structure is simple hence less fault points and lower fault occurrence.

 

5.Direct motor drive provides higher working torque in a short time and is irrelative with the fix designed strength of mechanical transmission, as well as reducing drive energy consumption.

 

6.More effective cooling and radiation of complete machine (arranged with high power blower and multiple air ducts.)

 

7.Less processing and manufacturing challenge and more reliable assembly manufacturability.

 

Product types and specifications of top drive:

 

Drive mode	Direct drive by AC variable frequency motor
Model	DQ225DBZ	DQ450DBZ	DQ675DBZ	DQ900DBZ
Maximum load (API8C)	2250kN	4500kN	6750kN	9000kN
Rotation speed range	0-220 r/min	0-220 r/min	0-220 r/min	0-220 r/min
Working torque	25000 N.m	45000 N.m	70000 N.m	90000 N.m
Maximum make-up/break-out torque	45000 N.m	75000 N.m	125000 N.m	135000 N.m
Braking torque	35000 N.m	50000 N.m	70000 N.m	90000 N.m
Motor power rating	288kW	580kW	900 kW	1130 kW
Holding range of backup tong (diameter)	86-197mm	86-216mm	86-216mm	86-250mm
Working pressure of hydraulic system	16 MPa	16 MPa	16 MPa	16 MPa
Nominal working pressure of central tube	35 MPa	35 MPa	52 MPa	52 MPa
Top drive weight	12.3 T	15.85 T	18.5 T	20.1 T
Top drive outline (length x width x height)	5300×1990 ×1850(mm)	5700×2180 ×2090(mm)	6700×2720 ×2370(mm)	7100×2720 ×2370