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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 |
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