|
Top Head Drive Assembly |
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Top Head Drive System |
Rack & Pinion, (6) Pinion Drive with Adjustable Force Limiter |
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Maximum Hook Load |
|
Standard |
Metric |
Carriage Travel Speed |
|
500,000 lbs |
226 Tonnes |
44 ft (13.4 m)/ minute |
|
375,100 lbs |
170 Tonnes |
59 ft (17.9 m)/ minute |
|
175,000 lbs |
79 Tonnes |
85 ft (25.9 m)/ minute |
|
125,000 lbs |
57 Tonnes |
120 ft (36.6 m)/ minute | |
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Motors |
(6) Radial Piston, Dual Displacement |
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Brakes |
(6) Spring Applied/Hydraulic Release |
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Gearbox |
(6) Planetary Drive |
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Rotary System |
(2) Pinion and Gear Drive with Infinitely Variable Torque |
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Maximum Rotary Torque |
30,000 ft-lbs |
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Maximum Rotary Speed |
120 RPM |
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Rotary Motors |
(2) Axial Piston/Variable Displacement |
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Rotary Brakes |
(2), Spring Applied/Hydraulic Release |
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Fluid Course |
3 inch (76 mm) |
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Maximum Mud Flow Rate |
650 U.S. Gallons ( 2,460 L)/minute |
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Maximum Rotary Pressure |
5,000 psi (345 bar) |
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Mud Swivel |
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Connection |
6 5/8 Pin |
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Fluid Course |
5 inch (127 mm) ID |
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Maximum Pressure |
5,000 psi (345 bar) |
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Maximum Speed |
200 RPM | |
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Mud Hose |
(1) 4 ½ inch (113. 4 mm) |
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Slip Spindle |
5 ½ API-FH Tool Joint Connection |
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Sub Saver |
4 ½ HX-API Box X Pin |
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Auto Lubrication Reservoir Capacity |
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Top Head Drive Dimensions |
|
Standard |
Metric |
|
Length |
14 ft. |
4.26 m |
|
Width |
10 ft. |
3.04 m | |
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Top Head Drive Assembly Total Weight |
46,000 lbs (20,866 kg) |
