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121131 Main Shaft for Nov Varco TDS11SA TDS8SA Top Drive

121131 Main Shaft for Nov Varco TDS11SA TDS8SA Top Drive Featured Image
  • 121131 Main Shaft for Nov Varco TDS11SA TDS8SA Top Drive
  • 121131 Main Shaft for Nov Varco TDS11SA TDS8SA Top Drive
  • 121131 Main Shaft for Nov Varco TDS11SA TDS8SA Top Drive
  • 121131 Main Shaft for Nov Varco TDS11SA TDS8SA Top Drive

Short Description:

Main Shaft is the core transmission component exclusively compatible with NOV Varco TDS11SA and TDS8SA top drive systems, widely used for onshore and offshore oil & gas drilling rigs.
Forged from high-strength alloy steel with precise CNC machining and strict heat treatment, this main shaft bears heavy axial weight of drill strings and transmits high rotary torque continuously under harsh working conditions of mud erosion, strong vibration and frequent load switching. It features accurate dimensional tolerance and matching structure, fully interchangeable with OEM original parts without extra modification.

Product Detail

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Core Functions
As the central drive component of the VARCO TDS11SA Top Drive System, the Main Shaft fulfills the following critical missions:

High-Torque Transmission: Directly drives drill string rotation under extreme drilling torque;
Composite Load Bearing: Integrates axial lifting, radial vibration, and torsional stress;
Dynamic Sealing Hub: Ensures rotational sealing reliability of high-pressure drilling fluid channels;
Precise Power Transfer: Connects top drive motors to the drill string, enabling zero-loss power transmission.

Part Number Description
109591 (MT)SLEEVE,FLANGED,7.87ID,300SS
110040 (MT)SLEEVE,MAINSHAFT
119707 SHAFT,MAIN, TDS10
121131 SHAFT,MAIN
110040-1 SLEEVE, MAINSHAFT, TDS11
10428 Main shaft TESCO 10428
720479 Main shaft
5049165-1 Quill Ø3.0″Bore NC61Pin EXI
810276 Intermediate helical shaft assembly (1096:1) №810276 Tesco
810375 Main shaft
30125860-API STEM/MAIN         SHAFT,API IDENTIFIED
30125860 STEM/MAIN SHAFT
830044-1 Quill,NC50Pinx6.25-3ACME-2G-LH Pin,2.5″Bore
1060119 shaft TD275
1065612 Main shaft XT
1044883 Main shaft HT
830044 Main shaft
1.01.16.020 Main shaft 1.01.16.020 DQ-40LHTY-JQ(250T)
1.01.38.006 Main shaft 1.01.38.006 DQ-40LHTY-JQ(250T)
1.02.51.052 Main shaft1.02.51.052 DQ-40LHTY-JQ(250T)
M614000582 MAIN SHAFT
121151 MAIN  SHAFT  W/LANDING  COILLAR
30178841 UMBRELLA.MAINSHAFT
110040-l SLEEVE,MAINSHAFT
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