Nov Varco TDS11SA Main Shaft for TDS Top Drive System P/N 121131 OEM Spare Part

• Customization: Available
• After-sales Service: Provide
• Warranty: 1 Year
• Model NO.: 121131
• Manufacturing Process: Assemble
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Stainless Steel
• Model: TDS11SA, TDS8SA, TDS9SA
• Brand: Varco, Tesco, Bpm, Jh, Canrig
• Certificate: ISO,API
• Weight: 560 Kg
• Part Number: 121131
• Delivery Date: in Stock
• Price: Contact Us
• Application: Top Drive
• Coc: Provide
• Coo: Provide
• Low Temperature: Yes
• Colour: Black
• Customized: Acceptable
• Other Pn: Contact Us
• Drawing: Yes
• Transport Package: Wooden Box
• Specification: 2020*600*650 mm
• Trademark: VSP
• Origin: China
• HS Code: 8431431000
• Production Capacity: 100 Ea/Year
• Package Size: 30.00cm * 65.00cm * 65.00cm
• Package Gross Weight: 560.000kg

Product Description

VARCO TDS11SA Top Drive Main Shaft | Part No. 121131

Core Power Transmission Hub, Reliably Bearing Critical Drilling Missions

 

Product Name:Main Shaft 121131 TDS11SA

Brand: VARCO,TESCO,CANRIG,TPEC,JH,HH,BPM.

Applicable models: TDS4SA, TDS8SA, TDS9SA, TDS11SA

P/N:110040,115025,116237,119707,120116,120534,121131,613435,643594,etc.

Price and delivery: Contact us for a quotation

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.

Our Products:
 

 

Our Key Advantages

In-Stock Supply & Rapid Response
Full range TDS11SA Main Shafts (121131) available from stock, global delivery within 72 hours, eliminating downtime losses.

OEM-Identical Manufacturing
Strict compliance with VARCO original specifications:

• Vacuum-degassed forged steel (AISI 4140H) with tensile strength ≥1,100MPa;

• Dual-frequency induction hardening (depth 3-4mm, hardness HRC 58-62);

• 5-axis CNC machining, key tolerances controlled to IT6 precision.

Direct Manufacturer with Proven Expertise
As certified VARCO Top Drive component fabricators:

• Hold original design blueprints & heat treatment process database;

• Delivered 1,200+ TDS11SA Main Shafts with <0.3% failure rate;

• Provide full lifecycle support: installation guidance - condition monitoring - lifespan prediction.

Globally Validated Performance
Deployed in extreme environments including Middle Eastern desert fields, North Sea ultra-deep platforms, and Siberian arctic operations, achieving 18,000+ hours mean time between failures.
 

Company Profile:

SHANDONG VS PETROLEUM TECHNOLOGY CO.LTD (VSP), founded in 2010, takes the Manufacturing,Import & Export of petroleum equipment as the main business, and the oil&gas drilling logistics support and technical services as the carrier, this enables it to meet the increasing demand of equipment for domestic and foreign petroleum industry. VSP has independently developed and launched the DQ series top drive, which are suitable for drilling operations at depths ranging from 2000 to 7000 metres.It also provide OEM parts and substitutes for top drive of VARCO,TESCO,CANRIG,TPEC,JH,BPM,HongHua.

We are a manufacturer and supplier of top drive system(TDS) & spare parts and oil drilling accessories from China. We provide accessories and technical services for well-known top drive brands such as Varco, TESCO, BPM, JH, TPEC,HH(HongHua),GANRIG, etc.

We can supply a full range of accessories for TDS8SA, TDS9SA, TDS10SA, TDS11SA and other models.

 Manufacturing and Warehouse

Here attached others Main shaft's part number for you take a reference:
 

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

Keep Your Top Drive main shaft Turning Reliably
Choosing OEM-grade VARCO Main Shafts isn't just purchasing spare parts - it's integrating uncompromised reliability into drilling operations. Contact us now for customized technical solutions and emergency support
 

FAQ

 1. International standards and certification system
VSP products shall comply with API (American Petroleum Institute), ISO (International Organization for Standardization) and other international standards to ensure the global versatility and reliability of the products. The related products have passed CE (EU certification), API certification, ASME (American Institute of Mechanical Engineers certification) and other authoritative certification to prove that their quality and performance meet the industry requirements.
 

2.Quality testing system

VSP equipment and spare parts subject to strict quality testing in the production process, including material testing, performance testing and field testing, and issue quality testing report to ensure the safety and stability of the product in practical application.
 

3.Products performance control

With years of industry experience, we focus on the following aspects to improve the performance of products:
1)Material selection and anti-corrosion protection
2)Sealing design
3)working Pressure and temperature
4) flow capacity control
5) Power and torque
6) Explosion-proof and protection level

4.Installation ,use and training
1) we provide the detailed the guild book of Installation and operation, and related technical support documents as client's requirement, meanwhile VSP will afford the long-range remote guidance for trouble shooting.
2) VSP will provide the training work for related equipment in our workshop or on worksite of user, for specific articles, will refer to the training agreement.

The users should also consider the Working condition matching on site.

5.Maintenance and Repairation
Replace the vulnerable parts regularly
Inspection of Fasteners
Regular lubrication
Cleaning and dust removal
Electrical system maintenance

6. Transportation and packaging
All equipment and materials must be firmly packed with vibration reduction and shock prevention measures to ensure integrity during ocean travel, land transportation and multiple handling, loading and unloading
Packaging according to the characteristics and needs of the equipment, plus moisture, mildew, rust, corrosion protection measures, to ensure that the goods are safely delivered to the installation site without any damage or corrosion
Choose transport correctly and maintain them to ensure they are in good condition

7.After-sales service and technical support
Quick response, the company provides 24-hour after-sales consulting service, after customers submit questions by phone, email or online platform, professional and technical personnel will give a clear answer within 1 hour, to ensure that the customer's problems are solved in time
Each after-sales consultation will be recorded by the system and generated with a unique number. Customers can query the progress of problem processing at any time through the number to ensure that the problem is tracked and closed-loop management.
In order to meet the needs of global customers, the after-sales consulting team is equipped with multi-language service personnel, able to communicate with customers in English, Russian, Arabic and other languages, to ensure the accuracy and efficiency of information transmission.