- Introduction
This document focuses exclusively on the production and supply of high-quality, OEM-compatible spare parts designed for the Varco TDS-11SA top drive system—a workhorse in global drilling operations, trusted for its durability and performance in both onshore and offshore environments. The core purpose of these parts is to provide drilling professionals with a reliable, one-stop solution for maintaining, repairing, and optimizing the Varco TDS-11SA top drive, ensuring minimal unplanned downtime and consistent operational safety. Every part listed—from critical hydraulic assemblies to small fasteners—matches the exact specifications of Varco’s original components, including part numbers such as 114446-500 (Accumulator Charge Assy), 30123289 (3″ Bore Wash Pipe), 125594 (IBOP Actuator Hydraulic Cylinder Assy), and 109528-1 (Brake Pads Set), guaranteeing seamless fit and interchangeability with the TDS-11SA model.
2. Product Features & Technical Details
All TDS-11SA spare parts are built to withstand the harsh conditions of drilling operations, with materials and design tailored to the TDS-11SA’s requirements:
- Materials: Tubular parts (e.g., 30123289 Wash Pipe) are made from heat-treated AISI 4140 alloy steel (tensile strength ≥900 MPa) for durability and corrosion resistance. Hydraulic seals use HNBR rubber to resist drilling fluids and H2S, while brake pads use high-friction NAO material for heat resistance. Fasteners are 8.8+ grade alloy steel with zinc-nickel plating (≥500 hours salt spray resistance per ASTM B117).
- Design: All parts are reverse-engineered to match Varco’s OEM specifications, with dimensional tolerances of ±0.02 mm for a perfect fit—no modifications needed. Modular designs (e.g., 30123290 Wash Pipe Assembly) allow technicians to replace only worn parts, reducing repair costs. Safety-focused features (e.g., certified 98898+30 IBOP Crank) meet API 7K standards to prevent unsafe operation.
- Quality Testing: Every part undergoes 100% inspection, including pressure testing (1.5x operating pressure for hydraulic parts), electrical continuity testing, and material composition analysis. The finished product qualification rate is 100%, ensuring reliability in the field.
We supply the following spare parts:
| # | Description | UOM |
| 1 | Accumulator Charge Assy, Part # 114446-500, W 1/4″, Hose 3000 Psi, 30194474 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 2 | Cable Assembly Control , (Cable, Assembly, 42 Cond.) , Part # 122517-200-25-3-B ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 3 | IBOP, External Crank, Part # 98898+30, With Certification, For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 4 | Wash Pipe 3″ Bore , Part # 30123289 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 5 | Slotted , Hex , Nut , 1/2″, Part # 50508-C ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 6 | RETAINER , DIE124935 ( 30124935 ) ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 7 | Bolt, Retainer, Part # 30122112 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 8 | Spring Lockwasher 3/4, Part # 51012-C | Each |
| 9 | SCREW, HEX HD, Part # 50012-20-C5D, MFG. NOV,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 10 | Brake Pads Set , ( Friction Pads ), Part # 109528-1 , (Set = 8 Ea. ) ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Set |
| 11 | TERM, WIRE-RING 16-14 #10, Part # 56609-11 | Each |
| 12 | SPLICE NUT, CRIMP RB44, Part # 56612-01, MFG. NOV | Each |
| 13 | SCREW,MACH-PAN HD , Part # 50649-61 , For Varco Top Drive , TDS-11SA | Each |
| 14 | Roller 4″, Part # 30157224-04 (New Part # 30158767-04), For Top Drive Type “Varco” Model: TDS-11 SA | Each |
| 15 | Pump Assy, Gear Box Lubricating, Part # 117603-1 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 16 | KIT,TUBE ASSEMBLY, Part # 30171993 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 17 | Gland, EEXE ARMOURED CABLE, P/N: 83444-06, (New Part # M614002913-10), MFG: NOV. | Each |
| 18 | Gland, EEXE ARMOURED CABLE FOR MOTOR CONTROL CABLE, P/N: 83444-04, (New Part # M614002913-06), MFG: NOV. | Each |
| 19 | GLAND, CABLE – JACKETED (UL) , Part # 86625-02 (New Part # M614002989-31), MFG. NOV , For TDS-11SA Top Drive | Each |
| 20 | Gear Box Oil Filter, Part # 30111013-1, ( New part# 30111013-KIT ) (New Part # 10028092-001), For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 21 | CONNECTOR , SINGLE Power ,Red PIN P / N 110022-1R ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 22 | CAM Follower 6″, Part # 30155438 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 23 | Cable EXANE 4 CONDUCTOR 2.5 SQ MM, MFG. NOV, Part # 56625-2.5-04 | Feet |
| 24 | BUSHING, REDUCER 1 – 3/4, Part # 56600-16-12, MFG. NOV | Each |
| 25 | S-Pipe Assembly, Part # 30156835-R75-2, MFG. NOV, For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 26 | Seal Ring, For S-Pipe Hose, Part # 114833 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 27 | VDC Serial Cable, Pigtail, 5 TSP, Connectorized, Part # 122443-9-H, Length: 9 FT, MFG. NOV, For Top Drive TDS 11SA, Varco | Each |
| 28 | Roller (Cam Follower), NOV Varco Part # 71847,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 29 | Pin, Cotter, Part # 51402-12 S ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 30 | PIN, COTTER, 1/8X2, S.S. , Part # 51402-16-S ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 31 | TDS SPACER, UPPER, 3″ WASHPIPE PN: 30123285 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 32 | TDS SPACER, MIDDLE, 3″ WASHPIPE, PN: 30123286 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 33 | TDS SPACER, LOWER, 3″ WASHPIPE PN: 30123287, For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 34 | TDS RING, HOLDING, 3″ WASHPIPE, PN: 30123288 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 35 | SPRING,COMPRESSION PH-75, Part # 30157308, MFG. NOV | Each |
| 36 | SPACER,CLAMP, Part # 30157318-3 | Each |
| 37 | SPACER,CLAMP, Part # 30157318-2 | Each |
| 38 | SPACER,CLAMP, Part # 30157318-1 | Each |
| 39 | Snap Ring, for 3″ Wash Pipe, Part # 30123562, For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 40 | Slotted , Hex , Nut , 1/2″, Part # 50508-C ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 41 | Seal Rod ,(P6210-1) (SKF, -Usa), Part# 72220 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 42 | Screw, Drilled Shunk, MFG. NOV, Part # 30157426 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 43 | Screw, Cap, Socket-Head, Dog-Nose, Washpipe, Part # 30123564, MFG. NOV,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 44 | Roller (Cam Follower), NOV Varco Part # 71847,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 45 | Rod Wiper, Tw-60, Ir-1000, (G7H/959 -6Is), Part # 72221 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 46 | Ring Cylinder Head , Part # 11085,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 47 | RETAINER, BUSHING, CYLINDER,MOUNT , Part # 121979+30 , FOR VARCO TOP DRIVE , MODEL TDS-11 | Each |
| 48 | Pump Hyd. Vane 1-0 CU.1N.1Min, Part # 107783-5C11R ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 49 | Pump Hyd. Piston , Pres. Comp., Part # 109542 (New Part # P611004347), (Update New Part # New Part # 10678630-001) For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 50 | PIN-CYLINDER MOUNTING, Part # 30172154,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 51 | Nut, Hex. HD., Slotted, Part # 50512-C ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 52 | IBOP, External Crank, Part # 98898+30, With Certification, For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 53 | Fitting, Grease, Straight Hex. , Part # 53219-1,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 54 | COUPLING,PUMP,HYD, 750BOREX1.375BORE , Part # 110023 , For Varco Top Drive Model# TDS-11 SA | Each |
| 55 | BUSHING.SLEEVE,1.38×1.38,FIBERGLIDE, Part # 118844-22-22, MFG. NOV | Each |
| 56 | BUSHING,SLEEVE,1.00×0.75,FIBERGLIDE, Part # 118844-16-12 | Each |
| 57 | Breather Reservoir for Hydraulic, Part # 71613 , For Varco TDS-11 SA Top Drive | Each |
| 58 | Bolt, Retainer, Part # 30122112 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 59 | Bearing, Bushing, Self-Lubricating.,1.00 ID X .50 LG, Fiberglide, for IBOP Actuator, PN :118844-16-08, Manufacturer :NOV, For Top Drive Type “Varco”, Model :TDS-11 SA | Each |
| 60 | Wash Pipe Assembly , 3″ Bore , Part # 30123290 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 61 | Wash Pipe Packing Kit Seal, Standard, 7500 Psi, Part # 30123290-PK , Top Drive Type “Varco” Model: TDS-11 SA | Kit |
| 62 | Wash Pipe 3″ Bore , Part # 30123289 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 63 | Wash Pipe Assembly , 3″ Bore , Part # 30123290 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 64 | Wash Pipe Packing Kit Seal, Standard, 7500 Psi, Part # 30123290-PK , Top Drive Type “Varco” Model: TDS-11 SA | Kit |
| 65 | Wash Pipe 3″ Bore , Part # 30123289 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 66 | Wash Pipe Assembly , 3″ Bore , Part # 30123290 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 67 | Wash Pipe Packing Kit Seal, Standard, 7500 Psi, Part # 30123290-PK , Top Drive Type “Varco” Model: TDS-11 SA | Kit |
| 68 | Sub, Short Saver, 6.5/8 Reg. x 4.1/2″ IF Pin x Pin, Part # 76666-2 ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 69 | CONNECTOR IN LINE SOCKET , AUX POWER ( 19 CONDUCTOR ) P.N : 114729-SL-676-18, MFG. NOV | Each |
| 70 | Connector Power Single Socket (Red ) , Part # 114869-SL-RED , For Top Drive Power Cables , Varco TDS-11SA | Each |
| 71 | Connector Power Single Socket ( White ) , Part #114869-SL-WHT , For Top Drive Power Cables , Varco TDS-11SA | Each |
| 72 | Connector Power Single Socket ( Black ) , Part #114869-SL-BLK , For Top Drive Power Cables , Varco TDS-11SA | Each |
| 73 | Assy. Hydraulic Cylinder IBOP Actuator, Varco Part # 125594, MFG. NOV,For Top Drive Type ” Varco ” Model: TDS-11 SA | Set |
| 74 | BUSHING.SLEEVE,1.38×1.38,FIBERGLIDE, Part # 118844-22-22, MFG. NOV | Each |
| 75 | Clevis, For IBOP Actuator, PN :103141-8, MFG.: NOV, For Top Drive Type Varco, Model :TDS-11-SA | Each |
| 76 | IBOP, External Crank, Part # 98898+30, With Certification, For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 77 | IBOP, External Crank, Part # 98898+30, With Certification, For Top Drive Type ” Varco ” Model: TDS-11 SA | Each |
| 78 | RETAINER, BUSHING, CYLINDER,MOUNT , Part # 121979+30 , FOR VARCO TOP DRIVE , MODEL TDS-11 | Each |
| 79 | TDS Upper IBOP Assy. Tool, ( Puller Seat ), Part # 79489-14, Manufacturer: NOV ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Kit |
| 80 | TDS Upper IBOP Assy. Tool, ( Puller Seat ), Part # 79489-14, Manufacturer: NOV ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Kit |
| 81 | TDS Upper IBOP Assy. Tool, ( Puller Seat ), Part # 79489-14, Manufacturer: NOV ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Kit |
| 82 | TDS Upper IBOP Assy. Tool, ( Puller Seat ), Part # 79489-14, Manufacturer: NOV ,For Top Drive Type ” Varco ” Model: TDS-11 SA | Kit |
| 83 | Pressure Switch Air For Top Drive (VARCO) TDS-11, Size :3.1/2″, Part :J120-15643, MFG. :NOV | Each |
3. On-Site Fault Repair Case Studies
These real-world, short case studies show how our TDS-11SA parts resolve common failures quickly, reducing downtime and ensuring safety:
Case 1: IBOP Failure Resolved with 125594 Hydraulic Cylinder Assy
An offshore rig’s TDS-11SA lost IBOP functionality, causing 14 hours of downtime. Inspection found a leaking OEM hydraulic cylinder. Technicians installed our 125594 IBOP Actuator Hydraulic Cylinder—an exact match for the TDS-11SA. Repairs took 2 hours, restoring IBOP operation and avoiding $1.68 million in additional downtime costs.
Case 2: Wash Pipe Leak Fixed with 30123290-PK Packing Kit
An onshore rig experienced severe drilling fluid loss from the TDS-11SA’s wash pipe, reducing efficiency. The worn packing kit was replaced with our 30123290-PK Packing Kit (7500 Psi seal). The leak stopped in 1 hour, saving $45,000 in lost fluid and downtime.
Case 3: Brake Failure Addressed with 109528-1 Brake Pads Set
A horizontal drilling rig’s TDS-11SA lost braking capability during drill string makeup. Worn brake pads were replaced with our 109528-1 Brake Pads Set. Braking was restored in 1.5 hours, preventing a potential rig accident and ensuring safe operation for 300+ hours.
4. Frequently Asked Questions (FAQ)
| No. | Questions | Answers |
| 1 | Will these parts work with all Varco TDS-11SA top drive serial numbers? | Yes. All parts are engineered to match Varco’s original TDS-11SA specifications, regardless of production year. Every part (e.g., 30123289 Wash Pipe, 125594 IBOP Actuator) has the same dimensions and mounting pattern as OEM parts, so they fit perfectly without modifications. |
| 2 | How long do the 109528-1 Brake Pads and 30123290-PK Packing Kit last in offshore drilling? | Under heavy offshore use (12+ hours daily), the 109528-1 Brake Pads last 250-300 operating hours, and the 30123290-PK Packing Kit lasts 200-250 hours. Proper lubrication and inspection can extend these lifespans by up to 35%. |
| 3 | Do these parts meet API 7K and ISO standards, and do you provide compliance documentation? | Yes. All safety-critical parts (e.g., 125594 IBOP Actuator, 30123289 Wash Pipe) meet API 7K, ISO 9001, and ISO 13715 standards. We provide mill test reports (MTRs) for metal parts, pressure test certificates for hydraulic components, and compliance statements to support your rig’s API 7K certification. |
5. Conclusion & Procurement Guidance
Our Varco TDS-11SA spare parts are engineered to keep your top drive running safely, efficiently, and cost-effectively—whether you need to perform routine maintenance, address an emergency breakdown, or stock up on high-wear components. Every part in our portfolio is built to match Varco’s OEM standards, comply with industry regulations (API 7K, ISO), and withstand the harsh conditions of drilling operations. With our parts, you can reduce unplanned downtime, lower maintenance costs, and ensure your TDS-11SA operates at peak performance.
Whether you need a single 125594 IBOP Actuator Hydraulic Cylinder for a critical repair, bulk quantities of 30123290-PK Wash Pipe Packing Kits for fleet inventory, or specialty tools like the 79489-14 Upper IBOP Assy Tool, we provide a complete, reliable supply solution. Our parts are backed by rigorous quality testing and technical support to help you verify part numbers, troubleshoot issues, and select the right components for your TDS-11SA
