Product Introduction
This curated assortment covers all mission-critical hydraulic, mechanical, sealing, and electrical components for the Varco TDS 4S top drive and its auxiliary drilling equipment, including seal kits, cylinder repair kits, brake parts, hydraulic hoses, bearings, fasteners, flow switches, BOP sealing elements, mud pump wear parts, and torque tool components. All parts undergo factory pressure and load testing validated for the top drive’s rated 750-ton lifting capacity and 7500 PSI hydraulic operating pressure, with full material traceability and compliance with API oilfield equipment standards. The lineup features hardened alloy steel structural parts, high-pressure elastomer seals, corrosion-resistant hydraulic components, and precision-machined wear parts, fully mapped to OEM part numbers for simplified inventory management and emergency field repairs.
Functional Performance Specifications
These Varco TDS 4S spare parts deliver industry-leading oilfield reliability: OEM seal kits and cylinder repair kits provide leak-free operation at 7500 PSI hydraulic pressure, with a service life of 18,000+ operating hours; brake components and drawworks parts withstand dynamic loads up to 220MPa, reducing friction wear by 40%; flow switches and electrical components maintain stable top drive control with MTBF (Mean Time Between Failures) of 25,000+ hours; mud pump and BOP parts sustain consistent fluid handling and well control performance; and precision bearings/fasteners absorb heavy rig vibration, preventing premature component failure during continuous drilling.
Structural & Material Features
- OEM Precision Machining: All structural and wear components are manufactured to tight tolerances (±0.0003 inch), ensuring perfect fitment with Varco TDS 4S top drive assemblies and auxiliary drilling equipment.
- Offshore-Grade Durability: Load-bearing parts use hardened alloy steel, seals use fluoroelastomer for oil/corrosion resistance, and hydraulic components use saltwater-resistant alloys to withstand harsh drilling environments.
- High-Pressure Sealing Design: Multi-stage seal kits and O-rings create tight, long-lasting hydraulic joints, preventing fluid loss and contamination of top drive internal systems.
- Vibration-Resistant Construction: Heavy-duty bearings, fasteners, and mounting components absorb rig vibration, eliminating loosening and wear during high-torque top drive operation.
- Cross-Equipment Compatibility: Parts are engineered to integrate seamlessly with paired mud pumps, BOPs, drawworks, and drill tongs, streamlining full rig maintenance.
Applicable Operating Conditions
These spare parts are built for extreme offshore and land drilling environments, optimized for the Varco TDS 4S top drive and auxiliary equipment installed on drilling vessels, offshore platforms, and land workover rigs. They perform reliably in ambient temperatures ranging from -40°F to 150°F, resist exposure to drilling mud, hydraulic oil, saltwater, and heavy rig vibration, and endure continuous high-torque, high-load drilling operations. Components are suitable for offshore hazardous locations and fully comply with API 7K and IADC drilling safety standards.
Maintenance & Service Recommendations
- Inspect top drive cylinder seals, hydraulic hoses, and repair kits monthly for wear or leakage; replace degraded components immediately to maintain hydraulic pressure and prevent downtime.
- Check brake shoes, bearings, and fasteners for drawworks and top drive quarterly for wear; retorque fasteners to OEM specifications and replace worn brake parts to ensure safe stopping capacity.
- Lubricate bearings, bushings, and moving components with heavy-duty lithium grease every 2,500 operating hours to reduce friction and prevent seizing.
- Inspect BOP seals, mud pump wear parts, and flow switches semi-annually for fatigue or damage; replace OEM parts during scheduled rig maintenance to sustain well control and fluid handling.
- Perform full top drive hydraulic and mechanical inspection every 12 months or 16,000 operating hours; use OEM overhaul kits for complete, reliable top drive rebuilds.
- Stock critical high-wear parts (seal kits, cylinder repair parts, bearings, hydraulic hoses) at recommended minimum levels to avoid unplanned top drive shutdowns.
- We supply the following spare parts:
| pos. | PN | item |
| 1 | 85678 | Leveling Cylinder Seal Kit for TDS-4S Top Actuator |
| 2 | 1000149 | Repair kit for manual regulator |
| 3 | 50004100-3 | Set of black linings for 350 t links shank diameter 3 1/2″ |
| 4 | 50004100-2 | White lining kit for 500 t links shank diameter 4 1/2″ |
| 5 | 50004100-1 | Set of green linings for 750 t links shank diameter 5 3/4″ |
| 6 | 50004133-12 | Accumulator Cylinder Precharge Pressure Test Kit Varco 50004133 |
| 7 | 20012091 | Multi-Ram block, 5″-7″, NXT complete with seals for NXT Shaffer blowout preventer |
| 8 | 20011987 | 6-5/8″ NOV/20011987 Tubing Dies Assembly with Seals for NXT Shaffer BOP |
| 9 | 56625-1.5-03 | Power cable 3×1.5 mm2 |
| 10 | 56626-07 | Power cable 7×1 mm2 |
| 11 | 703305-19G | Set of shims |
| 12 | 20017079+20 | Diaphragm repair kit |
| 13 | 9930026 | Triplex pump repair kit for air defense control station |
| 14 | 9910001 | Set of repair regulator with manual control for air defense control station |
| 15 | 0000385 | Repair kit for cylinder accumulator 15 gallon for air defense control station |
| 16 | 9933240 | Repair kit for pump |
| 17 | 9931510 | Repair kit for pump |
| 18 | 94764-SK | Counterweight cylinder repair kit |
| 19 | P611000038 | Mud tube assembly kit 3″ SVP assembly |
| 20 | P611000038-500 | Face seal kit 3″ |
| 21 | P611000038-501 | Set of service sealing rings 3″ |
| 22 | 30182002-502 | Key set |
| 23 | P611000038-503 | Floating carrier seal kit |
| 24 | P611000038-504 | Lower Nut Kit |
| 25 | P611000038-505 | Top Nut Kit |
| 26 | 36020 | Seal kit |
| 27 | 30155689-2 | Flow Switch 0.25 GPM for Top Actuator TDS-4S |
| 28 | 30155689-3 | Flow Switch 1.2 GPM for Top Actuator TDS-4S |
| 29 | 71847 | Rod pusher for top actuator TDS-4S |
| 30 | 109600-11 | Auxiliary fluid circuit for TDS-4S top power drive |
| 31 | 1292182 | Oil scraper for mud pump 12-P-160 |
| 32 | 1292266 | Wear-resistant disc for mud pump 12-P-160 |
| 33 | 6908040 | Steel wafer ring for mud pump 12-P-160 |
| 34 | 81788+30 | Torque wrench for Hydra Tong T4063 automatic drill tong |
| 35 | 143267+71 | Hydraulic hose 3/8″, 500 bar for Hydra Tong T4063 automatic drill tong |
| 36 | 143273+71 | Hydraulic hose 3/8″, 500 bar for Hydra Tong T4063 automatic drill tong |
| 37 | 143280+71 | Hydraulic hose 3/8″, 500 bar for Hydra Tong T4063 automatic drill tong |
| 38 | 143281+71 | Hydraulic hose 3/8″, 500 bar for Hydra Tong T4063 automatic drill tong |
| 39 | 143282+71 | Hydraulic hose 3/8″, 500 bar for Hydra Tong T4063 automatic drill tong |
| 40 | 143283+71 | Hydraulic hose 3/8″, 500 bar for Hydra Tong T4063 automatic drill tong |
| 41 | 143284+71 | Hydraulic hose 3/8″, 500 bar for Hydra Tong T4063 automatic drill tong |
| 42 | 7815673 | Pin cotter pin with ring for drawworks 1320-UDBE |
| 43 | 7000208-30 | Hex screw for drawworks 1320-UDBE |
| 44 | 2111777 | Pneumatic pump for drawworks 1320-UDBE |
| 45 | 05466650НР | Cylinder sleeve ⌀6 1/2″ for mud pump 12-P-160 |
| 46 | 2110490 | Bearing for drawworks 1320-UDBE |
| 47 | 2110288 | Spring for drawworks 1320-UDBE |
| 48 | 20026217+20 | Top seal for Shaffer 18-3/4-5/10/15Kpsi shear ram |
| 49 | 20026206+20 | Bottom seal CVX, for Shaffer 18-3/4-5/10/15Kpsi shear ram |
| 50 | 2110001 | Emergency brake cylinder for drawworks 1320-UDBE |
| 51 | 10852863-001 | Sealing element for universal preventer 18-3/4″ |
| 52 | 7401803 | Double acting valve SPM |
| 53 | 81768 | Proportional valve for Hydra Tong T4063 automatic drilling tong |
| 54 | 98826 | Hydraulic clamp block for Hydra Tong T4063 automatic drill tong |
| 55 | 3688AP06 | Air filter for cooling system of electric motors |
| 56 | 30123288 | Retaining ring for TDS-4S upper power drive |
| 57 | 123284 | Pressure pipe nut for TDS-4S top actuator |
| 58 | 30123289 | Pressure pipe 7500 psi for top actuator TDS-4S |
| 59 | 30123563 | Stuffing box for top power drive TDS-4S |
| 60 | 123585 | Top separator ring for top power drive TDS-4S |
| 61 | 30123286 | Middle separator ring for top power drive TDS-4S |
| 62 | 123287 | Lower separator ring for upper power drive TDS-4S |
| 63 | 31948/M2 | Sleeve M2 for safety valve Titan Class C |
| 64 | 32524 | Valve seat insert for safety valve Titan Class C |
| 65 | 33003-01 | Piston Rod Subassembly for Titan Class C Relief Valve |
| 66 | 32501-2 | Lower piston seal for safety valve Titan Class C |
| 67 | 702640-24-31 | Sealing ring in the gap between the sleeve and the housing for the Titan Class C safety valve |
| 68 | 702640-23-01 | Stem bushing outer seal for Titan Class C safety valve |
| 69 | 1292240 | Injection box complete with studs for mud pump 12P-160 |
| 70 | 50000650Y | Hydraulic elevator BX4-75 |
| 71 | 80375-2 | Hose assembly TW press. (H1) for TDS-4S Top Actuator |
| 72 | 34000-02-01 | Safety valve Titan Class C (flanged connections, without return connections) |
| 73 | 1292350 | Stop for mud pump 12-P-160 |
| 74 | XD110001206 | Anti-wear plate for hydraulic tong |
| 75 | XD110001207 | Anti-wear plate for hydraulic tong |
| 76 | 85195 | Cylinder |
| 77 | 203121 | High pressure hose pos.20 |
| 78 | 1292362 | Hydraulic suction boxfor mud pump 12-P-160 |
| 79 | 91762 | Tube assembly for torque wrench PH85 top drive TDS-4S |
| 80 | 91761 | Tube assembly for torque wrench PH85 top drive TDS-4S |
| 81 | 80426 | Linear length transducer W/2M |
| 82 | 31022 | Hydraulic cylinder 80/50 for HYDRATONG automatic drilling tong |
| 83 | 142392 | Hydraulic motor |
| 84 | 2110668 | Service brake caliper lever pos. 2 for Drawworks 1320-UDBE |
| 85 | 2110044 | Brake shoe pin pos. 3 for Drawworks 1320-UDBE |
| 86 | 2110484 | Emergency brake caliper lever pos. 2 for Drawworks 1320-UDBE |
| 87 | 641101902 | Case |
| 88 | 1480247 | Anti-vibration hinge 4″ |
| 89 | 96507 | Cylinder of clamping of lateral jaws of automatic drilling key |
| 90 | 55908-8-8 | Quick coupling FD45-4 for elevator BX-4-75 |
| 91 | 99461 | Cylinder of a clamp of lateral jaws of an automatic drilling key 120/80 |
| 92 | 93124 | Hydraulic cylinder 100/50 |
| 93 | 0000096 | Balloon accumulator for air defense control station, 207 bar, 15 gal |
| 94 | 1502062SS | Piston 6 1/2″ for mud pump 12-P-160 |
| 95 | MB64-15 | Piston 6 1/2″ for mud pump 12-P-160 |
| 96 | 19206-80-30 | Working wheel 12″ for Mission Magnum pump |
| 97 | 19123-01-30A | Pump body for Mission Magnum pump |
| 98 | 19121-70-30 | Working wheel 11″ for Mission Magnum pump |
| 99 | 19121-90-30 | Working wheel 13″ for Mission Magnum pump |
| 100 | 1480065 | Vibration motor |
| 101 | 1480228 | Locking ring |
| 102 | 1490015 | Hinge pin |
| 103 | 472492 | Oil seal |
| 104 | BRK-D270 | Rubber seal kit |
| 105 | BWS-D270 | Rear wall seal |
| 106 | 60506 | The coil of the discharge line of the pump No. 1 |
| 107 | 665002003 | Suction elbow |
| 108 | M291295396 | Chain lubrication pump |
| 109 | M291292844 | External lubrication system |
| 110 | 7802327 | Coupling |
| 111 | 1292225 | Cross with filter assembly for mud pump 12-P-160 |
| 112 | 150854 | Sliding plate |
| 113 | 33091 | Roller bearing |
| 114 | 27479 | Roller bearing |
| 115 | 94324 | Pulley |
| 116 | 92993 | Rubber bumper |
| 117 | 152540 | Hydraulic swivel |
| 118 | 26775 | Swivel ring |
| 119 | 33082 | Roller bearing |
| 120 | 152553 | Rubber buffer |
| 121 | 33089 | Spring |
| 122 | 148594 | Bearing |
| 123 | 37461 | V-ring |
| 124 | 150848 | Spring |
| 125 | 35437 | Ball bearing |
| 126 | 10197 | Retaining ring |
| 127 | 12474 | V-ring |
| 128 | 29386 | Roller bearing |
| 129 | 91971 | Bushing flange |
| 130 | 54569 | Linear Length Transducer w/AVM |
| 131 | 447-B-357 | Intermediate tank vent valve |
| 132 | 55909-8-8 | Hydraulic quick coupling, male thread FD-45 #8 |
| 133 | 979798-7-C | Manometer coupling Mini-mess M16x2 – 1/4″ BSP, o-ring, stainless steel |
| 134 | 50004133-11 | Cylinder seal kit |
| 135 | XD110001547 | Slide plate for hydraulic tong |
| 136 | XD110001194 | Slide plate for hydraulic tong |
| 137 | XD110001125 | Slide plate for hydraulic tong |
| 138 | XD110001115 | Slide plate for hydraulic tong |
| 139 | XD110000943 | Slide plate for hydraulic tong |
| 140 | 662013009 | Shaft sleeve |
| 141 | 700030711 | Hex head bolt 1/2″x2″ |
| 142 | 123582 | Mounting plate |
| 143 | 76649 | Fan suction gasket |
| 144 | 76643 | Fan shroud |
| 145 | 72396 | Duct plug |
| 146 | 140966-86-20-20 | Loop power cable |
| 147 | 30174375-400-50-220 | Engine |
| 148 | 30170945-86-20-20 | Cable control cable |
| 149 | 122705-86-1-2 | Loop hydraulic cable |
| 150 | 30157486 | Moisture separator mounting frame |
| 151 | 107590 | Air supply hose 10×25 ft. |
| 152 | 107588-20 | Hose clamp |
| 153 | 30174380 | Mounting plate |
| 154 | 30156360-L | Terminal box |
| 155 | 30174660 | Terminal box |
| 156 | 2110298 | Mandrel for removing the wear sleeve |
| 157 | 2110263 | Mandrel for installation of anti-wear seal |
| 158 | 2111575 | Drift for installation of the bushing of the rotary lever of the brake caliper |
| 159 | 2111576 | Drift for installation of the bushing of the rotary lever of the brake caliper |
| 160 | 2111573 | Drift for installation of the bushing of the rotary lever of the brake caliper |
| 161 | 2110493 | Mandrel for installation of seal |
| 162 | 2110496 | Mandrel for removal of the bushing |
| 163 | 2110659 | Hinge pin retainer plate |
| 164 | 2110497 | Gasket ring |
| 165 | 128996 | Tilt Strut Assy pos 200 for TDS-4S Top Actuator |
| 166 | 90793-Q | Drive gear for SVP electric motor TDS-4S |
| 167 | 2112458 | Disc brake assembly for drawworks 1320-UDBE |
| 168 | 123285 | Top separator ring |
| 169 | 200662-1 | Hinged jaw assembly, 8 1/2″-17″ |
| 170 | 51603-16-S | Lock pin |
| 171 | 77034 | Lifting cylinder fork pipe clamp PH85 |
| 172 | 115341 | Adapter protective plate |
| 173 | 50010-20-C5D | Hexagon bolt with cotter hole |
| 174 | 7817600-458 | O-ring |
| 175 | 642183-А | Gear Coupling Housing |
| 176 | 620967-1 | Gear coupling |
| 177 | YS-4757 | Seal for drawworks 1320-UDBE |
| 178 | 7600042 | Washer |
| 179 | 622868-3 | Adjusting gasket |
| 180 | 622868-2 | Adjusting gasket |
| 181 | 622868-1 | Adjusting gasket |
| 182 | 622868 | Adjusting gasket |
| 183 | 618947 | Outer clip |
| 184 | 612372 | Internal clip |
| 185 | 626360-А | Bearing |
| 186 | 612361-А | Roller holder |
| 187 | ZS-7080 | Bearing |
| 188 | 612738-А | Roller bearing |
| 189 | 619319-А | Switch Clutch Ring |
| 190 | 612747 | Tube seal |
| 191 | 641013 | Outer clip |
| 192 | 641019 | Load ring |
| 193 | 641157 | Internal clip |
| 194 | 641440 | Adjusting gasket |
| 195 | 645856 | Load ring |
| 196 | 645895 | Sleeve |
| 197 | 7805052 | Grease dispenser |
| 198 | 6803020 | Sleeve |
| 199 | 13381 | Bolt with hexagon head М10х30 |
| 200 | 37591 | Bolt М10х140 |
| 201 | 32969 | Locking screw M6x10 |
| 202 | 95714 | Ball bearing |
| 203 | 25606 | Bolt М5х25 |
| 204 | 25614 | Bolt М6х20 |
| 205 | 16401-6 | Dryer |
| 206 | 19122-01-30A | Pump casing |
| 207 | 030639 | Sealing ring |
| 208 | 040989 | Sealing ring |
| 209 | 717400 | Sealing ring |
| 210 | 062229 | Bearing |
| 211 | 062230 | Seal |
| 212 | 030617 | Sealing ring |
| 213 | 062276 | Seal |
| 214 | 030583 | Sealing ring |
| 215 | 040999 | Retaining ring |
| 216 | 717315 | Lower sealing ring |
| 217 | 717316 | Top sealing ring |
| 218 | 062220 | Seal |
| 219 | 062238 | Bearing |
| 220 | 030609 | Sealing ring |
| 221 | 1292292 | Irrigation system sleeve bushings, 1-1/2″x37″, assemblyfor mud pump 12-P-160 |
| 222 | 1282036 | Irrigation hose bushings, 1″x30″, assemblyfor mud pump 12-P-160 |
| 223 | 94764 | Counterweight cylinder |
| 224 | 51404-18-S | Split pin |
| 225 | 50520-C | Nut |
| 226 | 30171396 | Finger |
| 227 | 30171395 | Finger |
| 228 | 1502062XT | Piston 6 1/2″ for mud pump 12-P-160 |
| 229 | 1283191 | Gasket |
| 230 | 1292064 | Gasket |
| 231 | 1292079 | Gasket |
| 232 | 1292095 | Gasket |
| 233 | 1292096 | Gasket |
| 234 | 1292097 | Gasket |
| 235 | 1292227 | Gasket |
| 236 | 1275158 | Gasket |
| 237 | 1284106 | Gasket |
| 238 | 1292076 | Gasket |
| 239 | 2302019 | Coupling |
| 240 | 59044P08A060 | High pressure hose assembly |
| 241 | 59026P08A060 | High pressure hose assembly |
| 242 | 59026P08A012 | High pressure hose assembly |
| 243 | 59024P230008 | High pressure hose assembly |
| 244 | 59024P230021 | High pressure hose assembly |
| 245 | 59044P230020 | High pressure hose assembly |
| 246 | 58892P290069 | High pressure hose assembly |
| 247 | 58592P230105 | High pressure hose assembly |
| 248 | 58572P230105 | High pressure hose assembly |
| 249 | 150026 | Mandrel |
| 250 | 150028 | Blade |
| 251 | 150030 | Spring |
| 252 | 150027 | Blade holder |
| 253 | 23230 | Screw |
| 254 | 149267 | Blade setting tool |
| 255 | 167200 | Locking plate 95x15x1.5 |
| 256 | 147054 | Bolt М8х20 A4 |
| 257 | 159131 | Locking plate 78x15x1.5 |
| 258 | 185908 | Stop plate |
| 259 | 165074 | Stop plate |
| 260 | 147051 | Shaft 80х96 |
| 261 | 147236 | Shaft 60×112 |
| 262 | 185841 | Spherical bearing CB80 |
| 263 | 147237 | Sleeve 60/75х100 |
| 264 | 147053 | Rod rod 120/CH90x137.5(87.5) M53x3 |
| 265 | XD110002117 | Stabilizer bolt |
| 266 | 34259 | Locknut М36 |
| 267 | 26652 | Nut М36 HDG |
| 268 | 26565 | Washer М36 VG |
| 269 | XD110001555 | Stabilizer plug |
| 270 | 95702 | Disc spring |
| 271 | XD110001688 | Anti-wear plate |
| 272 | XD110001694 | Stove |
| 273 | 25143 | Bolt М12х30 mm |
| 274 | 99707 | Bushing AMPCO 18 |
| 275 | 27084 | Bolt М10х40 mm |
| 276 | 25141 | Bolt М12х20 mm |
| 277 | XD110001691 | Stop plate |
| 278 | XD110001286 | Retaining bolt |
| 279 | XD110001692 | Retaining bolt |
| 280 | XD110001721 | Stop plate |
| 281 | XD110001722 | Cylinder bolt |
| 282 | XD110001689 | Stop plate |
| 283 | 19006 | Bolt M10x16 mm |
| 284 | 25673 | Bolt М16х70 mm |
| 285 | XD110001784 | Clamp |
| 286 | 215807 | Cylinder cover lower cylinder, 120/KM60x135, M125x2 |
| 287 | 30182002-26 | Face seal pin |
| 288 | 50208-B | Nut 1/2″-13 |
| 289 | 17469489-001 | Sealing element for universal preventer 18-3/4″ |
| 290 | 83542 | Pressure regulator |
| 291 | 87234 | Pressure regulator assembly |
| 292 | 87204 | Shuttle valve |
Field Failure Repair Case Studies
Case 1: TDS 4S Leveling Cylinder Seal Leakage
A Varco TDS 4S top drive experienced hydraulic fluid leakage from a worn leveling cylinder seal kit (PN 85678), causing unstable top drive positioning. Installing the OEM seal kit restored hydraulic pressure, eliminated leakage, and resumed accurate top drive leveling for drilling operations.
Case 2: Drawworks Emergency Brake Cylinder Failure
A 1320-UDBE drawworks paired with the TDS 4S top drive suffered a faulty emergency brake cylinder (PN 2110001), risking uncontrolled drill string movement. Replacing the OEM brake cylinder and testing brake functionality restored safe emergency stopping capacity.
Case 3: TDS 4S Top Actuator Flow Switch Malfunction
A defective 0.25 GPM flow switch (PN 30155689-2) disrupted top drive hydraulic flow control, leading to inconsistent rotary speed. Swapping in the OEM flow switch fixed hydraulic regulation, stabilizing top drive performance and drilling torque output.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts exclusively compatible with the Varco TDS 4S top drive? | Yes, the core parts are engineered specifically for the Varco TDS 4S top drive, with additional cross-compatible parts for paired NOV/Shaffer BOPs, mud pumps, and drawworks. |
| Do these seal kits meet API 7K high-pressure drilling standards? | Absolutely, all hydraulic and BOP seal kits comply with API 7K standards, rated for up to 7500 PSI hydraulic pressure for offshore drilling use. |
| Can these parts be used for emergency top drive field repairs? | Yes, these OEM-certified spares are designed for quick field replacement, ideal for emergency repairs to minimize costly drilling downtime. |
Procurement Guidance
This Varco TDS 4S top drive spare parts catalog serves as both a formal oilfield procurement benchmark and a hands-on technical troubleshooting reference, designed to eliminate the risks of substandard aftermarket parts that fail prematurely, reduce long-term top drive maintenance expenses, and uphold the safety and operational reliability of your rotary drilling system. Every part is a verified OEM-certified component that guarantees perfect fitment, consistent high-load performance, and full compliance with API, IADC, and Varco/NOV original quality standards, making it the definitive resource for maintaining Varco TDS 4S top drives and paired drilling equipment.
