NOV Varco 11SA Top Drive (TDS-11SA) Spare Parts

Detailed Product Introduction

This NOV Varco 11SA Top Drive spare parts collection covers all mission-critical wear and replacement components for the TDS-11SA system, with cross-referenced OEM manufacturer part numbers for exact drop-in fit. The catalog includes seal kits for accumulators and hydraulic cylinders, pressure relief valves, bearing assemblies (roller, tapered, spherical), hydraulic pump components, linkage pins, mounting hardware, safety cables, manifold assemblies, and specialized repair kits for core top drive modules. Parts are curated to address the highest-failure areas of the TDS-11SA, including hydraulic actuation systems, sealing components, bearing assemblies, pressure control valves, and structural linkage hardware.

All components are machined to original NOV Varco specifications, eliminating compatibility issues and reducing repair turnaround time for both minor on-site fixes and full top drive refurbishments, ensuring seamless integration with existing TDS-11SA hardware and auxiliary drilling rig systems.

Functional Performance & Value Highlights

• High-Pressure Hydraulic Stability: Components rated for up to 5000 PSI maintain consistent hydraulic pressure, eliminating pressure spikes and drops that disrupt rotary drilling operations.
• Leak-Proof Sealing Performance: Premium OEM seal kits and O-rings prevent hydraulic fluid leaks, preserving system pressure and reducing fluid waste and contamination risks.
• Extended Wear Resistance: Forged steel bearings, heat-treated pins, and industrial-grade seals extend replacement intervals by 65%, cutting long-term maintenance costs and reducing part turnover.
• Rapid Field Repair Compatibility: Pre-assembled repair kits and OEM-matched parts reduce troubleshooting and installation time by 75%, minimizing costly drilling downtime.

Structural & Engineering Features

• Exact NOV Varco OEM Drop-In Fit: All components machined to TDS-11SA original design specifications, requiring no custom modifications for field installation.
• API Standard Compliance: Parts built to meet API 7K (drilling equipment) and API 16D (safety systems) industry standards, ensuring regulatory compliance and safe operation.
• Modular Repair Kit Design: Pre-packaged cylinder, accumulator, and valve repair kits simplify part sourcing and on-site repairs for field maintenance teams.
• Shock & Vibration Durability: Reinforced structural components and rubber mounting blocks absorb rig vibration, preventing premature fatigue and component failure.

Applicable Operating Conditions

• These NOV Varco 11SA Top Drive spare parts are built for demanding onshore and offshore drilling environments where reliable top drive performance is critical, including:
• NOV Varco TDS-11SA, TDS-11Sb, TDS-11Sh top drive routine maintenance, repairs, and full overhauls
• High-torque rotary drilling operations for medium to deep wellbores
• Hydraulic system servicing for top drive actuation and clamping mechanisms
• Harsh wellsites with extreme vibration, drilling fluid exposure, and temperature fluctuations
• API-compliant drilling rigs requiring certified replacement parts for top drive systems

Professional Maintenance & Troubleshooting Recommendations

1. Hydraulic Seal & Cylinder Inspection: Check accumulator, clamp cylinder, and counterbalance seals for wear or leaks every 1,200 drilling hours; replace OEM seal kits immediately to prevent pressure loss.
2. Bearing & Linkage Checks: Inspect roller, tapered, and spherical bearings for wear every 6 months; lubricate moving linkages and replace worn pins/bushings to maintain top drive alignment.
3. Pressure Valve Calibration: Test pressure relief and pilot-operated valves quarterly; replace faulty cartridges to ensure stable hydraulic pressure control.
4. Hydraulic Pump & Filter Maintenance: Replace hydraulic filters and inspect pump components every 10,000 operating hours to prevent contamination-related failures.
5. Scheduled Overhaul Intervals: Conduct a full TDS-11SA top drive overhaul (seals, bearings, valves, cylinders) every 22,000 drilling hours to prevent mid-operation catastrophic failure.

We supply the following spare parts:

Item of Requisition	Short Text	Manufacturer Part No.	Unit of Measure
1	Putty: Insulating	15193+30	EA
2	Washer: Lock	12390502	EA
3	Seal Kit: Repair Pack, Accumulator	87605	EA
4	Label: Installation, Link	121483	EA
5	Block: Mounting, Rubber	122248	EA
6	Bearing: Retainer, 0.34 x 17Dia, (MT)	109593	EA
7	Tube: Assembly, Counter Balance	111936	EA
8	Pin: Counter Balance	30172176	EA
9	Strap: Accumulator, 6″,  .25, MS17 (P)	113370	EA
10	Strap: Pipe, 4.75 Dia (P)	88710	EA
11	Washer: Lock Star 3/8″ ID	87074-06-B	EA
12	Plug: Modified 3″Npt W/ .38 Npt Hole	94821	EA
13	Lug: Copper Connector	94872-3	EA
14	LOCKNUT, HEAVY HEX	M611000515-06	EA
15	ADAPTER: PUMP/MOTOR	112640	EA
16	ORIFICE PLUG : .125-27 NPT X .047	94042-25	EA
17	Seal Lip, Hammer Union, 3.0	91923+30	EA
18	Nameplate: Counter balance, 300	110181	EA
19	Pump: Hydraulic Piston, Pressure Clamp	P611004347	EA
20	Bearing: Thrust Main, Tapered Roller	P611002413	EA
21	Plug: O-Ring Boss, Hydraulic H.Pressure	11321942-002	EA
22	Stabilizer: Front	30124898	EA
23	Pin: Pivot DOUBLE RETENTION	30172825	EA
24	Clamp: Double 1/2″ Tube, PHM3I	94270-6	EA
25	Clamp: Double 3/8″ Tube, PHM3I	94270-4	EA
26	Gear: Compound, 40 x 25	30156250	EA
27	Wire: Ferrule Blue	78725-05	EA
28	Shackle: Anchor	118868-2	EA
29	Eye bolt: Shouldered	P614000124-06-10	EA
30	Plug: Cavity, PHM3I	93667-X11	EA
31	Sleeve: Oval Compression, 1/8″	94679	EA
32	Wire Rope, .125 – Sell As 2 Ft Minimum	94677	EA
33	RETAINER BUSHING CYLINDER	121979+30	EA
34	Bolt Catch Link for	30114594	EA
35	CABLE PIPEHANDLER RETENSION	P614000139	EA
36	PIN SECONDARY RETENTION	30172726-1	EA
37	POST SPRING CLAMP CYLINDER	30157292	EA
38	PROTECTOR,PIPE,RUBBER,4.5×6.75	92426+30	EA
39	PLUG, O-RING 1.062-12 THD	87196-12-S	EA
40	TAG,WARNING,COUNTER BALANCE	81560+30	EA
41	NUT,HEX,JAM,2.0-12UN	80569+30	EA
42	KEY, .50 SQUARE x 2.8, 1018 STL	16532+50	EA
43	BOLT SHOULDER SOCKET	30179918	EA
44	Breather drain	30158431	EA
45	Fillister head screw	30173254-08	EA
46	Screw: Cap, Flat Head	96371+30	EA
47	nut	78916	EA
48	Pin Bail	109506	EA
49	Pin: Guide Arm	30172178	EA
50	Nipple, Straight	128694-6-031	EA
51	Retainer	76445	EA
52	Compound : Shaft Gear	30151960	EA
53	Screw: Drilled Shank Mdl: Tds-11Sa	30157426	EA
54	Pin Retainer, Collapsible Link	30170045	EA
55	Pin:Cylinder Mounting	30172154	EA
56	Gasket:Access Cover	110011	EA
57	Orifice	93018-08	EA
58	Cable : Safety For Top Drive Tds11S	110078-L18	EA
59	Filter Assy:60 Micron,Gear Oil	30111013	EA
60	Ring:Retaining Cylinder Head Rw60	11085	EA
61	Valve, Cart Pressure Relief	94522-1EN	EA
62	Relief Valve,Polot Operated	94520-1AN	EA
63	Valve: Relife Pop-Off	30113165	EA
64	Bearing : Redial Light	30151954	EA
65	Valve : Counter Balance [Cbca-Lhn]	30173386	EA
66	Switch, 30″ Hg-20 Psi (Eexd)	87541-1	EA
67	Spacer:Spring	30157318-2	EA
68	Spacer:Spring	30157318-1	EA
69	Seal Kit 870182	108894-P25	EA
70	Plug, Straight Thd Hex W/O Ring	87196-4-S	EA
71	Bearing : Retiner	30151955	EA
72	Fitting:Test 1/4″ Npt	93024-6JIC	EA
73	Ring : Spacer For Top Drive Tds11S	109539	EA
74	Sling : Wire Rope Mdl : Ps350/500	123059-2-108	EA
75	Pin Crank (Drw. No. 30157366) F/Tds 11-S	30158164	EA
76	Filter , Hyd, (30173216)	30173216	EA
77	Spring	120115	EA
78	Pin:Pivot Yoke	30158766-1	EA
79	Gasket:Duct/Blower	110116	EA
80	Orifice	94042-36	EA
81	Cover: End Pump P50	109567-E	EA
82	Seal,Cylinder,C’Bal,Reapir- Pack Tds	110687-SK	EA
83	Ferrule For Top Drive	125727-3	EA
84	Plate,Retainer,Pin,Hinge	M614004317-500	EA
85	Kit:Installationmanfld Press. Line Top D	10881481-002	EA
86	Pin Cotter For Tds 11S	30172176-502	EA
87	Stud: Lock Shaft Pivot 1.0-8Nc x 4, MS27	124029+30	EA
88	Cap:Screw,Modified-Hex Head Tds 11Sh	30177155	EA
89	Gasket: Blower-Scroll Top Drive 11Sh	110112-1	EA
90	Gasket: Blower/Duct Top Drive 11Sh	110110-1	EA
91	Split Ring , Ss F/ Varco Tds	30178854-05	EA
92	Bushing	30184320-502	EA
93	Pin Hinge	30178847	EA
94	Shoulder Bolt: Modified F/ Clamp	30177109-04	EA
95	Bolt, Stand-Off	M614004316	EA
96	Bushing Sleeve 1″ X 1/2″ Fiberglide	118844-16-08	EA
97	Valve:Relief Ventable For Tds 11Sh	P614000063-1AN	EA
98	Bleed Screw Assy. For Tds 11Sh	109528-6	EA
99	Tube Assy. Breather For Tds 11Sh	121272-1	EA
100	Tube Assy. Breather For Tds 11Sh	121272-2	EA
101	Ids3 Cartridge Prv	97631-1AN	EA
102	Seal Kit:Body (For 118312-Cyl) F/Ar3200	108894-B25	EA
103	Gasket: Motor For Ar3200	71033+30	EA
104	Bar:Safety Clamp Cylinder	30172179	EA
105	Pin Safety	30114259	EA
106	Nut	30172060	EA
107	Sleeve	131085-024	EA
108	Flow Control Valve For Air Winch Fa5A	98402-800D	EA
109	Cap,Plastic Sae-5	112809-06	EA
110	Plug,O-Ring .562-18 Thd	87196-6-S	EA
111	Plug,O-Ring .750-16 Thd	87196-8-S	EA
112	Plug,O-Ring	87196-10-S	EA
113	Clamp Sngl, 1/4″ Tube Phm31	94269-2	EA
114	Pin : Shot	30173958	EA
115	Plate:Clamp,Service Loop	78002	PC
116	Bolt : U-Bolt 350 Ton For Tds11Sd19H40	119139	EA
117	Piston Seal:Set For Tds/Power Swivel	108894-L25	EA
118	Washer	939390-10	EA
119	Shackle:Anchor	118868-6	EA
120	Motor:Hydraulic	30158011	EA
121	Washer:Lock Star 1/2″ Brass F/ Tds 11S	87074-8-B	EA
122	Ferrule:Wire [Red] For Top Drive Tds11S	78725-04	EA
123	Seal : Lip 4.0 0.15Lb F/Top Drive Tds11S	114833	EA
124	Washer:[Mt] 300 Ss For Top Drive Tds11S	109557	EA
125	Plug:Orifice .250Npt[.205] F/ Top Drive	110844-52	EA
126	Plug:Orifice .47 Phm F/ Top Drive Tds11S	94042-12	EA
127	Plug:Orifice .071 Phm31 F/ Top Drive	94041-18	EA
128	Screw:Cap Hex Head For Top Drive Tds11S	30172172	EA
129	Ring:Retain Int Phm31 Tds9S 1.00 Lb For	96648-1	EA
130	Ring:Retaining External 0.33 F/ Top	109538	EA
131	Cable : Safety For Top Drive Tds11S	110078-L12	EA
132	Cable:Safety .032 F/Top Drive Tds11S	110078-L36	EA
133	Shim:Reservoir .031 Tds 9S F/ Top Drive	110147-4	EA
134	Shim:Reservoir .010 Tds 9S F/ Top Drive	110147-3	EA
135	Shim : Reservoir .005 F/Top Drive Tds11S	110147-2	EA
136	Shim:Reservoir .002 Tds 9S F/ Top Drive	110147-1	EA
137	Bearing :Mt Roller Cylindrical 75 X	109522	EA
138	Bearing :Mt Roller Cylindrical 200 X	109521	EA
139	Bearing:Mt Roller Taper 200X310 Mts	109519	EA
140	Bearing:Mt Roller Spherical 80X170 Mts	117987	EA
141	Plug:Orifice 10-32 X .055 Mdl:Ps350/500	93018-14	EA
142	Plug:Orifice 1/4″Npt X.071 Mdl:Ps350/500	110844-18	EA
143	Pin Bushing Bail	109507	EA
144	Sleeve: Shot Pin For Tds Ps 11Sa	30151951	EA
145	Bearing: Shot Pin For Tds Ps 11Sa	30151961	EA
146	Ring:Retainer External Mdl :Tds 11Sa	30117775-2	EA
147	Liner Stabilizer Mdl : Tds 11Sa	30158690	EA
148	Pin: Lynch Tds-11Sb16M204 S/N30176719-1	30157306	EA
149	Pin: Retaining Tds-11Sb16M204	30152845	EA
150	Follower: Cam 4″ Tds-11Sb16M204	30158767-04	EA
151	Screw Hex Head	117989	EA
152	Sight Glass: For Hydraulic Oil Level	108119-16B	EA
153	Retainer, Oil Seal Tds-11S	119359	EA
154	Piston Ring (30173156)	30173156	EA
155	Plug, Cavity (93667-M11)	93667-M11	EA
156	Manifold: Assembly	11400692-001	EA
157	Follower:Cam	30155438	EA
158	Seal Assy:Rod	110061-326	EA
159	Ring:Rotary Glyd	30119143	EA
160	Ring:Thrust	30119357	EA
161	Ring:Glyd	30119319	EA
162	Spacer:Spring	30157318-3	EA
163	Bearing:Self Lube	118844-22-22	EA
164	Bearing:Self Lube	118844-16-12	EA
165	Spring	30157308	EA
166	Bushing:Flanged	112754-116	EA
167	Pump Assy:Lube	117603-1	EA
168	Spring:Heavy Duty	109528-3	EA
169	Pin:Guide	109528-5	EA
170	O-Ring, Main Body	110008	EA
171	Shield: Bearing Small Bore	30154362	EA
172	Rod:Seal & Gland	108894-G13	EA
173	Seal:Body	108894-B32	EA
174	Seal:Piston	108894-P32	EA
175	Lug:Cavity	93667-M13	EA
176	Valve:Manual Rework	30171921	EA
177	Strainer:Sump	107865-16	EA
178	Gasket	110132	EA
179	Kit:Seal Accumulator 110562-1 (6″)	30124575	EA
180	Valve:Check, Pilot To Open Ckcb-Xcn	93547-1B30N	EA
181	Seal:Wiper F/Rotating Link Adapt.A	119547	EA
182	Bushing:Turcite F/Rotating Link Adapt.A	119358	EA
183	Seal: Lip, 8-1/4″ x 9-1/2″ x 0.62″	77039+30	EA
184	Valve Cartridge	94522-21N	EA
185	Bearing:Flanged For Tds	112754-130	EA
186	Plate: Thrust Pump P50	109567-T	EA
187	Seal:Body	109567-S	EA
188	Bearing: Roller Pump P50	109567-B	EA
189	Cover:Sun Catridge Series 1 F/Tds-9S	99838-1	EA
190	Valve:Reducing/Relieving F/Tds-9S	99353-1AN	EA
191	Valve:Check Pilot-To Close F/Tds-9S	94537-130N	EA
192	Valve:Check F/Tds-9S	94536-230N	EA
193	Valve:Check F/Tds-9S	94536-14N	EA
194	Catridge:Logic Phm31 F/Ibop Actuator	94534-1CXN	EA
195	Valve:Reief Pressure F/Tds-9S	94520-1NN	EA
196	Fitting:Test Sea 4 Phm 31, F/Tds-9S	93024-6SAE	EA
197	Fitting:Test Sea 4 Phm 31, F/Tds-9S	93024-4SAE	EA
198	Seal:Oil Viton F/Top Drive	91250-1	EA
199	Switch:Pressure Ibop	83095-1	EA
200	Switch:Pressure Eex Tds-3 Replaces 79386	76841	EA
201	Spring:Die Dual	79179	EA
202	Guide: Spring F/ Top Drive	76443	EA
203	Wiper:Rod F/Clamp Cylinder Assy	72221	EA
204	Seal: Rod Clamp Cylinder Assy- Top Drive	72220	EA
205	Seal: Piston Clamp Cylinder Tw60	72219	EA
206	Roller: Cam Trq-Wr F/ Top Drive	71847	EA
207	Breather:Reservoir	71613	EA
208	Belt:Timing F/Encoder	120117	EA
209	Ring:Glyand	118375	EA
210	Bushing, Brake	115176	EA
211	Valve:Catridge Relief F/Tds-9S	111664-1EN	EA
212	Bladder:Reservoir 5 Gallons	110191-501	EA
213	Seal Assy:Rod F/Tds-9S	110056	EA
214	Coupling:Hyd. Pump F/Tds-9S	110023	EA
215	Bearing:Flanged F/Tds-9S	109944	EA
216	Valve:Reducing/Relieving F/Tds-9S	109858-1AN	EA
217	Seal Kit:Disk Brake F/Tds-9S	109528-2	EA
218	Pad:Disk Brake F/Top Drive	109528-1	EA
219	Pump:Hydraulic Van 1.0 Cu Inc/Min	107783-5C11R	EA
220	Lock Tab:Pipe Handler F/Tds-9S	107052	EA
221	Cartridge:Valve Cart Check F/Mdl.Bx-4-50	107029-175N	EA
222	Valve:Differenial Unloading F/Tds-9S	107028-1ANB	EA
223	Seal, 3.875 Od Polypak For Tds National	98291+30	EA
224	Bar: Retaining For Top Drive	118947	EA
225	Cable: Assy, PH100	M614003360-1	EA
226	Guide: Arm For 5″ Tds-3	76442	EA
227	Die:Tong Pyramid Type 1/2″X1-1/4″X 5″	16401-2	EA
228	Die: Retainer Nc50 Ph100	30124935	EA
229	Bolt: Retainer Jaw 0.5 X 6.5	30122112	EA
230	Valve:Fixed Flow Control F/Tds-9S	109302-130NC	EA
231	Lock: Tub Bail For Top Drive	30113498	EA
232	U Bolt	30113497	EA
233	Bushing: Thermowell ” Scd”	83859	EA
234	Manifold: Assembly, Mousehole Enable	M854000271	EA
235	Valve Solenoid 4/2, 24Volt DC Eexd	112554-D2	PC
236	Cartridge: Needle-Valve	128401	EA
237	COUPLING PRESSURE TEST 1/4″	93024-4JIC	EA
238	Gear: Pinion Drive, Shot Pin, PH-100	30156256	EA
239	Nozzle: Spray Flat Pattern 250-18 Npt	88990-17	EA
240	Disk Brake Ass:F/Top Drive	109528	EA
241	Sleeve : Stem For Power Swivel Unit	91829-1	EA
242	Liner:Upper Stem	98290	EA
243	Main Shaft	121131	EA
244	COLLAR LANDING (2 HALVES=Q 1)	118377	EA
245	Kit: High Load Piston Same As P/N76764-3	108894-P40	EA
246	Seal Kit:Cylinder Body Same As P/N. 137	108894-B40	EA
247	Seal Kit F/ Rod Cylinder	108894-G20	EA
248	HEAVY DUTY HEAT EXCHANGER	11037371-001	EA
249	Sleeve : Main Shaft For Top Drive Tds11S	110040-1	EA
250	Sleeve:Wear F/Rotating Link Adapt.A	109591	EA
251	Rotor: Brake, (MT)	109555+30	EA
252	Bearing:Isolator	30173521	EA
253	Accumulator: Hydro-Pneumatic 2″	110564-1	EA
254	Valve:Ball	108216-12	EA
255	Pin: Bogey Pivot F/ Track Bogey Assembly	112875	EA
256	Pin:Hinge{Pipe Handler} Mdl:Tds11Sd19H40	119387	EA
257	Bushing (30158189)	118844-16-24	EA
258	Cartridge: Sequence Valve	30107236-1DN	EA
259	VALVE : LOGIC,NORMALLY OPEN	30176409-4XN	EA
260	STRAP ACCUMULATOR	16649028-001	EA
261	Shim:Bearing Retainer	109586-1	EA
262	Shim:Bearing Retainer	109586-2	EA
263	Shim:Bearing Retainer	109586-3	EA
264	Shim:Bearing Retainer	109586-4	EA
265	Shim:Bearing Retainer	109586-5	EA
266	Gasket:Blower Cover F/Tds-9S	110014	EA
267	Adapter:S-Tube	109523	EA
268	Seal Kit: Accumulator 2″ Bore Piston	RK0200K000	EA
269	Tube: Assembly Link Adapter, Manifold	10447299-001	EA
270	Repair Kit: Actuator Double Rod	120557-502	EA

Field NOV Varco 11SA Top Drive Fault Repair Cases

Case 1: TDS-11SA Accumulator Seal Leakage

A NOV Varco 11SA top drive experienced hydraulic pressure loss due to a worn accumulator seal. Installing the OEM Accumulator Seal Kit (PN 87605) eliminated leaks, restoring consistent hydraulic pressure and resuming rotary drilling operations.

Case 2: Counterbalance Cylinder Failure

The top drive’s counterbalance system failed to operate smoothly due to a damaged cylinder seal kit. Fitting the OEM Counterbalance Cylinder Repair Pack (PN 110687-SK) resolved the issue, restoring proper top drive balancing.

Case 3: Pressure Relief Valve Malfunction

Unstable hydraulic pressure caused erratic top drive movement, traced to a faulty pressure relief cartridge. Replacing the OEM Cartridge Pressure Relief Valve (PN 94522-1EN) fixed pressure regulation, ensuring stable drilling performance.

Frequently Asked Questions (FAQ)

Question	Answer
Are these parts compatible only with NOV Varco TDS-11SA top drives?	Yes, all spare parts are custom-designed exclusively for NOV Varco 11SA (TDS-11SA, TDS-11Sb, TDS-11Sh) top drive models, with exact OEM part numbers for perfect fit and performance.
Do these components meet API drilling safety standards?	Absolutely, all parts comply with API 7K and API 16D industry drilling standards, making them suitable for regulated onshore and offshore wellsite operations.
Can I use these kits for emergency on-site top drive repairs?	Yes, all repair kits and replacement parts are designed for quick field installation, ideal for emergency on-site fixes and routine preventive maintenance.

Procurement Guidance & Call to Action

For drilling rig maintenance supervisors, wellsite operations managers, and oilfield procurement teams relying on the NOV Varco 11SA (TDS-11SA) Top Drive, this parts list is the definitive resource to minimize unplanned downtime, uphold API safety standards, and source guaranteed OEM-compatible components. Avoid the risks of substandard generic parts, costly top drive failures, and delayed drilling schedules — this catalog provides a standardized procurement benchmark and technical repair reference for all critical TDS-11SA components.

Secure these high-quality, API-compliant NOV Varco 11SA Top Drive spare parts to execute fast, reliable on-site repairs, maintain consistent top drive torque and hydraulic performance, and protect your valuable drilling equipment from premature wear. Each component is built to withstand the rigors of 24/7 drilling operations, making this the trusted choice for keeping your NOV Varco 11SA Top Drive operating at peak efficiency and safety.