Detailed Product Introduction
This LS NOV Drill Winch spare parts collection covers all mission-critical wear and replacement components for the winch’s hydraulic system, brake assembly, bearing supports, sealing system, and control hardware, with cross-referenced NOV OEM part numbers for exact drop-in fit. The catalog includes air/water connections, high-pressure gaskets, hydraulic hose assemblies, precision bearings, seal kits, brake pad assemblies, quick release valves, pressure relays, oil pump assemblies, accumulators, pressure gauges, high-pressure filters, and directional control valves. Parts are curated to address the highest-failure zones of LS NOV Drill Winches: hydraulic sealing, brake actuation, pressure regulation, bearing support, and fluid control circuits, ensuring full compatibility with the winch’s hoisting and braking mechanisms.
Functional Performance & Value Highlights
- High-Pressure Hydraulic Compatibility: Seals, valves, and hoses rated for up to 5000 PSI maintain hydraulic system integrity, eliminating leaks and preserving hoisting power.
- Heavy-Duty Brake Reliability: Premium brake pad assemblies and return springs deliver consistent, responsive braking, ensuring safe drill string control and preventing runaway loads.
- Wear-Resistant Bearing Design: Precision-machined bearings and spacers handle extreme radial/axial hoisting loads, extending service life by 75% and reducing replacement frequency.
- Precision Pressure Control: Calibrated pressure relays and proportional valves maintain stable hydraulic pressure, enabling smooth, precise winch operation.
Structural & Engineering Features
- OEM Drop-In Fit: No custom modifications required for field installation, speeding up repairs and minimizing costly rig downtime.
- API 7K & ASME Compliance: All load-bearing and hydraulic components meet industry safety and performance standards, ensuring regulatory adherence globally.
- Contamination Resistance: Sealed bearings and high-pressure filters prevent hydraulic fluid contamination, protecting internal components from premature wear.
- Vibration & Shock Resistance: Rugged construction withstands rig vibration and hoisting shock loads, preventing mechanical failure during heavy operations.
Applicable Operating Conditions
These LS NOV Drill Winch spare parts are engineered for demanding drilling hoisting environments, with ideal use cases including:
- Routine maintenance, emergency repairs, and full overhauls of LS NOV Drill Winch units
- Onshore land rigs, offshore jack-up rigs, and semi-submersible drilling units
- High-load hoisting operations with extreme drill string weights and high-pressure hydraulic systems
- API-compliant drilling installations requiring certified winch safety and performance parts
Professional Maintenance & Troubleshooting Recommendations
- Hydraulic Seal Inspection: Check shaft seals, O-rings, and gaskets for wear or leaks every 600 drilling hours; replace worn components to prevent hydraulic fluid loss.
- Brake System Maintenance: Inspect brake pads, return springs, and pivot pins quarterly; replace worn pads and adjust components to maintain optimal braking force.
- Bearing & Spacer Checks: Lubricate bearings via grease fittings every 300 operating hours, and inspect for wear every 8,000 hours to prevent hoisting vibration.
- Pressure System Calibration: Test pressure gauges and control valves every 6 months to ensure accurate pressure regulation and stable winch operation.
- Scheduled Overhaul: Conduct a full LS NOV Drill Winch overhaul (seals, bearings, brakes, valves) every 35,000 operating hours to prevent catastrophic hoisting failure.
- We supply the following spare parts:
| Items | Desciption | Part Number |
| 1 | AIR AND WATER CONNECTION | 30178907-295 |
| 2 | GASKET | 30178907-1028 |
| 3 | HOSE ASSY | 30178907-1771 |
| 4 | NUT | 30178907-25 |
| 5 | SHIM SET | 30178907-1119 |
| 6 | SEAL 55X80X12 | 30178907-1124 |
| 7 | BEARING SPACER | 30178907-1126 |
| 8 | BEARING | 30178907-1127 |
| 9 | SHIM SET | 30178907-1132 |
| 10 | BEARING RETAINER 55 | 30178907-1139 |
| 11 | HOUSING CLAMP RING | 30178907-1140 |
| 12 | SEAL RETAINER | 30178907-1146 |
| 13 | QUICK RELEASE VALVE KPM-L6 | 30178907-1318 |
| 14 | PRESSURE RELAY VALVE TJQ-L15 | 30178907-1319 |
| 15 | OIL PUMP ASSEMBLY ZX09-CB-100 | 30178907-1876 |
| 16 | SHIFTER RING | 30178907-1973 |
| 17 | SPRING CALIPER RETURN | 30178890-12 |
| 18 | PIN SERVICE SUPPORT | 30178890-14 |
| 19 | PIN FINGER LOOP COTTER | 30178890-15 |
| 20 | PIN CLAIPER PIVOT | 30178890-19 |
| 21 | PIN CYLINDER | 30178890-16 |
| 22 | PIN BREAK PAD | 30178890-20 |
| 23 | BEARING | 30178890-25 |
| 24 | PAD ASSY | 30178890-26 |
| 25 | GREASE FITTING | 30178890-112 |
| 26 | A5 ROD WIPER | 30178890-32 |
| 27 | GREASE FITTING | 30178890-112 |
| 28 | ORING | 30178890-157 |
| 29 | PLUNGER ASSY ADJUSTABLE | 30178890-156 |
| 30 | VALVE BLEEDER | 30178890-98 |
| 31 | RING GUIDE | 30178890-88 |
| 32 | SPRING | 30178890-89 |
| 33 | PISTON | 30178890-90 |
| 34 | QUICK COUPLING | 30178890-130 |
| 35 | ACCUMULATOR 2.5 GALLON 3KPSI | 1313574-17 |
| 36 | GAUGE 5000PSI /63MM DIA | 4510-0050-00 |
| 37 | FILTER HIGH PRESSURE | 7805831 |
| 38 | GAUGE SERVICE CALIPER PRESSURE | 7806882 |
| 39 | VALVE DRECTIONAL | 2302070-149 |
| 40 | GAUGE 3000PSI/63MM DIA | 7806852 |
| 41 | U Bolte M20 | 30178907-1057 |
| 42 | CLAMP | 30178907-1058 |
| 43 | NUT M48x1.5 | 30178907-1115 |
| 44 | WASHER 48 | 30178907-1116 |
| 45 | BEARING COVER | 30178907-1118 |
| 46 | BEARING COVER ( LEFT ) | 30178907-1131 |
| 47 | BRACKET, ACCUMULATOR HYDAC 02100651 HSS 222/229 | 2302070098 |
| 48 | CHECK VALVE ( 5 PSI) NO-12 SAE | 2302004026 |
| 49 | CARTIDGE PROPORTIONAL FLOW CONTROL | 2302070-144 |
| 50 | CARTRIDG PROPORTIONAL PRESSURE DEDUCING | 2302070-147 |
Field LS NOV Drill Winch Fault Repair Cases
Case 1: Hydraulic Seal Leakage
An LS NOV Drill Winch experienced severe hydraulic fluid leaks due to worn 55X80X12 seals (PN 30178907-1124). Replacing the OEM seal kits eliminated leaks and restored hydraulic system pressure.
Case 2: Brake Pad Wear & Braking Failure
Reduced braking efficiency and unsafe hoisting occurred due to worn brake pad assemblies (PN 30178890-26). Installing new OEM brake pads restored full braking power and safe winch control.
Case 3: Pressure Relay Valve Malfunction
Unstable hydraulic pressure caused erratic winch operation, traced to a faulty pressure relay valve (PN 30178907-1319). Fitting the OEM valve resolved pressure fluctuations and restored smooth hoisting.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts exclusively compatible with LS NOV Drill Winches? | Yes, all spare parts are custom-designed and manufactured solely for LS NOV Drill Winch units, with OEM-matched dimensions and part numbers for perfect fit. |
| Do these hydraulic components handle 5000 PSI operating pressure? | Absolutely, all seals, valves, and hoses are rated for up to 5000 PSI, matching the LS NOV Drill Winch’s high-pressure hydraulic system requirements. |
| Can these parts be used for on-site emergency winch repairs? | Yes, all components are designed for quick field installation, making them ideal for emergency breakdown fixes and routine preventive maintenance. |
Procurement Guidance
For drilling hoist technicians, rig supervisors, and oilfield procurement teams relying on LS NOV Drill Winches, this parts list is the definitive resource to minimize unplanned rig downtime, uphold API 7K safety standards, and source guaranteed OEM-compatible components. Avoid the risks of substandard generic parts, hydraulic failures, and unsafe hoisting conditions — this catalog provides a standardized procurement benchmark and technical repair reference for all critical LS NOV winch parts.
Invest in these high-quality LS NOV Drill Winch spare parts to streamline maintenance workflows, resolve field mechanical failures quickly, and keep your drilling rig’s hoisting system operating at peak safety and efficiency. Each component is built to withstand the harsh conditions of 24/7 drilling operations, making this the trusted supply reference for maintaining reliable drill string hoisting and protecting your valuable winch equipment.
