Product Introduction
This series covers all core replacement parts for the LS-NOV 3NB-1300C mud pump power end lubrication system, including left and right oil channels, left and right gear oil tanks, oil pipes of different lengths, oil retainers, oil traps, pipe joints, magnetic blocks, high-strength bolts, nuts, cotter pins, sealing gaskets, sockets and other connecting accessories. Each part is made of oil-resistant, corrosion-resistant and vibration-resistant materials, processed by precision machining, achieving 100% direct interchangeability with original lubrication system components, requiring no on-site modification or secondary processing, suitable for daily inspection, routine maintenance, seasonal replacement and comprehensive system overhaul.
Core Function Specifications
Every component in this lubrication system parts lineup is engineered to adapt to harsh oilfield heavy-load operation conditions, with verified authoritative performance indicators:
- Stable Lubricating Oil Supply: The oil channel and oil pipe system ensures unobstructed circulation of lubricating oil, maintaining stable oil supply to all friction pairs of the power end.
- Efficient Impurity Filtration: Built-in magnetic blocks adsorb metal wear debris in lubricating oil, keeping oil clean and reducing secondary wear of components.
- Reliable Oil Sealing: Custom gaskets and oil retainers prevent lubricating oil leakage, adapting to long-term mechanical vibration and temperature fluctuations.
- Precise Connection Matching: Standardized pipe joints and sockets realize tight connection of oil pipelines, avoiding oil leakage and air intake.
- Stable Fixed Installation: High-strength bolts and nuts firmly fix all components, preventing displacement caused by pump vibration.
Structural Characteristics
These lubrication system parts feature optimized structures suitable for oilfield field maintenance and long-term durable operation:
- Split Oil Channel Design: Independent left and right oil channels facilitate targeted disassembly, cleaning and replacement, simplifying maintenance operations.
- Modular Oil Tank Structure: Separated left and right gear oil tanks realize targeted lubrication supply, with uniform oil distribution and no dead corners.
- Fixed-Length Oil Pipe Configuration: Custom-sized oil pipes fit the installation space perfectly, avoiding bending and blockage, ensuring smooth oil flow.
- Integrated Oil Retainer & Oil Trap: Combined oil control components realize oil storage and leakage prevention, optimizing internal lubrication distribution.
- Standardized Fastener System: Unified national standard fasteners with high compatibility, making spare parts preparation and replacement more convenient.
Applicable Working Conditions
All lubrication system parts adapt to various harsh oilfield drilling scenarios matching the LS-NOV 3NB-1300C mud pump:
- Long-Term Continuous Drilling: 24-hour uninterrupted operation with the mud pump power end, suitable for onshore drilling and workover operations.
- Heavy-Load Power End Operation: Adapts to high-friction and high-temperature working conditions of the power end’s rotating components.
- Harsh Outdoor Environments: Desert, plain and mountain drilling sites, adapting to ambient temperatures ranging from -35℃ to 70℃.
- High-Vibration Operation Conditions: Resistant to strong mechanical vibration generated by the mud pump, maintaining stable operation without fastener loosening.
We supply the following spare parts:
| 107.12.30.00 Lubrication System for Power End | ||
| Item No. | Part No. | Description |
| 501 | GB32.1-88 | Head hole bolt M12x35 |
| 502 | Wire 1.5 | |
| 503 | F3-42-80 | Joint body 16-1/2” |
| 504 | 107.12.30.01 | Oil pipe 16×1.5 L=350 |
| 505 | 107.12.30.02 | Oil pipe 16×1.5 L=750 |
| 506 | 107.12.31.00 | Left oil channel |
| 507 | GB5783-86 | Bolt M12x40 |
| 508 | GB6170-86 | Nut M12 |
| 509 | 107.12.32.00 | Oil retainer groover |
| 510 | 107.12.33.00 | Right oil channel |
| 511 | 107.12.34.00 | Oil tank for gear (right) |
| 512 | 107.12.35.00 | Oil tank for gear (left) |
| 513 | F3-41-93 | Joint body 16-1/2” |
| 514 | GB5647-85 | Nut 16 |
| 515 | GB5646-85 | Pipe liner 16 |
| 516 | 107.12.36.00 | Oil trap |
| 517 | 107.04.30.04 | Plug |
| 518 | GB6170-86 | Nut M6 |
| 519 | 107.12.30.03 | Socket 10×1 L=30 |
| 520 | 107.04.30.05 | Gasket |
| 521 | 107.04.30.06-1 | Magnetic block |
| 522 | 107.12.30.04 | Socket 10×1 L=10 |
| 523 | 107.04.30.08 | Rod |
| 524 | GB91-86 | Cotter pin 2×12 |
On-site Fault Repair Cases
Case 1: Oil Leakage Caused by Damaged Sealing Gasket
A large amount of lubricating oil leakage occurred at the oil channel joint of the mud pump power end, leading to insufficient oil level. The sealing gasket was aged and damaged, losing sealing effect. Maintenance staff replaced the matching gasket, retightened the fastening bolts, and completely eliminated the oil leakage fault.
Case 2: Insufficient Lubrication Due to Oil Pipe Blockage
The power end components had poor lubrication and local overheating, with no smooth oil circulation. The oil pipe was blocked by accumulated metal impurities and sludge. Workers cleaned the oil pipe and oil channels, replaced clogged sockets, and restored normal lubricating oil supply.
Case 3: Component Displacement Triggered by Loose Fasteners
The left oil channel shifted due to long-term mud pump vibration, causing oil pipe bending and oil leakage. The fixing bolts were loose and lost clamping force. Maintenance personnel replaced slightly worn bolts and nuts, readjusted the installation position, and fastened all connectors firmly.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts fully compatible with LS-NOV 3NB-1300C mud pump power end lubrication system? | Yes, all parts in this list are custom-designed for the LS-NOV 3NB-1300C mud pump power end lubrication system (107.12.30.00), fully matching OEM dimensions and installation requirements with 100% direct interchangeability. |
| What is the normal working oil pressure range of this lubrication system? | The normal stable working oil pressure of the power end lubrication system is 0.2-0.4MPa; abnormal pressure indicates blockage, leakage or system failure. |
| How often should the magnetic blocks be cleaned? | Clean the magnetic blocks every 30 days under conventional operating conditions; shorten the cleaning cycle to 15 days in heavy-load operation to ensure effective impurity filtration. |
Procurement Guidance
This LS-NOV 3NB-1300C mud pump power end lubrication system parts list is a professional and reliable reference for oilfield equipment maintenance and spare parts procurement teams, providing clear, accurate part selection and procurement standards for daily maintenance, routine replacement and comprehensive system overhaul. All supplied parts undergo strict dimensional verification, oil resistance testing and vibration resistance testing, fully complying with API 7K industry standards and original equipment quality requirements, with ultra-high durability and sealing performance.
