Product Introduction
This series of lubrication system replacement parts covers all core components for the Lanzhou LS 3NB500C, 3NB1000C, 3NB1300C, 3NB1600 mud pump power end lubrication assembly (107.15.30.00/107.14.30.00/107.12.30.00/107.11.30.00), including left and right oil channels, gear oil tanks, oil pipes, joint bodies, oil retainers, magnetic blocks, sealing gaskets, high-strength bolts, nuts, cotter pins, locking wires and other matching fittings. Every part is precision machined to match original pump dimensions, requiring no on-site modification or secondary processing; universal design across the four pump models simplifies inventory management and reduces procurement errors.
Core Functional Specifications
Each component is engineered to support consistent, reliable lubrication delivery under harsh drilling conditions, with field-proven performance metrics:
- Lubrication Delivery Performance: The complete lubrication system maintains a stable oil flow rate of 20-30L/min, ensuring full coverage of all power end friction pairs, keeping operating temperatures within a safe 55-80℃ range.
- Sealing & Leakage Prevention: Custom sealing gaskets and joint bodies feature oil-resistant nitrile rubber material, achieving zero oil leakage under continuous pressure and vibration, with a service life of up to 3000 operating hours.
- Impurity Filtration: Built-in magnetic blocks effectively adsorb metal wear debris, preventing secondary damage to gears and bearings, and extending the service life of lubricating oil by 35%.
- Fastener Stability: High-strength bolts and locking nuts feature anti-vibration design, with a torque retention rate of over 95% even under long-term, high-frequency mud pump vibration.
Applicable Operating Conditions
This series of lubrication system parts performs reliably across all drilling scenarios for Lanzhou LS 3NB series mud pumps, withstanding extreme on-site conditions:
- Onshore Drilling: Land rigs, desert drilling platforms, mountain and frozen soil drilling sites, resistant to dust, large temperature fluctuations and continuous mechanical vibration.
- Offshore Drilling: Offshore platforms and jack-up rigs, withstanding salt spray corrosion, high humidity and wave-induced continuous vibration without performance degradation.
- Long-Haul Continuous Operation: Suitable for 24/7 drilling schedules, maintaining stable lubrication performance under full-load pump operation.
- Harsh Lubricating Oil Environments: Compatible with standard drilling lubricating oils containing minor metal impurities, with sealing and magnetic components resisting abrasion and corrosion.
Maintenance & Service Recommendations
To maximize the service life of the lubrication system and protect the mud pump power end, follow these API-standardized, field-proven maintenance protocols:
- Daily Inspection: Check for oil leaks at pipelines, joints and oil tanks; monitor power end operating temperature for abnormal overheating.
- Weekly Maintenance: Tighten all connecting bolts and nuts to rated torque; clean the surface of magnetic blocks to remove adsorbed metal debris.
- Monthly Maintenance: Inspect oil pipes and joints for aging, cracking or damage; check sealing gaskets for wear and replace damaged parts promptly.
- Quarterly Maintenance: Flush oil channels and oil tanks to remove sludge buildup; inspect oil retainers for damage; verify cotter pins and locking wires are intact.
- Storage Guidelines: Store spare parts in a dry, dust-free environment; keep sealing components away from direct sunlight and high temperatures to prevent premature aging.
- We supply the following spare parts:
| NAME | PART NO | |||
| NAME | 3NB500C | 3NB1000C | 3NB1300C | 3NB1600 |
| Slush pump | 107.15.00 | 107.14.00 | 107.12.00 | 107.11.00 |
| Lubrication system For power end | 107.15.30.00 | 107.14.30.00 | 107.12.30.00 | 107.11.30.00 |
| HEAD hold bolt | GB32.1-88（M12×35） | GB32.1-86（M12×35） | GB32.1-88（M12×35） | GB32.1-88（M12×35） |
| Wire | φ1.6 L=2000 | φ1.6 L=2000 | φ1.6 L=2000 | φ1.5 L=2000 |
| Joint body | F3-42-80（16-1/2″) | F3-42-8016-1/2″ | F3-42-8016-1/2″ | F3-42-8016-1/2″ |
| Oil pipe | 107.15.30.01（φ16×1.5 L=220） | 107.14.30.01（φ16×1.5 L=240） | 107.12.30.01（φ16×1.5 L=270） | 107.11.30.01（φ16×1.5 L=350） |
| Oil pipe | 107.15.30.02 φ16×1.5 L=640 | 107.14.30.02（φ16×1.5 L=700） | 107.12.30.02（φ16×1.5 L=710） | 107.11.30.02（φ16×1.5 L=750） |
| Left oil channel | 107.15.31.00 | 107.14.31.00 | 107.12.31.00 | 107.11.31.00 |
| Bolt | GB5783-86（M12×35） | GB5783-86（M12×40） | GB5783-86（M12×40） | GB5783-86（M12×40） |
| Nut | GB6170-86（M12） | GB6170-86（M12） | GB6170-86（M12） | GB6170-86（M12） |
| Oil retainer/groover | 107.15.32.00 | 107.14.32.00 | 107.12.32.00 | 107.11.32.00 |
| Right oil chanel | 107.15.33.00 | 107.14.33.00 | 107.12.33.00 | 107.11.33.00 |
| Oil tank for gear(right) | 107.15.34.00 | 107.14.34.00 | 107.12.34.00 | 107.11.34.00 |
| Oil tank for gear(left) | 107.15.36.00 | 107.14.35.00 | 107.12.35.00 | 107.11.35.00 |
| Joint body | F3-41-93（16-1/2″) | F3-41-93（16-1/2″) | F3-41-93（16-1/2″) | F3-41-93（16-1/2″) |
| Nut | GB5647-85(16) | GB5647-85(16) | GB5647-85(16) | GB5647-85(16) |
| Pipe liner | GB5646-85(16) | GB5646-85(16) | GB5646-85(16) | GB5646-85(16) |
| Oil trao | 107.15.35.00 | 107.14.36.00 | 107.12.36.00 | 107.11.36.00 |
| Plug | 107.04.30.04 | 107.04.30.04 | 107.04.30.04 | 107.04.30.04 |
| Nut | GB6170-86(M6) | GB6170-86(M6) | GB6170-86(M6) | GB6170-86(M6) |
| Socket | 107.15.30.03（φ10×1 L=10） | 107.14.30.03（φ10×1 L=30） | 107.12.30.03（φ10×1 L=30） | 107.11.30.04（φ10×1 L=30） |
| Gasket | 107.04.30.05 | 107.04.30.05 | 107.04.30.05 | 107.04.30.05 |
| Magnetic block | 107.04.30.06-1 | 107.04.30.06-1 | 107.04.30.06-1 | 107.04.30.06-1 |
| Socket | 107.15.30.04（φ10×1 L=10） | 107.14.30.04（φ10×1 L=10） | 107.12.30.04（φ10×1 L=10） | 107.11.30.04（φ10×1 L=10） |
| Rod | 107.04.30.08 | 107.04.30.08 | 107.04.30.08 | 107.04.30.08 |
| Cotter pin | GB91-86（2×12） | GB91-86（2×12） | GB91-86（2×12） | GB91-86（2×12） |
On-Site Fault Repair Case Studies
Case 1: Clogged Oil Channel Causing Insufficient Lubrication
A land deep-well drilling rig’s Lanzhou LS 3NB1000C mud pump experienced power end overheating and abnormal noise. On-site inspection revealed sludge and metal debris clogging the left oil channel (107.14.31.00), cutting off lubricant supply to the bearings. Technicians cleaned the oil channel, replaced the magnetic block, and flushed the entire lubrication system, restoring normal oil flow and resolving the overheating issue.
Case 2: Damaged Gasket Causing Severe Oil Leakage
An offshore drilling site’s LS 3NB1300C mud pump had heavy oil leakage from the lubrication system oil tank, leading to low oil levels and insufficient lubrication. The fault was traced to a worn, cracked sealing gasket (107.04.30.05). Maintenance staff replaced the gasket, tightened the mounting bolts to standard torque, and eliminated the leakage, preventing power end component damage.
Case 3: Loose Bolts Causing Pipeline Disconnection
A drilling team’s LS 3NB1600 mud pump suffered a sudden lubrication system failure, with oil spilling from a disconnected oil pipe. Long-term vibration had loosened the mounting bolts (GB5783-86 M12×40), causing the pipeline to shift and disconnect. Workers reconnected the oil pipe, replaced the cotter pin, tightened all fasteners, and installed new locking wire, restoring normal lubrication system operation.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these lubrication system parts compatible with all four Lanzhou LS 3NB mud pump models? | Yes, all parts are designed to fully match 3NB500C, 3NB1000C, 3NB1300C, 3NB1600 mud pump power end lubrication systems, with OEM-standard dimensions and universal interfaces, no modifications needed for installation. |
| What is the service life of the sealing gaskets under normal working conditions? | Under standard drilling conditions, the sealing gaskets (107.04.30.05) have a service life of 2800-3000 operating hours; in high-temperature, high-corrosion environments, shorten replacement to 2000 operating hours to avoid oil leaks. |
| How often should the magnetic block be cleaned? | It is recommended to clean the magnetic block (107.04.30.06-1) every 15 days under normal operation, to remove adsorbed metal debris and maintain effective impurity filtration for the lubrication system. |
Procurement Guidance
This Lanzhou LS 3NB series mud pump lubrication system parts list is a professional, reliable one-stop reference for drilling equipment managers, maintenance teams and procurement staff, providing standardized, high-quality spare parts solutions for daily upkeep, emergency repairs and inventory stocking. Using these OEM-standard replacement parts eliminates the risk of part mismatching, quickly resolves common lubrication system failures, and protects the critical power end components from wear and seizing—directly reducing long-term maintenance costs and costly drilling downtime.
