Lanzhou LS-NOW Drilling Rig Spare Parts

1. Introduction

1.1 Applicable Equipment Models

This document focuses on spare parts supply and technical support for Lanzhou LS-NOW drilling rigs, covering full-series models including ZJ Series (ZJ40/2250DZ, ZJ50/3150DZ, ZJ70/4500DZ, ZJ90/6750DZ, ZJ40/2250DB, ZJ50/3150DB, ZJ70/4500DB, ZJ90/6750DB, ZJ40/2250LDB, ZJ50/3150LDB, ZJ40/2250/JDB, ZJ50/3150JDB, ZJ20/1350L(J), ZJ30/1700L(J), ZJ40/2250L(J), ZJ50/3150L(J), ZJ70/4500L, ZJ50/3150JD, ZJ70/4500LDB), KDC Series (KDC45/46), as well as key components for Lanzhou LS Traveling Block YC250 and Rotary Table. All parts are fully compatible with original equipment, adhering to Lanzhou LS’s OEM specifications and industry standards.

1.2 Target User Needs & Core Purpose

Target users include oil and gas drilling companies, drilling rig maintenance service providers, and equipment management departments operating Lanzhou LS-NOW drilling rigs. Core user needs focus on obtaining OEM-compatible, high-reliability spare parts, professional technical guidance for installation and fault handling, and standardized procurement references to reduce equipment downtime. The core purpose of this document is to provide a one-stop solution for Lanzhou LS-NOW users, integrating spare parts overview, technical parameters, maintenance tips, and fault resolution references, ensuring continuous, safe, and efficient operation of drilling rigs while lowering maintenance costs.

2. Product Overview

We supply a full range of genuine-compatible spare parts for Lanzhou LS-NOW drilling rigs, focusing on key components such as traveling blocks (YC250 model) and rotary tables, as well as general spare parts for ZJ/KDC series rigs. All parts comply with API Spec 7K, API Spec 8C, and GB/T national standards, undergoing strict quality inspection including material composition testing, dimensional accuracy verification, and fatigue resistance testing. The product portfolio covers structural components (housings, shafts, sheaves), rotating parts (bearings, pinions), fasteners (studs, screws, nuts), sealing elements (O-rings, oil seals), and functional parts (grease fittings, lock pawls), fully meeting the replacement and maintenance needs of Lanzhou LS-NOW drilling rigs and their core components.

3. Functional Description

3.1 Key Component Functions

Each spare part is engineered to match the original equipment’s functional requirements, ensuring the overall performance of the drilling rig and its components. For Lanzhou LS Traveling Block YC250: Sheaves (101.04.06/101.04.07) guide and support drilling wire ropes, reducing rope wear and ensuring stable lifting of the drill string; Bearings (37941K, 1687/650) minimize friction between rotating parts, extending service life; Grease fittings (GB1152-89 M10x1) ensure effective lubrication of moving components. For Rotary Table: Ring gears (spiral/bevel teeth) transmit power to drive the drill string rotation; Lock pawls (105.06.01/105.06.02) secure the rotary table during non-operation to prevent accidental rotation; Kelly bushings (105.06.31) and master bushings (105.07.22) position and support the drill string, ensuring precise drilling alignment.

3.2 Overall Functional Advantages

The supplied spare parts integrate durability, compatibility, and maintainability, effectively supporting core drilling operations such as drill string hoisting, rotation, and well control. All parts feature strong load-bearing capacity, resistance to high pressure, high temperature, and corrosion, and are designed with standardized interfaces to facilitate quick installation and replacement, reducing maintenance time and improving equipment availability.

4. Structural Features

4.1 Material Advantages

Key components adopt high-strength alloy steel (40Cr, 20CrMnTi), wear-resistant cast iron, and precision bearings (SKF-equivalent grade), undergoing heat treatment (quenching, tempering) to enhance hardness, toughness, and fatigue resistance. Sealing elements use nitrile rubber and fluorine rubber, ensuring long-term sealing performance in harsh environments with drilling fluid and high temperatures. Fasteners comply with GB standards (GB5781, GB93) and are made of high-tensile steel to ensure connection reliability under high loads.

4.2 Structural Design Features

Parts adopt modular and standardized structural design, consistent with Lanzhou LS’s original equipment specifications. The design fully considers stress distribution during drilling operations, optimizing cross-sectional shapes and connection methods to avoid stress concentration. For example, traveling block housings (left/right assemblies) use reinforced rib structures to enhance load-bearing capacity; rotary table housings are designed with integrated lubrication and drainage systems to ensure effective heat dissipation and debris removal; bearings are equipped with retainers (101.04.03) to prevent displacement during high-speed rotation.

5. Applicable Working Conditions

The spare parts are suitable for various working conditions of Lanzhou LS-NOW drilling rigs, including onshore oil and gas drilling, shale gas drilling, coalbed methane drilling, and geothermal drilling. They can adapt to harsh environmental conditions such as high temperature (up to 60℃), low temperature (down to -40℃), high humidity, dust, and strong vibration. Whether in desert, mountain, or coastal areas, the parts maintain stable performance, meeting the long-term high-load operation requirements of drilling rigs. For example, corrosion-resistant coatings on structural parts prevent damage from saline-alkali environments; high-temperature-resistant seals adapt to continuous operation of rotary table and traveling block components.

6. Maintenance & Service Recommendations

6.1 Routine Maintenance

1. Regular Inspection: Conduct weekly inspections of key parts, including fastener tightness, bearing rotation smoothness, and seal integrity. Check for oil leaks, abnormal noise, or component deformation, and address potential issues promptly. 2. Lubrication Maintenance: Add lubricating oil/grease (complying with API 7K) to bearings, shafts, and other moving parts every 150 working hours; use grease fittings to inject high-temperature, anti-wear grease for traveling block and rotary table components. 3. Cleaning Maintenance: Regularly clean parts surfaces, especially hydraulic components and seals, to remove drilling fluid residues, dust, and debris, avoiding blockage or corrosion.

6.2 Replacement Specifications

1. Replacement Timing: Replace parts according to the original manual’s service life or when obvious faults occur (e.g., bearing wear exceeding 0.5mm, seal leakage, sheave groove wear exceeding 1mm, or fastener deformation). 2. Installation Requirements: Use professional tools, follow Lanzhou LS’s installation specifications, and ensure accurate positioning and firm connection. For example, align rotary table ring gears and pinions correctly to avoid tooth wear; torque fasteners per standard values. 3. Post-Replacement Inspection: Conduct a test run after replacement to verify normal operation, ensuring no abnormal noise, vibration, or performance degradation.

6.3 Storage Recommendations

Store spare parts in a dry, ventilated, and clean warehouse, avoiding direct sunlight, rain, and corrosion. Classify parts by model and type, and label them clearly. Precision components (bearings, seals) should be stored in sealed packaging to prevent dust and moisture; structural components should be placed horizontally to avoid deformation. For long-term storage, apply anti-rust oil to metal parts and inspect regularly for rust or damage.

Supply parts for Lanzhou LS-NOW Drilling rig

Lanzhou LS Tavelling block YC250 parts list

Lanzhou LS Rotary table parts list

7. On-Site Fault Repair Cases

Case 1: Lanzhou LS Traveling Block YC250 Sheave Wear Causing Wire Rope Deviation

Fault Phenomenon: A ZJ50/3150DZ rig’s YC250 traveling block experienced wire rope deviation and abnormal noise during hoisting. Diagnosis: Sheave (101.04.06) groove wear exceeded 1.2mm, and bearing (37941K) lubrication was insufficient, causing uneven rotation. Solution: Replaced the sheave and bearing with OEM-compatible parts, cleaned the lubrication channel, and injected high-temperature grease.Result: Wire rope operated smoothly, no deviation or abnormal noise occurred, and hoisting efficiency was restored.

Case 2: Rotary Table Lock Pawl Failure

Fault Phenomenon: A ZJ70/4500DB rig’s rotary table could not be locked securely, posing safety risks. Diagnosis: Left lock pawl (105.06.01) was worn, and the locking pin (105.07.01-1) was bent, preventing effective engagement. Solution: Replaced the lock pawl and locking pin, adjusted the pawl position to ensure tight engagement, and lubricated the rotating parts. Result: Rotary table locked securely, eliminating safety hazards and ensuring operational safety during non-drilling periods.

Case 3: Traveling Block Hydraulic Seal Leakage

Fault Phenomenon: A ZJ40/2250LDB rig’s traveling block had oil leakage from the housing assembly.Diagnosis: O-ring (105.07.10) and oil seal (D7-1-67 180×220×15) were aged and damaged due to long-term exposure to high temperatures and drilling fluid. Solution: Replaced the O-ring and oil seal with fluorine rubber parts (API 6A compliant), cleaned the seal groove, and applied sealant. Result: Leakage stopped, and the traveling block maintained stable lubrication, extending component service life.

Case 4: Rotary Table Bearing Damage

Fault Phenomenon: A KDC45/46 rig’s rotary table had abnormal noise and overheating during operation.Diagnosis: Bearing (1687/620) was damaged due to contamination and insufficient lubrication, with obvious wear on the raceway. Solution: Replaced the bearing with a precision OEM-compatible part, cleaned the bearing housing, and refilled with lubricating oil. Result: Abnormal noise and overheating were eliminated, and the rotary table operated smoothly, ensuring stable drill string rotation.

8. FAQ (Frequently Asked Questions)

9. Procurement Guide & Conclusion

We are committed to providing high-quality, OEM-compatible spare parts and professional technical support for Lanzhou LS-NOW drilling rig users, covering all listed rig models and key components (YC250 traveling blocks, rotary tables). All products meet API and GB standards, with complete quality inspection certificates and traceability, ensuring reliability in harsh drilling conditions. Whether for routine replacement, emergency maintenance, or technical consultation, we offer customized solutions to minimize downtime and improve drilling efficiency. Adhering to "quality first, customer-oriented" principles, we deliver reliable parts and thoughtful service. For procurement inquiries, model confirmation, or technical support, contact us anytime—we will respond promptly to support your drilling operations.

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Emeil: [email protected]   whatsapp: +86 15275658619

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