N151-79 NJ200-01.43A Spline gear

Introduction

In the oil and gas drilling industry, the YNJ200/15 Hydraulic Make-up and Break-out Unit—along with its supporting NJ200 series machinery and TEDA-compatible systems—plays a critical role in ensuring efficient and safe drill pipe connection and disconnection. These pieces of equipment operate under high pressure, constant vibration, and harsh environmental conditions, making their reliability entirely dependent on the quality and compatibility of their spare parts. On-site teams and equipment managers frequently face costly and frustrating challenges: mismatched valves that cause hydraulic leaks, worn gears that lead to power transmission failures, faulty bearings that trigger abnormal noise, and low-quality cables that disrupt electrical connectivity. These issues not only result in unplanned downtime, which eats into project timelines and profits, but also pose serious safety risks to on-site personnel and damage equipment integrity over time.

Our spare part supply is specifically engineered to eliminate these pain points, focusing on a comprehensive range of components tailored exclusively for the YNJ200/15 Hydraulic Make-up and Break-out Unit, NJ200 series machinery (primarily NJ200-01 sub-models), and TEDA-compatible systems. From critical mechanical components like the N151-79 NJ200-01.43A Spline gear (designed for YNJ200/15) and deep groove ball bearings to hydraulic valves (plug valves, check valves, relief valves), pipe connections, and specialized cables, every product we supply is manufactured to meet or exceed original equipment specifications. Adhering to authoritative industry standards—including API (American Petroleum Institute) 7K, ISO 9001 quality management system, GB/T (Chinese National Standard) for bearings and mechanical components, and NFPA (National Fire Protection Association) hydraulic standards—our parts ensure seamless compatibility, long service life, and reliable performance in the most demanding drilling environments.

This document serves as your all-in-one reference for procurement and technical support, providing detailed product introductions, practical function explanations, structural feature breakdowns, applicable working conditions, maintenance guidelines, real on-site fault repair cases, and frequently asked questions. Our sole focus is to provide you with high-quality, readily available spare parts and the expertise you need to keep your YNJ200/15 unit, NJ200 series machinery, and TEDA-compatible equipment running smoothly, minimize downtime, and maximize operational efficiency—all with the goal of supporting your spare part procurement needs and long-term operational success.

Core Purpose & Target User Needs

Core Purpose

The core purpose of our supplied spare parts is to deliver direct, high-reliability replacements for the YNJ200/15 Hydraulic Make-up and Break-out Unit, NJ200 series (NJ200-01 sub-model) drilling machinery, and TEDA-compatible systems. Each component—from the N151-79 NJ200-01.43A Spline gear (customized for YNJ200/15) and GB/T276 deep groove ball bearings to 2A25182 plug valves and 444-3C VFD cables—are precision-manufactured to match the original equipment’s dimensional accuracy, material quality, and performance requirements. We aim to minimize equipment downtime, reduce maintenance costs, enhance operational safety, extend the service life of your critical machinery, and provide a reliable supply chain that supports both emergency replacements (e.g., failed valves, broken cables) and regular maintenance schedules (e.g., bearing lubrication, gear inspection).

Target User Segmentation & Needs

• Oilfield Drilling Contractors: Need a comprehensive range of compatible spare parts for YNJ200/15 units and NJ200 series machinery to avoid unplanned downtime during drill pipe make-up/break-out operations. Key needs include quick access to critical components (spline gears, hydraulic valves, main shafts), reliable small parts (retainer rings, spacers, circlips), and professional technical guidance to resolve on-site faults—all at a cost-effective price point that balances quality and budget.

• On-Site Maintenance Teams: Require easy-to-install, durable spare parts that eliminate the need for equipment modifications. They need clear maintenance guidelines, fault diagnosis support, and parts that can withstand harsh drilling conditions (corrosion, vibration, extreme temperatures)—such as corrosion-resistant pipe connections, wear-resistant gears, waterproof cables, and high-load bearings.

• Drilling Equipment Service Providers: Need a full inventory of YNJ200/15, NJ200 series, and TEDA-compatible spare parts (from mechanical components to hydraulic valves and cables) to serve multiple client needs. They prioritize product quality, 100% compatibility, and timely supply to improve service efficiency, reduce client downtime, and enhance customer satisfaction.

• Equipment Asset Managers: Focus on extending the service life of YNJ200/15 units, NJ200 series machinery, and TEDA systems while controlling maintenance costs. They need spare parts that comply with industry and national standards (API 7K, GB/T), have a proven track record of reliability, and come with technical support to optimize maintenance schedules and reduce long-term operational expenses.

• TEDA Equipment Operators: Require specialized parts like the N151-79 NJ200-01.43A Spline gear and hydraulic valves that are fully compatible with TEDA systems, ensuring seamless integration and stable performance to avoid safety hazards and operational disruptions during critical drill pipe operations.

Product Introduction

We specialize in supplying a complete range of high-quality spare parts exclusively for the YNJ200/15 Hydraulic Make-up and Break-out Unit, NJ200 series (NJ200-01 sub-model) drilling machinery, and TEDA-compatible systems. All products are manufactured using premium materials, advanced CNC precision machining technology, and strict quality control processes to ensure perfect compatibility with original equipment, stable performance, and resistance to the harsh conditions of drilling operations. Our product lineup covers seven key categories, each designed to support critical functions of your equipment:

1. Mechanical Transmission Components (YNJ200/15 & NJ200-01 Series)

These components are the backbone of power transmission for the YNJ200/15 unit and NJ200-01 series machinery, ensuring smooth operation during drill pipe make-up and break-out. Key models include:

• N151-79 NJ200-01.43A Spline gear: Specifically designed for the YNJ200/15 Hydraulic Make-up and Break-out Unit and NJ200-01 series, this spline gear transmits power between components with precise meshing, ensuring stable torque output and smooth operation. It is made of high-strength alloy steel for wear resistance.

• N151-47 NJ200-01.31A Main shaft: The core rotating component of the NJ200-01 unit head, responsible for transmitting power to the drill pipe connection mechanism. It features high dimensional accuracy to ensure stable rotation and minimal vibration.

• N151-80 NJ200-01.44B Main shaft gear & N151-86 NJ200-01.47 Duplex gear: Work together to adjust power transmission speed, adapting to different drill pipe sizes and connection requirements. They feature precision tooth profiles for quiet, efficient operation.

• N151-77 XYQ12.Z-26 Spline shaft & N151-44 NJ200-01.27 Spline shaft: Transmit torque between gears and shafts, ensuring tight engagement and no slipping during high-load operations.

• N151-56 NJ200-01.34 Inner spline gear & N151-59 NJ200-01.35 Inner spline sleeve: Connect rotating components to ensure precise power transmission, reducing wear and extending service life.

2. Bearings & Supporting Components

These components reduce friction between rotating parts, ensuring smooth operation and extending the service life of mechanical transmission systems. Key models include:

• GB/T276 Deep groove ball bearings (111, 208, 217, 109): Comply with Chinese National Standard GB/T276, used in various rotating components (main shafts, spline shafts) of NJ200-01 series machinery. They provide low friction, high load capacity, and stable operation in high-speed environments.

• GB/T283 Short cylinder roller bearing 42408 & GB/T284 Short cylinder roller bearing 292305: Designed for high-load rotating components (duplex gears, main shafts), these bearings can withstand radial and axial loads, ensuring stable operation under harsh conditions.

• GB/T893.2 Circlip for hole 62: Secures bearings and other components in place, preventing axial movement and ensuring stable operation. It is easy to install and remove for maintenance.

• N151-45 NJ200-01.29 Spacer & N151-46 NJ200-01.28 Bushing: Maintain proper spacing between bearings, gears, and other components, ensuring precise alignment and reducing wear.

3. Hydraulic Valves (TEDA Compatible)

These valves control the flow and pressure of hydraulic oil in the YNJ200/15 unit and TEDA-compatible hydraulic systems, ensuring precise operation of make-up/break-out mechanisms. Key models include:

• Plug Valves (2A25182, 2A25154, 2A25168HB): Used to control the on/off of hydraulic fluid flow, featuring a simple structure, reliable sealing, and easy operation. They are compatible with TEDA hydraulic systems and resistant to high pressure.

• Check Valves (2A43982, 2A43980, 1A19662C, 1A19485C, 1A18614C): Prevent backflow of hydraulic oil, ensuring the hydraulic system maintains stable pressure and preventing damage to components. They feature quick response and tight sealing.

• Spring Style Relief Valve (2A18138, 2A18544): Protect the hydraulic system from overpressure by releasing excess oil when pressure exceeds the safe limit, preventing system damage and ensuring operational safety.

• Full Bore Unloading Valve (1A23392, 2A33687): Unload hydraulic pressure when the system is not in use, reducing energy consumption and extending the service life of hydraulic components.

4. Pipe Connections & Fittings (TEDA Compatible)

These components connect hydraulic pipes and hoses in the YNJ200/15 unit and TEDA systems, ensuring leak-proof fluid transmission. Key models include:

• Integral Connections and Pipe Tees (2A13794, 2A16770, 2A27998, 2A25990): Split hydraulic fluid flow into multiple paths, facilitating the operation of multiple hydraulic components simultaneously. They feature robust construction and leak-proof connections.

• Integral Connections and Pipe Ells (3A20534, 2A34148, 3L13234, 3L14591, 3L14430): Change the direction of hydraulic pipe routing, adapting to the limited space on drilling platforms. They are made of corrosion-resistant materials to withstand harsh environments.

• NPS Pipe Non-Detachable Hammer Union (2A12519, 2A12525, 2A12528, 2A22811, 2A22812, 2A22816): Connect large-diameter hydraulic pipes, featuring a secure, non-detachable design that can withstand high pressure and vibration.

• Bull Plugs and Gauge Plugs (1502M / 1502F, 3A20349, 3A20681): Seal the ends of hydraulic pipes or measure system pressure, ensuring system integrity and facilitating pressure monitoring.

5. Cables (YNJ200/15 Unit)

These specialized cables provide electrical connectivity for the YNJ200/15 Hydraulic Make-up and Break-out Unit, ensuring reliable power transmission and signal communication. Key models include:

• Horizon Cable 444-3C VFD-38M (3240+1150) P/N:9704091141: A 38-meter horizontal cable with DQ70BSC BPM TDS connectors, used to transmit power from the electric house to the bottom of the YNJ200/15 unit. It features waterproof, dustproof, and anti-interference design.

• Vertical Cable 444-3C VFD-38M (3240+1150) P/N:9704091241: A 38-meter vertical cable with matching connectors, used to transmit power from the bottom of the YNJ200/15 unit to the supporter near the monkey board. It is flexible and resistant to wear from vertical movement.

• Traveling Cable 444-3C VFD-30M (3240+1150) P/N:9704091340: A 30-meter traveling cable with connectors, used to transmit power from the supporter to the main motor of the YNJ200/15 unit. It is designed to withstand repeated bending and movement during equipment operation.

6. Structural & Protective Components

These parts provide structural support and protection for internal components, ensuring the overall stability and safety of the equipment. Key models include:

• N151-1 NJ200-01.01 Unit head shell: Protects the internal mechanical components (gears, shafts, bearings) of the NJ200-01 unit head from dust, drilling fluid, and physical damage.

• N151-89 NJ200-01.48 Cabinet: Houses electrical and hydraulic control components of the NJ200-01 series machinery, providing protection from harsh environmental conditions (moisture, dust, vibration).

• N151-48 GB/T1152 Oil cap M101: Seals the oil filling port of the unit head, preventing oil leakage and protecting internal components from contaminants.

7. Small Components & Fasteners

These small but critical parts ensure the proper assembly and operation of the equipment, with models including:

• N151-54 NJ200-01.32 Retainer ring: Secures gears, bearings, and other components in place, preventing axial movement and ensuring stable operation.

• N151-53 NJ200-01.33 Clutch gear: Controls the engagement and disengagement of power transmission, allowing for safe maintenance and operation of the equipment.

Function Description

1. Mechanical Transmission Components Functions

• Power Transmission: The N151-79 Spline gear (YNJ200/15-compatible) and main shaft (N151-47) transmit power from the motor to the drill pipe connection mechanism of the YNJ200/15 unit, ensuring stable torque output for efficient make-up and break-out operations.

• Speed Adjustment: Main shaft gears (N151-80), duplex gears (N151-86), and shifting gears (N151-57) adjust the speed of power transmission, adapting to different drill pipe sizes and connection torque requirements.

• Precise Engagement: Spline shafts (N151-77, N151-44) and inner spline gears (N151-56) ensure tight, precise engagement between rotating components, reducing wear and noise and preventing power loss.

2. Bearings & Supporting Components Functions

• Friction Reduction: GB/T276 deep groove ball bearings and GB/T283 short cylinder roller bearings reduce friction between rotating components (main shafts, gears), ensuring smooth operation and extending the service life of mechanical parts.

• Component Securing: Circlips (GB/T893.2) and retainer rings (N151-54) secure bearings, gears, and other components in place, preventing axial movement that could cause misalignment and equipment failure.

• Precise Alignment: Spacers (N151-45) and bushings (N151-46) maintain proper spacing between components, ensuring precise alignment and reducing uneven wear.

3. Hydraulic Valves Functions

• Flow Control: Plug valves (2A25182 series) control the on/off of hydraulic fluid flow, allowing operators to start or stop hydraulic components (e.g., make-up/break-out cylinders) as needed.

• Backflow Prevention: Check valves (2A43982 series) prevent hydraulic oil from flowing backward, ensuring the hydraulic system maintains stable pressure and protecting pumps and other components from damage.

• Overpressure Protection: Spring style relief valves (2A18138 series) release excess hydraulic pressure when it exceeds the safe limit, preventing system damage and ensuring operational safety.

• Pressure Unloading: Full bore unloading valves (1A23392 series) unload hydraulic pressure when the system is idle, reducing energy consumption and extending the service life of hydraulic pumps.

4. Pipe Connections & Fittings Functions

• Fluid Transmission: Pipe tees, ells, and hammer unions connect hydraulic pipes and hoses, ensuring leak-proof transmission of hydraulic oil between components (valves, cylinders, pumps) of the YNJ200/15 unit and TEDA systems.

• Flow Diversion & Direction Change: Pipe tees split hydraulic fluid flow into multiple paths, while pipe ells change the direction of pipe routing, adapting to the limited space on drilling platforms and facilitating the operation of multiple hydraulic components.

• System Sealing: Bull plugs and gauge plugs seal the ends of hydraulic pipes or allow for pressure measurement, ensuring system integrity and facilitating maintenance and monitoring.

5. Cables Functions

• Power Transmission: Horizon, vertical, and traveling cables (444-3C VFD series) transmit electrical power from the electric house to the main motor and other electrical components of the YNJ200/15 unit, ensuring reliable operation.

• Signal Communication: These cables also transmit control signals between the electric house and the YNJ200/15 unit, allowing operators to control the make-up and break-out process remotely.

• Environmental Protection: The cables feature waterproof, dustproof, and anti-interference designs, ensuring reliable performance in harsh drilling environments (moisture, dust, electromagnetic interference).

6. Structural & Protective Components Functions

• Component Protection: The unit head shell (N151-1) and cabinet (N151-89) protect internal mechanical and electrical components from dust, drilling fluid, moisture, and physical damage, extending their service life.

• Oil Sealing: The oil cap (N151-48) seals the oil filling port of the unit head, preventing oil leakage and protecting internal components from contaminants.

7. Small Components & Fasteners Functions

• Component Securing: Retainer rings (N151-54) secure gears, bearings, and other components in place, ensuring stable operation and preventing damage from axial movement.

• Power Control: Clutch gears (N151-53) control the engagement and disengagement of power transmission, allowing operators to safely stop power flow for maintenance or emergency situations.

Structural Features

1. General Structural Features (All Product Categories)

• Precision Machining: All parts are manufactured using CNC precision machining equipment, with strict control of dimensional accuracy (tolerance within ±0.01mm) and surface roughness. This ensures perfect compatibility with the YNJ200/15 unit, NJ200-01 series, and TEDA systems, no installation gaps, and stable operation after replacement.

• Premium Material Selection: Key components are made of high-strength alloy steel (ASTM A105, AISI 4140), stainless steel, corrosion-resistant brass, and wear-resistant engineering plastics—selected based on the specific function and working environment of each part. This ensures high structural strength, wear resistance, and corrosion resistance.

• Strict Quality Compliance: All mechanical components comply with GB/T national standards (for bearings, circlips) and API 7K industry standards; hydraulic valves and pipe fittings comply with NFPA standards; cables use high-quality copper conductors and waterproof insulation materials. Each part undergoes strict quality inspection before leaving the factory.

• Easy Installation: All parts are designed to match the original equipment’s installation structure, with simple and reasonable installation steps. No modifications to the original equipment are required, and maintenance personnel can complete replacement and installation quickly with common tools.

• Harsh Environment Adaptability: Critical components are treated with anti-corrosion coatings (chrome plating, zinc plating) or made of corrosion-resistant materials to withstand salt spray (offshore), drilling fluid, and moisture. Cables feature waterproof, dustproof, and anti-aging insulation to adapt to extreme drilling conditions.

2. Category-Specific Structural Features

• Mechanical Transmission Components: Spline gears (N151-79) and main shafts (N151-47) feature precision tooth profiles and heat treatment (quenching, tempering) to improve hardness and wear resistance; spline shafts have a smooth surface to reduce friction and ensure tight engagement.

• Bearings & Supporting Components: GB/T276 deep groove ball bearings have a sealed design to prevent dust and moisture from entering; short cylinder roller bearings (GB/T283, GB/T284) have a robust structure to withstand high radial and axial loads.

• Hydraulic Valves: Plug valves and check valves feature precision-machined valve cores and seats for tight sealing; relief valves have adjustable spring tension to adapt to different pressure requirements; all valves are designed to withstand high hydraulic pressure (up to 35MPa).

• Pipe Connections & Fittings: Hammer unions have a secure locking mechanism to prevent leakage under high pressure and vibration; pipe tees and ells have thickened walls for high structural strength; all fittings are made of corrosion-resistant materials to extend service life.

• Cables: 444-3C VFD cables use high-conductivity copper conductors for efficient power transmission; insulation materials are waterproof, oil-resistant, and anti-aging; connectors (DQ70BSC BPM TDS) feature a secure, leak-proof design to ensure reliable connection.

Applicable Working Conditions

Our spare parts are specifically designed to withstand the harsh working conditions of oil and gas drilling operations, with strong environmental adaptability, and are fully compatible with the YNJ200/15 Hydraulic Make-up and Break-out Unit, NJ200-01 series machinery, and TEDA-compatible systems in the following scenarios:

1. Onshore & Offshore Drilling Platforms

Suitable for both onshore (desert, grassland, mountain) and offshore (marine) drilling environments. Our parts resist corrosion from salt spray (offshore), dust (onshore), and moisture, ensuring stable performance even in high-humidity (relative humidity up to 95%) or salt-rich environments. For example, pipe fittings and cables are treated with anti-corrosion coatings, and hydraulic valves use corrosion-resistant materials to extend service life in marine environments.

2. High-Pressure & High-Load Operations

Ideal for high-pressure hydraulic operations of the YNJ200/15 unit (make-up and break-out of drill pipes) and high-load power transmission of the NJ200-01 series machinery. Components such as hydraulic valves (2A18138 series), spline gears (N151-79), and bearings (GB/T283) have high load-bearing capacity and pressure resistance, withstanding long-term high loads and high pressure without deformation or failure.

3. Extreme Temperature Environments

Can work normally in extreme temperature ranges from -40℃ to 80℃. High-temperature resistant materials are used for hydraulic valve seals and cable insulation, preventing performance degradation in high-temperature environments; low-temperature resistant materials ensure that parts like bearings, gears, and cables do not become brittle or crack in cold environments (e.g., desert winters or arctic drilling sites).

4. High-Vibration Environments

Adapt to high-vibration working conditions of drilling platforms. Components such as hammer unions (2A12519 series), retainer rings (N151-54), and cables are designed to withstand high vibration (up to 10g), ensuring tight connections and stable performance without loosening or damage.

5. TEDA Hydraulic System Operations

All hydraulic valves, pipe connections, and mechanical components (e.g., N151-79 spline gear) are fully compatible with TEDA systems, suitable for their specific hydraulic pressure and power requirements. They ensure seamless integration and stable performance in TEDA-equipped drilling operations.

Maintenance & Care Suggestions

Proper maintenance and care are key to extending the service life of spare parts, reducing failure rates, and ensuring the stable operation of the YNJ200/15 Hydraulic Make-up and Break-out Unit, NJ200-01 series machinery, and TEDA-compatible systems. Below are practical, easy-to-follow maintenance suggestions based on on-site experience and industry standards, tailored to our spare parts:

1. Daily Maintenance (Daily Inspection)

• Mechanical Components: Check spline gears (N151-79), main shafts (N151-47), and bearings for abnormal noise or vibration; ensure retainer rings (N151-54) and circlips are securely in place; clean rotating components to remove debris that could cause friction.

• Hydraulic Valves & Fittings: Check plug valves (2A25182 series), check valves, and relief valves for oil leakage; inspect pipe connections and hammer unions for tightness; ensure hydraulic pressure is within the safe range.

• Cables: Inspect horizon, vertical, and traveling cables for damage (cuts, cracks) to insulation; check connectors (DQ70BSC BPM TDS) for tightness and corrosion; ensure cables are not tangled or stretched excessively.

• Structural Components: Check the unit head shell (N151-1) and cabinet (N151-89) for damage; ensure the oil cap (N151-48) is securely sealed and there is no oil leakage.

2. Regular Maintenance (Weekly/Monthly/Quarterly)

• Lubrication: Every week, add API GL-4 standard lubricating oil (or grease) to bearings (GB/T276, GB/T283), spline gears (N151-79), and spline shafts (N151-77) to ensure smooth operation and reduce wear. Lubricate shifting mechanisms every two weeks.

• Wear Inspection: Every month, inspect the wear condition of gears (N151-79, N151-80), bearings, and hydraulic valve seals. Replace parts if wear exceeds the limit (e.g., gear tooth wear more than 0.5mm, seal damage).

• Hydraulic System Maintenance: Every month, check the hydraulic oil level and quality; replace hydraulic oil every 6 months (or 2000 operating hours) to prevent oil contamination. Clean hydraulic valves and filters to ensure smooth fluid flow.

• Cable Maintenance: Every month, clean cables and connectors to remove dust and moisture; inspect cable insulation for aging or damage; replace damaged cables immediately to prevent electrical faults.

• Anti-Corrosion Maintenance: Every quarter, inspect the anti-corrosion coating of pipe fittings, gears, and cables. Reapply anti-corrosion coating if the coating is damaged or worn to prevent rust and corrosion.

3. Long-Term Storage Maintenance

• Store spare parts in a dry, ventilated, and clean warehouse, away from moisture, dust, and corrosive media (such as drilling fluid, acid, alkali). Keep the warehouse temperature between 5℃ and 30℃ to avoid extreme temperature damage.

• Coat metal parts (gears, bearings, pipe fittings) with anti-rust oil before storage; wrap hydraulic valves and cables with waterproof and dustproof materials to prevent damage. For bearings, add lubricating grease to prevent rust.

• Regularly inspect stored spare parts every 3 months, clean and reapply anti-rust oil if necessary, and ensure that all parts are in good condition and ready for use at any time.

4. Maintenance Notes

• Maintenance personnel must receive professional training, be familiar with the structure and function of the YNJ200/15 unit, NJ200-01 series, and TEDA systems, and strictly follow the maintenance procedures to avoid improper operation causing damage to parts or equipment.

• Use special tools and matching auxiliary materials (lubricating oil, seals) during maintenance. Do not use inferior or incompatible materials, as this could reduce the service life of parts or cause system failure.

• Record maintenance details (time, content, replaced parts) in a log to establish a maintenance file. This helps track the use and maintenance status of parts, optimize maintenance schedules, and quickly identify potential problems.

• When replacing spare parts, ensure the new part matches the original equipment model (YNJ200/15, NJ200-01) and check the part’s quality (surface condition, dimensional accuracy) before installation. For hydraulic components, bleed air from the system after replacement to ensure stable operation.

We supply the following spare parts:

Plug Valves 2A25182 2A25154 2A25168HB

Check Valves 2A43982 2A43980 1A19662C

Check Valves 1A19485C 1A18614C

Spring Style Relief Valve 2A18138 2A18544

Full Bore Unloading Valve 1A23392 2A33687

Integral Connections and Pipe Tees 2A13794 2A16770

Integral Connections and Pipe Tees 2A27998 2A25990

Integral Connections and Pipe Wyes 3L13139 2L14419

Integral Connections and Pipe Ells 3A20534 2A34148

Integral Connections and Pipe Ells 3L13234 3L14591 3L14430

Crosses 3L11607 3L11608 3L12838

NPS Pipe Non-Detachable Hammer Union 2A12519 2A12525 2A12528

NPS Pipe Non-Detachable Hammer Union 2A22811 2A22812 2A22816

Pup Joints Hammer Union 2A38935 2A20522 2A27906

Pup Joints Hammer Union 2A27907 2A20528 2A20531

Bull Plugs and Gauge Plugs 1502M / 1502F 3A20349 3A20681

Horizon Cable 444-3C VFD-38M(3240+1150)-P/N:9704091141/[ Ground Cable : 38m , from electric house tothe bottom of With CONNECTOR DQ70BSC BPM TDS

Vertical Cable 444-3C VFD-38M(3240+1150)-P/N:9704091241/ Cable:38m , from the bottom to supporter nearby monkey boardWith CONNECTOR DQ70BSC BPM TDS

Traveling Cable 444-3C VFD-30M(3240+1150) P/N:9704091340 /Traveling Cable:30m,from the supporterto main motor With CONNECTOR DQ70BSCBPM TDS

YNJ200/15 Hydraulic Make-up and Break-out Unit

N151-89 NJ200-01.48 Cabinet

N151-78 GB/T276 Deep groove ball bearing 111

N151-79 NJ200-01.43A Spline gear (1)

N151-77 XYQ12.Z-26 Spline shaft

N151-81 GB/T276 Deep groove ball bearing 208

N151-47 NJ200-01.31A Main shaft

N151-80 NJ200-01.44B Main shaft gear

N151-85 GB/T276 Deep groove ball bearing 217

N151-1 NJ200-01.01 Unit head shell

N151-57 NJ200-01.37 Shifting gear

N151-58 NJ200-01.36 Shaft sleeve

NI51-59 NJ200-01.35 Inner spline sleeve

N151-60 NJ200-01.38 Inner gear sleeve

N151-56 NJ200-01.34 Inner spline gear (2)

N151-55 GB/T276 Deep groove ball bearing 109

N151-53 NJ200-01.33 Clutch gear

N151-54 NJ200-01.32 Retainer ring

N151-52 GBAT276 Deep groove ball bearing 307

N151-48 GB/T1152 Oil cap MlOl

N151-88 GB<T284 Short cylinder roller bearing 292305

N151-87 GBE893.2 Circlip for hole 62

N151-86 NJ200-01.47 Duplex gear

N151-84 NJ200-01.46 Duplex gear shaft

N151-37 GB/T283 Short cylinder roller bearing 42408

N151-45 NJ200-01.29 Spacer

N151-90 NJ200-01.49 Duplex large gear

N151-46 NJ200-01.28 Bushing

N151-43 NJ200-01.26 Duplex small gear

N151-44 NJ200-01.27 Spline shaft

N151-38 NJ200-01.23 Idler gear shaft

On-Site Fault Maintenance Cases

Below are 4 real on-site fault maintenance cases from our oilfield customers, detailing common faults of the YNJ200/15 unit, NJ200-01 series, and TEDA-compatible systems, their causes, and solutions using our spare parts. These cases help you quickly identify and resolve similar problems, reduce downtime, and improve maintenance efficiency:

Case 1: Spline Gear Wear Causing Power Transmission Failure

Site: An onshore oilfield drilling platform, using YNJ200/15 Hydraulic Make-up and Break-out Unit with NJ200-01 series machinery.

Fault Phenomenon: The YNJ200/15 unit failed to transmit power to the drill pipe connection mechanism, and the main shaft made abnormal noise. The make-up/break-out operation could not be performed, forcing the drilling operation to stop.

Cause Analysis: On-site inspection found that the N151-79 NJ200-01.43A Spline gear (for YNJ200/15) was severely worn, with tooth surface damage and uneven wear. This was caused by long-term high-load operation without regular lubrication, leading to poor meshing and power transmission failure.

Solution: Replace the worn spline gear with our new N151-79 NJ200-01.43A Spline gear. Clean the power transmission system, add API GL-4 standard lubricating grease, and adjust the gear meshing gap. After replacement, the abnormal noise disappeared, and the YNJ200/15 unit transmitted power normally. The drilling operation resumed within 2 hours.

Experience Summary: Regular lubrication of spline gears is critical to reducing wear. Follow the weekly lubrication schedule, and inspect gear wear every month to avoid serious damage to the power transmission system.

Case 2: Hydraulic Valve Leakage Causing System Pressure Loss

Site: A deep well drilling site, using TEDA-compatible hydraulic system with YNJ200/15 unit.

Fault Phenomenon: The hydraulic system of the YNJ200/15 unit had serious oil leakage, leading to rapid pressure loss. The drill pipe clamping force was insufficient, posing a safety hazard.

Cause Analysis: Inspection found that the 2A25182 Plug Valve was worn, and the valve core seal was damaged. This caused hydraulic oil to leak, reducing system pressure and affecting the unit’s operation.

Solution: Replace the worn plug valve with our new 2A25182 Plug Valve. Clean the valve installation position, replace the seal, and refill the hydraulic system with clean oil. After replacement, the leakage was completely eliminated, and the hydraulic system maintained stable pressure. The YNJ200/15 unit resumed normal operation within 1.5 hours.

Experience Summary: Regularly check hydraulic valves for leakage. Replace worn valves and seals in time to maintain system pressure and ensure the safe operation of the YNJ200/15 unit.

Case 3: Bearing Seizure Causing Main Shaft Jamming

Site: An offshore drilling platform, using NJ200-01 series machinery with YNJ200/15 unit.

Fault Phenomenon: The main shaft (N151-47) of the NJ200-01 unit head was jammed and could not rotate. The YNJ200/15 unit could not operate, and the main shaft made a harsh noise when attempting to start.

Cause Analysis: Disassembly inspection found that the GB/T276 Deep groove ball bearing 208 was seized due to lack of lubrication and dust contamination. This caused the main shaft to jam and prevented power transmission.

Solution: Replace the seized bearing with our new GB/T276 Deep groove ball bearing 208. Clean the main shaft and bearing installation position, add lubricating grease, and reassemble the unit head. After replacement, the main shaft rotated smoothly, and the YNJ200/15 unit operated normally.

Experience Summary: Regular lubrication and cleaning of bearings are essential to prevent seizure. Follow the weekly lubrication schedule and daily inspection to avoid bearing damage and main shaft jamming.

Case 4: Cable Damage Causing Electrical Failure

Site: A drilling platform, using YNJ200/15 Hydraulic Make-up and Break-out Unit.

Fault Phenomenon: The YNJ200/15 unit’s main motor failed to start, and the control system showed no power supply. Inspection found that the traveling cable (444-3C VFD-30M) was damaged, with insulation cracks and copper conductor exposure.

Cause Analysis: The traveling cable was damaged due to repeated bending and friction during equipment operation, leading to insulation failure and power interruption. The damage was not found in daily inspections, resulting in electrical failure.

Solution: Replace the damaged traveling cable with our new 444-3C VFD-30M Traveling Cable (P/N:9704091340). Connect the cable using DQ70BSC BPM TDS connectors, test the electrical connection, and ensure insulation is intact. After replacement, the main motor started normally, and the YNJ200/15 unit resumed operation.

Experience Summary: Pay close attention to cable condition during daily inspections, especially traveling cables that are prone to wear. Replace damaged cables immediately to prevent electrical faults and ensure equipment safety.

Procurement & Technical Reference Standards

1. Procurement Reference Standards

To help you purchase the right spare parts accurately and efficiently, we provide the following procurement reference standards, ensuring that the parts you buy are compatible with your YNJ200/15 unit, NJ200-01 series, and TEDA systems and meet industry quality requirements:

• Model Matching Standard: Confirm the original equipment model (YNJ200/15, NJ200-01) and the part number of the spare part to be replaced (e.g., N151-79, 2A25182, 444-3C VFD-38M). Our parts are 100% compatible with the original model, and we conduct 1:1 compatibility testing before delivery to ensure no installation issues.

• Quality Standard: All spare parts comply with API 7K (drilling equipment parts), ISO 9001 quality management system, GB/T national standards (bearings, circlips), and NFPA hydraulic standards. Each part undergoes strict quality inspection (dimensional accuracy, material composition, performance testing) before leaving the factory, with a complete quality inspection report provided upon request.

• Material Standard: Mechanical components are made of high-strength alloy steel (ASTM A105, AISI 4140) or stainless steel; hydraulic valves and pipe fittings use corrosion-resistant brass or steel; cables use high-conductivity copper conductors and waterproof insulation materials. All materials meet industry standards for drilling equipment.

• Compatibility Verification: Before procurement, our professional technical team can help you verify the compatibility of spare parts with your equipment. Provide us with your equipment model or original part number, and we will confirm the matching part and provide detailed specifications and pictures for verification.

2. Technical Reference Standards

To help you solve technical problems during use and maintenance, we provide the following technical reference standards, based on years of on-site experience and equipment manufacturer requirements:

• Installation Standard: All parts are installed in accordance with the original YNJ200/15, NJ200-01 series, and TEDA equipment installation manual. We provide detailed installation steps and precautions for each part, and for complex components (e.g., spline gears, hydraulic valve assemblies, cables), we can provide on-site technical guidance.

• Fault Diagnosis Standard: Refer to the on-site maintenance cases and FAQ in this document. Based on the fault phenomenon (e.g., leakage, abnormal noise, jamming, electrical failure), you can quickly identify the cause and take corresponding solutions. Our technical team is also available 24/7 to provide fault diagnosis support.

• Maintenance Standard: Follow the maintenance and care suggestions provided in this document, combined with your equipment’s operation frequency and working environment, to formulate a reasonable maintenance plan. Adhere to the "prevention first, maintenance combined" principle to extend the service life of parts and equipment.

• Technical Support: Our technical team has more than 10 years of experience in YNJ200/15, NJ200 series, and TEDA equipment maintenance. We provide 24/7 online technical consultation, on-site technical guidance, and maintenance training to help you improve maintenance efficiency and solve technical problems quickly.

FAQ (Frequently Asked Questions)

Procurement Guidance

As a professional supplier of spare parts for the YNJ200/15 Hydraulic Make-up and Break-out Unit, NJ200-01 series machinery, and TEDA-compatible systems, we are committed to providing you with high-quality, compatible, and cost-effective products, along with comprehensive technical support and after-sales service. Our core mission is to support your drilling operations by ensuring you have access to reliable, readily available spare parts that minimize downtime, reduce maintenance costs, and maximize operational efficiency—all with a focus on meeting your spare part procurement needs.

Our spare parts offer distinct advantages that set us apart: 100% compatibility with YNJ200/15, NJ200-01, and TEDA systems, strict compliance with API 7K, ISO 9001, and GB/T standards, premium materials and precision machining for durability, professional on-site and online technical support, and a reliable quality guarantee. We maintain a complete supply chain and sufficient inventory to quickly respond to your procurement needs—whether you require emergency replacement parts (e.g., failed valves, broken cables, worn gears) to resume critical operations or regular maintenance parts (e.g., bearings, retainer rings) to keep your equipment running smoothly.

We understand that every drilling operation is unique, which is why we offer customized procurement solutions based on your equipment model, maintenance schedule, and budget. Whether you need a single critical part (such as the N151-79 Spline gear, 2A25182 Plug Valve, or 444-3

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Should you have any purchase intentions, please contact us – we will offer you our most favorable price.