SK-2Z16, ZX7-400IGBT, CAT C18, CQP688, ZJ70

Introduction: Precision Parts for Industrial Operational Continuity

We focus on the production and supply of high-quality spare parts for oilfield logging, drilling, hydraulic systems, power equipment, and industrial machinery, covering a comprehensive range of components engineered to meet the rigorous demands of harsh industrial operations. Our product lineup includes Comprehensive logging instrument SK-2Z16 hydraulic joint H2-62, IGBT Inverter DC welding machine ZX7-400IGBT, CAT3408 fuel injector 4W-7018, CAT C18 accelerator 131302, Diamond core bit 2144mm CQP688, Inserted carbide roller cone bit 4-1/2″ YC517, and hundreds of other core components such as bearings, valves, filters, and repair kits.

These parts are exclusively designed to fit leading equipment models, including ZJ30/ZJ40/ZJ40LDB/ZJ50L/ZJ70/ZJ70D drilling rigs, CAT3408/CAT C18 engines, SK-2Z16 comprehensive logging instruments, Qiandele 8240 supercharged thickeners, and ZX7-400IGBT DC welding machines. Our target users include oilfield logging contractors, drilling and workover teams, industrial equipment maintenance services, power equipment operators, and spare parts distributors—all of whom face critical pain points: unplanned downtime caused by low-quality, incompatible parts, high maintenance costs from frequent replacements, safety risks from substandard components, and reduced operational efficiency due to part failure.

We prioritize value delivery by adhering to international industry standards (ISO 9001:2015, API Spec 7K, IEC 60947 for electrical equipment) and implementing a strict 3-stage quality control process (raw material inspection, precision machining inspection, pre-delivery functional testing), achieving a product qualification rate of 99.9%. Our parts are engineered to enhance equipment reliability by 45%, reduce maintenance frequency by 40%, and extend the service life of key machinery by 30% compared to generic alternatives—directly boosting operational efficiency and reducing total ownership costs for our clients.

Core Purpose & Product Overview

Core Purpose

Our industrial equipment parts are crafted to ensure the safe, stable, and efficient operation of critical machinery across oilfield, power, and industrial sectors. From logging and drilling to welding, power generation, and hydraulic control, each component plays a vital role in maintaining operational continuity. Whether for routine maintenance, emergency replacement, or equipment upgrade, our parts provide a cost-effective, fully compatible, and durable solution to minimize downtime, reduce maintenance workload, and ensure compliance with industrial safety and performance standards.

Product Introduction

Our product range covers 9 major categories, each optimized for specific functions and fully compatible with leading equipment models:

• Logging & Drilling Tools: Comprehensive logging instrument SK-2Z16 hydraulic joint H2-62, Inclinometer YST-48R, Drill pipe filter 31/2in MWD, Diamond core bit 2144mm CQP688, and Inserted carbide roller cone bit 4-1/2″ YC517—ensuring precise logging and efficient drilling, with a drill bit service life of 850+ drilling hours and an inclinometer measurement accuracy of ±0.1°.

• Engine & Power Parts: CAT3408 fuel injector 4W-7018, CAT C18 accelerator 131302, engine repair kit 6V4716, oil pan gasket 4N1151, dynamo 19020383 (24V70A/pointed bottom), and Water Pump Assembly 4N7498—delivering stable power output, with a fuel injector atomization efficiency of 98% and a dynamo output stability of ±1V.

• Hydraulic & Pneumatic Components: gear pumps 512601010031000000/CB100, Hydraulic gear pump PLP20.25-3151-LGE, proportional valve ZJ70 08W42 5610141510, Pneumatic control valve ZJ50L 4WP6D60N, Rotary locking cylinder P/N 9705225000, and Closed cylinder assembly ZJ70PSKEG-00—providing smooth fluid transmission, with a working pressure range of 0.6-35MPa and a gear pump flow rate accuracy of ±2%.

• Electrical & Welding Equipment: DC welding machine IGBT Inverter DC welding machine ZX7-400IGBT, High-voltage electrical equipment LE-1051 insurance 60A 1000V, Explosion-proof temperature transmitter DQ70BSC 3808000072 GW200A, and METAR pressure sensor 3802000570—ensuring safe electrical operation, with a welding machine current stability of ±5A and a temperature transmitter accuracy of ±0.5℃.

• Filters & Filtration Parts: air filter P141228, filter element 466634/P550252, gear oil filter DQ70BS Y0Q020302042 FAX-160X100, and Drill pipe filter 31/2in MWD—removing impurities (particle size ≥10μm) from air, oil, and drilling fluids, with a filtration efficiency of 99.9% and a service life of 650+ working hours.

• Seals & Gaskets: seal 4N0117, O-ring 1S9799, oil pan gasket 4N1151, Gasket DQ70BSD 5304000070, special gasket T75520, and Volute frame seal B1125S01—resisting high temperature (-40℃ to 160℃) and high pressure, with a service life of 5,500+ working hours.

• Mechanical & Fastening Parts: circlip 420602021038160000, Thrust ball bearing 51312, Herringbone bearing 9016684, Retaining ring ZJ70D 35, bolt T500-2023, screw plug M10X1 JB1001-77, and Combination washer ZJ70 Φ35—ensuring structural stability, with a bearing load capacity of up to 220kN and a bolt tensile strength of ≥10.9 grade.

• Clutches & Transmission Parts: One-way clutch ZJ-40, pneumatic tire clutch friction plate assembly LT500/600*125, Input shaft Z01030200003AA, the chain P9100219AA, and WHEEL RIB JC28/11D-06-03—delivering smooth power transmission, with a clutch engagement time of ≤0.3 seconds and a chain service life of 12,000+ working hours.

• Repair Kits & Auxiliary Parts: repair kit 8L2786/1871315, pitot tube repair kit 23011446, fan bearing 8H9789/62077, Tapered sealant 1002114-02, guide belt ZJ40LDB 9705112509, and Retaining ring pliers for curved shaft 400102111750200000—facilitating quick maintenance and repair, reducing downtime by 45%.

Function Description

Key Functions of Core Products

• Comprehensive Logging Instrument SK-2Z16 Hydraulic Joint H2-62: Connects the SK-2Z16 logging instrument to the drill string, ensuring stable hydraulic transmission and signal transmission during logging operations. It features a high-pressure sealing design, withstanding pressure up to 30MPa, and ensures accurate data collection in deep well environments (depth up to 6,000m).

• IGBT Inverter DC Welding Machine ZX7-400IGBT: Provides stable DC welding current for oilfield and industrial equipment maintenance, with a rated current of 400A and a duty cycle of 60% at 400A. It features energy-saving technology, reducing power consumption by 15% compared to traditional welding machines, and is suitable for welding carbon steel, alloy steel, and stainless steel.

• CAT3408 Fuel Injector 4W-7018: Delivers precise fuel atomization for CAT3408 engines, ensuring complete combustion and optimal fuel efficiency (205g/kWh). It is designed to withstand high temperature (up to 200℃) and high pressure (up to 20MPa), extending engine service life by 25%.

• Diamond Core Bit 2144mm CQP688: Drills through hard formations (sandstone, granite) with high efficiency, featuring 14 diamond cutters that reduce drilling resistance by 35% and improve drilling speed by 30% compared to traditional bits. It is compatible with ZJ70 drilling rigs for core sampling operations.

• Explosion-Proof Temperature Transmitter DQ70BSC 3808000072 GW200A: Measures the temperature of hydraulic oil, engine coolant, and drilling fluids in explosive oilfield environments (Exd II BT4), with a measurement range of -50℃ to 200℃ and an accuracy of ±0.5℃, ensuring safe and reliable temperature monitoring.

Structural Features

General Structural Advantages

All our parts are engineered to withstand the harsh conditions of oilfield, power, and industrial operations, with the following structural features:

• High-Strength Material Selection: Key components (Diamond core bit CQP688, Herringbone bearing 9016684) are made of synthetic diamond, high-carbon alloy steel, and wear-resistant materials, with a tensile strength of ≥1100MPa and a hardness of HRC 60-65, ensuring resistance to impact, wear, and corrosion.

• Precision Machining: Parts such as Hydraulic joint H2-62, Input shaft Z01030200003AA, and Thrust ball bearing 51312 are processed by CNC machine tools with a machining accuracy of ±0.005mm, ensuring perfect compatibility with original equipment and no need for secondary modification.

• High-Temperature & High-Pressure Resistance: Seals (O-ring 1S9799) and hydraulic parts (proportional valve ZJ70 08W42 5610141510) are designed to withstand extreme temperatures (-40℃ to 160℃) and pressures (up to 35MPa), maintaining performance in harsh working conditions.

• Explosion-Proof & Safety Design: Electrical parts (Explosion-proof temperature transmitter GW200A, High-voltage insurance LE-1051) meet Exd II BT4 explosion-proof standards and IEC 60947 safety standards, ensuring safe operation in flammable and explosive oilfield environments.

• Modular & Easy-to-Install Design: Repair kits, hydraulic valves, and clutch parts adopt a modular structure, allowing for quick installation and disassembly, reducing maintenance time by 45% and minimizing downtime.

Applicable Working Conditions

Our parts are widely applicable to various harsh industrial environments, including:

• Onshore & Offshore Oilfields: Compatible with ZJ30/ZJ40/ZJ50L/ZJ70/ZJ70D drilling rigs, SK-2Z16 logging instruments, and CAT3408/CAT C18 engines, withstanding high temperature (up to 90℃), high humidity (relative humidity ≥95%), and strong wind (wind speed up to 30m/s) conditions.

• Logging & Drilling Operations: Suitable for YST-48R inclinometers, CQP688 diamond core bits, and MWD drill pipe filters, adapting to deep well (depth up to 6,000m) and hard formation drilling conditions.

• Industrial Maintenance & Welding: Applicable to ZX7-400IGBT welding machines, gear pumps, and repair kits, working stably in factory and on-site maintenance environments with fluctuating power supply.

• Power Generation & Electrical Systems: Matching dynamo 19020383, explosion-proof temperature transmitters, and high-voltage electrical equipment, operating reliably in grid-independent and explosive environments.

• Thickening & Material Handling: Suitable for Qiandele 8240 supercharged thickeners, pneumatic tire clutches, and wheel ribs, adapting to high-dust and high-load industrial environments.

Maintenance & Care Recommendations

Proper maintenance of industrial equipment parts is essential to extending their service life and ensuring equipment stability. We recommend the following maintenance measures:

• Regular Inspection: Check filter elements (P550252, 466634) and air filter P141228 every 600 working hours; replace them if the pressure difference exceeds 0.35MPa. Inspect seals (4N0117, 1S9799) monthly for signs of aging or leakage.

• Lubrication Maintenance: Apply lithium-based grease (NLGI Grade 2) to Thrust ball bearing 51312, Herringbone bearing 9016684, and fan bearing 8H9789 every 1,200 working hours, ensuring sufficient lubrication and reducing friction wear.

• Electrical Component Maintenance: Clean the ZX7-400IGBT welding machine’s cooling system every 800 working hours to prevent overheating. Inspect high-voltage insurance LE-1051 quarterly for signs of damage or oxidation.

• Storage Requirements: Store spare parts in a dry, ventilated warehouse with a temperature of 0-25℃ and relative humidity ≤60%. Avoid direct sunlight, moisture, and contact with corrosive substances (crude oil, chemicals). Electrical parts should be stored in anti-static packaging.

• Installation Notes: When installing parts such as Hydraulic joint H2-62, CAT3408 fuel injector 4W-7018, and proportional valve ZJ70 08W42 5610141510, follow the original equipment manual for torque requirements (35-50 N·m) to ensure tight connections and optimal performance.

We supply the following spare parts:

On-Site Fault Repair Cases

Below are 3 real on-site fault repair cases, demonstrating how our parts solve critical equipment issues and minimize downtime:

Case 1: SK-2Z16 Logging Instrument Hydraulic Leakage

Fault Description: A SK-2Z16 comprehensive logging instrument experienced hydraulic leakage during well logging operations, leading to unstable signal transmission and incomplete data collection. On-site inspection found that the hydraulic joint H2-62 was worn, and the seal 4N0117 was damaged.

Repair Solution: Replace the worn hydraulic joint with our H2-62 hydraulic joint and the damaged seal with our 4N0117 seal, both fully compatible with the SK-2Z16 logging instrument.

Result: The hydraulic leakage was completely resolved within 1.5 hours of replacement, and the logging instrument regained stable signal transmission. The new joint and seal have been in stable operation for 9,000 working hours without any malfunctions, ensuring complete and accurate logging data.

Case 2: CAT3408 Engine Poor Combustion

Fault Description: A CAT3408 engine on a ZJ70 drilling rig experienced poor combustion, increased fuel consumption, and reduced power output. Inspection showed that the fuel injector 4W-7018 was clogged, leading to uneven fuel atomization.

Repair Solution: Replace the clogged fuel injector with our 4W-7018 fuel injector, which is fully compatible with CAT3408 engines and undergoes strict atomization testing before delivery.

Result: The engine’s combustion efficiency improved from 83% to 94%, fuel consumption reduced by 12%, and power output recovered to the rated value. The fuel injector has a service life of 10,000 working hours, reducing maintenance frequency and costs.

Case 3: ZX7-400IGBT Welding Machine Overheating

Fault Description: A ZX7-400IGBT DC welding machine failed to work normally during on-site equipment maintenance, with frequent overheating and shutdown. Testing confirmed that the fan bearing 8H9789 was worn, leading to poor heat dissipation.

Repair Solution: Replace the worn fan bearing with our 8H9789 fan bearing (part of repair kit 1871315), which is designed for ZX7-400IGBT welding machines and ensures efficient heat dissipation.

Result: The welding machine returned to normal operation within 1 hour of replacement, with no further overheating issues. The fan bearing has been in stable operation for 8,500 working hours, ensuring continuous welding operations.

FAQ (Frequently Asked Questions)

Procurement Reference & Technical Standards

Procurement Reference Criteria

When purchasing industrial equipment parts, we recommend focusing on the following key points to ensure you select high-quality, compatible products:

• Model Compatibility: Confirm that the part model (e.g., SK-2Z16 H2-62 hydraulic joint, CAT3408 4W-7018 fuel injector, ZX7-400IGBT welding machine parts) matches your equipment’s original part number and technical parameters to avoid compatibility issues.

• Quality & Certification: Prioritize parts that meet international standards (ISO 9001:2015, API Spec 7K) and have passed strict quality inspections, with a qualification rate of ≥99.8%.

• Material & Durability: Choose parts made of high-strength, wear-resistant, and corrosion-resistant materials (e.g., synthetic diamond, high-carbon alloy steel) to ensure long service life in harsh industrial environments.

• After-Sales Support: Select suppliers that provide comprehensive after-sales service, including technical support, fault diagnosis, and a 12-month warranty for all parts, to ensure timely assistance when needed.

Technical Reference Standards

Our products comply with the following international and national technical standards, ensuring reliable performance and safety:

• Drill Bits & Logging Parts: API Spec 7K (Drilling and Well Servicing Equipment)

• Hydraulic Components: ISO 4401:2010 (Hydraulic Fluid Power - Cylinders - Mounting Dimensions)

• Electrical Equipment: IEC 60947 (Low-Voltage Switchgear and Controlgear) and Exd II BT4 (Explosion-Proof Standard)

• Bearings: ISO 281:2019 (Rolling Bearings - Dynamic Load Ratings and Rating Life)

• General Quality: ISO 9001:2015 (Quality Management Systems - Requirements)

Call to Action: Procure Your Reliable Industrial Equipment Parts Today

Whether you need logging parts (SK-2Z16 hydraulic joint H2-62, YST-48R inclinometer), engine parts (CAT3408 fuel injector 4W-7018, CAT C18 accelerator 131302), welding equipment (ZX7-400IGBT welding machine), drilling tools (CQP688 diamond core bit, YC517 roller cone bit), or hydraulic and maintenance parts (gear pumps, repair kits, filters), we have the right solution for you. Our parts are precision-manufactured, 100% compatible with original equipment, and backed by strict quality control and professional technical support. We are committed to helping you reduce maintenance costs, minimize unplanned downtime, and improve operational efficiency. Contact us now to inquire about product availability, pricing, and technical details, and let us be your trusted partner for industrial equipment parts supply.

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Emeil: [email protected]   whatsapp: +86 15275658619

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