ZJ50DB, ZJ70, ZJ70LD, FKQ6406E, N540CH18L00 Supply

Introduction

We focus on the production and supply of high-precision, high-durability spare parts for oil drilling rigs, mud pumps, air compressors, winches, BOP systems, and supporting high-voltage electrical, hydraulic, and pneumatic equipment. Our product range fully covers core equipment models including ZJ45, ZJ50, ZJ50DB, ZJ70, ZJ70DB, ZJ70LD, ZJ70D, JC21D Winch, XJFH5/35 Wind Winch, Surface BOP (FKQ6406E, FKQ1280-10), and Allison Governors. Key components we supply include valve plates (VA35-DB4), brake valve handle assemblies (ZJ50DB AD-MICO), high-voltage thyristors (WESTCODE UK N540CH18L00 0316), brake friction discs (Dellner 5601000070), mud pump piston rods (36001-0519A), isokinetic ball cage cardan shafts (ZJ70LD BOX365 F500), surface BOP control kit repair kits (FKQ6406E), and gear pumps (P25, AH360010620A00). All products are manufactured in strict compliance with API 7K, API 16A, IEC 60747, and GB/T 30582 standards, with a factory inspection pass rate of 99.9%, material qualification rate of 100%, and dimensional accuracy error ≤±0.01mm. This ensures perfect compatibility with original equipment and effectively solves the pain points of unstable operation, short service life, poor replacement adaptability, and high maintenance costs that users often face when using inferior spare parts in harsh oilfield and industrial environments.

Targeted at oil drilling companies, oilfield exploration and maintenance teams, BOP system operators, industrial equipment repair service providers, and heavy machinery operation enterprises, we accurately match the segmented needs of different users: For oil drilling teams, we provide wear-resistant, high-pressure, and high-temperature core components (such as ZJ70 working pliers assemblies, mud pump piston rods, and isokinetic ball cage cardan shafts) to ensure safe, efficient drilling operations and reduce non-productive downtime; for BOP system operators, we supply high-sealing, reliable repair kits (FKQ6406E, FKQ1280-10) and accessories to maintain the pressure-bearing capacity and safety of BOP systems; for electrical maintenance teams, we offer high-voltage electrical equipment (WESTCODE thyristors, molded case circuit breakers) that meet international safety standards, ensuring stable operation of electrical systems; for equipment maintenance teams, we provide easy-to-install, modular, and long-life spare parts (such as sealing rings, bushings, and filter elements) to reduce maintenance time, labor costs, and inventory pressure. The core purpose of our products is to provide cost-effective, reliable spare parts solutions, helping users reduce operational risks, improve equipment utilization, and lower overall operational costs.

Product Overview

Core Product Categories & Key Models

Our product portfolio covers 13 major categories and more than 85 core models, fully meeting the maintenance, replacement, and upgrade needs of oil drilling rigs, mud pumps, BOP systems, and supporting equipment. Each part is strictly matched to the corresponding equipment model to ensure seamless replacement, stable performance, and direct compatibility with original systems:

• Valve & Hydraulic Parts: Valve plate (VA35-DB4), brake valve handle assembly (ZJ50DB AD-MICO), ZJ-70 air control hydraulic reversing valve (4WP6PD60/N), air valve (4W5424), pressure gauge (3800200029), tee (ZJ70D 9705219025), oil nonel union (ZJ70D 0156.28.05.00/R3)

• Brake System Parts: Brake friction disc (Dellner 5601000070), ZJ-70 brake device, ZJ70DB brake device, BA type sealing ring (BAA28400030), PSZ65A brake device, disc brake connecting pipeline, brake pads (BK-1-6A), ZJ70 working pliers assembly (DBS75-3-00)

• High-Voltage Electrical Equipment: WESTCODE UK thyristor (N540CH18L00 0316), molded case circuit breaker (BRXL-19, BRM1-100/3300), high-voltage electrical equipment (508A452G23), instrument voltage transformer (JDG4-0.66 400/100V)

• Mud Pump Parts: Mud pump piston rod (36001-0519A), frame plate (DG4131), impeller (FAM8145WRT1-A05)

• Transmission & Shaft Parts: Connecting rod (160-8172/2133190), isokinetic ball cage cardan shaft (ZJ70LD BOX365 F500), winch output shaft (ZJ70), cross head (P4400040AA), shaft spacer (B117J05), cat head pulley (P0300026AA), pulley (ZJ45 101.02.02)

• Pump & Compressor Parts: Gear pump (P25), gear pump assembly (AH360010620A00), single stage gear pump (512601010010006300), air compressor (229990), central support copper sleeve (6883005)

• Filter & Sealing Parts: Diesel filter (match IA-192 U78-B3), oil suction filter (TF-400X180F-Y), O-ring (5300100150), double lip oil seal (36001-0408A), sealing ring (P1700030AA), ZJ70 winch output shaft sealing ring (106.06.10.04), tracheal cable gasket (FKQ1280-10 34hole), guide belt (W24-09-301)

• BOP System Parts: Surface BOP control kit repair kit (FKQ6406E)

• Winch & Hoisting Parts: Spring (TPQ124-02), winch drum (JC21D), wind winch (XJFH5/35)

• Fasteners & Structural Parts: Bushing (F075J04, ZJ50 BK-3-7B2), right angle connector (ZG12.7*M24*1.5C), nut casing (648402014), single ear stop washer (420506025180080000), elastic washer (GB93-16)

• Electrical Control Parts: Micro switch (YSL2-15C), Allison Governor (6885571), wirewound potentiometer (WX111(030)1K±5%)

• Instrument Parts: Engine water temperature gauge (7W2060), weight table (SK-EJZM340)

• Auxiliary Parts: Weight table (SK-EJZM340)

Function Description

Each product is independently designed and manufactured according to the functional requirements of the matching equipment, with clear positioning, reliable performance, and precise matching. They effectively solve the core pain points of equipment operation and ensure the stable and efficient operation of the entire equipment system:

• Valve & Hydraulic Parts: The ZJ-70 4WP6PD60/N air control hydraulic reversing valve has a working pressure of 31.5MPa, response time of ≤0.3 seconds, and can realize rapid reversing of the hydraulic system, ensuring flexible operation of the ZJ-70 brake device; the VA35-DB4 valve plate has a sealing performance of ≤0.01MPa leakage, suitable for high-pressure hydraulic systems.

• Brake System Parts: The Dellner 5601000070 brake friction disc has a friction coefficient of 0.45-0.55, heat resistance up to 300℃, and service life of more than 2200 working hours, ensuring reliable braking of drilling rigs; the ZJ70DB BAA28400030 BA type sealing ring has high temperature resistance up to 150℃ and oil resistance, ensuring tight sealing of the brake device without oil leakage.

• High-Voltage Electrical Equipment: The WESTCODE UK N540CH18L00 0316 thyristor has a rated voltage of 5400V, rated current of 1800A, meeting IEC 60747 standards, ensuring stable operation of high-voltage electrical systems in flammable and explosive oilfield environments; the BRM1-100/3300 molded case circuit breaker has a breaking capacity of 10kA, providing effective overcurrent and short-circuit protection.

• Mud Pump Parts: The 36001-0519A mud pump piston rod is made of high-strength alloy steel, with a tensile strength of ≥900MPa, wear resistance of more than 8000 working hours, ensuring stable operation of mud pumps in high-pressure environments; the FAM8145WRT1-A05 impeller has a flow rate of 180m³/h, head of 50m, suitable for mud circulation systems.

• Transmission & Shaft Parts: The ZJ70LD BOX365 F500 isokinetic ball cage cardan shaft has a maximum torque of 5000N·m, working angle of 30°, ensuring stable power transmission in ZJ70LD drilling rigs; the P4400040AA cross head has a wear resistance of more than 3000 working hours, ensuring smooth movement of the mud pump crosshead.

• BOP System Parts: The FKQ6406E surface BOP control kit repair kit includes all core sealing and wearing parts, restoring the BOP’s pressure-bearing capacity to 64MPa, meeting API 16A standards, ensuring the safety of well control operations.

Structural Features

All products adopt scientific and reasonable structural design, combining durability, ease of use, and cost-effectiveness, with outstanding structural features to adapt to harsh industrial working conditions:

1. High-Quality Material Selection: Brake friction discs, piston rods, and gear pumps are made of high-chromium alloy, high-strength steel, and wear-resistant materials; structural parts (shafts, bushings, connecting rods) are made of 40Cr, 20Mn2, and other high-quality alloy steels, after quenching, tempering, and other heat treatment processes, with a hardness of HRC 35-45, tensile strength ≥800MPa, and impact toughness ≥60J/cm², ensuring long-term use under high load and harsh conditions.

2. Precision Manufacturing: Adopt CNC machining, precision grinding, and diamond polishing technologies, with a machining accuracy of ±0.01mm, ensuring that the size, shape, and position tolerance of each part are completely consistent with the original equipment, enabling seamless replacement without additional modification or adjustment.

3. Sealing & Corrosion Resistance: Sealing parts (O-rings, oil seals, gaskets) adopt nitrile rubber (NBR), fluorine rubber (FKM), and high-temperature resistant materials, with high temperature resistance up to 200℃, oil resistance, and corrosion resistance; the surface of metal parts is treated with galvanizing, electrophoresis, or spray painting, with a corrosion resistance grade of C5-M, adapting to humid, salty, and dusty oilfield and industrial environments.

4. Easy Installation & Disassembly: The structural design is optimized according to the original equipment, and the connection method is consistent with the original parts, without the need for special tools. The installation and disassembly time can be reduced by 40%, improving maintenance efficiency.

5. Modular & Universal Design: For core components such as BOP repair kits, filter elements, and sealing rings, a modular design is adopted, which is convenient for partial replacement and maintenance, reducing maintenance costs; some universal parts (such as O-rings, elastic washers) can be used for multiple equipment models, improving product versatility and reducing user inventory pressure.

Application Working Conditions

Our products are widely used in oil drilling, oilfield exploration and development, BOP system operation, industrial equipment maintenance, and other fields, and can stably adapt to various harsh working conditions, fully meeting the actual operation needs of users and ensuring stable equipment operation:

• Oil Drilling Rigs (ZJ45, ZJ50, ZJ50DB, ZJ70, ZJ70DB, ZJ70LD, ZJ70D): Suitable for onshore and offshore drilling operations, able to withstand high temperature (-40℃ ~ 150℃), high pressure (up to 64MPa), strong vibration (vibration frequency 10-50Hz), and dusty, salty, and humid environments.

• BOP Systems (FKQ6406E, FKQ1280-10): Applicable to oilfield well control operations, able to adapt to high pressure (up to 64MPa), flammable and explosive environments, ensuring the safety of drilling operations.

• Mud Pumps & Air Compressors: Suitable for oilfield mud circulation and air supply operations, able to adapt to high load, frequent start-stop, and high-wear working conditions.

• Winches & Hoisting Equipment (JC21D Winch, XJFH5/35 Wind Winch): Suitable for oilfield hoisting and material transportation, able to adapt to high load and harsh outdoor environments.

• Other Fields: High-voltage electrical parts are suitable for flammable and explosive oilfield electrical systems; instruments and gauges are suitable for on-site monitoring of oilfield equipment; auxiliary parts are suitable for various equipment assembly and maintenance scenarios.

Maintenance & Care Suggestions

To extend the service life of the products, reduce equipment failure rate, and ensure the stable operation of the entire equipment system, we provide practical, easy-to-operate maintenance and care suggestions, helping users reduce maintenance costs and improve equipment utilization:

1. Regular Inspection: For hydraulic valves, brake components, sealing parts, and gears, conduct a comprehensive inspection every 100 working hours, check for wear, cracks, deformation, and leakage, and replace them in time if any abnormality is found; for mud pump piston rods, friction discs, and pump parts, check for wear and damage every 200 working hours.

2. Cleaning & Replacement: Clean the surface of filters (diesel filter U78-B3, oil suction filter TF-400X180F-Y) every 50 working hours, and replace the filter element every 500 working hours; clean the impeller, valve plate, and brake disc every 800 working hours to remove sediment and impurities, ensuring smooth operation.

3. Lubrication Maintenance: Apply lubricating oil (No. 32 anti-wear hydraulic oil) to transmission parts (cardan shaft, cross head, gear pumps) every 200 working hours, and apply grease to bushings, pulleys, and bearings every 300 working hours to reduce friction and wear, extending the service life of the parts.

4. Storage Requirements: Unused spare parts should be stored in a dry, ventilated, and clean warehouse, avoiding direct sunlight, rain, and contact with corrosive substances; the storage temperature should be controlled between -10℃ and 40℃, and the relative humidity should not exceed 75%; for sealing parts and O-rings, store them in sealed packaging to avoid aging; for high-voltage electrical parts, keep them away from moisture and dust.

5. Installation & Fault Handling: When installing the parts, ensure that the connection is tight, and the torque meets the standard (refer to the original equipment manual); for hydraulic and pneumatic parts, check for air leakage before operation; for high-voltage electrical parts, ensure correct wiring and grounding. If the parts fail during use, stop the equipment immediately, check the cause of the fault according to the maintenance manual, and do not force the equipment to operate to avoid secondary damage.

We supply the following spare parts:

On-Site Fault Maintenance Cases

We have accumulated rich on-site maintenance experience in long-term cooperation with oilfield, BOP, and industrial equipment enterprises. The following 3 real on-site fault maintenance cases provide practical reference for users to solve similar technical problems and ensure rapid equipment recovery:

Case 1: ZJ70LD Drilling Rig Cardan Shaft Failure

Fault Phenomenon: During the operation of the ZJ70LD drilling rig, the isokinetic ball cage cardan shaft (BOX365 F500) made abnormal noise, and the power transmission was unstable, leading to reduced drilling efficiency.

Fault Cause: The cardan shaft’s ball cage was worn after 6000 working hours of use, and the lubrication was insufficient, leading to friction and abnormal noise.

Maintenance Solution: Replace the cardan shaft with our ZJ70LD BOX365 F500 spare part, apply special lubricating grease, and test the power transmission. After replacement, the abnormal noise disappears, the power transmission is stable, and the drilling rig operates normally.

Case 2: FKQ6406E BOP Control System Leakage

Fault Phenomenon: The FKQ6406E surface BOP control system had oil leakage, resulting in insufficient pressure and inability to control the BOP normally, posing a well control risk.

Fault Cause: The sealing parts in the BOP control kit were aged and damaged, leading to oil leakage.

Maintenance Solution: Replace the sealing parts with our FKQ6406E surface BOP control kit repair kit, clean the hydraulic pipeline, and test the pressure. After replacement, there is no oil leakage, the system pressure is stable at 64MPa, and the BOP operates normally.

Case 3: ZJ50DB Drilling Rig Brake Failure

Fault Phenomenon: The ZJ50DB drilling rig’s brake system failed during hoisting operations, the brake pads (BK-1-6A) slipped, and the drill string could not be fixed, posing a safety hazard.

Fault Cause: The brake pads were severely worn (wear thickness exceeding 4mm), and the friction coefficient decreased, leading to insufficient braking force.

Maintenance Solution: Replace the brake pads with our BK-1-6A spare part, adjust the brake clearance, and test the braking performance. After replacement, the braking torque reaches 15000N·m, the brake locks firmly, and the safety hazard is eliminated.

FAQ (Frequently Asked Questions)

Conclusion & Procurement Guide

We are committed to providing high-quality, reliable, and cost-effective spare parts for oil drilling rigs, mud pumps, BOP systems, and supporting equipment, covering core models such as ZJ50DB, ZJ70, ZJ70LD, FKQ6406E, and key parts such as Dellner 5601000070 brake friction disc, 36001-0519A mud pump piston rod, and WESTCODE N540CH18L00 thyristor. All products have passed strict quality inspection, with authoritative certification, stable performance, and perfect compatibility, which can effectively solve the pain points of frequent equipment failures, high maintenance costs, and poor replacement adaptability that users face.

Our products not only meet the procurement standards of users (such as material qualification, performance parameters, and compatibility), but also provide professional technical support and maintenance guidance, serving as a reliable partner for your equipment operation and maintenance. We adhere to the principle of "quality first, customer-oriented", and provide users with high-quality products and thoughtful services to help users reduce operational risks and improve economic benefits.

If you are in need of oil drilling rig spare parts, BOP system accessories, mud pump parts, or other related products (such as ZJ70 working pliers assembly DBS75-3-00, FKQ6406E BOP repair kit, 36001-0519A piston rod, Dellner brake friction disc, etc.), please contact us to learn more about product details, pricing, and supply solutions. We can provide customized product supply services according to your specific equipment models and usage needs, ensuring that you can obtain the most suitable spare parts to support the stable operation of your equipment.

contact us ：

Emeil: [email protected]   whatsapp: +86 15275658619

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