ZJ30DB, ZJ40, ZJ50, ZJ70D, DQ70BSD Supply

Introduction

We focus on the production and supply of high-precision, wear-resistant spare parts for oil drilling rigs, hydraulic slurry pumps, cranes, top drives, and supporting hydraulic, pneumatic, electrical, and transmission equipment. Our product range fully covers core equipment models including ZJ30DB, ZJ40, ZJ45, ZJ50, ZJ50/3150DZ, ZJ50JC50D, ZJ70D, DQ70, DQ70BS, DQ70BSD, DQ250Z Top Drive, VOLVO TAD1641, Hydraulic Slurry Pumps THY85B, and GE-MWD Inclinometers. Key components we supply include throatbushes (E4083U38), disc brake blocks (BK-1-6A, BK-1-6C), safety gear cylinder assemblies (ZJ-40 PSZ65, PSZ75B-2-07.5), clamp tooth platens (DQ70 5-1/2″ 1.03.11.004), API-7 full open valves (SWND-7V1), top drive brake pads (DQ250Z 1200419584), and water pump repair kits (6V9895/1282922). All products are manufactured in strict compliance with API 7K, API 16A, ISO 9001, 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, top drive operators, crane and pump operation enterprises, and industrial equipment repair service providers, we accurately match the segmented needs of different users: For drilling rig operation teams, we provide high-pressure, wear-resistant core components (such as ZJ-40 safety gear cylinders, ZJ50 brake lever assemblies, and DQ70 clamp tooth platens) to ensure safe, efficient drilling operations and reduce non-productive downtime; for top drive and crane operators, we supply high-friction, high-load-bearing brake parts (DQ250Z brake pads, ZJ50/3150DZ brake shoe assemblies) to maintain stable braking performance and operational safety; for hydraulic and pump maintenance teams, we offer modular repair kits (water pump repair kit 6V9895/1282922) and sealing parts (DSC078HS1 seal, Piston seal AH1001010515B1) to simplify maintenance processes and reduce labor costs; for electrical teams, we provide durable rubber sheathed power cables (YCW 3*16+2*10mm2) that meet safety standards, ensuring stable power transmission. 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 14 major categories and more than 90 core models, fully meeting the maintenance, replacement, and upgrade needs of oil drilling rigs, top drives, cranes, hydraulic slurry pumps, 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:

• Brake System Parts: Disc brake block (BK-1-6A, BK-1-6C), friction disc (W24-07-900), ZJ50/3150DZ drilling rig brake shoe assembly (φ700/115.31.20.00), ZJ-45J one-way clutch brake shoe assembly (LT1170*250T), top drive (DQ250Z) braking pad-2 (1200419584), brake lever (ZJ50 JC50D)

• Hydraulic & Pneumatic Parts: Safety gear cylinder assembly (ZJ-40 PSZ65, PSZ75B-2-07.5), two-position three-way knob valve (QF-6 4900300024), three-position four-way manual reversing valve (4900350091), working pliers (PSZ75A-3-00), driller valve (ZJ30DB SZF-00), full open valve with insert API-7 (SWND-7V1), extended tee (Y/J0014), test hose assy (15000 PSI X 50FT LONG), hydraulic line (DQ70BS 50H0458 M181400)

• Sealing & Wear Parts: Throatbush (E4083U38), DSC078HS1 seal, O-ring (165X7 5300100519), front seal (RJ11148.09.13.02), piston seal (AH1001010515B1), piston wear ring (6020101J09), GE-MWD inclinometer double male connector inner end sealing ring (981508)

• Transmission & Shaft Parts: Whole vehicle thrust bearing, whole car copper pad copper sleeve (6883005), bearing (450102090745), axis (P2400634AA), intermediate shaft (P2400030AA), low speed hub (ZJ70D 106.33.20.06), drive ring (515869)

• Drilling Rig & Top Drive Parts: Clamp tooth platen (DQ70 5-1/2″ 1.03.11.004), working pliers (PSZ75A-3-00), top drive (DQ250Z) braking pad-2 (1200419584)

• Pump & Slurry Pump Parts: Hydraulic Slurry Pumps THY85B, water pump repair kit (6V9895/1282922), volute lining (G8110A05A, F6110A05A), valve guide (2604856), valve body (AH000002030100), plunger fixing bolt (B600-02090003)

• Crane & Hoisting Parts: Crane ZJ50/3150DZ drilling rig brake shoe assembly (φ700/115.31.20.00)

• Filter & Separator Parts: Filter assembly (AH100101190200), water separator (ZJ45)

• Fasteners & Structural Parts: Lock spring (AH1301010407), gland (AH000002010204), lower guide plate (AH0801010408), slide plate (3806288304), external retainer ring (CS33001-0205), cover plate (DQ70BSD 9702022101), screw (4400200454), eight cylinder (P55557-3) set ball (145657)

• Electrical Parts: Rubber sheathed power cable (YCW 3*16+2*10mm2 045/075kV), shift servo (S-SB7-27A)

• Instrument & Gauge Parts: VOLVO TAD1641 oil pressure gauge (849849)

• Faucet & Flushing Parts: Faucet flushing pipe (SL-170), faucet SL125 flushing pipe assembly (RI40391132-04)

• Connectors & Handles: Quick connector (universal PSZ-H4), universal handle (IDM JOY1000560-00)

• Inclinometer Parts: GE-MWD double male connector inner end sealing ring (981508)

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:

• Brake System Parts: The BK-1-6A/BK-1-6C disc brake blocks have a friction coefficient of 0.48-0.58, heat resistance up to 320℃, and service life of more than 2300 working hours, ensuring reliable braking of ZJ series drilling rigs; the DQ250Z top drive braking pad-2 (1200419584) is designed for high-load top drive operations, with strong wear resistance and stable braking force, ensuring operational safety.

• Hydraulic & Pneumatic Parts: The ZJ-40 PSZ65/PSZ75B-2-07.5 safety gear cylinder assembly has a working pressure of 31.5MPa, stroke accuracy of ±0.5mm, and can quickly lock the drilling rig during emergencies, ensuring operational safety; the 15000 PSI X 50FT test hose assy has a maximum working pressure of 103.4MPa, high temperature resistance up to 120℃, and fatigue life of more than 100,000 times, suitable for high-pressure hydraulic system testing.

• Sealing & Wear Parts: The DSC078HS1 seal is made of fluorine rubber, with high temperature resistance up to 200℃ and oil resistance, ensuring tight sealing of hydraulic components without leakage; the GE-MWD 981508 sealing ring has a pressure resistance of 75MPa, suitable for MWD inclinometer downhole operations, preventing mud and water intrusion.

• Transmission & Shaft Parts: The 6883005 whole car copper sleeve is made of high-purity copper, with a wear resistance of more than 3500 working hours, ensuring flexible rotation of transmission components; the ZJ70D 106.33.20.06 low speed hub has a maximum load-bearing capacity of 5000kg, ensuring stable power transmission in ZJ70D drilling rigs.

• Pump & Slurry Pump Parts: The THY85B hydraulic slurry pump parts (including volute linings G8110A05A/F6110A05A) have a corrosion resistance grade of C4, suitable for transporting high-abrasion, high-corrosion slurry; the 6V9895/1282922 water pump repair kit includes all core wearing parts, restoring the water pump’s flow rate to 80m³/h and head to 45m.

• Electrical & Instrument Parts: The YCW 3*16+2*10mm2 rubber sheathed power cable has a voltage rating of 045/075kV, insulation resistance of ≥100MΩ, and is flame-retardant and waterproof, suitable for outdoor oilfield electrical connections; the VOLVO TAD1641 849849 oil pressure gauge has a measurement range of 0-1.6MPa, accuracy of ±1.5%, ensuring real-time monitoring of engine oil pressure.

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 blocks, friction discs, and copper sleeves are made of high-chromium alloy, wear-resistant steel, and high-purity copper; structural parts (shafts, glands, guide plates) are made of 40Cr, 20Mn2, and other high-quality alloy steels, after quenching, tempering, and other heat treatment processes, with a hardness of HRC 35-48, tensile strength ≥850MPa, and impact toughness ≥65J/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, piston seals, front seals) 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 45%, improving maintenance efficiency.

5. Modular & Universal Design: For core components such as water pump repair kits, filter assemblies, and sealing rings, a modular design is adopted, which is convenient for partial replacement and maintenance, reducing maintenance costs; some universal parts (such as quick connectors, O-rings) 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, top drive operation, crane hoisting, hydraulic slurry pump operation, 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 (ZJ30DB, ZJ40, ZJ45, ZJ50, ZJ50/3150DZ, ZJ50JC50D, ZJ70D, DQ70, DQ70BS, DQ70BSD): Suitable for onshore and offshore drilling operations, able to withstand high temperature (-40℃ ~ 150℃), high pressure (up to 103.4MPa), strong vibration (vibration frequency 10-50Hz), and dusty, salty, and humid environments.

• Top Drives & Cranes (DQ250Z Top Drive, ZJ50/3150DZ Crane): Applicable to oilfield top drive drilling and hoisting operations, able to adapt to high load, frequent start-stop, and high-wear working conditions, ensuring operational safety.

• Hydraulic Slurry Pumps & Water Pumps (THY85B Hydraulic Slurry Pump): Suitable for oilfield mud circulation and water supply operations, able to adapt to high-abrasion, high-corrosion working environments.

• Inclinometers & Electrical Systems (GE-MWD Inclinometer, VOLVO TAD1641): Inclinometer parts are suitable for downhole measurement in oil and gas wells (75MPa pressure environment); electrical parts are suitable for flammable and explosive oilfield electrical systems, ensuring stable power transmission.

• Other Fields: Universal connectors, handles, and fasteners are suitable for various oilfield and industrial equipment assembly and maintenance scenarios, adapting to harsh outdoor and indoor working conditions.

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 brake components (brake blocks, friction discs, brake shoes), hydraulic valves, sealing parts, and transmission shafts, 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 pump parts, volute linings, and inclinometer seals, check for wear and damage every 200 working hours.

2. Cleaning & Replacement: Clean the surface of filters (filter assembly AH100101190200) and water separators (ZJ45) every 50 working hours, and replace the filter element every 500 working hours; clean the brake disc, plunger, and valve body 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 (intermediate shaft, low speed hub, bearings) every 200 working hours, and apply grease to copper sleeves, guide plates, and slide plates 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 electrical cables and instruments, 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 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, top drive, 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: ZJ40 Drilling Rig Safety Gear Cylinder Failure

Fault Phenomenon: During the operation of the ZJ40 drilling rig, the PSZ65 safety gear cylinder assembly failed to lock, leading to unstable drilling rig operation and posing a safety hazard.

Fault Cause: The cylinder’s internal seal was damaged after 5500 working hours of use, leading to hydraulic oil leakage and insufficient pressure to drive the locking mechanism.

Maintenance Solution: Replace the safety gear cylinder assembly with our ZJ-40 PSZ65 spare part, debug the hydraulic system, and test the locking performance. After replacement, the cylinder locks quickly and stably, and the drilling rig operates normally.

Case 2: DQ250Z Top Drive Brake Failure

Fault Phenomenon: The DQ250Z top drive’s braking pad-2 (1200419584) slipped during operation, resulting in insufficient braking force and inability to control the drill string, affecting drilling efficiency.

Fault Cause: The brake pad was severely worn (wear thickness exceeding 4.5mm), and the friction coefficient decreased, leading to slipping.

Maintenance Solution: Replace the brake pad with our 1200419584 spare part, adjust the brake clearance, and test the braking performance. After replacement, the braking torque reaches 16000N·m, the brake locks firmly, and the top drive operates normally.

Case 3: THY85B Hydraulic Slurry Pump Leakage

Fault Phenomenon: The THY85B hydraulic slurry pump had slurry leakage from the volute, resulting in reduced pump efficiency and environmental pollution.

Fault Cause: The volute lining (G8110A05A) was worn after 4000 working hours of use, and the sealing gap increased, leading to slurry leakage.

Maintenance Solution: Replace the volute lining with our G8110A05A spare part, check and adjust the pump clearance, and test the pump operation. After replacement, there is no slurry leakage, the pump efficiency is restored to 95%, and the pump operates normally.

FAQ (Frequently Asked Questions)

Conclusion & Procurement Guide

We are committed to providing high-quality, reliable, and cost-effective spare parts for oil drilling rigs, top drives, cranes, hydraulic slurry pumps, and supporting equipment, covering core models such as ZJ30DB, ZJ40, ZJ50, ZJ70D, DQ70BSD, and key parts such as BK-1-6A disc brake block, ZJ-40 PSZ65 safety gear cylinder, DQ250Z 1200419584 brake pad, and SWND-7V1 API-7 valve. 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, top drive accessories, crane brake parts, or other related products (such as ZJ50 brake lever, THY85B volute lining, GE-MWD 981508 sealing ring, 6V9895 water pump repair kit, 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.