PDC Drill Bit 3112mm GP1935XL, Rexroth Valve R431006216, ZJ70 Hydraulic Station Accumulator Bottle N

Introduction

This document focuses on a full range of high-precision mechanical spare parts specifically engineered for drilling rigs (ZJ30, ZJ45, ZJ50D28, ZJ70D, ZJ70L, ZJ70, Top Drive DQ250Z) and auxiliary industrial equipment. Covering key components such as PDC drill bit 3112mm GP1935XL, Rexroth valve R431006216/P63348-0/7P, ZJ70 hydraulic station accumulator bottle NXQ1-F6.3/20-H, and electromagnetic eddy current brake ZJ-30, our products are designed to address the core pain points of target users in oil and gas drilling, heavy-duty machinery operation, and equipment maintenance.

Target users include oilfield drilling companies, drilling rig maintenance teams, industrial equipment procurement departments, and machinery service providers. We precisely match three core segmented needs: 1) High-compatibility spare parts for quick replacement of worn components, minimizing unplanned equipment downtime; 2) High-pressure, high-temperature resistant parts that adapt to harsh drilling environments (such as offshore and desert drilling); 3) Cost-effective, long-service-life components that reduce replacement frequency and overall operational costs. All products comply with international industrial standards (ISO 9001:2015 quality management system, API Spec 7K for drilling equipment) and are manufactured using precision CNC machining technology, ensuring a dimensional tolerance of ±0.015mm and a service life 20% longer than industry averages.

Core Purpose

The core purpose of our mechanical spare parts is to provide a one-stop, reliable solution for drilling rigs and industrial equipment, ensuring continuous, safe, and efficient operation. Each component—from small sealing parts (O-RING MAIN SHAFT 5303100560, Sealing pad 520902551280120100) to large core assemblies (PDC drill bit 3112mm GP1935XL, Balancing device cylinder 1300127451)—is 100% compatible with original equipment specifications, eliminating compatibility issues that often lead to equipment failure and costly repairs. For example, the ZJ70 hydraulic station accumulator bottle NXQ1-F6.3/20-H is designed to withstand a maximum working pressure of 20MPa and has a volume of 6.3L, ensuring stable hydraulic system pressure in ZJ70 drilling rigs; the PDC drill bit 3112mm GP1935XL features a diamond-impregnated cutting structure, with a drilling efficiency 35% higher than traditional drill bits. By providing such high-performance parts, we help users reduce unplanned downtime by 35%, lower maintenance costs by 28%, and improve overall equipment operational efficiency by 25%.

Product Introduction

Key Product Categories & Core Models

Our product portfolio covers 7 major categories, perfectly matching ZJ30, ZJ45, ZJ50, ZJ70 series drilling rigs and Top Drive DQ250Z equipment, with more than 50 core models to meet diverse operational needs:

• Drilling Core Components: PDC drill bit 3112mm GP1935XL, Turntable ZJ70L Turntable roller square bushing roller (275) 3 1/2″, Balancing device cylinder 1300127451 (for Top drive DQ250Z, HONGHUA)

• Valves & Hydraulic Components: Rexroth valve R431006216/P63348-0/7P, Turntable combination valve HE-2-FX/P051612/IA285, ZJ70 hydraulic station accumulator bottle NXQ1-F6.3/20-H, check valve 4900300013

• Brake Systems: Electromagnetic eddy current brake ZJ-30, Emergency brake valve ZJ70D DBAD-IAD-CD-VALVE, Disc brake ZJ70 BA seal ring PSZ75-2-25.4, Winch brake operating mechanism ZJ50D28

• Sealing Parts: O-RING MAIN SHAFT 5303100560 (Size: 230 X 7), Seal spacer T77304, Sealing pad 520902551280120100, Disc brake high pressure hose assembly PSZ75B A8II-1300

• Filters & Separators: Water separator 133-5673, Fuel filter BF7587, Oil filter hose assembly DQ70BSD 9722122103

• Mechanical Transmission Parts: Herringbone pin 9014762, Valve push rod 4W6682, Stud bolt T53-4007, Clutch torsion bar LT965*305T, 3 1/2inch plunger P2300143AA

• Electrical & Instrumentation Parts: Explosion-proof pressure sensor 380210100540000000, Inclinometer LHE-3201, Rechargeable battery cartridge LHE1212 7.2V, Weight table SK-2Z11 power board PC01, Straight-through aviation plug connector BX3-200-3P+E-200A-380V

All products are made of high-quality raw materials—such as high-strength alloy steel for PDC drill bits, nitrile rubber for O-rings, and corrosion-resistant stainless steel for hydraulic hoses—to ensure excellent performance in harsh working environments. Each part undergoes 4 strict quality inspection procedures (raw material inspection, machining precision inspection, pressure resistance testing, and fatigue testing) before leaving the factory, with a qualified rate of 99.9%.

Function Description

Core Functions of Key Products

Each component is designed to perform specific, critical functions for equipment operation, focusing on stability, efficiency, and safety, and directly addressing user pain points:

• PDC Drill Bit 3112mm GP1935XL: Used for drilling in oil and gas formations, featuring a diamond cutting structure that reduces wear and improves drilling speed. It can drill through hard formations (Rockwell hardness up to HRC 35) with a service life of 120 drilling hours, 35% longer than traditional carbide drill bits.

• Rexroth Valve R431006216/P63348-0/7P: Controls the flow and pressure of the hydraulic system in drilling rigs, with a response time of 0.05 seconds, ensuring precise control of hydraulic components (such as winches and drill strings). It has a maximum working pressure of 31.5MPa and is compatible with ZJ70 series drilling rigs.

• ZJ70 Hydraulic Station Accumulator Bottle NXQ1-F6.3/20-H: Stores hydraulic energy, stabilizes system pressure, and compensates for pressure fluctuations. It has a volume of 6.3L, a maximum working pressure of 20MPa, and effectively reduces the number of starts and stops of the hydraulic pump, extending the pump's service life by 30%.

• Electromagnetic Eddy Current Brake ZJ-30: Provides stable braking force for ZJ-30 drilling rigs, with a maximum braking torque of 8000N·m. It adopts an eddy current braking principle, which has no mechanical wear and low maintenance costs, ensuring safe operation of the drill string during drilling.

• Fuel Filter BF7587: Filters impurities (such as metal particles and sediment) in the fuel, with a filtration precision of 5μm, protecting the engine and fuel injection system from wear, and reducing engine failure rate by 25%.

Structural Features

Design Advantages of Core Components

Our products adopt advanced structural design to enhance performance, durability, and compatibility, addressing the pain points of easy wear, poor sealing, and short service life of ordinary parts:

• Drilling Components: The PDC drill bit 3112mm GP1935XL adopts a multi-tooth distribution structure, which evenly distributes drilling pressure and reduces single-tooth wear. The turntable roller square bushing roller (275) 3 1/2″ uses a high-precision rolling bearing structure, reducing friction coefficient by 40% compared with sliding bushings.

• Valves & Hydraulic Components: The Rexroth valve R431006216 adopts a spool valve structure with a hard chrome-plated surface (thickness 0.08mm), improving wear resistance and corrosion resistance. The ZJ70 hydraulic station accumulator bottle uses a seamless steel cylinder body, with a safety factor of 4.0, ensuring safe operation under high pressure.

• Sealing Parts: The O-RING MAIN SHAFT 5303100560 (230 X 7) adopts a high-temperature resistant nitrile rubber material, which can work normally at -40℃ to 120℃, and has a sealing performance of Class VI (zero leakage). The disc brake high pressure hose assembly PSZ75B A8II-1300 uses a multi-layer braided structure, with a burst pressure of 60MPa, 3 times the maximum working pressure.

• Brake Components: The electromagnetic eddy current brake ZJ-30 adopts a water-cooled structure, with a heat dissipation coefficient of 0.6 W/(m·K), avoiding brake fade caused by high temperature during long-term braking.

Applicable Working Conditions

Our mechanical spare parts are designed to adapt to a variety of harsh industrial and drilling working conditions, with strong environmental adaptability and wide applicability, directly matching the working scenarios of target users:

• Onshore & Offshore Drilling Sites: Suitable for ZJ30, ZJ45, ZJ70 series drilling rigs and Top Drive DQ250Z, able to withstand high temperature (temperature range: -45℃ to 130℃), high pressure (up to 35MPa), high humidity, and salty environments. Key products include PDC drill bit 3112mm GP1935XL, Rexroth valve R431006216, and balancing device cylinder 1300127451.

• Desert & High-Altitude Drilling: Adapt to dry, dusty, and low-oxygen environments (altitude ≤ 5000m). The emergency brake valve ZJ70D DBAD-IAD-CD-VALVE and electromagnetic eddy current brake ZJ-30 can work normally in low-temperature and low-pressure environments, ensuring safe drilling.

• Industrial Equipment Maintenance: Suitable for quick replacement of worn parts in drilling rigs and auxiliary equipment, with high compatibility to ensure maintenance work can be completed efficiently (replacement time for key parts ≤ 1.5 hours). Key products include seal spacer T77304, herringbone pin 9014762, and retainer ring CS33001-0215.

• High-Load Continuous Operation: Applicable to equipment that operates 24 hours a day, such as ZJ50D28 winches and ZJ70 hydraulic stations. The clutch torsion bar LT965*305T and plunger P2300143AA are designed to withstand long-term heavy loads, with a fatigue life of 10^6 cycles.

Maintenance & Care Recommendations

Proper maintenance and care can extend the service life of mechanical spare parts, reduce maintenance costs, and ensure stable equipment operation. We provide professional recommendations based on industry best practices and product characteristics, serving as a technical reference for users:

• Regular Inspection: Conduct a comprehensive inspection of key components every 400 operating hours. For example, check the wear of the PDC drill bit 3112mm GP1935XL (replace when cutting tooth wear exceeds 3mm), inspect the sealing performance of the O-RING MAIN SHAFT 5303100560 (replace if there is oil leakage), and check the pressure of the ZJ70 hydraulic station accumulator bottle (maintain at 18-20MPa).

• Lubrication Maintenance: Apply appropriate lubricating oil to transmission components (such as herringbone pin 9014762 and turntable bushing) every 150 operating hours. Use lubricating oil that meets API GL-5 standard to ensure good lubrication and reduce wear.

• Storage Requirements: Store spare parts in a dry, ventilated, and clean warehouse, with a temperature of 0-25℃ and relative humidity ≤ 55%. Avoid direct sunlight and contact with corrosive substances (such as seawater and acid) to prevent rust and damage. For electrical parts (such as aviation plug connectors and pressure sensors), store them in sealed packaging to avoid moisture.

• Replacement Standards: Replace parts in accordance with service life and wear standards. For example, the service life of the fuel filter BF7587 is 150 operating hours, and it should be replaced in time to avoid fuel blockage; the service life of the Rexroth valve R431006216 is 8000 operating hours, and regular inspection and maintenance should be carried out to ensure its response speed.

We supply the following spare parts:

On-Site Fault Maintenance Cases

The following are 3 real on-site fault maintenance cases, providing practical technical references for users to solve similar problems and verifying the reliability of our products:

Case 1: ZJ70 Drilling Rig Hydraulic System Pressure Instability

Equipment Model: ZJ70 drilling rig hydraulic station
Fault Phenomenon: The hydraulic system pressure fluctuated greatly (15-22MPa), leading to unstable operation of the winch and drill string.
Fault Diagnosis: After inspection, the ZJ70 hydraulic station accumulator bottle NXQ1-F6.3/20-H had internal leakage, and the check valve 4900300013 was worn, leading to pressure loss.
Maintenance Solution: Replace the accumulator bottle with our NXQ1-F6.3/20-H and the check valve with 4900300013. After replacement, adjust the system pressure to 19MPa.
Result: The hydraulic system pressure stabilized, and the winch and drill string operated normally. No similar faults occurred within 8 months of use.

Case 2: PDC Drill Bit Drilling Efficiency Reduction

Equipment Model: ZJ70L drilling rig
Fault Phenomenon: The drilling speed of the PDC drill bit (original model) decreased by 40%, and the drill bit was severely worn after 60 drilling hours.
Fault Diagnosis: The original drill bit had poor wear resistance and could not adapt to hard formations (Rockwell hardness HRC 32).
Maintenance Solution: Replace the drill bit with our PDC drill bit 3112mm GP1935XL, which has a diamond-impregnated cutting structure and strong wear resistance.
Result: The drilling speed increased by 35%, and the drill bit service life extended to 120 drilling hours, reducing the number of drill bit replacements by half.

Case 3: ZJ-30 Drilling Rig Brake Failure

Equipment Model: ZJ-30 drilling rig
Fault Phenomenon: The electromagnetic eddy current brake failed, and the drill string could not be locked during drilling, leading to equipment shutdown.
Fault Diagnosis: The brake's internal coil was burned out, and the heat dissipation system was blocked, leading to overheating and failure.
Maintenance Solution: Replace the electromagnetic eddy current brake with our ZJ-30 model, clean the heat dissipation system, and check the circuit connection.
Result: The brake resumed normal operation, with a braking torque of 8000N·m, and the equipment returned to work within 2 hours. No similar faults occurred within 7 months.

FAQ (Frequently Asked Questions)

Procurement Guide & Technical Support

We provide a complete procurement solution to meet your needs for high-quality mechanical spare parts for drilling rigs and industrial equipment. All products are supplied with detailed technical parameters, quality inspection reports, and maintenance manuals, serving as a clear procurement reference standard for you. Whether you need small spare parts (such as herringbone pin 9014762, O-RING 5303100560) or large core assemblies (such as PDC drill bit 3112mm GP1935XL, Rexroth valve R431006216), we can provide a one-stop supply service to meet your batch procurement or emergency replacement needs.

Our professional technical team provides 24/7 technical support, including product selection, on-site fault diagnosis, and maintenance guidance, serving as a reliable technical reference for you to solve equipment problems. We adhere to the principle of "quality first, customer-oriented", and all products are manufactured in strict accordance with international standards to ensure stable performance and long service life.

If you need to purchase any of the above products (including PDC drill bit 3112mm GP1935XL, Rexroth valve R431006216, ZJ70 hydraulic station accumulator bottle NXQ1-F6.3/20-H, and other models), please contact us to provide your equipment model and required part number. We will provide you with a competitive quotation and high-quality products that meet your operational needs, helping you reduce operational costs and improve equipment efficiency.

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