Cage ZJ50 AQL.07.06, PDC Drill Bit 1524mm ST316TUH, Rexroth Valve R431004176

Introduction

Oilfield drilling, well completion, and continuous operational efficiency rely heavily on the compatibility, durability, and precision of every component—from mechanical cages and drill bits to hydraulic valves and electrical contactors. Unplanned downtime caused by mismatched, low-quality parts can cost oilfield operators up to $12,000 per hour, disrupting project timelines and increasing operational costs. This document focuses on a comprehensive range of industry-compliant oilfield equipment parts, including core products such as Cage ZJ50 AQL.07.06, PDC Drill Bit 1524mm ST316TUH, Rexroth Valve R431004176/P57564-1/7R-7S, and matching components for ZJ-30C, ZJ40, ZJ50, ZJ50D, ZJ50L, ZJ70DB, ZJ90D series drilling rigs. We directly address the core needs of oilfield procurement teams, maintenance engineers, and drilling operators—who require parts that fit perfectly, withstand extreme oilfield conditions, and reduce long-term maintenance costs—by delivering solutions that meet strict international standards and on-site operational demands.

Our core purpose is to supply API (American Petroleum Institute) 7K, API 11D1, and ISO 9001 certified oilfield parts that seamlessly match ZJ-30C, ZJ40, ZJ50, ZJ50D, ZJ50L, ZJ70DB, ZJ90D drilling rigs, Eaton auxiliary brakes, Rexroth hydraulic systems, and WNS2-1.25-Y boilers. Each product undergoes 12 rigorous quality inspection procedures, including dimensional accuracy testing (±0.01mm tolerance), high-pressure resistance testing (up to 200MPa), corrosion resistance testing (72-hour salt spray test), and wear resistance testing (0.01mm/1000 hours), ensuring a failure rate of less than 0.2% in long-term, continuous operation. By choosing our parts, users can reduce maintenance frequency by 45%, extend equipment service life by 35%, and lower overall operational costs by 28%—delivering tangible, measurable value for oilfield operations of all scales.

Product Overview

Core Product Series

We offer a full spectrum of oilfield equipment parts covering mechanical components, drilling tools, hydraulic valves, electrical parts, filtration systems, and auxiliary accessories. All products are engineered to match specific ZJ series drilling rig models and auxiliary equipment, with key product models including but not limited to:

• Mechanical Components & Fasteners: Cage ZJ50 AQL.07.06, Base Pin ZJ50D F01.05 110×660, Frame Bushing EH3041MA05, Touring Car Hook DG450 Upper Bushing 103.04.07, Spacer T77206, Small Tie Rod B600-02000124, Push Ring F029HS1A05, Strut ZJ40 BK-9-6C

• Drilling Tools: PDC Drill Bit 1524mm ST316TUH

• Hydraulic Valves & Pumps: High Pressure Control Valve Manual Plate Valve PFF65 105MPa, R431004176/P57564-1/7R-7S Rexroth Valve, Turntable Combination Valve P51612, Drum Shaft ZJ-30C Brake Accelerator Valve CQ3030Y-3518010/500, Hydraulic Pump 512605040000117000, Pressure Relief Valve P/N 5126000600, Overflow Valve 4900350043, 1040-A(3/8″)/IV-184 Needle Throttle Valve

• Brake & Clutch Components: 336WCB2 Eaton Auxiliary Brake Compression Disc Assembly 513985-03, Winch Brake Operating Mechanism XJ650 Transmission Shaft Fixing Seat E650-32001002, Friction Disc W14-07-902, Brake Device ZJ70DB Safety Gear Disc Spring PSZ75A-2-06.03, Brake Device ZJ50L Open Cylinder Bearing KG-31, Clutch ATD324 146602A, Brake Device ZJ-30C Nut QBJ2031810, Brake Pads ZJ90D ZP375

• Electrical Parts & Instruments: Contactor 330103015601805000, Liquid Level Alarm LKZN-Ⅳ, Liquid Level Thermometer ZJ50 YWZ-300T, TDQ(450DBZ) Cable-TD*AUX-E014-20-200-04-25-B

• Bearings: Bearing 4500100324, Bearing 450102120796, Input Shaft Bearing 430110010304000047, Special Bearing for Top Drive DQ70BSD 4301000830

• Connectors & Fittings: Plug-in G8041M-A05A, F6041HS1A05, Imperial Elbow 520207050400250065, Inner Connector 520203080300080072, Connector 520901140607030000, Quick Coupler ZJ70D DQ70BSC FF-752-12FB G3/4

• Filtration Parts: Filter Element 131-8821

• Sealing & Gaskets: Gasket X20-27-001, Gasket AH1301010305, Gasket AG375001, LMD O-Ring AS-218 Viton 981508 GE, Oil Deflector Ring ZLYQC850-94A-309

• Auxiliary Equipment & Repair Kits: B1313 Cover Plate, Gate Assembly F751.14.04.09.00, Engine Repair Kit 8T-6484, Cylinder Liner 5I7563, Nitrogen Backup System FKB15/8-1, Boiler WNS2-1.25-Y Double Flange Gate Valve DN65-16-HT200, Belt 4W0752

Function Description

Key Product Functions

Each product is designed to fulfill specific operational roles, with core functions focused on enhancing safety, efficiency, and stability—directly addressing the practical needs of oilfield on-site operations and resolving common pain points such as mismatched parts, frequent failures, and costly downtime:

• Mechanical Components (ZJ50 AQL.07.06 Cage, EH3041MA05 Frame Bushing): Provide stable support and structural integrity for drilling rig components. The cage ZJ50 AQL.07.06 withstands radial loads up to 400kN, while the frame bushing reduces friction by 40% with a wear rate of 0.01mm/1000 hours, ensuring smooth operation of moving parts.

• PDC Drill Bit 1524mm ST316TUH: Delivers high drilling efficiency in diverse geological formations (sandstone, shale, hard rock) with a penetration rate of 8-12 meters per hour—30% higher than traditional roller bits. The bit features a diamond-enhanced cutting surface, extending its service life to 1500+ drilling meters.

• Hydraulic Valves & Pumps (Rexroth Valve R431004176, PFF65 105MPa Control Valve): Regulate hydraulic oil flow and pressure with precise control (accuracy ±0.1MPa). The Rexroth valve ensures smooth hydraulic system operation with a response time of ≤0.05 seconds, while the PFF65 manual plate valve withstands pressures up to 105MPa, suitable for high-pressure drilling operations.

• Brake & Clutch Components (Eaton 513985-03 Compression Disc, ZJ90D ZP375 Brake Pads): Ensure safe and reliable braking for drilling rigs. The Eaton compression disc assembly provides a friction coefficient of 0.48, delivering braking force up to 150kN, while the ZP375 brake pads have a service life of 900+ operating hours.

• Electrical Parts (330103015601805000 Contactor, LKZN-Ⅳ Liquid Level Alarm): Control and monitor electrical systems and equipment status. The contactor handles currents up to 100A and voltages up to 600V, with a service life of 120,000+ cycles, while the liquid level alarm provides real-time alerts for low/high fluid levels, reducing equipment damage risks by 50%.

• Sealing & Gaskets (981508 Viton O-Ring, AG375001 Gasket): Prevent leakage of hydraulic oil, fuel, and drilling fluid, maintaining system pressure integrity. The Viton O-ring withstands temperatures up to 200°C and pressures up to 180MPa, ensuring a sealing life of 10-12 months, while gaskets provide a tight seal with a compression rate of 15-20%.

Structural Features

Design Advantages

All products adopt industry-proven structural designs, combining durability, compatibility, and ease of maintenance—engineered to withstand the harsh conditions of oilfield operations while meeting the highest quality standards and reducing on-site maintenance burden:

• High-Strength Material Selection: Mechanical parts (cages, bushings, tie rods) are made of 42CrMo alloy steel,经过 quenching and tempering treatment to achieve a hardness of HRC 42-47, ensuring exceptional wear resistance and load-bearing capacity. Fasteners and nuts are made of 12.9 grade high-strength steel, with a tensile strength of 1220MPa and yield strength of 1040MPa.

• Precision Machining: Hydraulic valves, bearings, and connectors are manufactured using CNC precision machining, with dimensional accuracy of ±0.01mm, ensuring perfect compatibility with original ZJ series drilling rig parts. This reduces assembly time by 35% and eliminates fitment issues that often lead to costly downtime.

• Sealing & Corrosion Resistance: Sealing elements (Viton O-rings, gaskets) use high-performance materials with excellent oil resistance, temperature resistance, and chemical resistance. All metal parts undergo chrome plating or hot-dip galvanizing treatment, passing 72-hour salt spray tests with no corrosion or rust, making them suitable for offshore and coastal oilfields.

• Safety & Reliability Design: Brake components (PSZ75A-2-06.03 disc spring, ZP375 brake pads) and safety systems (FKB15/8-1 nitrogen backup system) meet API 7K safety standards, with overload protection and emergency response functions. Electrical parts have IP66 protection rating, preventing dust and water ingress in outdoor oilfield environments.

• Maintenance-Friendly Design: Quick couplers (FF-752-12FB G3/4), plug-ins (G8041M-A05A), and easy-to-replace filter elements (131-8821) enable on-site maintenance without specialized tools, reducing maintenance time by 50%. Clear part markings and compatibility labels ensure quick identification and replacement.

Applicable Working Conditions

Our oilfield equipment parts are widely suitable for various oilfield operation scenarios, perfectly matching ZJ-30C, ZJ40, ZJ50, ZJ50D, ZJ50L, ZJ70DB, ZJ90D drilling rigs, and adapting to the following harsh working conditions:

• Onshore & Offshore Drilling Rigs: Compatible with ZJ-30C, ZJ40, ZJ50, ZJ50D, ZJ50L, ZJ70DB, ZJ90D series drilling rigs, supporting shallow (≤1500m), medium (1500-3000m), and deep (≥3000m) well drilling operations in diverse geological formations (sandstone, shale, hard rock, and carbonate rock).

• High-Temperature & High-Pressure (HTHP) Environments: Hydraulic valves (PFF65 105MPa), sealing elements (981508 Viton O-ring), and brake components can operate stably at temperatures up to 200°C and pressures up to 200MPa, meeting the requirements of HTHP well operations (API 11D1 standard) and offshore drilling conditions.

• Corrosive & High-Humidity Scenarios: Anti-corrosion treated parts (cages, bushings, connectors) resist corrosion from drilling fluid, seawater, and saline-alkali, with a service life 40% longer than ordinary parts in offshore and coastal oilfields.

• Heavy-Load & High-Vibration Operations: Mechanical parts (base pins, struts, bearings) withstand continuous heavy loads (up to 650kN) and strong vibration (≤25g), ensuring stable operation during drilling, lifting, and pipe handling.

• Extreme Temperature Environments: Parts such as liquid level thermometers (YWZ-300T) and O-rings adapt to extreme temperatures from -45°C to 200°C, ensuring reliable performance in cold winter and hot summer oilfield operations.

Maintenance & Care Suggestions

Proper maintenance and care are critical to extending the service life of oilfield equipment parts, reducing failure rates, and optimizing operational efficiency. Below are practical, on-site-friendly maintenance recommendations based on industry best practices and our product specifications:

• Regular Inspection: Conduct weekly visual checks of key parts (cages, brake pads, seals) to detect wear, deformation, or leakage. For valves (Rexroth R431004176) and contactors (330103015601805000), test performance monthly to ensure precision and reliability (±0.1MPa for valves, 100A current capacity for contactors).

• Drill Bit Maintenance: Inspect PDC Drill Bit 1524mm ST316TUH after each drilling shift; clean the cutting surface to remove rock debris and check for damaged diamond inserts. Replace the bit when wear exceeds 0.5mm on the cutting edge.

• Hydraulic System Maintenance: Replace filter element 131-8821 every 600 operating hours or 4 months. Inspect hydraulic valves (PFF65, 4900350043) for leaks monthly; apply lithium-based lubricating grease (NLGI 2) to valve stems to ensure smooth operation. Ensure hydraulic oil meets ISO VG 46 standards.

• Brake & Bearing Maintenance: Check ZJ90D ZP375 brake pads for wear every 800 operating hours; replace if thickness is less than 7mm. Lubricate bearings (4500100324, 4301000830) every 25 days with high-temperature grease to reduce friction and extend service life.

• Sealing & Electrical Maintenance: Replace Viton O-ring 981508 and gaskets (AG375001) at the first sign of aging or leakage. Inspect electrical cables (TDQ(450DBZ)) for cracks or damage; replace if the outer sheath is broken. Calibrate liquid level alarms (LKZN-Ⅳ) quarterly to ensure accurate alerts.

We supply the following spare parts:

On-Site Fault Maintenance Cases

The following 3 real on-site fault cases provide practical guidance for solving common oilfield equipment problems, helping maintenance teams quickly diagnose and resolve issues, and minimizing downtime (average resolution time ≤1.2 hours):

Case 1: ZJ50 Drilling Rig Hydraulic Valve Malfunction

Fault Phenomenon: A ZJ50 drilling rig’s hydraulic system experiences unstable pressure (fluctuating between 80MPa and 100MPa), leading to erratic winch operation. Inspection shows the Rexroth Valve R431004176 is clogged with debris, affecting valve core movement.

Solution: Disassemble the Rexroth valve, clean the valve core and internal passage with high-pressure air, and reinstall it. Calibrate the valve to the standard pressure range (90-95MPa). After maintenance, the hydraulic pressure stabilizes, and the winch operates smoothly—resolving the issue in 1 hour.

Case 2: PDC Drill Bit Wear & Reduced Drilling Efficiency

Fault Phenomenon: A 1524mm ST316TUH PDC drill bit shows reduced drilling efficiency (penetration rate drops from 10m/h to 4m/h) after 1200 drilling meters. Inspection confirms the diamond inserts are worn and some are chipped.

Solution: Replace the worn drill bit with a new 1524mm ST316TUH model, adjust drilling parameters (rotational speed and weight on bit) to match the formation, and clean the drill string. After replacement, the drilling efficiency is restored to 10m/h—resolving the issue in 1.2 hours.

Case 3: ZJ70DB Drilling Rig Brake Failure

Fault Phenomenon: A ZJ70DB drilling rig’s brake system fails to provide sufficient braking force during lifting, posing safety risks. Inspection reveals the PSZ75A-2-06.03 disc spring is deformed, and the ZP375 brake pads are worn (thickness <6mm).

Solution: Replace the deformed disc spring and worn brake pads with new models, adjust the brake clearance to 0.4-0.8mm, and test the braking force (≥150kN). After maintenance, the brake operates stably—resolving the issue in 1.1 hours.

FAQ (Frequently Asked Questions)

Procurement Guide & Technical Support

We are dedicated to supplying high-quality, industry-certified oilfield equipment parts that meet the strict demands of drilling and production operations. All our products adhere to API 7K, API 11D1, and ISO 9001 standards, with 12 rigorous quality inspection procedures and a failure rate of less than 0.2%—ensuring reliable performance in the harshest oilfield environments. We provide detailed product specifications, material test reports, compatibility certificates, and maintenance guides for every part, giving you a clear procurement reference and comprehensive technical support for on-site operations.

Whether you need single parts (such as Cage ZJ50 AQL.07.06, PDC Drill Bit 1524mm ST316TUH, Rexroth Valve R431004176) or a full set of accessories for your ZJ series drilling rig, Rexroth hydraulic system, or auxiliary equipment, we can provide customized procurement solutions tailored to your specific operational needs. Our product range covers all models listed in this document, and we offer flexible supply options to meet your procurement volume and timeline requirements.

For procurement inquiries, technical consultation, or support with part selection and maintenance, please contact us directly. We will provide competitive pricing, detailed product information, and professional guidance to help you optimize your equipment performance, reduce maintenance costs, and ensure the smooth progress of your oilfield operations. Choose our oilfield parts to get reliable products, authoritative technical support, and a cost-effective procurement experience that drives your operational efficiency and success.

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