PDC Drill 311mm MS1951SS, Rexroth Valve R431009234/7P-9, Boiler WNS2-1.25-5Y Burner Fuel Nozzle BAL

Introduction

This document focuses on a full range of precision-manufactured spare parts specifically engineered for drilling rigs (ZJ-30C, ZJ-40, ZJ45, ZJ50, ZJ50L, DQ70BSD) and supporting industrial equipment (Boiler WNS2-1.25-Y, WNS2-1.25-5Y, Metso Pump, BOMCO F800/1000 Pump, V20F Steering System). Covering core components such as PDC Drill 311mm MS1951SS, Rexroth Valve R431009234/7P-9, Boiler WNS2-1.25-5Y Burner Fuel Nozzle BALTUR, and Brake Device ZJ50L Open Clamp Arm Assembly KB-00, our products are designed to solve the critical pain points of target users in oil and gas drilling, industrial equipment operation, and maintenance.

Our target users include oilfield drilling companies, drilling rig maintenance teams, industrial equipment procurement departments, and heavy machinery service providers. We precisely address three core segmented needs: 1) 100% compatible spare parts for quick replacement of worn or damaged components, minimizing unplanned equipment downtime and emergency repair costs; 2) High-pressure, high-temperature, and corrosion-resistant parts that ensure reliable operation in harsh drilling and industrial environments; 3) Cost-effective, long-service-life components that reduce replacement frequency and lower overall operational costs. All products comply with international industrial standards (ISO 9001:2015 quality management system, API Spec 7K for drilling equipment, MECC standards for fasteners) and are produced using precision CNC machining and advanced surface treatment technology, ensuring a dimensional tolerance of ±0.01mm and a service life 24% longer than industry averages.

Core Purpose

The core purpose of our spare parts is to provide a one-stop, reliable solution for drilling rigs and industrial equipment, ensuring continuous, safe, and efficient operation while reducing operational and maintenance costs. Each component—from small fasteners (Countersunk Screw ZJ BK-11-S2, Nut M10 MECC Standard) to large core assemblies (Supercharger Assembly 7C6648, B073M Slurry Pump Shaft, Valve Assembly BOMCO F800/1000 VALVE)—is designed to match original equipment specifications perfectly, eliminating compatibility issues that often lead to equipment failure, costly repairs, and project delays. For example, the PDC Drill 311mm MS1951SS features a diamond-impregnated cutting structure, with a drilling efficiency 40% higher than traditional drill bits and a service life of 150 drilling hours; the Rexroth Valve R431009234/7P-9 is engineered for ZJ series drilling rig hydraulic systems, with a maximum working pressure of 31.5MPa and a response time of 0.04 seconds. By providing such high-performance parts, we help users cut unplanned downtime by 42%, reduce maintenance costs by 33%, and improve overall equipment operational efficiency by 29%.

Product Introduction

Key Product Categories & Core Models

Our product portfolio covers 9 major categories, perfectly matching ZJ-30C, ZJ-40, ZJ45, ZJ50, ZJ50L, DQ70BSD drilling rigs and supporting industrial equipment, with more than 60 core models to meet diverse operational and maintenance needs:

• Drilling Core Components: PDC Drill 311mm MS1951SS, CROSSHEAD GUIDE (LOWER) 36001-0417, Intermediate Shaft (Z18Mn7-Z63Mn5 for TDS) 9702020220, B073M Slurry Pump Shaft, Metso Pump Expeller No.2-310461, DH2110 Volute Liner

• Brake Systems & Control Parts: Brake Device ZJ50L Open Clamp Arm Assembly KB-00, Brake Lever ZJ45 106.23.51.00, Brake Device ZJ-40 Manual Stop Valve LT07MAK-2X/100-02M, Clutch Air Tire WG06309651

• Valves & Hydraulic Components: Rexroth Valve R431009234/7P-9, Valve Assembly BOMCO F800/1000 VALVE, High Pressure Control Valve Orifice Type Manual Throttle Valve JLKK 78/105, Safety Valve 512704020000032018, “L” Hydraulic Circuit Hose Assy 9705220005, “P” Hydraulic Circuit Hose Assy 9705220003

• Filters & Filter Elements: Bypass Paper Filter ZUI-A400X40FZ, Line Filter SP-06X25, Filter Element FS1212, Piston Ring E4TZ-6148-A

• Transmission & Drive Parts: Shift Fork Assembly Z01030500001AA, Front Drive Shaft 5000700189, Compressor Drive Shaft ZJ-30C, Fan Belt 9L-6643DF/1100850013, 852GAKPX-F6X SPT0, V20F-1P13P-38C8H-22L Steering Oil Pump

• Fasteners & Seals: Countersunk Screw ZJ BK-11-S2, Bolt 420201043816035000, Nut M10 MECC Standard, Washer 420501036160200000, O-RING LOCATING 36001-0209, Seal Half Ring F751.14.04.05.02.00, Combination Washer 530402020001014000

• Electrical & Instrumentation Parts: High Voltage Electrical Equipment SCR Insurance Z301552 700VAC 600A, Shale Dilatometer Viscosity Coefficient Tester NZ-3A, Boiler WNS2-1.25-Y Solenoid Valve 483764T1 DZ14TI

• Industrial Equipment Parts: Boiler WNS2-1.25-5Y Burner Fuel Nozzle BALTUR, Supercharger Assembly 7C6648, Rear Repair Kit 8C4458, Faucet Flush Pipe SL-450, Impeller FAM8147A05A/F6147A05A

• Structural & Auxiliary Parts: Blocking Board BKD-6-6D, Bushing BKD-7-6D8, Lock Spring AH1001010411, Press Cap P1100331AA, FLANGE JC28/11D-06-20, 648408706 Gasket Cover, Tooth Board DQ70BSD 9705225404, Intermediate Rod AH360010411, Rubber Hose ZJ50 106.02.22.00 L=440, Disc Spring BG80B10, Fasten the Screw Nut PSZ75A-2-06.09

All products are crafted from high-quality raw materials—such as diamond-impregnated steel for PDC drill bits, high-strength alloy steel for pump shafts, nitrile rubber for O-rings, and corrosion-resistant stainless steel for valves—to ensure durability in harsh working conditions. Each part undergoes 4 rigorous quality inspection processes (raw material chemical composition testing, machining precision inspection, pressure resistance testing, and fatigue life testing) before leaving the factory, with a qualified rate of 99.94%.

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, while directly addressing user pain points such as equipment failure, low efficiency, and high maintenance costs:

• PDC Drill 311mm MS1951SS: A core drilling component for 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 38) with a drilling efficiency of 15m/h, 40% higher than traditional carbide drill bits, and a service life of 150 drilling hours.

• Rexroth Valve R431009234/7P-9: Controls the flow and pressure of hydraulic oil in ZJ series drilling rig hydraulic systems, enabling precise control of components such as winches, drill strings, and hydraulic cylinders. It has a maximum working pressure of 31.5MPa, a response time of 0.04 seconds, and ensures smooth and accurate operation of the hydraulic system.

• Boiler WNS2-1.25-5Y Burner Fuel Nozzle BALTUR: Atomizes fuel for combustion in WNS2-1.25-5Y boilers, ensuring complete fuel combustion and efficient heat generation. It has a fuel flow rate of 150kg/h and an atomization effect of 80μm, improving boiler thermal efficiency by 10%.

• Brake Device ZJ50L Open Clamp Arm Assembly KB-00: A key component of ZJ50L drilling rig disc brakes, responsible for clamping the brake disc to generate braking force. It is made of high-strength alloy steel, with a maximum clamping force of 3000N, ensuring reliable braking of the drill string during drilling.

• “L” & “P” Hydraulic Circuit Hose Assy (9705220005/9705220003): Transmit high-pressure hydraulic oil in drilling rig hydraulic circuits, with a maximum working pressure of 35MPa and a temperature resistance range of -40℃ to 120℃. They feature a multi-layer braided structure, ensuring burst resistance and leak-free operation.

Structural Features

Design Advantages of Core Components

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

• Drilling Core Components: The PDC Drill 311mm MS1951SS adopts a multi-tooth distribution structure, which evenly distributes drilling pressure and reduces single-tooth wear. The B073M Slurry Pump Shaft features a quenched and tempered heat treatment process, with a hardness of HRC 32-38, improving its fatigue life by 35% compared with ordinary pump shafts.

• Valves & Hydraulic Components: The Rexroth Valve R431009234/7P-9 uses a spool valve structure with a hard chrome-plated surface (thickness 0.09mm), improving wear resistance and corrosion resistance. The “L” & “P” Hydraulic Circuit Hose Assy adopt a synthetic rubber inner layer and stainless steel braided outer layer, with a burst pressure of 105MPa (3 times the maximum working pressure).

• Brake & Transmission Parts: The Brake Device ZJ50L Open Clamp Arm Assembly KB-00 adopts a lever-type clamping structure, ensuring uniform clamping force and stable braking performance. The Front Drive Shaft 5000700189 uses a universal joint design, which can compensate for axial and radial deviations, reducing vibration and wear.

• Seals & Fasteners: The O-RING LOCATING 36001-0209 is made of high-temperature resistant nitrile rubber, which can work normally at -40℃ to 125℃, ensuring reliable sealing in high-temperature hydraulic systems. The Countersunk Screw ZJ BK-11-S2 features a precision-threaded design, ensuring tight connection and preventing loosening during high-vibration operation.

Applicable Working Conditions

Our 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 Oilfield Drilling: Suitable for ZJ-30C, ZJ-40, ZJ45, ZJ50, ZJ50L, DQ70BSD drilling rigs, able to withstand high temperature (temperature range: -45℃ to 135℃), high pressure (up to 35MPa), dusty, and humid environments. Key products include PDC Drill 311mm MS1951SS, Rexroth Valve R431009234/7P-9, and Brake Device ZJ50L Open Clamp Arm Assembly KB-00.

• Industrial Equipment Operations: Applicable to Boiler WNS2-1.25-Y, WNS2-1.25-5Y, Metso Pump, BOMCO F800/1000 Pump, and V20F Steering System, adapting to continuous operation and high-temperature working conditions. Key products include Burner Fuel Nozzle BALTUR, Supercharger Assembly 7C6648, and Rear Repair Kit 8C4458.

• Emergency Maintenance Scenarios: Suitable for quick replacement of worn parts in drilling rigs and industrial equipment, with high compatibility to ensure maintenance work can be completed efficiently (replacement time for key parts ≤ 1.5 hours). Key products include Filter Element FS1212, O-RING LOCATING 36001-0209, and Fasten the Screw Nut PSZ75A-2-06.09.

• High-Load & High-Pressure Operations: Applicable to deep drilling, high-pressure hydraulic systems, and heavy-load transmission scenarios, where components such as the Safety Valve 512704020000032018 and High Pressure Control Valve JLKK 78/105 can withstand extreme pressure, ensuring stable operation without failure.

Maintenance & Care Recommendations

Proper maintenance and care can extend the service life of 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 clear technical reference for users:

• Regular Inspection: Conduct a comprehensive inspection of key components every 350 operating hours. For example, check the wear of the PDC Drill 311mm MS1951SS (replace when cutting tooth wear exceeds 3mm), inspect the sealing performance of the Hydraulic Circuit Hose Assy (replace if there is oil leakage), and check the Rexroth Valve R431009234/7P-9 for response speed (calibrate if response time exceeds 0.06 seconds).

• Lubrication Maintenance: Apply appropriate lubricating oil to transmission components (such as Front Drive Shaft 5000700189 and Bushing BKD-7-6D8) every 120 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, acid, and alkali) to prevent rust and damage. For electrical parts (such as SCR Insurance Z301552) and filters, store them in sealed packaging to avoid moisture and contamination.

• Replacement Standards: Replace parts in accordance with service life and wear standards. For example, the service life of the Filter Element FS1212 is 120 operating hours, and it should be replaced in time to ensure filtration efficiency; the service life of the PDC Drill 311mm MS1951SS is 150 drilling hours, and regular inspection and replacement should be carried out to ensure drilling efficiency.

We supply the following spare parts:

Tooth board DQ70BSD 9705225404

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: ZJ50L Drilling Rig Disc Brake Failure

Equipment Model: ZJ50L drilling rig disc brake system
Fault Phenomenon: The disc brake could not clamp the brake disc effectively, and the drill string could not be locked, posing a safety hazard during drilling.
Fault Diagnosis: After inspection, the Brake Device ZJ50L Open Clamp Arm Assembly KB-00 was worn and deformed, unable to generate sufficient clamping force; the Lock Spring AH1001010411 was broken, leading to loose operation.
Maintenance Solution: Replace the Open Clamp Arm Assembly with our KB-00 and the Lock Spring with AH1001010411 (100% compatible with ZJ50L drilling rigs). Adjust the clamping gap and test the braking performance.
Result: The disc brake resumed normal clamping performance, with a clamping force of 3000N, ensuring safe drilling operation. No similar faults occurred within 10 months of use.

Case 2: WNS2-1.25-5Y Boiler Combustion Failure

Equipment Model: Boiler WNS2-1.25-5Y
Fault Phenomenon: The boiler burner burned incompletely, with black smoke emitted, and the thermal efficiency dropped by 15%, affecting industrial production.
Fault Diagnosis: The Burner Fuel Nozzle BALTUR was worn and clogged, leading to poor fuel atomization and incomplete combustion.
Maintenance Solution: Replace the fuel nozzle with our BALTUR model (compatible with WNS2-1.25-5Y boilers). Clean the burner and adjust the fuel supply pressure to 0.3MPa.
Result: The boiler burner burned completely, black smoke disappeared, and thermal efficiency returned to the standard value. No similar faults occurred within 7 months of use.

Case 3: ZJ Series Drilling Rig Hydraulic System Pressure Instability

Equipment Model: ZJ50 drilling rig hydraulic system
Fault Phenomenon: The hydraulic system pressure fluctuated greatly (18-32MPa), leading to unstable operation of the winch and drill string.
Fault Diagnosis: The Rexroth Valve R431009234/7P-9 was worn, leading to internal leakage; the “P” Hydraulic Circuit Hose Assy 9705220003 had a small leak, causing pressure loss.
Maintenance Solution: Replace the Rexroth Valve with our R431009234/7P-9 and the Hydraulic Circuit Hose Assy with 9705220003. Clean the hydraulic system and adjust the pressure to 28MPa.
Result: The hydraulic system pressure stabilized, and the winch and drill string operated normally. No similar faults occurred within 8 months of use.

FAQ (Frequently Asked Questions)

Procurement Guide & Technical Support

We provide a complete procurement solution to meet your needs for high-quality 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 fasteners (Countersunk Screw ZJ BK-11-S2, Nut M10 MECC Standard), filters (Filter Element FS1212), or large core assemblies (PDC Drill 311mm MS1951SS, Rexroth Valve R431009234/7P-9), 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, long service life, and perfect compatibility with your equipment.

If you need to purchase any of the above products (including PDC Drill 311mm MS1951SS, Rexroth Valve R431009234/7P-9, Boiler WNS2-1.25-5Y Burner Fuel Nozzle BALTUR, 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, minimize equipment downtime, and improve work efficiency.

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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.