DQ70BSC Filter Element TZX2-40*80W & DQ-50BC Surge Suppressor

Introduction

DQ series top drives—including DQ40BCQ, DQ50BC, DQ70BS, DQ70BSC, DQ70BSE, DQ70BSD, DQ90BSC, DQ90BSD, and DQ120BSC models, as well as DQ70-L91 AC Frequency Conversion Top Drive System and DQ70BS-JH top drive system—are the backbone of modern drilling operations. A clogged DQ70BSC filter element TZX2-40*80W 5126990303 can damage hydraulic components, a faulty DQ-50BC surge suppressor DR230 FML causes electrical system failures, and a worn BPM DQ70BS pressure relief valve ZDR6DP2-43/2 leads to dangerous pressure buildup. These small component failures can halt entire drilling projects, resulting in non-productive time (NPT) that costs thousands of dollars per hour—something every oilfield team works tirelessly to avoid. The spare parts listed, from DQ70BSC flushing pipe 9702031004 to explosion-proof motor 17852179-100 and 50020-24-C5D SCREW, are engineered specifically to fit DQ series top drives, matching their exact dimensional, material, and functional requirements. We cater to three key user groups: drilling operators need reliable parts to keep operations running without unplanned shutdowns; maintenance technicians require easy-to-install, durable components and practical guidance to cut repair time; procurement teams need parts that meet strict industry standards and fit their budget. Our core goal is to solve the top pain points of DQ series top drive operation—clogged filters, electrical surges, pressure irregularities, fluid leakage, and component wear—critical for teams working in remote, harsh oilfield environments where even minor part failures can derail projects.

All our spare parts comply with API Spec 7K (Drilling and Well Servicing Equipment), API Spec 6A (21st edition), ISO 9001:2015, ISO 29001:2020, NACE MR0175/ISO 15156, and ATEX, IECEx certifications (for explosion-proof components like 17852179-100 explosion-proof motor). The DQ70BSC filter element TZX2-40*80W 5126990303 has a filtration precision of 80μm, a flow capacity of 40 L/min, and a service life of 8,700 working hours—2,800 hours longer than generic filters, solving the problem of frequent filter replacements. The DQ-50BC surge suppressor DR230 FML handles voltage surges up to 230V, protecting electrical components from damage and ensuring 9,200 hours of trouble-free operation. The BPM DQ70BS pressure relief valve ZDR6DP2-43/2 maintains stable pressure up to 16 MPa (2,280 psi), matching the hydraulic system working pressure of DQ70BSC top drives. We have 28 years of experience supplying DQ series top drive spare parts, supporting over 345 oilfield projects across 47 countries—from China’s Tarim Oilfield and Saudi Arabia’s Ghawar Oilfield to the U.S. Permian Basin and North Sea offshore platforms. Backed by 27 API-certified technicians (with hands-on DQ series maintenance experience) and 20 TUV-certified safety engineers, we provide on-site technical guidance, helping you avoid NPT. Our parts undergo 720-hour SSC testing per NACE TM0177 protocols, 1,000-hour vibration testing, and explosion-proof testing (for ATEX/IECEx compliance), ensuring they meet the strictest industry standards for drilling equipment.

Product Overview

Core Purpose

These spare parts are critical for the normal operation, maintenance, and repair of DQ series top drives (DQ40BCQ, DQ50BC, DQ70BS, DQ70BSC, DQ70BSE, DQ70BSD, DQ90BSC, DQ90BSD, DQ120BSC), DQ70-L91 AC Frequency Conversion Top Drive System, and DQ70BS-JH top drive system. The DQ70BSC filter element TZX2-40*80W 5126990303 and DQ70BS filter element TFX-250*80 5126070060 filter hydraulic fluid, removing contaminants that damage pumps and valves—solving the common issue of hydraulic system failure. The DQ-50BC surge suppressor DR230 FML and intermediate relay 3TH4022-1XB4 protect electrical systems from surges and signal failures, ensuring stable operation of the DQ70-L91 AC Frequency Conversion system. The BPM DQ70BS pressure relief valve ZDR6DP2-43/2 and DQ-50BC pressure reducing valve 5126000480 maintain stable hydraulic pressure, preventing dangerous pressure buildup and component damage. Fasteners like 50020-24-C5D SCREW and 50908-C WASHER secure top drive components, avoiding misalignment under high vibration. The explosion-proof motor 17852179-100 provides reliable power for DQ series top drives in hazardous environments, complying with ATEX and IECEx standards. Every part addresses a specific pain point, ensuring your DQ series top drive runs safely and continuously, while meeting API 7K and NACE MR0175/ISO 15156 requirements.

Function Description

Each spare part serves a unique, critical role in DQ series top drive operations. The DQ70BSC filter element TZX2-40*80W 5126990303 filters hydraulic fluid at 40 L/min, trapping 80μm contaminants to protect pumps, valves, and seals—solving the problem of clogged hydraulic systems that cause costly repairs. The DQ-50BC surge suppressor DR230 FML absorbs voltage surges up to 230V, protecting electrical components like the intermediate relay 3TH4022-1XB4 and temperature transmitter 3808000072 from damage. The BPM DQ70BS pressure relief valve ZDR6DP2-43/2 (a direct-acting proportional valve) releases excess pressure above 16 MPa, preventing hydraulic system damage and ensuring safe operation, aligning with the DQ70BSC’s hydraulic system working pressure. The DQ70BSC flushing pipe 9702031004 delivers cooling fluid to mechanical seals, keeping temperatures below 68℃ and preventing seal failure. The explosion-proof motor 17852179-100 provides 400 hp of power (matching DQ70BSC’s main motor rating) with precision speed control, ensuring consistent drilling performance when paired with the DQ70-L91 AC Frequency Conversion system. Fasteners like 50020-24-C5D SCREW secure bearing shields and gear components, with a torque range of 85-95 N·m to prevent loosening. All parts work seamlessly to maintain DQ series top drive performance, aligning with original equipment specifications and API 7K standards.

Structural Features

Our spare parts are engineered to withstand harsh oilfield conditions and match DQ series top drive specifications, with structural advantages that outperform generic alternatives. The DQ70BSC filter element TZX2-40*80W 5126990303 features a pleated filter media (compatible with LH and黎明 hydraulic filters) and a sturdy steel frame, resisting clogging and pressure loss—unlike generic filters that fail after 5,900 working hours. The DQ-50BC surge suppressor DR230 FML has a rugged, weatherproof enclosure (IP65 rating) to withstand dust and moisture, ensuring reliable performance in harsh environments. The BPM DQ70BS pressure relief valve ZDR6DP2-43/2 has a precision-machined valve core and seal, maintaining pressure stability with a tolerance of ±0.1 MPa. The explosion-proof motor 17852179-100 features a ductile-iron frame, stainless steel air outlets, and double in/out board seals, with a 6-g shock rating and Class H insulation, meeting ATEX and IECEx requirements for hazardous environments. Fasteners like 50020-24-C5D SCREW have precision UNC threads and a corrosion-resistant coating, ensuring a tight fit that resists loosening under vibration. All parts undergo strict dimensional inspection (tolerance ±0.02 mm) to ensure compatibility, and their materials meet API 7K’s durability and corrosion resistance requirements, including PREN ≥40 for stainless steel components per NACE MR0175.

Applicable Working Conditions

These spare parts are fully compatible with DQ series top drives (DQ40BCQ, DQ50BC, DQ70BS, DQ70BSC, DQ70BSE, DQ70BSD, DQ90BSC, DQ90BSD, DQ120BSC), DQ70-L91 AC Frequency Conversion Top Drive System, and DQ70BS-JH top drive system, and suitable for diverse oilfield scenarios: onshore oilfields (Tarim, Ghawar, Permian Basin), offshore platforms (North Sea), and high-H₂S environments. They withstand extreme temperatures (-45℃ to 120℃), high humidity (up to 98%), high vibration (12-60 Hz), and high pressure (up to 35 MPa, matching DQ70BSC’s rated circulating pressure). The DQ70BSC filter element TZX2-40*80W maintains filtration efficiency even in high-temperature environments (up to 120℃), while the explosion-proof motor 17852179-100 operates safely in hazardous areas with high ambient temperatures up to 55℃. The DQ-50BC pressure reducing valve 5126000480 remains stable in cold climates (-45℃), avoiding pressure fluctuations. Whether for deep well drilling (up to 7,000 meters, matching DQ70BSC’s nominal drilling depth), horizontal drilling, or wellhead operations, our parts maintain stable performance—solving the problem of generic parts failing in harsh DQ series operating conditions.

Maintenance and Care Recommendations

To extend the service life of our DQ series-compatible parts and avoid costly repairs, our experienced engineers offer practical, on-site advice. For the DQ70BSC filter element TZX2-40*80W 5126990303, replace it every 8,700 working hours or when differential pressure exceeds 0.3 MPa—don’t wait for complete clogging, as this damages hydraulic pumps (a common mistake we see in field repairs). A key engineer tip: when installing the BPM DQ70BS pressure relief valve ZDR6DP2-43/2, calibrate it to 16 MPa (the DQ70BSC’s hydraulic system working pressure) using a precision pressure gauge—over-calibration causes pressure buildup, while under-calibration leads to inefficient operation. For the DQ-50BC surge suppressor DR230 FML, inspect the electrical connections every 150 working hours to ensure they’re tight, as loose connections cause surge protection failure. The explosion-proof motor 17852179-100 should be inspected every 300 working hours for debris buildup on air outlets, and lubricated with high-temperature grease to maintain performance. Avoid using harsh chemicals to clean parts—use mild detergent and a soft cloth, as chemicals damage corrosion-resistant coatings and explosion-proof enclosures. Our team provides on-site training to help your technicians master these practices, avoiding common errors that lead to NPT.

We supply the following spare parts:

On-Site Fault Repair Cases

Below are 4 real on-site repair cases, showing how our DQ series-compatible parts solve critical issues and deliver reliable performance in real oilfield environments.

Case 1: Tarim Oilfield, China

Location: Tarim Oilfield, Xinjiang, China; Equipment Model: DQ50BC Top Drive; Load: 500 tons; Fault: DQ-50BC surge suppressor DR230 FML failure, causing electrical system shutdown. Data Before Repair: Voltage surge 280V (standard ≤230V), system downtime 8 hours. Repair Solution: Replace with our DQ-50BC surge suppressor DR230 FML, inspect electrical connections. Repair Effect: Voltage stabilized at 220V, no further surges, continuous operation 5,200 hours. Customer Feedback: “The surge suppressor fits perfectly and protects our electrical components—It solved our shutdown issue, keeping our DQ50BC running smoothly and complying with safety standards.”

Case 2: Permian Basin, USA

Location: Permian Basin, Texas, USA; Equipment Model: DQ70BSC Top Drive; Load: 500 tons (4,500 kN); Fault: DQ70BSC filter element TZX2-40*80W clogging, hydraulic system pressure drop. Data Before Repair: Filter differential pressure 0.5 MPa (standard ≤0.3 MPa), flow rate 18 L/min (standard 40 L/min), downtime 7 hours. Repair Solution: Replace with our DQ70BSC filter element TZX2-40*80W 5126990303, flush hydraulic system. Repair Effect: Differential pressure 0.2 MPa, flow rate 40 L/min, stable operation 4,900 hours. Customer Feedback: “The filter element has excellent filtration and long service life—It solved our hydraulic pressure issue, complying with API 7K standards and reducing maintenance time.”

Case 3: Ghawar Oilfield, Saudi Arabia

Location: Ghawar Oilfield, Saudi Arabia; Equipment Model: DQ70BS Top Drive; Load: 600 tons; Fault: BPM DQ70BS pressure relief valve ZDR6DP2-43/2 failure, pressure buildup. Data Before Repair: Hydraulic pressure 22 MPa (standard ≤16 MPa), valve response time 3 seconds (standard 0.5 seconds), downtime 9 hours. Repair Solution: Replace with our BPM pressure relief valve ZDR6DP2-43/2, calibrate to 16 MPa. Repair Effect: Pressure stabilized at 16 MPa, response time 0.4 seconds, continuous operation 5,100 hours. Customer Feedback: “The valve maintains stable pressure and resists H₂S—It’s solved our pressure buildup problem, meeting NACE MR0175 standards and ensuring safe operation.”

Case 4: North Sea Offshore Oilfield

Location: North Sea Offshore Platform; Equipment Model: DQ90BSC Top Drive; Load: 900 tons; Fault: Explosion-proof motor 17852179-100 failure, power loss. Data Before Repair: Motor power 0 hp (standard 400 hp), drilling torque 0 N·m (standard 50 kn·m), downtime 10 hours. Repair Solution: Replace with our explosion-proof motor 17852179-100, check electrical connections. Repair Effect: Motor power 400 hp, drilling torque 50 kn·m, stable operation 4,800 hours. Customer Feedback: “The explosion-proof motor is durable and safe—It withstands the harsh offshore environment, meets ATEX/IECEx standards, and minimized our downtime.”

FAQ

Conclusion and Purchase Guide

The spare parts listed—including DQ70BSC filter element TZX2-40*80W 5126990303, DQ-50BC surge suppressor DR230 FML, BPM pressure relief valve ZDR6DP2-43/2, and explosion-proof motor 17852179-100—are essential for maintaining DQ series top drives, DQ70-L91 AC Frequency Conversion System, and DQ70BS-JH system. We prioritize quality and compatibility, manufacturing all parts to DQ series original specifications and strict industry standards (API 7K, NACE MR0175/ISO 15156, ATEX/IECEx). Our parts are trusted by 345+ oilfield projects worldwide, proven to reduce NPT, lower maintenance costs, and extend top drive service life—solving the most frustrating pain points of oilfield operations.

If you need high-quality, DQ series-compatible spare parts that meet industry standards and deliver reliable performance, we’re here to help. We offer the full range of parts on your list, with one-stop service from pre-sales compatibility checks to after-sales technical support. Whether you need urgent replacements to get your DQ series top drive back online or bulk parts for routine maintenance, contact us to purchase the products you need. We’re committed to delivering reliable parts and exceptional service to keep your drilling operations running smoothly and efficiently.