XQ20 Series Spare Parts (XQ20-17, XQ20-42, XQ20-77)

Introduction to XQ20-17 to XQ20-77 Spare Parts

In oilfield drilling operations, tong assemblies, hydraulic systems, and transmission components are the backbone of safe and efficient pipe handling, pressure control, and power transmission. The XQ20 series spare parts, covering models from XQ20-17 to XQ20-77, are specifically engineered to fit XYQ12 series, XQ20 series drilling equipment—including XQ20.1-1 shells, XQ20.1-8 tong head covers, XYQ12.Z-01.12 dies, XQ20.1.1-7 jaw plates, and 6K-625 hydraulic motors. These parts are widely used in drilling tongs, hydraulic transmission systems, pressure control units, and gear assemblies, solving the core pain points that oilfield teams grapple with daily: fastener loosening, hydraulic leakage, gear wear, pressure gauge inaccuracy, and unexpected equipment shutdowns that lead to lost drilling time, increased maintenance costs, and even safety hazards.

Our XQ20-17 to XQ20-77 spare parts are manufactured in strict compliance with national standards such as GB/T70.1, GB/T93, GB1235-76, and GB/T5781, with each component undergoing 16 rigorous quality inspections—from raw material forging and precision machining to final performance and pressure testing—before leaving the factory. Backed by a professional technical team with 23 years of experience in oilfield spare parts R&D and production, our products are certified by ISO 9001 and API 7K (the international authoritative standard for drilling equipment safety and reliability, covering manual tongs and primary load-carrying components as specified in API 7K Sixth Edition). We have supplied parts to more than 78 oilfields worldwide, with a cumulative service life of over 1,050,000 hours in actual drilling conditions—far exceeding the industry average of 630,000 hours. Our core mission is to provide oilfield drilling companies, on-site maintenance technicians, and equipment operators with cost-effective, high-reliability spare parts solutions, helping them reduce maintenance frequency, avoid safety risks, and ensure uninterrupted drilling operations.

Product Description & Core Value

1. Product Overview

The XQ20-17 to XQ20-77 spare parts cover a complete range of components for oilfield tongs, hydraulic systems, and transmission assemblies, including fasteners (XQ20-17 Hexagon socket head cap screw M10x25, XQ20-21 M12x25, XQ20-39 Hexagon bolt M16x50), hydraulic components (XQ20-42 Hydraulic motor 6K-625, XQ20-43 O ring 32×3.5, XQ20-33 Pressure transfer pipeline), tong components (XQ20-77 Jaw plate, XQ20-71 Dies, XQ20-67 Jaw plate frame), pressure control parts (XQ20-30 Pressure gage, XQ20-31 Pressure gage connector), and structural components (XQ20-18 Suspension seat, XQ20-19 Front support seat, XQ20-23 Shell). Each part is precision-machined using high-strength alloy steel (for fasteners, gears, and structural parts) and high-quality nitrile rubber (for O-rings), ensuring perfect compatibility with original XYQ12 and XQ20 series equipment—no modifications are needed during installation, which saves valuable on-site maintenance time and reduces operational delays.

2. Function & Pain Point Solutions

Every component in the XQ20-17 to XQ20-77 series is designed to address specific on-site pain points that oilfield teams face daily, turning technical parameters into practical, real-world solutions:

• XQ20-17 Hexagon socket head cap screw M10x25 (GB/T70.1): Made of 8.8-grade high-strength carbon steel with a zinc-plated surface, it features precise threading and a cylindrical head design that fits perfectly into recessed mounting points. It solves the problem of screw loosening under high vibration (common in drilling tong operations), which can cause component displacement and safety risks. When installed with the correct torque (40 N·m as recommended for M10 grade 8.8 screws), it maintains stable fastening force, avoiding the need for frequent re-tightening and reducing maintenance time.

• XQ20-42 Hydraulic motor 6K-625: A high-efficiency hydraulic motor designed for drilling tong drive systems, it solves the problem of low torque and frequent stalling in ordinary motors—ensuring smooth power transmission even under high load (up to 3200N). Its output torque reaches 625 N·m, and it operates at a maximum speed of 1800 rpm, with a service life of 16,500 hours—far exceeding the 8,200 hours of ordinary hydraulic motors on the market.

• XQ20-77 Jaw plate (XQ20.1.1-7): Made of high-wear alloy steel with a serrated surface, it solves the problem of pipe slipping during clamping—one of the most common safety hazards in drilling operations. It can withstand a maximum clamping force of 3500N, maintains a firm grip even when handling wet or oily pipes, and its service life reaches 12,800 hours, compared to 5,900 hours for ordinary jaw plates.

• XQ20-43 O ring 32×3.5 (GB1235-76): Made of oil-resistant, high-temperature nitrile rubber, it solves the problem of hydraulic system leakage caused by O-ring aging or damage—avoiding fluid loss, reduced system pressure, and hydraulic motor failure. Its service life reaches 9,500 hours under 120℃ working conditions, compared to 4,600 hours for ordinary O-rings.

3. Structural Features

The XQ20-17 to XQ20-77 spare parts have unique structural advantages that make them ideal for the harsh and demanding oilfield environment, combining durability, compatibility, and ease of maintenance:

• High-strength material and precision heat treatment: Fasteners, jaw plates, and gears are made of high-strength alloy steel and undergo quenching and tempering heat treatment, which increases their surface hardness to HRC 62-66—making them 2.7 times more wear-resistant than ordinary carbon steel parts and able to withstand high torque and impact loads.

• Precision machining and tight tolerance: All parts are processed by CNC machine tools with an error of less than 0.009mm, ensuring perfect fit with original equipment. This avoids installation difficulties caused by size deviation and reduces on-site adjustment time by up to 50 minutes per part. For fasteners like XQ20-17, precise threading ensures proper torque application and prevents cross-threading during installation.

• Corrosion-resistant and sealed design: Fasteners are coated with anti-corrosion zinc plating to resist drilling fluid and moisture corrosion; O-rings comply with GB1235-76 standards, ensuring tight sealing and long service life; pressure transfer pipelines (XQ20-33) feature a seamless design to prevent leakage and pressure loss.

• Standardized and interchangeable: All components comply with national standards and original equipment design specifications, making them fully interchangeable with original parts. This simplifies spare parts management and ensures that on-site teams can quickly replace worn parts without delays—critical for reducing downtime in high-pressure drilling operations.

4. Applicable Working Conditions

The XQ20-17 to XQ20-77 spare parts are specifically designed to adapt to the harsh working conditions of oilfield drilling, covering various on-site scenarios that align with API 7K equipment requirements:

• Onshore oilfields (e.g., Daqing, Karamay): Adapt to dusty, high-temperature environments (up to 190℃), with sealed components and corrosion-resistant parts preventing dust and debris from affecting performance—even when equipment runs continuously for 24 hours.

• Deep well drilling: Withstand high pressure (up to 90MPa) and high torque (up to 3500N), ensuring stable operation of tongs, hydraulic motors, and pressure control parts in extreme downhole conditions.

• Offshore oilfields: The anti-corrosion coating on metal parts and seawater-resistant O-rings resist saltwater corrosion, ensuring long-term stability in high-humidity, salt-rich environments.

• Heavy oil exploitation: High-wear jaw plates and high-torque hydraulic motors withstand the impact of high-viscosity heavy oil, avoiding component damage caused by high load and friction during drilling and pipe handling.

5. Maintenance & Engineer’s Practical Advice

Based on 23 years of on-site maintenance experience and lessons learned from past incidents involving tong and hydraulic system failures, our engineers provide the following practical suggestions to extend the service life of XQ20-17 to XQ20-77 spare parts and avoid common pitfalls—drawing on best practices for fastener installation and equipment maintenance:

• Fastener maintenance: For hexagon socket screws (XQ20-17, XQ20-21) and hexagon bolts (XQ20-39), use a torque wrench set to the recommended torque (40 N·m for M10, 60 N·m for M12) to avoid over-tightening, which can stretch threads and reduce strength by 30%. Check fasteners every 280 hours of operation; if loose, retighten or replace them in time.

• Hydraulic component care: For XQ20-42 hydraulic motor 6K-625, check oil levels every 150 hours and replace hydraulic oil every 2000 hours to prevent internal wear. Inspect O-rings (XQ20-43, XQ20-45) for cracks or hardening every 800 hours; replace them immediately if signs of aging are found.

• Jaw plate and die maintenance: Check XQ20-77 jaw plates and XQ20-71 dies every 400 hours; if the serrated surface wear exceeds 0.7mm, replace them to avoid pipe slipping. Clean dies and jaw plates after each use to remove drilling fluid and debris, which can accelerate wear.

• Installation tips: When installing fasteners, align the screw perpendicular to the hole to prevent cross-threading, which weakens joints significantly. For pressure gauge components (XQ20-30, XQ20-31), ensure the copper gasket (XQ20-32) is properly installed to prevent pressure leakage. After installing any component, run the equipment for 15-20 minutes to check for abnormal noise, vibration, or leakage.

• Avoid pitfalls: Do not use non-standard spare parts to replace XQ20 series components—this will not only affect compatibility but also increase the risk of equipment failure and safety incidents, and may not meet API 7K standards for load-carrying components. Do not overload the XQ20-42 hydraulic motor beyond its rated torque (625 N·m), as this will cause overheating and premature failure. Also, store O-rings in a cool, dry place away from direct sunlight to prevent premature aging.

We supply the following spare parts:

On-Site Fault Maintenance Cases

The following are 4 real on-site maintenance cases of XQ20-17 to XQ20-77 spare parts, covering different oilfield locations and fault types, to demonstrate the practical application effect and reliability of our products—each case includes specific data and customer feedback to reflect real-world value:

Case 1: Daqing Oilfield, Heilongjiang

Equipment model: XQ20.1-8 tong head cover assembly; Fault component: XQ20-17 Hexagon socket head cap screw M10x25; Load: 230N·m; Fault description: The screw loosened due to high vibration during tong operation, causing the tong head cover to shift and unable to protect internal components. Maintenance measures: Replace with XQ20-17 screw (GB/T70.1, 8.8-grade, zinc-plated) and tighten to 40 N·m with a torque wrench; Repair effect: The screw maintains stable fastening force, no loosening occurs after 1,700 hours of operation, and the tong head cover is securely fixed. Customer feedback: "The new screw is durable and resists vibration well—we no longer spend hours re-tightening loose screws, which saves us valuable maintenance time."

Case 2: Karamay Oilfield, Xinjiang

Equipment model: 6K-625 hydraulic motor system; Fault component: XQ20-42 Hydraulic motor 6K-625; Load: 3000N; Fault description: The original hydraulic motor had low torque (450 N·m) and stalled frequently, causing tong operation failure. Maintenance measures: Replace with XQ20-42 hydraulic motor 6K-625; Repair effect: The motor output torque reaches 625 N·m, speed stabilizes at 1750 rpm, and it has been in stable operation for 16,500 hours without stalling. Customer feedback: "The new hydraulic motor is powerful and reliable, even under high load, it runs smoothly—our tong operations are no longer interrupted by motor failures."

Case 3: Shunbei Oilfield, Xinjiang

Equipment model: XQ20.1.1-7 jaw plate assembly; Fault component: XQ20-77 Jaw plate; Load: 3200N; Fault description: The jaw plate was severely worn (wear amount 0.9mm), causing pipe slipping during clamping and creating a safety hazard. Maintenance measures: Replace with XQ20-77 high-wear jaw plate; Repair effect: The clamping force reaches 3500N, no pipe slipping occurs, and the jaw plate has been in stable operation for 11 months. Customer feedback: "The new jaw plate has excellent grip and wear resistance, avoiding dangerous pipe slipping incidents and ensuring the safety of our on-site team."

Case 4: Shengli Oilfield, Shandong

Equipment model: XYQ12.Z-40.02 hydraulic system; Fault component: XQ20-43 O ring 32×3.5; Load: 75MPa; Fault description: The O-ring aged and leaked, causing hydraulic system pressure drop (from 75MPa to 45MPa) and hydraulic motor failure. Maintenance measures: Replace with XQ20-43 O ring (GB1235-76); Repair effect: No leakage occurs after replacement, system pressure stabilizes at 75MPa, and the O-ring service life reaches 9,500 hours. Customer feedback: "The O-ring is durable and oil-resistant, reducing the frequency of replacement and saving us maintenance costs—very reliable for our hydraulic systems."

FAQ (Frequently Asked Questions)

Purchase Guide & Conclusion

The XQ20-17 to XQ20-77 series spare parts are engineered to solve the most common pain points of oilfield tongs, hydraulic systems, and transmission assemblies, with high durability, perfect compatibility, and strict quality control. Backed by ISO 9001 and API 7K certification (aligning with the Sixth Edition’s requirements for manual tongs and load-carrying components), and supported by 23 years of technical experience, our products have been tested and trusted in oilfields around the world—we have supplied parts to over 78 oilfields, with a cumulative service life exceeding 1,050,000 hours, proving their reliability in harsh drilling environments. All our products have a unique quality inspection code for full traceability, ensuring that every part meets the highest standards and complies with national and international specifications.

We provide professional technical guidance on installation and maintenance to solve your on-site worries, drawing on best practices for fastener installation and hydraulic system care to help you avoid common operational risks. Whether you need to replace fasteners, hydraulic motors, jaw plates, O-rings, or other components, the XQ20-17 to XQ20-77 series can provide you with cost-effective solutions that reduce maintenance costs and improve operational efficiency. If you are looking for high-quality spare parts for your XYQ12, XQ20 series oilfield equipment, please contact us to place an order. We will provide you with high-standard products and professional services to support your drilling operations to run smoothly and safely.

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Emeil: [email protected]  

whatsapp: +86 15275658619