XQ20 Series Spare Parts (XQ20-78, XQ20-83, XQ20-122) for Oilfield Tong Head

Introduction to XQ20-78 to XQ20-125 Spare Parts

In oilfield drilling operations, tong head assemblies and transmission systems are the core components that ensure the safety and efficiency of pipe handling, torque control, and power transmission. The XQ20 series spare parts, covering models from XQ20-78 to XQ20-125, are specifically designed to fit XYQ12 series, XQ20 series drilling equipment—including XQ20.1.1 tong head assemblies, XYQ12.Z-01.13 pins, XQ20.1.1-5 ramps, GB/T283 cylindrical roller bearings (NJ309E, NJ2309E), and XQ20.1-1 shells. These parts are widely used in drilling tong heads, transmission gearboxes, and centering roller systems, solving the core pain points that oilfield teams often face: frequent part wear, fastener loosening, bearing jamming, brake failure, and unexpected shutdowns that lead to lost drilling time, increased maintenance costs, and even safety hazards.

Our XQ20-78 to XQ20-125 spare parts are manufactured in strict compliance with national standards such as GB/T70.1, GB/T283, GB/T3452.1, and JB/T7940.4, with each component undergoing 15 rigorous quality inspections—from raw material selection and precision machining to final performance 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). We have supplied parts to more than 75 oilfields worldwide, with a cumulative service life of over 1,020,000 hours in actual drilling conditions—far exceeding the industry average of 620,000 hours. Our core goal 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 XQ20-78 to XQ20-125 spare parts cover a complete range of components for oilfield tong head assemblies and transmission systems, including fasteners (XQ20-83 Hexagon socket head cap screw M12x75, XQ20-91 M8x14), transmission parts (XQ20-122 Cylindrical roller bearing NJ309E, XQ20-124 NJ2309E, XQ20-121 Idle gear), tong head components (XQ20-7 Tong head assembly, XQ20-85 Tong head cover, XQ20-84 Brake band), and auxiliary parts (XQ20-119 O-ring 45×3.55, XQ20-106 Forced filling oil cup, XQ20-118 Waterproof cover). Each part is precision-machined using high-strength alloy steel (for shafts, bearings, and gears) 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 XQ20-78 to XQ20-125 series is designed to address specific on-site pain points that oilfield teams face daily, turning technical parameters into practical solutions:

• XQ20-83 Hexagon socket head cap screw M12x75 (GB/T70.1): Made of 8.8-grade high-strength carbon steel with a发黑 surface treatment, it features a half-thread design that enhances connection stability and anti-slip performance. It solves the problem of screw loosening or breakage under high torque (up to 240N·m) during tong head operation, avoiding equipment displacement and safety risks. Its nominal diameter is 12mm, screw length 75mm, and pitch 1.75mm, providing strong fastening force for heavy-load components.

• XQ20-122 Cylindrical roller bearing NJ309E (GB/T283): Adopts a separable design with high radial load capacity and low friction, solving the problem of bearing jamming caused by dust and drilling fluid contamination—one of the most common causes of transmission system failures. Its service life reaches 15,800 hours, compared to 7,600 hours for ordinary cylindrical roller bearings on the market, and it allows one-way axial displacement for easier installation.

• XQ20-84 Brake band (XQ20.1.2-1): Made of high-temperature resistant friction material, it solves the problem of brake failure due to band wear or deformation, which can lead to dangerous pipe slipping during drilling. It can withstand a maximum temperature of 200℃ and maintain stable friction performance, ensuring timely braking even under high-load conditions.

• XQ20-119 O-ring 45×3.55 (GB/T3452.1): Made of oil-resistant nitrile rubber, it solves the problem of hydraulic system leakage caused by O-ring aging, avoiding fluid loss and reduced system pressure. Its service life reaches 9,200 hours under 120℃ working conditions, compared to 4,500 hours for ordinary O-rings.

3. Structural Features

The XQ20-78 to XQ20-125 spare parts have unique structural advantages that make them ideal for the harsh and demanding oilfield environment, combining durability and practicality:

• High-strength material and precision heat treatment: Gears, bearings, and shafts are made of high-strength alloy steel and undergo quenching and tempering heat treatment, which increases their surface hardness to HRC 61-65—making them 2.6 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 0.01mm, ensuring perfect fit with original equipment. This avoids installation difficulties caused by size deviation and reduces on-site adjustment time by up to 45 minutes per part.

• Corrosion-resistant and sealed design: Fasteners are coated with anti-corrosion发黑 treatment to resist drilling fluid and moisture corrosion; bearings (XQ20-122, XQ20-124) adopt sealed structures to prevent dust and debris from entering; O-rings comply with GB/T3452.1 standards, ensuring tight sealing and long service life.

• 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, which is crucial for reducing downtime.

4. Applicable Working Conditions

The XQ20-78 to XQ20-125 spare parts are specifically designed to adapt to the harsh working conditions of oilfield drilling, covering various on-site scenarios:

• Onshore oilfields (e.g., Daqing, Karamay): Adapt to dusty, high-temperature environments (up to 185℃), with sealed bearings 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 85MPa) and high torque (up to 2800N), ensuring stable operation of tong heads, bearings, and transmission 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-strength brake bands and bearings 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 safety incidents involving tong systems, our engineers provide the following practical suggestions to extend the service life of XQ20-78 to XQ20-125 spare parts and avoid common pitfalls:

• Regular inspection: Check fasteners (XQ20-83, XQ20-91) and bearings (XQ20-122, XQ20-124) every 300 hours of operation; if screws are loose or bearings make abnormal noise, tighten or replace them in time. Loose fasteners can cause component displacement, while faulty bearings can lead to transmission system shutdowns.

• Bearing maintenance: For cylindrical roller bearings (XQ20-122, XQ20-124), apply high-temperature lubricating grease every 180 hours; clean the old grease before applying to avoid mixing impurities that reduce lubrication effect. The separable design of these bearings makes maintenance and replacement easier, saving on-site time.

• Brake band care: Check XQ20-84 brake bands every 500 hours; if the wear amount exceeds 0.6mm, replace them in time to avoid brake failure. Avoid overheating the brake band during operation, as this can reduce its service life.

• Installation tips: When installing tong head components (XQ20-7, XQ20-85) and transmission parts (XQ20-96, XQ20-121), ensure the installation position is accurate; do not force installation, as this can damage threads or deform components. After installation, run the equipment for 20 minutes to check for abnormal noise or vibration—never put hands inside tongs during operation to avoid serious injuries.

• 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. Do not overload components beyond their rated load; for example, the XQ20-83 screw should not bear more than 240N·m of torque, as this will cause breakage. Also, ensure O-rings are stored in a cool, dry place 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 XQ20-78 to XQ20-125 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: XQ20.1.1 tong head assembly; Fault component: XQ20-83 Hexagon socket head cap screw M12x75; Load: 220N·m; Fault description: The screw loosened during high-torque pipe handling, causing the tong head cover to shift and unable to clamp pipes. Maintenance measures: Replace with XQ20-83 screw (GB/T70.1, 8.8-grade,发黑 surface treatment); Repair effect: The screw maintains stable fastening force, no loosening occurs after 1,600 hours of operation, and the tong head clamps pipes securely. Customer feedback: "The new screw is very firm, with good anti-slip performance, and we no longer need to frequently check and tighten it—saving us a lot of maintenance time."

Case 2: Karamay Oilfield, Xinjiang

Equipment model: XQ20.1-1 shell transmission system; Fault component: XQ20-122 Cylindrical roller bearing NJ309E; Load: 2100N; Fault description: The bearing was contaminated by drilling fluid, causing jamming and abnormal noise, leading to transmission system shutdown. Maintenance measures: Replace with XQ20-122 cylindrical roller bearing (GB/T283) and clean the transmission system; Repair effect: The bearing runs smoothly, friction coefficient is reduced to 0.008, and it has been in stable operation for 15,800 hours. Customer feedback: "The new bearing is durable and easy to install, and it effectively prevents dust and drilling fluid from entering—our transmission system runs without interruptions now."

Case 3: Shunbei Oilfield, Xinjiang

Equipment model: XQ20.1.2-1 brake system; Fault component: XQ20-84 Brake band; Load: 1800N; Fault description: The brake band was severely worn (wear amount 0.8mm), causing brake failure and pipe slipping risk. Maintenance measures: Replace with XQ20-84 brake band (high-temperature friction material); Repair effect: The friction coefficient reaches 0.45, braking response time is 0.3 seconds, and it has been in stable operation for 10 months. Customer feedback: "The new brake band has excellent braking performance, even under high load, it can stop the equipment quickly—avoiding dangerous pipe slipping incidents."

Case 4: Shengli Oilfield, Shandong

Equipment model: XYQ12.Z-01.13 tong head; Fault component: XQ20-119 O-ring 45×3.55; Load: 70MPa; Fault description: The O-ring aged and leaked, causing hydraulic system pressure drop and tong head failure. Maintenance measures: Replace with XQ20-119 O-ring (GB/T3452.1); Repair effect: No leakage occurs after replacement, system pressure stabilizes at 70MPa, and the O-ring service life reaches 9,200 hours. Customer feedback: "The O-ring has good oil resistance and durability, reducing the frequency of replacement and saving us maintenance costs."

FAQ (Frequently Asked Questions)

Purchase Guide & Conclusion

The XQ20-78 to XQ20-125 series spare parts are engineered to solve the most common pain points of oilfield tong head assemblies and transmission systems, with high durability, perfect compatibility, and strict quality control. Backed by ISO 9001 and API 7K certification, 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 75 oilfields, with a cumulative service life exceeding 1,020,000 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.

We provide professional technical guidance on installation and maintenance to solve your on-site worries, drawing on lessons from past safety incidents to help you avoid common operational risks. Whether you need to replace fasteners, bearings, brake bands, O-rings, or other components, the XQ20-78 to XQ20-125 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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