KHT5500 & KHT7625 Series Parts: Spare Parts for XQ89/3YC, TQ340/35YA & KHT8625 Equipment

Introduction: End Unplanned Downtime with KHT5500 & KHT7625 Precision Spare Parts

If you’re an oilfield maintenance technician, procurement specialist, or equipment operator, you know the frustration of dealing with faulty spare parts—parts that don’t fit, wear out too quickly, or cause costly unplanned shutdowns. Picture this: your XQ89/3YC pipe oil power pliers grind to a halt because a main pliers pin breaks, or your TQ340/35YA equipment leaks hydraulic fluid due to a worn O-ring. These small components—like the KHT5500-115 NJ208E cylindrical roller bearing, KHT7625-911 cylinder end joint, or XQ89/3YC rear guide rod spring—are the backbone of your oilfield operations. Low-quality replacements only lead to repeated failures, wasted man-hours, and lost revenue. Our KHT5500 and KHT7625 series spare parts, along with XQ89/3YC, XYQ12, and XYQ6B pipe oil power pliers accessories, are engineered specifically to fit XQ89/3YC pipe oil power pliers, TQ340/35YA casing power tongs (which handle 4 1/2"-13 3/8" casing), KHT8625 hydraulic systems, KJD9625 drilling equipment, and NXQ140/20Y speed measuring systems. We solve the daily pain points you face: ill-fitting parts that require custom modifications, hydraulic leaks from faulty seals and joints, gear jamming from worn bearings, and loose fasteners that cause component misalignment. Whether you’re maintaining power pliers, hydraulic valves, gear systems, or bearings, our parts are designed to keep your equipment running reliably, so you can focus on safe, efficient oilfield operations.

Core Purpose: Our KHT5500 and KHT7625 series parts, plus XQ89/3YC and XYQ12 accessories, are essential replacements and upgrades for critical oilfield equipment, including XQ89/3YC pipe oil power pliers (operating at 12～18 MPa hydraulic pressure, consistent with the hydraulic system rated working pressure of TQ340/35YA equipment), TQ340/35YA casing power tongs (with a maximum torque of 39 KN.m in low gear), KHT8625 hydraulic systems, KJD9625 drilling equipment, NXQ140/20Y speed measuring gear assemblies, and 01.03-04M upper annular gear systems. The product range covers a comprehensive array of components: bearings (KHT5500-115 GB/T283 cylindrical roller bearing NJ208E, KHT5500-153 cylindrical roller 10×25), gear components (01.03-04M upper annular gear Z=60, 01.03-16M upper planet gear Z=18, KHT5500-14 master tong drive gear), hydraulic components (KHT7625-911 TQ340/35YA cylinder end joint, KHT5500-10 hydraulic valve and pipeline, KHT5500-366 cylinder), power pliers accessories (XQ89/3YC rear guide rod spring XYQ3C.HD-3, main pliers pin XYQ3C.Z-39, spline gear XYQ3C.Z-15), fasteners (KHT7625-929 GB/T91 hexagon nut M30, GB/T5781-2000 bolt M12X20, KHT5500-396 spring washer 1/2″), seals (KHT5500-140 O-ring 35.5×3.55, KHT7625-916 Y-ring Y80x65x9.5, XQ89/3YC O-type sealing ring 36*3.5), and structural parts (KHT7625-509 suspension support, KHT7625-125 baffle, 01.01-29MA wedge block I). These parts are built to restore equipment functionality, extend service life, and ensure operational safety—critical for oilfield operations where equipment failure can lead to costly downtime and safety hazards. All parts comply with strict international and industry standards, including GB/T 283, GB/T 91, GB/T 3452.1, GB1235-76, GB/T 825, API Spec 7K (the industry standard for drilling and well servicing equipment), and SY/T 5074-2004 (the Chinese national standard for oil drilling and workover power tongs). Backed by 27 years of experience in manufacturing industrial and oilfield spare parts, our products undergo 19 rigorous quality inspections—including dimensional accuracy testing, material fatigue testing, hydraulic pressure endurance trials, and bearing load testing—to ensure each part meets or exceeds original equipment specifications. Our parts have been validated in 102+ oilfield sites worldwide, with a proven service life that outperforms standard alternatives by 3,300 operating hours on average. Our KHT5500-115 NJ208E cylindrical roller bearing, for example, is tested to handle radial dynamic loads up to 55.8 kN and radial static loads up to 42.8 kN, with a limiting speed of 8,500 rpm, making it ideal for high-torque applications in TQ340/35YA power tongs, and aligns with the performance standards of similar high-quality bearings.

Product Overview: Comprehensive Spare Parts for Critical Oilfield Equipment

Our KHT5500 and KHT7625 series includes over 95 types of precision-engineered parts, plus compatible accessories for XQ89/3YC, XYQ12, and XYQ6B pipe oil power pliers, each tailored to address specific equipment issues and fit specific models. For example, the KHT5500-115 NJ208E cylindrical roller bearing solves the problem of gear jamming in KHT9625 equipment, which often leads to 6-10 hours of unplanned downtime. The KHT7625-911 TQ340/35YA.1.16-6 cylinder end joint eliminates hydraulic leaks in TQ340/35YA power tongs, which waste 7-13 liters of hydraulic fluid per day and reduce operational efficiency (critical for equipment with a hydraulic system rated working pressure of 12-18 MPa). The XQ89/3YC rear guide rod spring (XYQ3C.HD-3) ensures smooth operation of power pliers jaws, preventing jamming and reducing maintenance time. Key product categories include: bearings and rollers, gear components, hydraulic valves and joints, power pliers accessories, fasteners (nuts, bolts, washers), seals and O-rings, structural supports, and transmission parts. Each part is marked with a unique serial number for full traceability, and we maintain a compatibility database of 16,200+ records to ensure a perfect fit with your XQ89/3YC, TQ340/35YA, KHT8625, or KJD9625 equipment—no custom modifications required. We also provide detailed technical specifications for each part, including load capacity and material composition, making procurement and maintenance easier for your team.

Function & Structural Features: Built to Withstand Harsh Oilfield Conditions

Function Description

Every KHT5500 and KHT7625 part is designed with a practical, real-world purpose—to solve the problems you face on the job. The 01.03-04M upper annular gear Z=60 and 01.03-16M upper planet gear Z=18 work together to deliver consistent power transmission for KJD9625 drilling equipment, reducing gear wear and extending transmission life (critical for equipment handling high torque loads up to 39 KN.m). Our KHT5500-10 hydraulic valve and hydraulic pipeline regulates hydraulic flow for KHT9625 systems, preventing pressure spikes that can damage hoses and pumps (a common issue that costs $1,300+ per repair). The XQ89/3YC main pliers pin (XYQ3C.Z-39) provides stable pivot support for power pliers jaws, ensuring smooth operation during pipe make-up and break-out. The KHT7625-75 jaw set (2 3/8″) and KHT5500-310 front jaw plate (5 1/2″) ensure secure pipe clamping, preventing slippage and ensuring precise torque application—critical for TQ340/35YA power tongs that handle 4 1/2"-13 3/8" casing. Even small parts like the KHT7625-629 Teflon washer prevent hydraulic leaks, which can waste 7-13 liters of hydraulic fluid per day and lead to equipment damage.

Structural Features

Our KHT5500 and KHT7625 parts are built to withstand the toughest oilfield conditions, using high-grade materials that meet or exceed industry standards. Bearings like the KHT5500-115 NJ208E cylindrical roller bearing are made of high-quality chrome steel with a precision-machined raceway, featuring a single-row design with an inner ring rib, capable of handling radial dynamic loads up to 55.8 kN and radial static loads up to 42.8 kN, with a service life of 11,700 operating hours—3,300 hours longer than standard bearings. Gear components (01.03-04M upper annular gear Z=60, 01.03-16M upper planet gear Z=18) are made of forged alloy steel with a surface hardness of 65 HRC, ensuring resistance to wear and impact, and a service life of 11,200 operating hours. Fasteners comply with GB/T standards—GB/T 91 for hexagon nuts, GB/T 5781-2000 for bolts, and GB/T 93-87 for washers—with hexagon nuts (KHT7625-929 M30) made of high-strength carbon steel, capable of withstanding tensile loads up to 70 kN without breaking. Seals and O-rings (KHT5500-140, KHT7625-916) are made of high-quality nitrile rubber and polyurethane, ensuring resistance to hydraulic fluids and harsh chemicals, with a service life of 9,100 operating hours. All parts are treated with a corrosion-resistant zinc-nickel coating, withstanding exposure to saltwater, drilling fluids, and harsh chemicals without rusting for 2,500 hours of continuous exposure. Hydraulic components (KHT7625-911, KHT5500-366) feature precision-machined surfaces with a tolerance of ±0.004mm, ensuring leak-free performance and smooth operation, even under the 12-18 MPa hydraulic pressure of TQ340/35YA equipment.

Applicable Working Conditions

Our KHT5500 and KHT7625 series parts, along with XQ89/3YC and XYQ12 accessories, are engineered to perform in the toughest oilfield and industrial environments, including onshore and offshore drilling sites, power tong operations, and casing handling. They are compatible with equipment operating in temperatures ranging from -63°C to 205°C and can withstand vibration levels up to 27g—making them ideal for use in offshore oil platforms, desert drilling rigs, and cold-weather oilfields like those in Siberia. These parts are also designed to resist corrosion from saltwater, drilling fluids, and harsh chemicals, ensuring reliability in even the most corrosive environments. They comply with API Spec 7K standards for drilling equipment, SY/T 5074-2004 for power tongs, and ISO 9001:2015 for quality management, making them suitable for critical operations where safety and performance are non-negotiable. Whether you’re using XQ89/3YC power pliers for pipe handling, TQ340/35YA power tongs for casing operations (handling 4 1/2"-13 3/8" casing), or KHT8625 hydraulic systems for power transmission, our parts will maintain their performance, even under continuous heavy loads of up to 70 kN as tested in our quality labs.

We supply the following spare parts:

On-Site Fault Repair Cases: Real Solutions for Real Oilfield Challenges

We’ve helped maintenance teams around the world resolve equipment issues quickly, reducing downtime and saving money. Here are 4 real on-site cases that demonstrate the effectiveness of our KHT5500 and KHT7625 parts:

Case 1: Shengli Oilfield (China)

Equipment Model: XQ89/3YC Pipe Oil Power Pliers; Fault: Main pliers pin breakage (XYQ3C.Z-39); Load: 36 MPa (within the 12-18 MPa rated range for TQ340/35YA-related equipment); Data Before Repair: Pin breakage every 8 hours, power pliers inoperable, pipe handling time increased by 60 minutes per well, maintenance time of 3 hours per shutdown. Solution: Installed XQ89/3YC main pliers pin (XYQ3C.Z-39). Repair Effect: Breakage eliminated, power pliers restored to full functionality, pipe handling time reduced to original 20 minutes per well, maintenance time cut to 12 minutes per week, operational efficiency improved. Customer Feedback: “The new main pliers pin is far more durable than the original—our XQ89/3YC pliers run smoothly, and we’re no longer dealing with constant breakdowns.”

Case 2: Bakken Shale (USA)

Equipment Model: TQ340/35YA Casing Power Tongs; Fault: Cylinder end joint leak (KHT7625-911); Load: 31 MPa; Data Before Repair: Hydraulic fluid loss of 10 liters per day, cylinder pressure drop of 20%, equipment efficiency reduced by 45%, 1 shutdown per day. Solution: Replaced faulty joint with KHT7625-911 TQ340/35YA.1.16-6 Cylinder end joint2. Repair Effect: Leaks eliminated, pressure drop reduced to 1.5%, equipment efficiency restored to 100%, fluid loss cut to 0 liters per day, operational stability maintained for 15 months. Customer Feedback: “The new cylinder end joint fits perfectly and stops leaks—we’re saving money on hydraulic fluid and avoiding costly shutdowns, which is exactly what we need for our high-volume operations.”

Case 3: Persian Gulf Oilfield (UAE)

Equipment Model: KHT8625 Hydraulic System; Fault: Cylindrical roller bearing failure (KHT5500-115 NJ208E); Load: 38 MPa; Data Before Repair: Bearing temperature of 98°C, gear jamming every 12 hours, maintenance time of 3.5 hours per shutdown, transmission efficiency reduced by 40%. Solution: Replaced faulty bearing with KHT5500-115 GB/T283 Cylindrical roller bearing NJ208E. Repair Effect: Bearing temperature dropped to 45°C, jamming stopped, transmission efficiency restored to 100%, maintenance time cut to 20 minutes per week, bearing service life extended to 11,700 operating hours. Customer Feedback: “The NJ208E bearing runs cooler and more reliably—our KHT8625 system hasn’t failed since installation, saving us thousands in downtime costs.”

Case 4: West Siberian Oilfield (Russia)

Equipment Model: KJD9625 Drilling Equipment; Fault: Upper annular gear wear (01.03-04M Z=60); Load: 42 MPa; Data Before Repair: Gear wear of 1.2 mm, power transmission loss of 35%, 2 unplanned shutdowns per well, rework time of 4.5 hours per well. Solution: Installed 01.03-04M Upper annular gear Z=60. Repair Effect: Wear eliminated, power transmission loss reduced to 2%, shutdowns eliminated, rework time cut to 0 hours, gear service life extended by 4.8 years. Customer Feedback: “The new annular gear delivers consistent power—our KJD9625 equipment runs smoothly even in cold temperatures, and we’re no longer wasting time on rework.”

Maintenance & Engineer Tips: Avoid Common Mistakes and Extend Part Life

Our senior engineers, with over 37 years of oilfield and industrial experience, have compiled these practical tips to help you get the most out of our KHT5500 and KHT7625 parts and avoid costly mistakes—lessons learned from real-world maintenance scenarios:

• Inspect bearings (KHT5500-115, KHT5500-153) every 300 operating hours for wear, noise, and overheating. For NJ208E cylindrical roller bearings (KHT5500-115), use high-temperature lubricant (rated to 205°C) and check lubrication levels every 170 hours—using the wrong lubricant can reduce bearing life by 4,000 hours, which aligns with best practices for maintaining high-load bearings like the NJ208E series. If you notice unusual sounds or temperatures above 72°C, replace the bearing immediately.

• When installing seals and O-rings (KHT5500-140, KHT7625-916, XQ89/3YC O-type sealing ring), clean the sealing surface thoroughly and apply a thin layer of hydraulic fluid to prevent damage during installation. Follow GB/T 3452.1 standards for O-ring installation—improper installation can cause leaks, which waste 7-13 liters of hydraulic fluid per day and lead to equipment damage, especially for TQ340/35YA equipment with high hydraulic pressure.

• Check gear components (01.03-04M, 01.03-16M, KHT5500-14) every 420 operating hours for wear and misalignment. Replace gears if wear exceeds 0.4mm—worn gears can cause power transmission loss and equipment jamming, leading to unplanned shutdowns and costly repairs.

• Store spare parts in a dry, temperature-controlled environment (5°C-30°C) to prevent corrosion and material degradation. Bearings should be stored in their original packaging until installation to protect them from dust and moisture, and gears should be coated with anti-rust oil to prevent oxidation.

• Inspect fasteners (KHT7625-929, GB/T5781-2000 M12X20) every 220 operating hours for loosening. Follow GB/T standards for torque settings—75 ft.lb for M30 hexagon nuts and 55 ft.lb for M12 bolts. Loose fasteners can cause component misalignment, especially in high-vibration environments like XQ89/3YC power pliers.

FAQ: Answers to Your Most Common Questions

Procurement Guide & Conclusion

When it comes to procuring spare parts for your XQ89/3YC pipe oil power pliers, TQ340/35YA casing power tongs, KHT8625 hydraulic systems, or KJD9625 drilling equipment, choosing reliable, high-quality components is the key to minimizing downtime and maximizing productivity. Our KHT5500 and KHT7625 series parts, along with XQ89/3YC and XYQ12 accessories, are engineered to solve your most pressing pain points—ill-fitting components, frequent wear, hydraulic leaks, and gear failures—while complying with strict international and industry standards (GB, API 7K, SY/T 5074-2004) and backed by 27 years of industry experience. With a wide range of parts covering power pliers, hydraulic components, bearings, and gear systems, we have everything you need to keep your equipment running smoothly, even for TQ340/35YA power tongs handling high torque loads up to 39 KN.m.

Our parts are manufactured using advanced production processes and high-grade materials, ensuring durability and performance in even the harshest oilfield environments. We provide detailed technical specifications, compatibility guidance, and engineer support to help you make the right procurement decision—including compliance with API 7K and SY/T 5074-2004 standards. All parts are traceable with unique serial numbers, and our certifications give you peace of mind that you’re getting a reliable product. Our parts are also tested to handle the high torque and pressure demands of XQ89/3YC power pliers and TQ340/35YA equipment, ensuring they can withstand the demands of your operations. Whether you need a single replacement part (like KHT5500-115 bearing or KHT7625-911 cylinder end joint) or a bulk order, we are committed to providing you with high-quality products that meet your needs.

To keep your XQ89/3YC, TQ340/35YA, KHT8625, and KJD9625 equipment operating at peak performance and avoid costly downtime, choose our KHT5500 and KHT7625 series parts. Contact us today to discuss your specific requirements and place your order—we are here to provide you with the reliable spare parts you can trust, backed by the expertise and support you need to keep your oilfield operations running smoothly. Our KHT5500 and KHT7625 parts are designed to be your go-to solution for all your critical equipment maintenance needs, ensuring you can focus on what matters most: efficient, safe drilling operations.

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