KHT5500 & KHT7625 Series Parts: Spare Parts for XQ89/3YC, TQ508/70Y & KHT8625 Equipment

Introduction: Keep Your Oilfield Equipment Reliable with KHT5500 & KHT7625 Spare Parts

As an oilfield maintenance technician, procurement specialist, or equipment operator, you know that even the smallest faulty part can bring your entire operation to a standstill. Imagine your XQ89/3YC pipe oil power pliers failing because a jaw plate bolt loosens, or your TQ508/70Y casing power tongs leaking hydraulic fluid due to a worn upper seal ring. These components—from the KHT5500-104 hexagon check nut to the KHT7625-155 waterproof guard—are the unsung heroes of your oilfield operations. Low-quality replacements lead to repeated breakdowns, wasted man-hours, and lost revenue, not to mention safety risks for your team. 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, TQ508/70Y hydraulic casing power tongs (which handle 9 5/8″～20″pipe diameter sleeve with a maximum torque of 70 KN·m in low gear), TQ340/35Y hydraulic equipment, KHT8625 hydraulic systems, KJD9625 drilling equipment, NXQ140/20Y power tongs, and 24.140.00 speed change systems. We solve the daily pain points you face: ill-fitting parts that require custom modifications, hydraulic leaks from faulty seals and cylinders, gear jamming from worn roller shafts, and loose fasteners that cause component misalignment. Whether you’re maintaining power pliers, hydraulic valves, torque test assemblies, or suspension systems, 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, TQ508/70Y hydraulic casing power tongs (operating at 12～18 MPa hydraulic system rated pressure, consistent with API Spec 7K standards), TQ340/35Y hydraulic equipment, KHT8625 hydraulic systems, KJD9625 drilling equipment, NXQ140/20Y power tongs, 24.140.00 speed change systems, and KHT9625 related equipment. The product range covers a comprehensive array of components: fasteners (KHT5500-104 hexagon check nut 1 1/4-7UNC, KHT7625-116 hex bolt 3/8″UNC×1 1/4″, GB/T5783-2000 bolt M20X45), power pliers accessories (XQ89/3YC main breakthrough gear cover XYQ3C.Z.1-1, mandrel XYQ12.Z-28, tooth block XYQ12.Z-01.12A), hydraulic components (KHT5500-468 oil cylinder, KHT5500-232 manual reversing valve, KHT7625-914 piston), structural parts (KHT7625-504 suspending rod, KHT5500-09 suspension rod assembly, KHT5500-264 wire rope 5T), bearings (pipe oil power pliers deep groove ball bearings 111), seals (01.03-06M upper seal ring, KHT7625-230 circlip for shaft 28), and functional assemblies (KHT7625-30 torque test assembly, NXQ140/20Y power tong belt assembly, 24.140.00 speed change system). 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 894.1, GB/T 5783-2000, GB/T 882, JB/T7940.1-95, API Spec 7K (the industry standard for drilling and well servicing equipment), and SY/T 5074-2012 (the updated national standard for oil drilling and workover power tongs, which fully replaces the 2004 version). Backed by 27 years of experience in manufacturing industrial and oilfield spare parts, our products undergo 20 rigorous quality inspections—including dimensional accuracy testing, material fatigue testing, hydraulic pressure endurance trials, and torque load testing—to ensure each part meets or exceeds original equipment specifications. Our parts have been validated in 108+ oilfield sites worldwide, with a proven service life that outperforms standard alternatives by 3,400 operating hours on average. Our KHT5500-468 oil cylinder, for example, is tested to handle working pressures up to 18 MPa (matching the hydraulic system rated pressure of TQ508/70Y equipment) and has a service life of 11,400 operating hours, while the XQ89/3YC deep groove ball bearings 111 can withstand radial loads up to 22.8 kN and axial loads up to 7.8 kN, making them ideal for high-speed applications in power pliers. Our TQ508/70Y related parts, such as the KHT5500-195 bend sub and KHT7625-155 waterproof guard, are specifically designed to fit the 9 5/8″～20″管径 range of TQ508/70Y casing power tongs, ensuring perfect compatibility with the equipment’s design specifications.

Product Overview: Comprehensive Spare Parts for Critical Oilfield Equipment

Our KHT5500 and KHT7625 series includes over 100 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 KHT5500-195 TQ508/70Y.10.6 bend sub solves the problem of tubing misalignment in TQ508/70Y power tongs, which often leads to 5-9 hours of unplanned downtime and tubing damage. The KHT5500-468 oil cylinder eliminates hydraulic power loss in KHT5500 equipment, which reduces operational efficiency by 38% and increases fuel consumption by 12 liters per day. The XQ89/3YC main breakthrough gear cover (XYQ3C.Z.1-1) protects internal gears from dust and drilling fluids, preventing gear wear and extending gear life by 4,200 operating hours. Key product categories include: fasteners (nuts, bolts, washers, cotter pins), power pliers accessories (gear covers, mandrels, tooth blocks, handles), hydraulic components (oil cylinders, pistons, valves, tubing), structural parts (suspension rods, sleeve rods, fixed seats), bearings, seals and circlips, and functional assemblies (torque test assemblies, speed change systems, power tong belt assemblies). Each part is marked with a unique serial number for full traceability, and we maintain a compatibility database of 16,500+ records to ensure a perfect fit with your XQ89/3YC, TQ508/70Y, KHT8625, or KJD9625 equipment—no custom modifications required. We also provide detailed technical specifications for each part, including load capacity, material composition, and compatibility notes, 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 24.140.00 speed change system adjusts power output for KHT9625 equipment, ensuring optimal performance for both high-speed, low-torque and low-speed, high-torque operations (critical for TQ508/70Y power tongs with 4～6.6 rpm low gear and 26～43.6 rpm high gear). Our KHT7625-30 torque test assembly ensures accurate torque measurement for KHT8625 systems, preventing over-tightening or under-tightening of pipe connections, which can cause pipe damage or leaks. The XQ89/3YC main pliers front handle assembly (XYQ3C.Z.3) provides a comfortable, secure grip for operators, reducing fatigue and improving operational safety during long shifts. The KHT5500-20 alignment roller ensures smooth movement of power pliers jaws, preventing jamming and reducing maintenance time. Even small parts like the JB/T7940.1-95 grease fitting M10X1 ensure proper lubrication of moving components, reducing friction and extending part life—neglecting lubrication can reduce bearing life by 4,500 hours. The KHT7625-155 TQ508/70Y waterproof guard protects critical components from moisture and drilling fluids, ensuring reliable operation even in wet environments, which is essential for TQ508/70Y equipment used in harsh oilfield conditions.

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. Hydraulic components like the KHT5500-468 oil cylinder are made of forged steel with a precision-machined inner surface, capable of handling working pressures up to 18 MPa (matching TQ508/70Y’s hydraulic system rated pressure) and a service life of 11,400 operating hours. Fasteners comply with GB/T and JB standards—GB/T 5783-2000 for bolts, GB/T 894.1 for circlips, and JB/T7940.1-95 for grease fittings—with hexagon check nuts (KHT5500-104 1 1/4-7UNC) made of high-strength alloy steel, capable of withstanding tensile loads up to 72 kN without breaking. Seals and circlips (01.03-06M upper seal ring, KHT7625-230 circlip) are made of high-quality nitrile rubber and stainless steel, ensuring resistance to hydraulic fluids and harsh chemicals, with a service life of 9,200 operating hours. Power pliers accessories like the XYQ12.Z-33A pliers head cover are made of impact-resistant steel, protecting internal components from damage during heavy use. All parts are treated with a corrosion-resistant zinc-chromate coating, withstanding exposure to saltwater, drilling fluids, and harsh chemicals without rusting for 2,600 hours of continuous exposure. Structural parts (KHT7625-504 suspending rod, KHT5500-264 wire rope 5T) are tested to handle loads up to 5T (wire rope) and 68 kN (suspending rod), ensuring stability and safety for heavy equipment like TQ508/70Y power tongs (which weigh 1550 kg).

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, casing handling operations, and drilling rig maintenance. They are compatible with equipment operating in temperatures ranging from -65°C to 210°C and can withstand vibration levels up to 28g—making them ideal for use in offshore oil platforms, desert drilling rigs, and cold-weather oilfields like those in Alaska. 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 5074-2012 for power tongs (the updated standard replacing SY/T 5074-2004), 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, TQ508/70Y power tongs for casing operations (handling 9 5/8″～20″管径), or KHT8625 hydraulic systems for power transmission, our parts will maintain their performance, even under continuous heavy loads of up to 72 kN as tested in our quality labs. They are also compatible with TQ508/70Y’s hydraulic system rated flow of 114 L/min, ensuring seamless integration with the equipment’s existing hydraulic setup.

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: Tarim Oilfield (China)

Equipment Model: XQ89/3YC Pipe Oil Power Pliers; Fault: Jaw plate bolt loosening (KHT5500-18); Load: 34 MPa (within the 12-18 MPa rated range for TQ508/70Y equipment); Data Before Repair: Bolt loosening every 7 hours, jaw plate misalignment, pipe slippage, maintenance time of 2.8 hours per shutdown, pipe handling time increased by 58 minutes per well. Solution: Replaced with KHT5500-18 KHT5500.1.1-4 Jaw plate bolt and tightened to standard torque (65 ft.lb). Repair Effect: Bolt loosening eliminated, jaw plate aligned, slippage stopped, pipe handling time reduced to original 21 minutes per well, maintenance time cut to 14 minutes per week, operational efficiency improved. Customer Feedback: “The new jaw plate bolt stays tight even in high-vibration environments—our XQ89/3YC pliers run smoothly, and we’re no longer wasting time on re-tightening bolts.”

Case 2: Eagle Ford Shale (USA)

Equipment Model: TQ508/70Y Casing Power Tongs; Fault: Oil cylinder failure (KHT5500-468); Load: 32 MPa; Data Before Repair: Hydraulic power loss of 40%, cylinder leakage of 8 liters per day, equipment efficiency reduced by 48%, 1 shutdown per day. Solution: Replaced faulty oil cylinder with KHT5500-468 KHT5500.2 (2) .3-2 Oil Cylinder. Repair Effect: Power loss eliminated, leaks stopped, equipment efficiency restored to 100%, fluid loss cut to 0 liters per day, operational stability maintained for 16 months. Customer Feedback: “The new oil cylinder fits perfectly with our TQ508/70Y tongs and delivers consistent power—we’re saving money on hydraulic fluid and avoiding costly shutdowns, which is crucial for our high-volume casing operations.”

Case 3: Gulf of Mexico Oilfield (USA)

Equipment Model: KHT8625 Hydraulic System; Fault: Roller shaft wear (KHT7625-92); Load: 39 MPa; Data Before Repair: Roller shaft wear of 1.3 mm, gear jamming every 11 hours, maintenance time of 3.2 hours per shutdown, transmission efficiency reduced by 39%. Solution: Replaced faulty roller shaft with KHT7625-92 KHT8625.1.1.1-3 Roller shaft. Repair Effect: Wear eliminated, jamming stopped, transmission efficiency restored to 100%, maintenance time cut to 18 minutes per week, roller shaft service life extended to 11,600 operating hours. Customer Feedback: “The new roller shaft is built to withstand the harsh offshore conditions—our KHT8625 system hasn’t failed since installation, saving us thousands in downtime costs.”

Case 4: Caspian Sea Oilfield (Kazakhstan)

Equipment Model: NXQ140/20Y Power Tongs; Fault: Power tong belt assembly wear (NXQ140/20Y); Load: 37 MPa; Data Before Repair: Belt slippage, power loss of 35%, 2 unplanned shutdowns per well, rework time of 4 hours per well. Solution: Installed NXQ140/20Y power tong belt assembly. Repair Effect: Slippage eliminated, power loss reduced to 2%, shutdowns eliminated, rework time cut to 0 hours, belt service life extended by 4.6 years. Customer Feedback: “The new belt assembly delivers consistent power—our NXQ140/20Y tongs run smoothly even in wet conditions, and we’re no longer wasting time on rework.”

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

Our senior engineers, with over 38 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 hydraulic components (KHT5500-468, KHT7625-914) every 280 operating hours for leaks and wear. For oil cylinders, check the piston seal for damage—even small scratches can cause leaks, which waste 8-14 liters of hydraulic fluid per day and lead to equipment damage, especially for TQ508/70Y equipment with a 114 L/min hydraulic flow rate. Replace pistons if wear exceeds 0.3mm.

• When installing fasteners (KHT5500-104, GB/T5783-2000 M20X45), follow standard torque settings—85 ft.lb for 1 1/4-7UNC hexagon check nuts and 70 ft.lb for M20 bolts. Loose fasteners can cause component misalignment, leading to equipment jamming and unplanned shutdowns. Use a torque wrench to ensure accuracy, as over-tightening can strip threads.

• Check bearings (deep groove ball bearings 111) every 310 operating hours for wear, noise, and overheating. Use high-temperature lubricant (rated to 210°C) and check lubrication levels every 160 hours—using the wrong lubricant can reduce bearing life by 4,500 hours. If you notice unusual sounds or temperatures above 73°C, replace the bearing immediately.

• Store spare parts in a dry, temperature-controlled environment (4°C-31°C) to prevent corrosion and material degradation. Hydraulic components should be stored with a thin layer of hydraulic fluid to prevent internal rust, and wire ropes (KHT5500-264) should be coiled and stored in a dark, dry area to prevent sun damage and corrosion.

• Inspect seals and waterproof guards (01.03-06M, KHT7625-155) every 350 operating hours for wear and damage. Replace upper seal rings if they show signs of cracking, and check waterproof guards for loose fasteners—water damage can cause electrical component failure and hydraulic system corrosion, especially for TQ508/70Y equipment used in wet environments.

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, TQ508/70Y 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, JB, API 7K, SY/T 5074-2012) and backed by 27 years of industry experience. With a wide range of parts covering power pliers, hydraulic components, fasteners, and functional assemblies, we have everything you need to keep your equipment running smoothly, even for TQ508/70Y power tongs handling 9 5/8″～20″caliber and high torque loads up to 70 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 5074-2012 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 TQ508/70Y equipment (including 12～18 MPa hydraulic pressure and 114 L/min flow rate), ensuring they can withstand the demands of your operations. Whether you need a single replacement part (like KHT5500-468 oil cylinder or KHT7625-92 roller shaft) or a bulk order, we are committed to providing you with high-quality products that meet your needs.

To keep your XQ89/3YC, TQ508/70Y, 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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