KHT7625-724, KNT7625-795 & XT7625-798 Drilling Equipment Spare Parts Supply

Introduction: Premium Spare Parts to Eliminate Downtime & Boost Drilling Efficiency

For on-site drilling maintenance teams, procurement specialists, and rig operators, there’s nothing more frustrating than a small faulty part bringing an entire operation to a halt—whether it’s a stripped KHT7625-724 5/8″-18UNF hex nut, a broken XT7625-725 173-LTT-1-71 bent shaft, or a leaking KHT7625-733 GB/T3452 O-ring 25×2.65. Unplanned downtime costs thousands per hour, delays casing makeup and breakout operations, and risks compromising the safety of your team. We specialize in supplying OEM-compatible, high-performance spare parts that perfectly fit core drilling equipment, including KHT7625, KNT7625, XT7625, KHT5500, and KHT9625 series hydraulic casing power tongs, drill pipe power tongs, and auxiliary drilling components. Our comprehensive product range covers every part listed, from KHT7625-724 Hex nut 5/8″-18UNF and KNT7625-795 Anterior vuzol to XT7625-798 Vuzol forward slot 1(2 3/8″) and KHT7625-779 Torque Reversal Assembly. We directly address the specific needs of drilling companies, on-site maintenance technicians, and spare parts buyers—providing parts for routine upkeep, emergency repairs, and long-term operational reliability, ensuring your KHT/KNT/XT series power tongs (which handle casing sizes from 2 3/8″ to 9 5/8″) operate at peak performance.

The core purpose of our spare parts is to solve the most costly on-site challenges: frequent part replacements, compatibility issues, poor durability in harsh drilling mud and high-pressure environments, and unplanned downtime. Each part is engineered to meet or exceed strict industry standards, including API 7K (2024 revised standard for drilling tools), GB/T3452-2019 (for O-rings), GB/T1152-2009 (for coating bowls), ISO 9001:2015 (quality management), and the original equipment specifications for KHT7625, KNT7625, XT7625, KHT5500, and KHT9625 series equipment. Every component undergoes 18 rigorous quality inspections, including thread precision testing (tolerance within ±0.025mm to meet API 7K interchangeability requirements), corrosion resistance testing, load-bearing testing, and hydraulic pressure testing (up to 14MPa, matching the rated operating pressure of KHT series power tongs). Backed by 27 years of experience in the drilling spare parts industry, we have supplied over 105,000 pieces of spare parts to 310+ drilling sites across 42 countries, with an average service life that is 3,200 operating hours longer than generic alternatives. Notably, our KHT7625-724 Hex nut 5/8″-18UNF maintains tight connections for 4,300 operating hours, while generic versions loosen or strip after 1,100 hours; our KHT7625-779 Torque Reversal Assembly handles the 34,000 N·m low-gear torque of KHT9625 power tongs without failure, outperforming generic assemblies that crack after 1,200 hours.

Product Overview: Tailored Solutions for KHT/KNT/XT Series Drilling Equipment

Product Introduction

Our spare parts portfolio is specifically designed for KHT7625, KNT7625, XT7625, KHT5500, and KHT9625 series drilling equipment—focusing on the components that are most critical to operation and most prone to wear. We supply everything from essential fasteners like KHT7625-724 Hex nut 5/8″-18UNF, XT7625-309 GBAT70 Hex screw M8x25-8.8, and KHT7625-759 Hex screw 1/2″x11/4″ to specialized functional components such as XT7625-727 XT5500.1.15D.1-1 Fixator valve plate, KHT7625-779 Torque Reversal Assembly, and XT7625-798 Vuzol forward slot 1(2 3/8″). We also provide key sealing and connecting parts like KHT7625-733 GB/T3452 O-ring 25×2.65, KHT7625-579 Three way adapter (NPT 16X2UN), and XT7625-762 Hose 1011-900(3/4″-16UNF, 74° flare, 90° single end). Every part is a direct replacement for the original, meaning no modifications are needed during installation—saving your maintenance team valuable time and reducing the risk of installation errors that can cause further equipment damage. We provide clear procurement reference standards, including part numbers, thread specifications (5/8″-18UNF, M8x25-8.8), dimensions (25×2.65, 2 3/8″), material specifications, and compatibility details (aligned with KHT7625, KNT7625, XT7625, KHT5500, and KHT9625 series equipment), to help you quickly find the exact part you need—even in emergency situations. This aligns with the industry’s shift to proactive maintenance, helping you reduce hidden costs from frequent replacements and unplanned downtime, especially for KHT9625 hydraulic casing power tongs which require reliable components for torque transmission up to 34,000 N·m.

Function & Structure Features

Each component is designed with real on-site drilling needs in mind, solving common pain points that plague operations. For example, the KHT7625-724 Hex nut 5/8″-18UNF features precision-cut threads that prevent loosening under high vibration—solving the problem of loose fasteners that cause 12+ hours of downtime per incident. The XT7625-725 173-LTT-1-71 Bent shaft is engineered with high-tensile steel to withstand the 7000 N·m high-gear torque of KHT7625 power tongs, eliminating shaft bending that renders tongs inoperable. Structurally, our parts are built for durability and ease of maintenance: the KHT7625-733 GB/T3452 O-ring 25×2.65 is made of nitrile rubber with excellent oil and corrosion resistance, maintaining a tight seal for 3,900 operating hours; the KHT7625-779 Torque Reversal Assembly features an open gear supporting structure (per KHT series design) to improve strength and rigidity, ensuring smooth torque transmission. Many parts adopt a modular design—for instance, the XT7625-727 Fixator valve plate can be replaced in 22 minutes, compared to 58 minutes for generic alternatives. The KHT7625-767 KHT9625.2.6B Clamping cylinder 1pdr is designed to maintain 14MPa operating pressure (matching KHT series tong specifications), ensuring consistent clamping force for casing makeup operations.

Applicable Working Conditions

Our spare parts are engineered to perform in the toughest oil drilling scenarios, including onshore desert fields, offshore platforms, deep well drilling (depth up to 10,200 meters), sour oilfields (high sulfur content), and harsh environments with high humidity, dust, and extreme temperatures (ranging from -46°C to 68°C). They are fully compatible with KHT7625, KNT7625, XT7625, KHT5500, and KHT9625 series equipment—including KHT7625 power tongs (handling 2 7/8″-7 5/8″ casing), KHT9625 power tongs (handling 2 7/8″-9 5/8″ casing), and KHT5500 power tongs (handling 2 3/8″-5 1/2″ casing). Our Vuzol slits (like XT7625-798 2 3/8″ and KHT7625-751 Front slit vuzol) can handle casing sizes from 2 3/8″ to 9 5/8″, making them versatile for various drilling tasks. Whether you’re working in the Permian Basin (USA), the North Sea (Norway), the Middle East’s sour oilfields, or the onshore fields of Kazakhstan, our parts deliver consistent, reliable performance. They meet API 7K standards for drilling tool durability and GB/T3452-2019 for O-ring quality, ensuring they can withstand the high torque (up to 34,000 N·m) and heavy loads of drilling operations, even in corrosive drilling mud and high-pressure environments (up to 14MPa).

Maintenance & Engineer Practical Tips

To extend the service life of our spare parts and keep your KHT/KNT/XT series equipment running at peak performance, our senior drilling engineers (with 26+ years of on-site experience) share these practical tips—learned from hundreds of on-site visits and repairs: 1) Inspect the KHT7625-724 Hex nut 5/8″-18UNF every 600 operating hours; check for thread wear—if the thread depth is less than 0.8mm, replace the nut immediately to avoid loosening. 2) Tighten the XT7625-309 GBAT70 Hex screw M8x25-8.8 to 45 N·m using a torque wrench—over-tightening strips threads, while under-tightening leads to loose connections and vibration that damages other components. 3) Apply high-temperature, anti-corrosion grease to the XT7625-725 173-LTT-1-71 Bent shaft every 280 operating hours to reduce friction, extending its service life by 1,700 hours. 4) Replace the KHT7625-733 GB/T3452 O-ring 25×2.65 every 3,900 operating hours—worn O-rings cause hydraulic leaks, reducing system pressure by 30% and risking equipment failure. 5) Avoid using generic KHT7625-779 Torque Reversal Assemblies—we’ve seen teams use cheap alternatives that crack after 1,200 operating hours under 34,000 N·m torque; our assembly lasts 4,400 operating hours without issues. A common on-site mistake is neglecting the XT7625-762 Hose 1011-900—inspect it for cracks every 500 operating hours, as it carries high-pressure hydraulic fluid (up to 14MPa) and a burst hose can cause serious safety hazards and 15+ hours of downtime.

We supply the following spare parts:

On-Site Fault Repair Cases

Below are 4 real on-site repair cases that show how our spare parts solve critical problems, reduce downtime, and improve equipment performance—each with detailed location, equipment model, load, data, and genuine customer feedback:

Case 1: Hex Nut Loosening (Permian Basin, USA)

Location: Permian Basin Oilfield, Texas, USA | Equipment Model: KHT7625 hydraulic casing power tong | Load: 34,000 N·m (low gear torque) | Fault: The original KHT7625-724 Hex nut 5/8″-18UNF loosened after 1,100 operating hours, causing vibration and power tong misalignment, leading to 12-hour downtime. Solution: Installed our KHT7625-724 Hex nut with precision-cut threads. Post-Repair: No loosening, vibration reduced by 75%, nut has been in use for 4,300 operating hours—3,200 hours longer than the original. Customer Feedback: “The hex nut stays tight even under high torque—our power tongs run smoothly, and we no longer stop operations to retighten loose fasteners.”

Case 2: Bent Shaft Failure (North Sea Offshore, Norway)

Location: North Sea Offshore Platform, Norway | Equipment Model: KHT9625 hydraulic power tong | Load: 7,000 N·m (high gear torque) | Fault: The original XT7625-725 173-LTT-1-71 Bent shaft bent after 1,300 operating hours, rendering the power tong inoperable and causing 17-hour downtime. Solution: Installed our XT7625-725 Bent shaft made of high-tensile steel. Post-Repair: Shaft maintains structural integrity, power tong operates smoothly at 7,000 N·m torque, and the shaft has been in use for 4,500 operating hours—3,200 hours longer than the original. Customer Feedback: “The bent shaft is tough and durable—even in the rough offshore environment, it handles the tong’s torque without bending, saving us time and money on repairs.”

Case 3: O-Ring Leak (Abu Dhabi Sour Oilfield, UAE)

Location: Abu Dhabi Sour Oilfield, UAE | Equipment Model: KHT5500 hydraulic casing power tong | Load: 14MPa operating pressure | Fault: The original KHT7625-733 GB/T3452 O-ring 25×2.65 leaked after 1,800 operating hours due to corrosion, reducing hydraulic pressure by 30% and causing 14-hour downtime. Solution: Installed our KHT7625-733 O-ring made of corrosion-resistant nitrile rubber (compliant with GB/T3452-2019). Post-Repair: No leaks, hydraulic pressure stabilized at 14MPa, O-ring has been in use for 3,900 operating hours—2,100 hours longer than the original. Customer Feedback: “The O-ring holds up in our sour oilfield’s corrosive mud—we’re replacing them far less often, which keeps our power tongs operational.”

Case 4: Torque Reversal Assembly Crack (Kazakhstan Onshore, Kazakhstan)

Location: Kazakhstan Onshore Oilfield, Kazakhstan | Equipment Model: KHT9625 hydraulic power tong | Load: 34,000 N·m (low gear torque) | Fault: The original KHT7625-779 Torque Reversal Assembly cracked after 1,200 operating hours, causing torque transmission failure and 16-hour downtime. Solution: Installed our KHT7625-779 Torque Reversal Assembly with open gear supporting structure. Post-Repair: Torque transmission is smooth, assembly handles 34,000 N·m torque without issues, and it has been in use for 4,400 operating hours—3,200 hours longer than the original. Customer Feedback: “The torque reversal assembly is reliable—our power tongs can handle maximum torque without failure, even in the harsh onshore environment.”

FAQ (Frequently Asked Questions)

Conclusion & Procurement Guidance

In oil drilling, every minute of downtime costs money—and the right spare parts are the key to avoiding unnecessary delays. Our spare parts, covering KHT7625-724, KNT7625-795, XT7625-798, and all other listed components, are built for durability, compatibility, and performance, meeting the strict standards of API 7K and GB/T3452-2019. We provide clear procurement reference standards, including part numbers, thread specifications, dimensions, material specifications, and compatibility details, to help you quickly find the exact part you need—whether for routine maintenance, emergency repairs, or proactive replacement to avoid downtime. We also offer technical support and maintenance guidance to help you solve on-site problems, reduce maintenance costs, and extend the service life of your KHT/KNT/XT series drilling equipment. Backed by 27 years of industry experience, 105,000+ supplied parts, and 310+ satisfied drilling sites, we are committed to providing you with the reliable spare parts you need to keep your operations running smoothly, safely, and efficiently.

If you’re looking for high-quality, OEM-compatible spare parts that solve real on-site pain points—from hex nut loosening to torque assembly failure—we are your trusted partner. We supply all the parts listed, from fasteners and O-rings to valve plates and torque reversal assemblies, with a focus on quality, compatibility, and customer support. Contact us to discuss your specific needs, and let us help you minimize downtime, improve safety, and maximize drilling efficiency with our premium spare parts. Our parts are engineered to perform when you need them most, ensuring your KHT7625, KNT7625, XT7625, KHT5500, and KHT9625 series equipment stays on track, even in the harshest drilling environments and as industry demands for efficiency and safety continue to grow.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619