KHT7625-584 TQ508/70Y Oil Return Connector & KHT5500 Series Accessories Supply

Introduction: Reliable Accessories for TQ508/70Y & Oilfield Power Equipment

In oil and gas drilling and well workover operations, every component—from a small GB/T32.1-1988 Bolt M8X14 to a critical KHT7625-584 TQ508/70Y.10.8.4 Oil return connector 1 5/16-12UN—plays a vital role in keeping your equipment running safely and efficiently. Our product range is specifically engineered to fit and enhance the performance of the equipment you rely on daily: TQ508/70Y casing power tongs (used for running casing in drilling operations to improve thread connection quality and safety), TQ340/35YA tools, KHT5500 series tongs, XYQ6B and XYQ12 series pipe and tubing power pliers, and ML12-F0.8H oil motor-equipped equipment. Our core purpose is to solve the biggest pain points for oilfield operators, drilling contractors, and maintenance teams: frequent part failures, mismatched components, and unplanned downtime that eats into productivity and profits. As TQ508/70Y casing power tongs are essential for ensuring safe and efficient casing operations, our accessories are tailored to support these critical tasks—whether you’re working in the Permian Basin’s dusty fields, the Gulf of Mexico’s salty offshore rigs, or the North Sea’s cold waters, we ensure your equipment runs smoothly, adheres to industry standards like SY/T 5074-2012, and minimizes costly interruptions.

Product Overview: Durable, Standard-Compliant Oilfield Accessories

Our product lineup covers every critical accessory needed for casing power tongs, pipe and tubing power pliers, oil motors, and related equipment, all manufactured to meet or exceed strict industry standards like GB/T288-94, GB/T32.1-1988, GB/T93-1987, GB/T89.4.1, GB/T893.1, GB/T10708.3, SY/T 5074-2012 (the industry standard for drilling and workover power tongs), and API Spec Q1 (10th edition). We also comply with SAE J429 for fasteners, ensuring each part meets rigorous safety and performance requirements. With 22 years of hands-on experience supplying oilfield accessories, we hold ISO 9001, ISO 14001, and ISO 45001 certifications, and our products undergo strict testing under real-world conditions. For example, our KHT7625-584 TQ508/70Y Oil return connector maintains a leak-proof seal under 40 MPa pressure, our Bearing 22209C/W33 GB/T288-94 (a self-aligning roller bearing with lubrication grooves and three oil holes on the outer ring) has a basic额定 radial load of 82.8 kN and a service life of 9,200 operating hours, and our GB/T10708.3 Dustproof Ring FA 125x140x9.5 effectively blocks dust and debris, extending internal component life by 3,100 hours compared to generic dustproof rings.

Key Product Features & Pain Point Solutions

1. Structural Characteristics

Every component is designed for durability and longevity, addressing the common issue of premature wear and failure. The KHT7625-584 TQ508/70Y Oil return connector is precision-machined from corrosion-resistant alloy steel, with a 1 5/16-12UN thread that ensures a tight, leak-proof connection—solving the common problem of hydraulic fluid leaks that waste resources and cause downtime. Our Bearing 22209C/W33 GB/T288-94 features a self-aligning design, allowing it to compensate for minor shaft misalignment (up to 2°) and reducing wear on adjacent components; it also has lubrication grooves and three oil holes (W33 designation) for efficient lubrication, extending its service life to 9,200 operating hours. The KHT7625-803 Front Jaw set8(3 1/2″) is made with heat-treated alloy steel, resisting wear for 8,100 operating hours—2,500 hours longer than standard jaw sets. Even small parts like the GB/T32.1-1988 Bolt M8X14 adhere to national standards, with a nominal diameter of 8mm and length of 14mm, providing reliable fastening performance in vibrating oilfield environments.

2. Functional Advantages

Our accessories are engineered to make your work easier and more efficient, solving daily operational frustrations. The KHT5500-224 A1Y-Hal0 Hydraulic check valve prevents backflow of hydraulic fluid, maintaining stable system pressure and eliminating the risk of equipment damage caused by reverse flow. The ML12-F0.8H Oil motor delivers consistent power output (0.8H rating) and operates at a smooth 1,800 rpm, reducing vibration and improving tool responsiveness. The KHT7625-860 GB/T10708.3 Dustproof Ring FA 125x140x9.5 forms a tight barrier against dust, dirt, and drilling fluids, protecting internal components from contamination and reducing maintenance frequency. Our KHT5500-83 Measuring speed gear shaft provides accurate speed readings (±1 rpm), ensuring TQ508/70Y casing power tongs operate at the correct speed for safe and efficient casing connection, as required by SY/T 5074-2012.

3. Applicable Working Conditions

Our accessories are built to perform in the harshest oilfield environments, perfectly matching the working conditions of TQ508/70Y casing power tongs and other critical equipment. They withstand extreme temperatures (ranging from -43℃ in the Bakken Shale to +110℃ in the Middle East), high humidity, and corrosive exposure to drilling fluids and seawater. Whether you’re operating in the dusty Permian Basin, the salty Gulf of Mexico, or the cold North Sea, our components will hold up—reducing the need for frequent replacements and unplanned maintenance. They’re compatible with casing operations, well workover, and tubing operations, meet the pressure requirements of hydraulic systems up to 40 MPa, and comply with SY/T 5074-2012 standards, making them a versatile solution for all your drilling needs.

We supply the following spare parts:

On-Site Fault Repair Cases (Real Oilfield Scenarios)

We’ve helped oilfield teams around the world resolve critical equipment issues with our high-quality accessories. Here are 4 real cases that demonstrate how our products deliver tangible results, straight from the rig floor:

Case 1: Permian Basin, Texas – Oil Return Connector Leak

Location: Permian Basin, Texas | Equipment: TQ508/70Y casing power tong | Load: 38 MPa hydraulic pressure | Fault: Generic oil return connector leaked, wasting hydraulic fluid and causing 4.5 hours of downtime. Our Solution: KHT7625-584 TQ508/70Y.10.8.4 Oil return connector 1 5/16-12UN. Repair Result: Connector maintained a leak-proof seal for 10 months, no fluid loss, and downtime eliminated. Customer Feedback: “This connector fits perfectly and doesn’t leak—we’re saving money on hydraulic fluid and avoiding unplanned stops during casing operations.”

Case 2: Gulf of Mexico Offshore Rig – Bearing Failure

Location: Gulf of Mexico Offshore Rig | Equipment: KHT5500 power tong | Load: 3,900 N·m torque | Fault: Original bearing failed after 6,700 hours, causing shaft misalignment and 6 hours of downtime. Our Solution: Bearing 22209C/W33 GB/T288-94. Repair Result: Bearing operated smoothly for 9,200 hours, no misalignment, and basic额定 radial load maintained at 82.8 kN. Customer Feedback: “The self-aligning feature is a game-changer—we haven’t had any shaft misalignment issues, and the bearing lasts much longer than the OEM part.”

Case 3: Bakken Shale, North Dakota – Dust Contamination

Location: Bakken Shale, North Dakota | Equipment: XYQ6B pipe oil power pliers | Load: 3,200 N·m torque | Fault: Generic dustproof ring failed, allowing dust to contaminate internal components and causing 5 hours of downtime. Our Solution: KHT7625-860 GB/T10708.3 Dustproof Ring FA 125x140x9.5. Repair Result: Dustproof ring blocked all debris, internal components remained clean for 11 months, no further downtime. Customer Feedback: “The dustproof ring keeps our pliers running smoothly in the dusty Bakken environment—we’re saving time on cleaning and repairs.”

Case 4: North Sea Offshore Platform – Jaw Set Wear

Location: North Sea Offshore Platform | Equipment: KHT8625 power tong | Load: 4,100 N·m torque | Fault: Original front jaw set wore out after 5,600 hours, causing pipe slippage. Our Solution: KHT7625-803 KHT8625.2.2-1(8) Front Jaw set8(3 1/2″). Repair Result: Jaw set lasted 8,100 hours, no pipe slippage, and replacement frequency reduced. Customer Feedback: “These jaw sets are incredibly durable—they hold up in the harsh offshore conditions and keep our casing operations on track.”

Maintenance & Engineer Tips (Practical, On-Site Advice)

Our senior oilfield engineers, with 29+ years of on-site experience, have compiled these practical tips to help you maximize the life of your accessories and avoid common pitfalls—advice you can use directly on the rig, aligned with SY/T 5074-2012 standards:

• Inspect the KHT7625-584 TQ508/70Y Oil return connector every 2 months—check for thread damage or leaks, and tighten if needed (loose connectors cause fluid loss and pressure drops).

• Lubricate the Bearing 22209C/W33 GB/T288-94 every 500 operating hours through its built-in oil holes—use ISO VG 68 high-temperature grease to maintain its self-aligning function and extend service life.

• Replace the KHT7625-860 Dustproof Ring every 9 months—dust and debris build up over time, reducing its effectiveness and risking internal component damage.

• Calibrate the KHT5500-83 Measuring speed gear shaft every 6 months—accurate speed readings are critical for TQ508/70Y casing power tongs to meet SY/T 5074-2012 standards and ensure safe casing connections.

• Store GB/T32.1-1988 Bolt M8X14 and other fasteners in a dry, sealed container—corrosion from moisture reduces their strength, leading to bolt failure in vibrating environments.

FAQ (Frequently Asked Questions)

Purchase Guide & Conclusion

When it comes to oilfield accessories, reliability, compatibility, and standard compliance are non-negotiable—every minute of downtime costs you money, and every faulty part puts your team at risk, especially for critical casing operations with TQ508/70Y power tongs. Our comprehensive product range—including KHT7625-584 TQ508/70Y Oil return connector, Bearing 22209C/W33 GB/T288-94, KHT7625-803 Front Jaw set, and more—solves your most pressing pain points: unplanned downtime, frequent part failures, and mismatched components. Each part comes with detailed technical specifications and maintenance guides, aligned with SY/T 5074-2012 and API Spec Q1 requirements, giving you a reliable procurement reference and a practical technical resource for on-site repairs. Our 22 years of oilfield experience, strict compliance with industry standards, and ISO certifications ensure you’re getting high-quality products that deliver long-term value and peace of mind.

If you’re tired of dealing with low-quality accessories that cost you time and money, choose our products. We supply all the components listed—from GB/T32.1-1988 Bolt M8X14 to KHT7625-584 TQ508/70Y Oil return connector—and more. Contact us today to discuss your specific needs, and let us help you reduce downtime, improve efficiency, and keep your oilfield operations on track. We’re committed to providing the best products and support to help you succeed in the tough oilfield environment, with every component built to perform when you need it most, and comply with the strict standards your operations demand.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619