China 500/125 Oilfield Air Tube Clutch Factories, Product

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China 500/125 Oilfield Air Tube Clutch Factories, Product

ThisÂ pneumatic clutch is a heavy-duty power transmission component widely applied in Chinese and international drilling rigs. Designed in accordance with oilfield standard requirements for drilling and well-servicing equipment, this clutch is engineered to engage and disengage rotary systems with smooth, controllable torque transfer. Its construction integrates an inflatable rubber air tube mounted between driving and driven plates(friction plates), allowing torque transmission through uniform radial expansion. This modelÂ designation indicates a clutch capable of handling demanding rotary torque and horsepower ranges, making it particularly suited forÂ rotary tables, mud pumps, and drawworks. With a proven track record in Chinaâ€™s oilfield equipment manufacturing factory, this clutch has been exported to multiple markets and is recognized for stable performance in both onshore and offshore operations.

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Product Description

Product Specifications

Chinese Model	500/125
Temperature rating	-20°C to 70°C
Clutch Rim material	45# Steel (Equivalent to AISI 1045)
Air Tube material	Nitrile rubber (NBR)
Service life	Under normal operating conditions, the air tube typically lasts 1~3 years, the friction plate assemblies provides 3,000~5,000 working hours, while the steel rim can remain in service for more than 10 years; with proper maintenance, the overall service life of the clutch can be significantly extended.
Application	This pneumatic clutch is widely applied across the oil and gas drilling industry as a critical component of rig power transmission systems. Its primary applications include:
Rotary Tables	Smooth torque delivery for stable drilling rotation.
Drawworks	Precise engagement and controlled braking during hoisting operations.
Mud Pumps	Reliable power transfer for high pressure fluid circulation.
Offshore and Onshore Rigs	Proven adaptability to extreme environments, including HPHT (high pressure, high temperature) conditions.
Inspection Support	Third party witness and inspection report available: Bureau Veritas (BV), CCS, ABS, SJS etc.

Product Features

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High Torque Transmission: Capable of reliably transmitting large torque loads, suitable for high power drilling applications.

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Air-Controlled Engagement: Inflatable air bladder ensures progressive engagement and disengagement, reducing shock loads on the drivetrain.

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Durable Construction: Fabric-reinforced rubber element with steel driving plates, engineered for long service life under continuous operation.

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Serviceability: Modular design allows convenient replacement of friction elements and air tube without dismantling major assemblies.

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Operational Safety: Built-in release mechanism prevents over inflation and ensures stable pressure control.

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Compliance: Manufactured under oilfield industry standards and Chinese GB industry standards, ensuring global compatibility.

OEM Equivalent & Compatible Info

By combining a high strength structural design with ease of maintenance, the 500/125 pneumatic clutch offers drilling contractors a dependable solution that enhances rig uptime, reduces maintenance costs, and ensures compliance with international safety standards.

Product Details

Frequently Asked Questions

What is the service life of the 500/125 pneumatic clutch?

Under normal operating conditions, the air tube lasts 1-3 years, friction plates provide 3,000-5,000 working hours, and the steel rim can last over 10 years.

What materials are used for the rim and air tube?

The clutch rim is made of 45# Steel (AISI 1045 equivalent), and the air tube is constructed from high-quality Nitrile rubber (NBR).

In which drilling components is this clutch typically used?

It is primarily used in Rotary Tables, Drawworks, and Mud Pumps for both onshore and offshore drilling rig transmission systems.

Can this clutch withstand extreme temperatures?

Yes, the 500/125 model has a temperature rating ranging from -20°C to 70°C, making it suitable for various oilfield environments.

Are third-party inspection reports available for this product?

Yes, inspections and witness reports can be provided by reputable organizations such as Bureau Veritas (BV), CCS, ABS, and SJS.

What are the advantages of air-controlled engagement?

The inflatable air bladder allows for progressive engagement and disengagement, which significantly reduces shock loads on the drivetrain and enhances operational safety.