Allison CLT 750

In the dynamic and demanding world of oil field operations, equipment reliability and performance are crucial. The Allison CLT 750 Transmission stands out as a key player, offering robust capabilities and versatility tailored specifically for the oil field industry. This article provides an in-depth look at the specifications, applications, and unique features that make the Allison CLT 750 a trusted choice for oil field operations.


Horsepower and Input Speed:

The Allison CLT 750 Transmission is designed to handle a range of horsepower and input speeds suitable for various oil field applications:

  • Horse Power Min: 325 Hp
  • Horse Power Max: 525 Hp
  • Input Speed Min: 1800 rpm
  • Input Speed Max: 2500 rpm

This versatility ensures that the transmission can adapt to different engine outputs, maintaining optimal performance across a spectrum of operational conditions.

Gearing and Oil Requirements:

The CLT 750 features mechanical gearing with five forward gears and one reverse gear, providing the necessary control and adaptability for intricate oil field operations. The recommended oil is C-4, 15W40, with a capacity of 8 gallons, ensuring efficient lubrication and long-term reliability.

Mounting and Weight:

Mounting options for the CLT 750 include the SAE No. 1 Automatic Flywheel Housing, with additional configurations available for Flexplate Drive and Remote Mount Flange applications. This variety in mounting options makes it highly adaptable to different machinery setups. The transmission’s weight ranges from 1700 lbs to 1850 lbs, reflecting its lightweight yet durable design.

Torque Converter Ratios and Control Systems:

The CLT 750 offers multiple torque converter ratios (TC-499, TC-498, TC-497, TC-495, TC-490, TC-470), providing the torque multiplication needed to handle varying loads effectively. The control system is a manual hydraulic setup, offering precise control over the transmission’s performance.

Optional Engine Driven PTO and Cooler System:

Optional engine-driven PTOs (Power Take-Off) are available in side and top mount options, capable of intermittent or continuous operation, ensuring the transmission can meet the diverse needs of oil field machinery. The remote-mounted cooler element ensures the transmission remains within optimal temperature ranges, preventing overheating during prolonged use.


The Allison CLT 750 Transmission is tailored specifically for oil field operations, providing the power and reliability needed in this demanding sector. Its robust construction and versatile features make it ideal for:

  • Oil Field Equipment: The transmission’s ability to handle significant horsepower and torque makes it perfect for various oil field machinery, ensuring reliable performance under heavy loads.
  • Drilling and Pumping Operations: Its precise control and robust gearing make it suitable for drilling rigs and high-pressure pumping operations, where consistent power delivery is crucial.
  • Support Equipment: The CLT 750 is also ideal for support equipment in the oil field, such as workover rigs and well service units, providing the reliability needed for continuous operation.

Features and Benefits

Robust and Reliable:

The Allison CLT 750 is built for durability and long-term reliability, making it a cost-effective choice for oil field operations where equipment downtime can be costly.

Precision Control:

The manual hydraulic control system offers operators precise control over the transmission’s performance, ensuring smooth operation and adaptability to various tasks.

Enhanced Torque Multiplication:

With multiple torque converter ratios available, the CLT 750 provides enhanced torque multiplication, essential for handling diverse loads and ensuring smooth operation across different scenarios.

Efficient Cooling System:

The remote-mounted cooler element ensures that the transmission remains within optimal temperature ranges, even during extended use, preventing overheating and ensuring consistent performance.

Why Choose the Allison CLT 750?

The Allison CLT 750 Transmission is a standout choice in the oil field industry due to its combination of power, versatility, and advanced features. Here’s why it excels:

Proven Performance:

The CLT 750 has established itself as a reliable performer in the oil field, with a track record of durability and consistent performance in demanding conditions.

Adaptable Solutions:

With various mounting options and torque converter ratios, the CLT 750 offers flexible solutions that can be tailored to meet specific operational needs, ensuring optimal performance.

Comprehensive Support:

S&W Power Systems offers fully remanufactured, rebuilt, and dyno-tested transmissions, ensuring each CLT 750 is ready to perform under the most demanding conditions. This comprehensive support ensures reliability and reduces downtime.

Economic Efficiency:

The durability and reliability of the CLT 750 translate into economic efficiency. With fewer breakdowns and less frequent maintenance, companies can save on operational costs and ensure higher productivity.


The Allison CLT 750 Transmission is engineered to meet the rigorous demands of the oil field industry. Its combination of high power, precise control, and robust construction makes it an invaluable asset for operations that require reliability and performance. Whether it’s drilling, high-pressure pumping, or any other demanding application, the CLT 750 delivers the power and precision needed to excel. Investing in this transmission means choosing a solution that offers long-term reliability, economic efficiency, and unmatched performance in the toughest conditions.