Allison CLT 6061

In the heavy-duty industrial sector, where reliability and performance are non-negotiable, the Allison CLT6061 Transmission stands as a beacon of engineering excellence. Known for its substantial horsepower and torque capabilities, this transmission is a vital component in a wide array of demanding applications. This article explores the detailed specifications, practical applications, and unique attributes that set the Allison CLT6061 apart in the field of industrial machinery.


Horsepower and Input Speed:

The Allison CLT6061 Transmission is engineered to handle significant horsepower and input speed ranges:

  • Horse Power Min: 525 Hp
  • Horse Power Max: 700 Hp
  • Input Speed Min: 1800 rpm
  • Input Speed Max: 2500 rpm

This range allows it to be utilized in various high-power scenarios, ensuring optimal performance across different applications.

Gearing and Oil Requirements:

The CLT6061 features mechanical gearing with six forward gears and one reverse gear, providing the precision and control needed for complex operations. The recommended oil is C-4, 15W40, with an 18-gallon capacity, ensuring the transmission remains well-lubricated and performs efficiently.

Mounting and Weight:

Mounting options for the CLT6061 include the SAE No. 1 Automatic Flywheel Housing, with additional options for Flexplate Drive. This versatility in mounting makes it suitable for a broad spectrum of industrial machinery. The transmission’s weight ranges from 2200 lbs to 3050 lbs, reflecting its robust and durable construction.

Torque Converter Ratios and Control Systems:

The transmission offers multiple torque converter ratios (TC-683, TC-682, TC-680), providing the necessary torque multiplication for handling diverse loads. The control systems available include both Manual Electronic and Manual Hydraulic options, allowing for precise and adaptable operation.

Optional Engine Driven PTO and Cooler System:

Optional engine-driven PTOs (Power Take-Off) are available with side and top mount options, capable of intermittent or continuous operation. The remote-mounted cooler element ensures the transmission operates within optimal temperature ranges, even under strenuous conditions.


The Allison CLT6061 Transmission is tailored for some of the most demanding industrial applications. Its robust construction and versatile features make it ideal for:

  • High-Pressure and High-Volume Pumps: The CLT6061 is perfect for high-pressure pumping applications, providing the necessary power and reliability.
  • Mud Pumps and Drilling Support: Its robust design makes it suitable for mud pumps and various drilling support operations, including pump down and twin pumpers.
  • Workover Operations: In well-servicing and stimulation, the transmission ensures consistent performance, crucial for maintaining operational integrity.
  • Coil Tubing and Nitrogen Applications: The transmission’s capability to handle significant horsepower and torque makes it ideal for coil tubing and nitrogen applications.

Features and Benefits

Compact Yet Powerful:

Despite its compact design, the CLT6061 offers substantial input horsepower and torque, making it a powerful yet space-efficient solution for industrial machinery.

Versatile Control Systems:

The transmission provides advanced control options, including 6-speed forward through manual electric hydraulic controls (available in both 12-volt and 24-volt configurations) and the popular 6-speed manual hydraulic valve body. This flexibility ensures operators have ultimate control over the transmission’s performance.

Lockup and Direct Drive:

The lockup feature (1 to 1 direct drive) ensures efficient power transfer, reducing energy loss and enhancing performance. This is particularly beneficial in high-power applications where efficiency is paramount.

Enhanced Durability and Reliability:

The Allison CLT6061 is designed for durability and long-term reliability. S&W Power Systems offers fully remanufactured, rebuilt, and dyno-tested transmissions, ensuring each unit is ready to perform under the most demanding conditions.

Advanced Cooling System:

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

Why Choose the Allison CLT6061?

The Allison CLT6061 Transmission is distinguished by its combination of power, durability, and advanced features. Here’s why it stands out in the industrial market:

Proven Track Record:

The CLT6061 has established itself as a reliable performer in various demanding applications, from high-pressure pumping to well stimulation. Its robust design and high-quality components ensure it can handle the toughest jobs with ease.

Flexible Solutions:

S&W Power Systems offers a range of configurations for the CLT6061, ensuring customers can find the perfect match for their specific needs. Whether it’s a particular mounting option or a specific torque converter ratio, the flexibility offered by the CLT6061 is unmatched.

Comprehensive Support:

Choosing the CLT6061 means gaining access to comprehensive support and service from S&W Power Systems. From initial installation to ongoing maintenance, customers can rely on expert support to keep their operations running smoothly.

Economic Efficiency:

The durability and reliability of the CLT6061 translate into economic efficiency. With fewer breakdowns and less frequent maintenance, companies can save on operational costs and ensure higher productivity.


The Allison CLT6061 Transmission is a powerhouse designed to meet the rigorous demands of industrial applications. Its combination of high power, versatile control systems, and robust construction makes it an invaluable asset for operations that require reliability and performance. Whether it’s high-pressure pumping, mud pumping, or any other demanding application, the CLT6061 delivers the power and precision needed to get the job done right. Investing in this transmission means choosing a solution that offers long-term reliability, economic efficiency, and unmatched performance in the toughest conditions.