Used for years in vocational applications around the world, the Cat CX31 Automatic Transmission has a proven track record for quality and reliability that helps maximize uptime—delivering rugged durability, fuel economy and smooth shifting for optimum power and efficiency.
Watch the video to see how the Cat Truck can help you shift into work mode.
NOTE: Other transmission options include the Manual and Ultrashift® Plus Vocational Transmissions built by Eaton.
Full-power shifts provide quick acceleration and eliminate the need for constant shifting in traffic, improving efficiency to keep trucks, ground crews and other equipment working productively.
Improve Fuel Efficiency
Ideal speed and torque combinations boost fuel economy—narrowing the gap between your best and worst fuel mileage drivers.
Operate More Safely
There’s no need for drivers to take their hands off the wheel, so they can focus on their surroundings.
Recruit & Retain Drivers
It’s easier to find drivers who can handle a truck that does the shifting for them—and they’ll be less fatigued at the end of the work day.
Lock-Up Torque Converter
The aluminum lock-up torque converter increases starting efficiency. It also increases operating efficiency, because it provides the right speed and torque combination for different applications, with the added bonus of reduced fuel consumption.
Heavy Duty Clutches and Gear Sets
Heavy Duty clutches and gear sets enable full power shifts, which increase the CT660's efficiency and productivity, and at the same time reduce driveline shock loads
Six forward speeds and one reverse speed allow engines to deliver horsepower of up to 550 (410kW) and torque up to 1,770 lb-ft (2400Nxm). So whether the CT660 is climbing a jobsite hill or travelling the highway, the CX31 selects the right gear for peak performance
Power Take-Off Options (PTO)
PTO alternatives for the Cat CX31 Automatic Transmission include two side locations, and a high output rear PTO. The optional rear PTO offers improved packaging and serviceability, and full time live power under all operating conditions for enhanced performance.
The external transmission filter means simpler and quicker maintenance.
Electronic Control Module
The CX31's Electronic Control Module (ECM) regulates gear shifts based on the driver's throttle demand and the vehicle's speed. Mounting the ECM directly on the transmission reduces the amount of wiring required and increases durability.
Adaptive Shift Logic
The CX31's adaptive shift control logic uses information from the driver's operating style to balance fuel economy and performance. The shift control logic also makes the CT660 easier for the driver to operate, which results in improved productivity and machine safety.
Features and Benefits
- Automatic shifting: Simplifies finding, training & retaining productive drivers
- Performance-match with CT Series Engines: Provides faster, smoother & more consistent shift quality, plus increased powertrain durability, performance & operating efficiency
- Electronic Control Module (ECM): Regulates gear shifts to optimize engine performance & reduce wear
- Two side PTO locations & Cat exclusive rear PTO: Improves packaging, performance & serviceability
- Six forward speeds & one reverse speed: Always chooses the right gear for peak performance & fuel efficiency
- Common diagnostic tools: Lets your Cat Dealer service the entire truck at one facility, saving time
Shifting Into Work Mode
Find out how the CT660's CX31 Automatic Transmission gives drivers more control, improving safety and performance on the job.