New Holland has announced the launch of five new T9 AutoCommand models, which introduce the option of a new constantly variable transmission (CVT) into its wheeled articulated tractor range.

This follows the launch of the Case-IH Quadtrac CVX models last year, which use the same four-range ECCOM-6 transmission unit, developed by CNH in conjunction with ZF in Germany.

The introduction of a CVT into its largest tractor range brings the latest T9 AutoCommand models directly in line with other CVT-equipped heavyweights like the Claas Xerion and Fendt 1050.

New Holland claims the improved performance offered by the AutoCommand transmission, combined with the impressive manoeuvrability and the immense tractive power associated with the articulated chassis design, gives the new T9 models a distinct performance advantage over their competitors.

It is reported the new gearbox improves productivity and reduces fuel consumption by offering more precise speed control, faster acceleration under load and vastly improved low-speed operation.

The AutoCommand option is now available in in the narrow-frame (36in) T9.435, T9.480, T9.530 and T9.565 models, in addition to the wide-frame (44in) T9.600.

The CVT-equipped models provide a working speed range which extends from 0.5km/h up to 43km/h, with top-speed achieved at just 1,600rpm.

However, due to the design constraints of the CVT, which is rated to handle a maximum of 600hp, AutoCommand is not available in the more powerful T9.645 or T9.700 models, which retain an electronically controlled full-powershift gearbox.

Inside the cab, the T9 uses identical control systems found in the smaller T6, T7 and T8 AutoCommand tractors, providing commonality between the ranges. These include New Holland’s Sidewinder II armrest, which integrates New Holland’s CommandGrip multi-function joystick and its Intelliview IV touchscreen control monitor.

The new CVT provides four operation modes, which are identified as: Auto, Manual, Cruise Control and PTO-mode.

Additionally, three settings are provided for transmission aggressiveness, which include: Progressive, for smooth uptake; Field Work, for a sharper response; and Rapid Load, for instant response.

These settings can be fine-tuned by the operator during the working cycle, by using the Droop Control system. In normal operation, the engine and transmission operate in harmony to optimise efficiency. Droop Control enables the driver to adjust the balance between power and economy, to suit the task at hand or the field conditions.

The opportunity for a brief test drive in a T9.565 AutoCommand, demonstrated a vast improvement in the controllability of the tractor, which accelerates from dead stop with alarming progress.

The CVT is simple to set up and use, exceptionally smooth in operation, and extremely quiet with no evidence of gear whine at any speed. Prices are yet to be announced.

However, the new models are now available for order.