Holder Tractors Inc. > Tractors & Applications > Drive Concepts > SDS driving gear

Customized designs

Two driving systems in one

Only Holder can offer this choice of driving system: The patented Special Drive System (SDS) gives the operator a choice between classic Holder operation and pedal operation. This means that there is an individually suitable driving level available for each deployment - according to the driving philosophy and preferences.

The benefits of SDS are that the appropriate driving level available for each deployment and each driver can have their "favorite driving program".

Holder vehicles equipped with this system have a total of four driving levels. Two for automotive driving between 0 and 40 or 0 to 20 km/h, one work program with a digital-electronically-controlled constant speed and the SDS program. Here, the power take-off speed is set to the setpoint using a manual accelerator, whilst the driving speed is controlled by actuating the driving pedal.

Differential lock for both axles

In all driving levels, the travel direction can be changed using a toggle switch. A differential lock of up to 100% can be applied to both axes and can be set to any level using a toggle switch. The effect of the standard Holder properties (articulated steering, four-wheel drive, four equally-sized wheels and wheel load compensation) remain unchanged, thus helping the operator to cope with difficult driving situations.