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Technical Innovations
New drivetrain products from Carraro


Carraro's 20.14 S tractor axle has a built-in electronically controlled hydropneumatic suspension.


Carraro's modular driveline consists of telehandlers for a 26.25 M front axle, a 26.20 M rear axle, and a TLB4 SD torque-converter transmission.

At Agritechnica 1999, Carraro showed a number of new products. Its new line of axles for tractors—the 20.14 S—has built-in suspension and an electronic control unit. The system marks a further evolution in the concept of axles with built-in suspension, being interchangeable with other units without the need for vehicle adaptation. An articulated quadrilateral structure is added to the axle and fitted with a hydropneumatic shock-absorbing system. This ensures consistent vehicle setup and constant tire contact with the ground. Benefits include good maneuverability, accurate and secure steering, and high speeds over uneven terrain.

Carraro also displayed its new range of agricultural transaxles for use with 26-30 kW (35-40 hp) engines. The transaxles were specifically developed for tractors bound for emerging markets and for light- to medium-duty workloads. A twin-axis design substantially reduces its dimensions, helping vehicle designers optimize space in the driver area and significantly improve both ergonomics and comfort. The basic version, with six forward plus two reverse speeds and sliding gears, is said to offer major cost savings. The hydraulic lift draft has a capacity of 10 kN (2200 lb) and is designed for large attachments. The transaxle's mechanically operated "ball and ramp" wet brakes, positioned close to the differential, act before the reduction unit and are nearly maintenance-free. Pedal-controlled differential locking ensures good grip on difficult terrain. Optimal speed distribution of 3-32 km/h (2-20 mph) allows smooth operation when attachments are carried on the three-point hitch or towed. A version with eight forward and two reverse speeds is optional, featuring constant mesh "collar shift" gears. Mechanical-control 4WD takeoff capability is planned for future versions in the range.

Also showcased at Agritechnica was the latest addition to the Carraro family of agricultural steering axles for tractors up to 224 kW (300 hp). Presented in its basic configuration, the new 20.80 axle was designed to accommodate a number of highly sophisticated options such as wet brakes and a suspension system that do not affect interchangeability on the vehicle.

Carraro also unveiled a driveline designed for applications such as telescopic handlers. The modular system consists of a 26.25 M front axle, a 26.20 M rear axle, and a TLB4 SD torque-converter transmission with built-in gearbox.

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