Dana rolling into Bauma with drivetrain systems

  • 15-Mar-2010 02:23 EDT

Dana's drivetrain solution for 16-t (17.5-ton) front-end loaders includes a summing motor, two planetary drive axles, and driveshaft.

Dana's will be showing at Bauma one of its solutions for 16-t (17.5-ton) front-end loaders that includes a summing motor, two planetary drive axles, and driveshaft.

The Spicer 319 summing motor transfer case targeted for applications requiring 104 to 164 kW (140 to 220 hp) employs two hydrostatic motors, each with optimized gear ratios. To maximize efficiency at higher vehicle travel speeds, a clutch automatically disconnects the low-speed, high-gear-ratio motor, allowing the high-speed motor to function alone. The transfer case delivers "seamless" continuous variable transmission (CVT) performance from 0 to 40 km/h (0 to 25 mph).

The Spicer 114 drive axle includes a limited-slip differential lock that provides a 45% locking capacity, delivering improved tractive force and nimble vehicle steering for front-end loader applications, says Dana. The 114 axle can be configured with a variety of other hydraulic-locking differential options, including dog clutch and multidisc clutch. Inboard wet disc brakes offer fail-safe stopping performance and energy absorption, while a fail-safe park brake is available as an option. It includes 6:1 outboard planetary wheel ends, self-adjusting internal wet brakes, and a trunnion mounting option.

Also being introduced is a new driveline system for 8- to 9-t (9- to 10-ton) forklifts that features a Spicer TE-08 powershift transmission and Model 139 axles. The system was developed to accommodate larger-sized material handlers and builds on the popularity of the drivetrain system designed for 5- to 7-t (6- to 8-ton) forklifts first introduced at Bauma in 2007.

Making its debut at Bauma 2010, the Spicer Model 139 axle was specifically designed for industrial lift trucks. Suitable for forklifts equipped with pneumatic or cushion tires, the 139 axle is engineered to handle higher load capacities while offering the same durability and reliability of Model 137/138 axles already used for smaller forklifts.

Model 139 axles include integral frame and mast mounting provisions for fixed-mast forklift applications, and its spiral bevel center section and a 6:1 planetary ratio generate 13:1 through 17:1 overall axle ratios. It has a planetary design that allows for a small ring gear, enabling engineers to locate the mast as close to the axle’s center line as possible for optimum geometry in load carrying and lifting.

To simplify service and maintenance, the Spicer Model 139 axle is designed with integrated outboard wet-disc brakes. The fully enclosed design keeps the brakes sealed from water and dirt ingress to reduce wear and minimize noise. The axle is designed with a self-adjusting service brake system that minimizes hydraulic actuation oil displacement requirements.

Specifically designed for the industrial forklift market, the field-proven Spicer TE-08 transmission is available with the brake-by-clutch feature, a single-pedal drive technology that allows the operator to actively decrease the speed of the vehicle by lifting his/her foot off the accelerator pedal and engaging clutches in the transmission that would otherwise spin free. The brake-by-clutch system simplifies vehicle operation and reduces operator fatigue by enabling acceleration and deceleration through the use of a single pedal.

Rated at 55 to 82 kW (75 to 110 hp), the TE-08 can be configured with a conventional electric valve featuring hydraulic modulation or a fully electronically modulated clutch control using proportional solenoids. Full electronic modulation and its associated controllers enable OEMs to use the complete range of controls: safety inhibits, diagnostics, system monitoring, load- and speed-compensated automatic shifting, shift overlap control, electronic inching, and automatic throttle up.

The TE-08 offers three forward and two reverse speeds, and it is also available as a two-speed forward system. It features a reduced transmission length and output drop, helical gears for noise reduction, and an integral engine pump drive to power the system hydraulics.

Dana's system engineered for 17.5-t (19-ton) wheeled excavators is composed of a Spicer Model 263 planetary steering axle and a Model 163 planetary rigid axle with a directly flanged Model 369 shift-on-fly hydrostatic transmission.

Specially designed to enhance mobility, comfort, and ease of use, the 369 shift-on-fly hydrostatic transmission provides a proven alternative to expensive powershift solutions and the operational limitations of sliding collar range shift transmissions, says Dana.

Vehicles equipped with traditional range-shift solutions must completely stop before shifting between ranges, but the gearbox on the 369 transmission allows for quick shifting from low to high range while moving at speeds up to 40 km/h (25 mph).

The 163 and 263 axles are designed with hydraulic-applied, outboard wet disc service brakes located in the wheel hub to minimize vehicle rocking when operators dig without deploying the outriggers. The system is also available with an optional spring-applied hydraulically released park brake, which reduces the number parts and eliminates the need for a separate external park brake.

Both axles feature a maximum output of 52,960 N·m (39,061 lb·ft). The 263 provides an integrated steering cylinder with a 35° maximum steering angle and a 6:1 planetary final drive ratio.

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