70 Series Combines Drives and Axles
70 Series Combines Drives and Axles
The ProDrive gives you more control without the stick
Heavy-duty, single-reduction final drives provide the load-carrying capacity to handle large highflotation tires, 42-inch duals, and large header equipment. You won’t need to add costly planetaries. The large STS Combines also boast high-torque hydrostatic drives, plus heavy-duty transmission, brakes, and rear-wheel spindles.
The ProDrive is the latest advance in transmission technology. ProDrive delivers peak harvesting efficiency in all ground conditions. You’ll appreciate the precise speed control it offers, especially in hilly terrain and tough harvest conditions. There’s no need to constantly monitor and adjust the hydrostatic control handle or stop to shift gears while harvesting.
Main engine gearcase distributes power to the separator gearcase, grain tank unloading system, residue-disposal system, and ground-drive system. Hydrostatic pump, hydrostatic charge pump, main hydraulic pump, and steering pump are driven directly from the main engine gearcase. There are no belts to adjust or replace. Wet-clutch design provides longer life and greater reliability.
Seamless shifting. When ground conditions change, ProDrive lets you smoothly shift between two speed ranges with the push of a button. You’ll no longer have to stop to shift when going up or down hills or exiting fields. Up to 42% more torque at 6 mph (compared to a three-speed transmission) delivers the power you need in tough conditions. And to provide maximum productivity, the ProDrive system includes integrated HarvestSmart™ feedrate control.
The ProDrive Ground Drive System Get more precise, more consistent control of your ground speed throughout the travel range of the hydro handle. ProDrive lets you switch between two infinitely variable speed ranges with the push of a button. Using the CommandTouch armrest console, set the first range for typical harvesting speeds, and the second for transport.
HarvestSmart delivers peak results. To further sustain high levels of productivity, we’ve integrated HarvestSmart Auto Feedrate Control into 9870 STS Combines with ProDrive, and it’s available for all other 70 Series machines. Harvest Smart lets you choose either maximum capacity or minimum loss modes; the system continually adjusts the combine’s forward speed until either the capacity limits or grain loss limits are reached, and then disengages once you move the hydro handle.
This heavy-duty rear-axle spindle – standard on STS Combines – offers tremendous load-carrying capacity. It lets you go with larger steering tires without the extra expense of 4-wheel-drive. All 70 Series Corn Combines feature adjustable rear axles that let you adjust tire tread from 120- to 152-inch centers in 8-inch increments...ideal for ridgetillage operations.
The 9570 and 9670 STS combine models feature a variable-speed hydrostatic drive system and 3-speed transmission. An infinite speed range in each gear lets you match ground speed to the crop and conditions. The variable-displacement pump is gear driven directly from the main engine gearcase, so there are no ground belts to worry about. Plus, the 3-speed transmission gives you a wide range of ground speeds for harvesting, as well as brisk transport speeds.
Two-speed 4-wheel-drive lets you switch between torque ranges. In slow-speed mode, the high-torque rear assist is ideal for tough conditions. Use high-speed mode for low-torque performance and faster ground speeds.
Another benefit ProDrive delivers: An electro-hydraulic differential lock with a 4-pinion differential for greater traction in muddy harvesting conditions.
All 70 Series Combines feature a high-strength axle built from a one-piece rectangular tube welded to the separator uprights. Its load-carrying ability and durability are far superior to the bolt-together designs found on other combines.
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