ZF Friedrichshafen gearboxes |
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The mechanical 16-step ZF Friedrichshafen gearboxes have been proven by time and display remarkable reliability. These gearboxes provide superior performance in onerous conditions of low speeds, where accuracy of control is especially important. Moreover, the European standard of ZF Friedrichshafen gearboxes ensures ideal synchronization with engines of both European and North American makers. |
 Mechanical gearbox 16S2520TO |
Gearboxes with a built-in hydraulic intarder brake provide relief and thus a longer service life to the truck brake system, which is very important for trucks and truck-trains of large gross weight, especially those operated in mountainous areas. |
 Mechanical gearbox 16S2520TO with intarder |
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Gearboxes equipped with hydraulic clutches (WSK) provide a combination of flexibility of a hydromechanical transmission with a high efficiency characteristic of mechanical gearboxes. |
 gearbox equipped with hydraulic clutch 16S2720TO+WSK440 |
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Characteristics of ZF Friedrichshafen gearboxes |
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Designation |
Type |
Number of gears |
Maximum torque, Nm |
Gear ratios |
Length, mm |
Weight, kg |
| 16 S 2220 TO* |
Mechanical |
16 |
2200 |
13.80 — 0.84/R12.92 |
1015 |
315 |
| 16 S 2220 TD* |
2200 |
16.41 — 1.00/R15.36 |
1015 |
319 |
| 16 S 2320 TD* |
2350 |
16.41 — 1.00/R15.36 |
1015 |
319 |
| 16 S 2520 TO* |
2500 |
13.80 — 0.84/R12.92 |
1015 |
319 |
| 16 S 2720 TO* |
2700 |
13.80 — 0.84/R12.92 |
1031 |
334 |
16 S 2720 TO
+ WSK 440 |
2700 |
13.80 — 0.84/R12.92 |
1354 |
595 |
* intarder installation optional |
Allison gearboxes
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Allison gearboxes are installed whenever operating conditions call for frequent shifting of gears and a high torque is required for getaway. The smooth shifting from gear to gear with minimal power-flow loss time ensures a high cross-country capacity of the truck. |
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Gearbox HD4560
Characteristics of Allison gearboxes
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Designation |
Type |
Number of gears |
Maximum torque, Nm |
Gear ratios |
Length, mm |
Weight, kg |
Remarks |
| HD 4560 |
Automatic |
6 |
2100 |
4.70 — 0.67/R5.55 |
794 |
378 |
Without power take-off box (PTOB) and intarder |
| 867 |
406 |
With PTOB but without intarder |
| 794 |
412 |
Without PTOB but with intarder |
| 867 |
440 |
PTOB and intarder | |
The gearboxes are remote-controlled by a pneumatic Servoshift. The telescopic gear shift drive is released hydraulically when the cab is lifted. As an additional option, gearboxes can be equipped with a built-in retarder and various power take-off boxes.
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