Maximum Output Torque
450 000 Nm (331,858 lb/ft)
Max Input Speed
Rated Power P
up to 800 kW (1,305 hp)
A CST gearbox comes in three parts: a supply unit, a first planetary gear stage and an output unit comprising a second planetary gear stage. The KP gearbox also comes in three parts. The supply unit and output unit are the same as the ones from the P gearbox, but the first planetary gear stage is replaced by a bevel helical gearbox unit. The KP gearbox design is available in a left-handed and in a right-handed version. It is also possible to mount the electro-hydraulic controller either inside or outside the supply unit.
The roller bearings of the bevel gear shaft are lubricated by forced lubrication via the built-in oil pump (usually responsible for cooling oil supply to the CST clutch). All other gearings and roller bearings are lubricated by means of splash lubrication.
Reduction ratios of 16:1 and 33:1 are available. The added M in the designation of the gearbox indicates that there is a pump unit with a separate pump motor in the supply unit, which works independently of the gearbox drive motor speed, and therefore ensures that the gearbox is continuously supplied with a constant flow of cooling and lubrication oil.
In contrast to the standard CST45, the electro-hydraulic controller is installed on a drawer and not fixed inside or sideways outside of the supply unit.
Like the CST45, this M version is able to sustain an input power of up to 800 kW/1,088 hp at a mains frequency of 50Hz ( ≈ 1,485 rpm) or 960 kW/1,305 hp at a mains frequency of 60 Hz ( ≈ 1,782 rpm). The permissible output torque is 450,000 Nm (max for 3 seconds). The rated continuous output torque is 170,000 Nm (i=33). The CST45 M gearbox can be used in combination with a HBT variable frequency drive.
Maximum Output Torque (for 3 sec)
|P-45 M CST||450 000 Nm||(331,858 lb/ft|
|Rated Power P|
|Rated Power P |
(n = 1,485 rpm)
|Rated Power P |
(n = 1,782 rpm)
|16||800 kW||1,305 hp|
|21||800 kW||1,305 hp|
|28||800 kW||1,305 hp|
|33||800 kW||1,305 hp|
|39||700 kW||1,142 hp|
|45||540 kW||881 hp|
|50||500 kW||816 hp|
|P-45 M CST|
Gearbox Weight (without oil)
Requirements of Cooling Water
|Required Cooling Water||30 L/min||7.90 gal/min|
|Maximum Water Inlet Temperature||25° C/298.15 K||77° F/298.15 K|
|Input Shaft (cylindrical)||DIN 5480-W 120×4||DIN 5480-W 120×4|
|Output Shaft with Internal Toothing||DIN 5480-N 260×10×30×24||DIN 5480-N 260×10×30×24|
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