P.B Series

Drive Units for Slewing Tower Cranes

P.B series are compact planetary gearboxes with the capacity to reliably carry the high radial load and peak torques, which they are exposed due to the working principle. They are generally used in the blade-nacelle guidance of wind turbines and tower crane rotation. Pinion gears can be produced with output shaft as a single piece when desired.

Input Type

PNB Series

With IEC B5/B14 motor flange

PTB Series

With solid input shaft

PVB Series

With AC Motor

Output Type

P.B.01 Series

With solid output shaft

P.B.P1 Series

With integrated pinion shaft

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Specifications & Advantages

Wide torque and ratio range
Reinforced bearings and flange for withstanding high radial and axial loads.
Integrated pinion shaft made of 8620 material upon request.
Oil expansion tank for humid environment.

Performances

Gearbox Size	Ratio Range [i]	Nominal Torque [Nm]	Hollow Shaft Diameter [mm]
P.B15..L	4 - 2.858	3.100	Ø80/170
P.B16..L	4 - 2.858	5.000	Ø80/170
P.B19..L	4 - 2.957	8.500	Ø100/210
P.B23..L	3 - 2.456	12.500	Ø120/210
P.B24..L	3 - 2.456	20.000	Ø120/210