Construction And Method Of Operation; Bevel­helical Planetary Gear Unit; Housing; Toothed Components - Siemens FLENDER PLANUREX 2 PBUC Series Assembly And Operating Instructions Manual

5.2

Construction and method of operation

Standard mounting position in operation: Longitudinal angle (low or high position) to ± 15°,
constant transverse angle 10°. To ensure adequate lubrication here, a motor pump is normally
required.
For the current fitting position and maximum inclined positions, see the dimensioned drawing.
5.2.1 Bevel­helical planetary gear unit
The bevel­helical planetary gear unit essentially comprises a planet stage, two helical gear stages, a bevel
gear stage and a hollow­type output shaft with shrink disk.
The gear units are characterised by a low noise level, achieved by ground helical gears with a high contact
ratio.

5.2.1.1 Housing

The multi­section gear­unit housing is of welded steel. The housing is of a rigid design and due to its form
has excellent noise and temperature characteristics.
A single­sided torque reaction arm is mounted on the housing. The drive motor can be fastened to the
housing with a motor bracket.
The housing is provided with adequately dimensioned lifting holes and inspection and assembly covers.
It is also fitted with an oil dipstick for checking the oil level, two drain plugs and a breather screw for venting
the housing.
Colour codes for ventilating, oil inlet, oil level and oil drainage:
Ventilation:
Oil inlet:
Oil level:

5.2.1.2 Toothed components

The externally toothed components of the gear unit are case­hardened and ground. The teeth of the
internally toothed helical gear are internally hobbed or shaped. The high quality of the teeth leads to
a significant noise reduction and ensures safe and reliable running.

5.2.1.3 Lubrication

The teeth and rolling bearings of the gear units are adequately supplied with oil by splash and pressure
lubrication. The gear unit thus requires very little maintenance.
For safety reasons, the gear unit is supplied without oil filling for transport.

5.2.1.4 Shaft bearings

All shafts are mounted in rolling bearings.

5.2.1.5 Shaft seals

Radial shaft­sealing rings at the shaft outlets prevent oil from escaping from the housing and dirt from
entering it. Additionally fitted to the high­speed input shaft and the output shaft of the planetary helical gear
unit are labyrinth seals which can be refilled with lubricant.
yellow
yellow
red
BA 9213 en 03/2012
Oil drain: white
Lubrication: red
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