Flender gear units for pulp and paper, flender gearboxes

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Flender gear units for pulp and paper

In tissue machines and in some paper and paperboard machines there is an M.G. cylinder. These M.G. cylinders are used to give the paper a single-sided smooth and shiny surface, or to ensure the drying process for tissue paper. What is special about the M.G. cylinder is its diameter of up to 6 m. Similar to the drying cylinders, the gear unit is attached to the cylinder pin as a shaft-mounted gear unit. As with the drying cylinders, steam is led through this cylinder pin into the M.G. cylinder.

Just as throughout the field of paper machinery, Flender gear units for pulp and paper have proven themselves for decades. Flender gear units for smoothers and cylinders of type GHZP/GHDP for M.G. cylinders can be ordered in the following designs:

With one or two input shafts
With or without Sunday drive
Two- or three-stage with transmission ratios from 6 to 100
With hollow shaft inside diameters up to 550 mm
FLENDER gear units for M.G. cylinders are suitable for output torques from 14,000 to 160,000 Nm.

Flender gear units for smoothers and cylinders

Your benefits at a glance

Maintenance-free labyrinth seals
Designs for one and two input shafts
Hollow shaft inside diameter up to 550 mm
Gear unit can handle axial forces from the steam head of up to 40,000 N.

Applications

Glazing/drying
– Tissue machines
– Paper machines
– Paperboard machines

Paper machines

Today’s paper machines are well over 100 m long and, depending on the type of paper, up to 10 m wide, several floors high, and allow production speeds of over 2000 m/min, just to mention only a few requirements of a modern paper machine.

To meet these enormous requirements and the high expectations of customers regarding the paper quality, reliable power transmission equipment is required. For many decades, Flender gear units for pulp and paper designed specifically for the needs of the paper industry have been used.

Whether helical or bevel helical design, single or two-stage, vertical or horizontal mounting position, FLENDER has just the right gear unit for your paper machine. Output torques of up to 820,000 Nm can be achieved

Flender gear units for paper machines

Your benefits at a glance

Improved noise behavior through ground bevel gears, noise-absorbing housing and high contact ratio of the gear teeth
Increased operational reliability due to design with a low maximum oil temperature
Shorter delivery times by using a new modular principle

Applications

All drive points of the paper machine
Reeler
Pulp
Recovered paper
Wet end
Coating machines
Calenders
Wastewater treatment plant

Hydrapulpers

Pulper are big tuns where raw materials and water are mixed to fibre. Raw materials are wood fibre, pulp, and waste paper.

The fibre consists to 99% of water. It is transported from the pulper directly to the proportioning system. Here, filler and auxiliary substances are added to the mixture in accordance to the special formula. 2- or 3-stage. Flender gear units for pulper and bevel helical gear units are often used to drive the big pulpers.

Torques in a range between 23,800 and 470,000 Nm can be realized. The FLENDER gear units are well known for their outstanding product and manufacturing quality. Due to the high degree of standardization Flender gear units for pulp and paper are soon available worldwide and offer an attractive price-performance-ratio.

Flender gear units for pulper

Your benefits at a glance

Low noise emissions due to profile ground teeth, and noise absorbing housings and a high contact ratio factor of the gear teeth
Increased lifetime of libricants (oil) by means of design with a low maximum oil temperature
Very strong output shafts and bearings allow the absorbing of high axial and radial loads as expected for pulper with rotor contact.

Applications

Pulper

FLENDER