Extruder gearbox
Our gearbox as the heart of your extruder
The extreme drive torques that sometimes occur here result in high continuous loads. Failures not only cause costly downtimes for the operator, but also become economic risks due to the associated delivery delays. This is why many well-known manufacturers of extrusion systems do not compromise on these important components and opt for quality gearboxes from Koellmann Gear. After all, extruder gearboxes from Koellmann Gear have already proven themselves in thousands of systems all over the world. Not only does the proven cutting-edge technology set standards in terms of reliability and durability with its unmatched functional safety compared to the competition, but also in terms of customer satisfaction.
Technical data
- 2- and 3-stage version
- 18 sizes
- Over 500 variants
- Gear ratios between 5:1 and 100:1
- Maximum output torques up to 200,000 Nm (under extruder conditions)
- Housing designs of Koellmann gearboxes are optimized using FEM
ADVANTAGES
Extruder gearboxes from Koellmann Gear are specially developed to meet the requirements of extrusion systems. They are characterized by:
- Extremely resilient housing walls and integrated thrust bearings to absorb the high axial forces caused by the plasticization of the granulate in the screw area
- Low maintenance due to integration of the thrust bearing in the housing
- Gearbox design for use in processing a wide range of materials (plastics such as thermoplastics, thermosets, elastomers or rubber)
- Consistently high quality of the melt due to extremely smooth running and vibration-free operation of the gearbox
- The UNEX (Universal Extruder) gearbox series enables use in various installation positions such as
- Vertical output top / bottom
- lying left / right
- Z-FLOW / U-FLOW
for use in your linear, star-shaped or cascade systems.
APPLICATIONS
Koellmann gearboxes have been specially developed for use in extruders. Here, a compact design with high power density and a long service life have been brought to an economic denominator. The wide range of applications extends from the plastics and rubber processing industry to recycling plants and food production.
- Cable and pipe sheathing systems
- Production of plastic profiles and pipes
- Production of fuel tanks for the automotive industry
- Film blowing systems for the packaging industry
- Blow molding systems for plastic containers
- Extruder for rubber profiles
- Flat film production
DESIGNS AND ACCESSORIES
With Koellmann gearboxes tailored to individual requirements, manufacturers of extrusion systems can cover all their gearbox needs. The gearboxes combine maximum standardization through compact, one-piece universal housings with maximum flexibility in terms of design, connections and accessories. The gearboxes can be used in all installation positions, even when operating at an angle, e.g. as a co-extruder. The gearboxes can even be used lying on their “belly”.
GEARBOXES
- Universal installation positions
- Flexible adaptation to customer-specific requirements
- High power density due to narrow size spacing
- Axle spacing of 2- and 3-stage gearboxes is the same
- Modular gearbox system
- One-piece and torsion-resistant gearbox housing
INSTALLATION SOLUTIONS
- Universal installation positions
- Z, U or angle design
DRIVING IN
- Flexible coupling
- V-belt operation
- Motorized lantern
- Motorized chair
- Direct drive via hollow shaft optional
COOLING
- Integrated cooling coil
- External heat exchanger
LUBRICATION
- Splash lubrication
- Pressure circulation lubrication
COOLING VARIANTS
- Integrated cooling coil
- External heat exchanger
LUBRICANT MONITORING
- Temperature monitoring
- Flow rate monitoring
- Pressure monitoring
- Oil filter
- Level monitoring
- Particle monitoring
- Oil condition monitoring
DRIVE
- Solid shaft
- Hollow shaft
CUSTOMIZED DRIVE SOLUTIONS
- Flexible coupling
- V-belt drive
- Engine lantern for installation of a B5 engine
- Motorized chair
- With motor on request
CUSTOMIZED OUTPUT DRIVE DESIGNS
- Barrel and screw connection according to customer specifications
- Cooling output lanterns in the catchment area
- Worm extraction possible through the output shaft