Plastic machines
Precision in the process — from the screw to the finished part.

Plastics processing machinery – whether injection molding machines, blow molding machines, calendar systems or extruders – places high and varied demands on drive technology. High torques, precise speed control, low-noise operation and robust mounting of the output shafts must all be achieved simultaneously. Added to this are often confined installation spaces and the desire for long maintenance intervals.

CHEMNITZER ZAHNRADFABRIK develops specialized gearboxes that are precisely tailored to the respective machine type and process – with the level of design detail required by complex plastics applications.

Typical requirements for the gearbox

• Capability to handle high torques whilst maintaining precise speed control
• High load-bearing capacity of the output shaft bearings against axial and radial forces
• Precise positional alignment of the output shafts in multi-shaft designs
• Low-noise and low-vibration operation
• Compact design for installation in confined machine layoutsOptional: ATEX-compliant versions for potentially explosive atmospheres

What we offer

From gear design right through to the integration of overload clutches or axial force measurement devices, we provide comprehensive support for your project. Our experience with plastics machinery ranges from laboratory extruders to large-scale industrial plants – and we are familiar with the typical challenges of this sector, having worked on many joint projects.

Typical gearbox types and application examples

• Multi-stage reduction gearboxes with power split for twin-screw side conveyors
• Laboratory extruder gearboxes with high power density and integrated overload clutch
• Hydraulic motor gearboxes for responsive drives in injection molding machines
• Bevel gearboxes for blow molding machines and calendar drives