ROSSI reducers for extruders

Parallel and right angle shaft gear reducers and gearmotors equipped with auxiliary external support designed for single screw extruder coupling.Two support types available:

•  «N» for normal loads,
•  «H» for high loads.

Two gear reducer layout available:

• «Z»: standard gear reducer with extruder support positioned on high speed shaft opposite side;
• «U»: «long» gear reducer with extruder support and high speed shaft on the same gear reducer side;

The particular construction solution adopted allows the use of the standard gear reducer in order to grant:

• high, reliable and tested performances;
• high manufacturing quality standard;
• «symmetrical» universal mounting suitable for different mounting positions;
• rigid and precise cast iron single-piece housing with high oil capacity.

The gearmotor input side has been conceived to the high specific power motor needs (inverter duty motors), through:

• extension of the motor coupling dimension range available for each gear reducer size;
• motor coupling dimensions even not standardized according to standard IEC 60072-1;
• motor fitting system through hub clamp and key.

Outstanding customization possibilities (even for accessories):

• extruder support coupling dimensions of driven machine customizable (for number, position and dimension of the holes);
• adaptation flange interposed between extruder support and extruder, for the maximum application versatility;
• independent cooling unit with oil/water heat exchanger
• for the simultaneous cooling of gear reducer and extruder support
• which can be customized on request with protections, measuring instruments and alarm signals.

New cooling system adopting a fi nned and removable inner heat exchanger: no external volumes, great heat exchange effi ciency, allowing after-market installation and removal without gear reducer dismounting.