ZAMBELLO Gearbox
ZAMBELLO Gearboxes (ZR-Group) for Extruders are available in the UK from YB Components.
ZAMBELLO Riduttori is an Italian gearbox manufacturer founded in 1957 by Zevio Zambello. With production sites in Magnago (Milan province) and Lendinara (Rovigo province).
Their core market is industrial gearboxes tailored for extrusion machinery and plastics processing, especially single-screw extruders, twin‐screw extruders (co-rotating and counter‐rotating), injection moulding machines.
ZAMPELLO's Gearbox portfolio includes; Single-Screw Extruder Gearboxes, Twin-Screw Extruder Gearboxes (Co- and Counter‐Rotating), Injection Moulding Machine Gearboxes, Special/Custom Gearboxes.
ZAMBELLO Gearboxes for Single-Screw Extruders
The ZPE series for single-screw extruders confirms Zambello’s position on the world top level as to the transmissible torque as referred to weight and dimension of the gearbox
ZAMBELLO Gearboxes for Co-Rotating Twin-Screw Extruders
ZT Range: With a transmissible torque density up to 14 Nm/cm3 per per shaft, is available for centre distances from 24mm to 200mm. (On request, bigger versions can be provided)
TST Series: Due to those manufacturers who need to increase the power rates of co-rotating twin-screw extruders, the TST (Twin Super Torque) series is provided with a torque distribution system, which is able to ensure a considerable increase of the output revs (up to 1800 rpm) and of transmissible torque density (up to 16 Nm/cm3 per shaft).
The dimensions of the gearboxes of the TST series currently have dimensions variable that go from centre distances of 20 mm to 120 mm, however, at the moment, bigger sizes are planned.
TST – HD Series: This new series is available in bigger sizes, with customized centre distances.
ZAMBELLO Gearboxes for Counter-Rotating Parallel Twin-Screw Extruders
Although the range of gearboxes for counter-rotating twin-screw extruders used for medium, high and very high torques is already very wide, ZAMBELLO updates it constantly both with new sizes of standard products and customized gearboxes manufactured based on the needs of the customer.
NRB Series: The gearboxes of the NRB series have a horizontal shape (mounting position B3), which requires a connection to the electric motor by belts and pulleys. As a matter of fact, the reduction ratios available cover a ratio up to a maximum of i=25.
ZT3 Series: The gearboxes of the ZT3 series have approximately the same features as the NRB series, but have a vertical shape (mounting position B7). In this case, the connection between gearbox and electric motor is carried out by an elastic coupling. Due to the possibility to mount the electric motor in the U arrangement, the final result is a very compact extruder. Reduction ratios available go from i=14 to max i=80.
TST Series: The TST range (Twin Super Torque) is available in two versions: TST-H and TST- 2H. Both series offer very high performance rates.
TST – H series: The gearboxes of this series are designed for challenging applications, where a high torque is required, which is transmitted by means of a single reversing unit. The connection to the electric motor is obtained by means of an elastic joint. Reduction ratios available go from i=14 to max i=80.
TST – 2H Series: The gearboxes of the TST-2H series present the highest technology level, that sets them on the top position of the world market, suitable for applications of extremely high performance.
The transmission of the torque is obtained by means of a double reversing unit. Reduction ratios available go from i=14 to max i=80
ZAMBELLO Gearboxes for Counter-Rotating Conical Twin-Screw Extruders
As a completion of the range of gearboxes for counter-rotating extruders, Zambello proposes the new ZC3 gearboxes for conical twin-screw extruders.
This new series is available in entire range both in vertical and horizontal versions, as shown in the catalogue B1-14.
The essential feature of these gearboxes consists in also having grinded conical gearsin class AGMA 2015 – DIN 4. Like the entire range of Zambello, also the gearboxes for twin-screw conical extrudersof series ZC3 are distinguished by an extremely high transmissible torque
ZAMBELLO Gearboxes for Injection Moulding Machines
Confirming the great flexibility of its products, with the SERIES MNP3 ZAMBELLO supplies gearboxes both in standard and special versions, designed according to the customers’ specific requirements.
Specifically designed for the drive of plasticising screws for injection moulding machines, the gearboxes of the MNP3 series are suitable for transmitting high torques, accepting also very high input speeds at
very low noise levels and total performances over 95%.
The great axes distance between the drive (electric motor) and the output (threaded mounting and cylinder), which consists of 3 gear pairs, avoids any problems of interference with the various machine units.
The extreme precision during grinding and checking of the gears (according to the class AGMA 2015 – DIN 4) allows to match these gearboxes to very powerful electric motors at high revolutions (also over 3000rpm) offering low dimensions and weights.
For this reason, the ZAMBELLO gearbox for injection moulding machines has characteristics of extreme compactness and great efficacy in performance