GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS

Product catalog summary

Overview: The GEMINI® Conical (GC) Twin Screw Extruders are American-designed machines built for high-demand service, offering maximum productivity and minimal maintenance. They feature a robust gearbox with over twice the torque capacity and thrust bearing life compared to competitors. The extruders are equipped with low RPM screws and internal sealed water-cooling systems for processing RPVC powder formulations, along with high-efficiency Thermafin air-cooled barrel heaters.

Specifications: The extruder line includes models GC-40, GC-61, and GC-65, each designed for specific applications such as custom window profiles, fence profiles, and materials development. Key specifications include:

Screw Diameter: Ranges from 1.6/3.4 in. (40/86mm) for GC-40 to 2.5/5.1 in. (65/165mm) for GC-65.
Length: 34.9 in. (886mm) for GC-40 and 51.8 in. (1,316mm) for GC-61 and GC-65.
Maximum RPM: 38 for GC-40 and 26 for GC-61 and GC-65.
Drive: Flux Vector AC with varying horsepower and kilowatt ratings.
Gearbox Ratio: 17.56:1 for GC-40 and 30.1:5 for GC-61 and GC-65.
Thrust Bearing Life: Up to 84,000 hours at 30 RPM for GC-61 and GC-65.

Electrical and Heating: The extruders have a total connected load ranging from 72 A (56 kW) for GC-40 to 150 A (115 kW) for GC-65. They feature multiple barrel and die zones with specific heating capacities.

Vacuum Venting: All models have a pump rating and capacity of 15 CFM at 29 in. in Hg.

Dimensions and Output: The extruders vary in size and weight, with approximate outputs ranging from 50-180 lbs./hr (20-80 kg/hr) for GC-40 to 120-600 lbs./hr (54-272 kg/hr) for GC-65.

Contact Information: Davis-Standard, LLC is headquartered in Pawcatuck, CT, USA, with additional locations in the UK and China.

Catalog excerpts

GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS-1

PROFILE GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS Davis-Standard’s Gemini® series conical twin screw extruders provide pipe and profile processors with processing flexibility, low maintenance, and maximum productivity. This extruder line includes the GC-40 (40mm), GC-61 (61mm), and GC-65 (65mm) extruders, ACC designed with a compact machine configuration on a single base with alternate drive positioning and sizing. These extruders are engineered for custom window profiles, fence profiles, vertical blinds, capstock coextrusion and materials development, as well as quality control laboratory usage. • irst American-designed conical twins built for demanding service, F maximum productivity, and minimum maintenance. • ugged, high performance gearbox with over twice the torque R capacity and thrust bearing life of competitive models. • ow rpm screws with internal sealed water-cooling systems L for processing RPVC powder formulations. • igh-efficiency Thermafin air-cooled barrel heaters and sealed, water-tempered H screws for simple operation, low maintenance, and energy savings.

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GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS-2

GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS cont. MACHINE DESIGN SPECIFICATIONS * Dependant upon options selected. MACHINE DESIGN DIMENSIONS Model DAVIS-STANDARD, LLC #1 Extrusion Drive Pawcatuck, CT 06379-2313 | UNITED STATES Tel: +860-599-1010 | Fax: +860-599-6258 D-S BROOKES LIMITED 18A Brewins Way | Hurst Business Park Brierley Hill | West Midlands | DY5 1UF I UNITED KINGDOM Tel: +44 (0) 1384 471930 | Fax: +44 (0) 1384 671734 DAVIS-STANDARD - CHINA Room 6717, Apollo Building | 1440 Yan An Road (M), Shanghai 200040 | P.R. CHINA Tel: +86-21-6103 1713

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