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Gemini Conical Extruders

Product catalog summary

Overview: The Gemini® Conical (GC) Twin Screw Extruders are designed for high-demand service, offering maximum productivity and minimal maintenance. These extruders feature a robust gearbox with superior torque capacity and thrust bearing life compared to competitors. They are equipped with low RPM screws and internal sealed water-cooling systems for processing RPVC powder formulations.

Key Features:

High-efficiency Thermafin air-cooled barrel heaters and sealed, water-tempered screws for easy operation and energy savings.
Available models include GC-40, GC-61, and GC-65, each designed for specific applications such as custom window profiles, fence profiles, and materials development.

Machine Design Specifications:

Model GC-40: Screw diameter 1.6/3.4 in., length 34.9 in., max speed 38 RPM, drive 20 HP, gearbox ratio 17.56:1, max torque 1,400 ft-lbs.
Model GC-61: Screw diameter 2.4/5.1 in., length 51.8 in., max speed 26 RPM, drive 40 HP, gearbox ratio 30.1:5, max torque 6,125 ft-lbs.
Model GC-65: Screw diameter 2.5/5.1 in., length 51.8 in., max speed 26 RPM, drive 50 HP, gearbox ratio 30.1:5, max torque 6,125 ft-lbs.

Electrical and Heating Specifications:

Total connected load ranges from 72 A (56 kW) to 150 A (115 kW) depending on the model.
Barrel heating capacity ranges from 14 kW to 32 kW.
Die heating capacity is 8.2 kW to 11.8 kW.

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

General Dimensions:

Model GC-40: Weight 5,600 lbs., output 50-180 lbs./hr.
Models GC-61 & GC-65: Weight 9,500 lbs., output 100-600 lbs./hr.

Contact Information: Davis-Standard, LLC, USA; D-S Brookes Limited, UK; Davis-Standard China.

Catalog excerpts

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. At A Glance • American-designed conical twins built for demanding service, First maximum productivity, and minimum maintenance. • Rugged, high performance gearbox with over twice the torque capacity and thrust bearing life of competitive models. • rpm screws with internal sealed water-cooling systems Low for processing RPVC powder formulations. • High-efficiency Thermafin air-cooled barrel heaters and sealed, water-tempered screws for simple operation, low maintenance, and energy savings. www.davis-standard.com

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GEMINI® CONICAL (GC) TWIN SCREW EXTRUDERS cont. MACHINE DESIGN SPECIFICATIONS GC-40 GC-61 GC-65 1.6/3.4 in. (40/86mm) 2.4/5.1 in. (61/130mm) 2.5/5.1 in. (65/165mm) 34.9 in. (886mm) 51.8 in. (1,316mm) 51.8 in. (1,316mm) 38 26 26 Sealed in, self-regulating water or circulating oil Sealed in, self-regulating water or circulating oil Sealed in, self-regulating water or circulating oil Flux Vector AC, 1750 rpm, HP (kW) 20 (15) 40 (30) 50 (37) Ratio 17.56:1 30.1:5 30.1:5 Model Diameter, Front/Rear Screws Length Speed (Maximum RPM) Drive Tempering Lubrication Forced Splash Splash 20 (15) @ 38 RPM 78...

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Gemini Conical Extruders

Gemini Conical Extruders

Catalog excerpts

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