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March 1, 2002

1 Min Read
Gearless single-screw extruder features new drive design and pelletizer


PP_Reifenhauser_extruder.jpg A new single-screw extruder has been designed to be 20 percent shorter and lower in weight in comparison with conventional extruders. The drive motor is built for continuous operation and is directly mounted on the screw shaft, making conventional speed reduction gears and belt drives unnecessary.

A maintenance-free design with a reduced number of components reportedly improves uptime during production. The conventional oil cooling system has been replaced with a water cooling system, the bearings are lubricated with grease, and there are no repeated oil lubrications. The extruder screw can be removed through the front in the extrusion direction or through the rear through the drive unit. The extruder is designed for coextrusion lines, compact laboratory applications, mono use for low outputs, and recycling processes. When used as a coextruder it can be mounted in various positions.

The extruder has a screw diameter of 25 mm, a screw length of 25:1 L/D, a 4-kW drive with an a-c torque motor, and three heating and air cooling zones. Screws are available in diameters up to 60 mm.

Reifenhauser Inc.
Ipswich, MA
(978) 412-9700
www.reifenhauser.com

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