We provide appraisals for everything from individual extrusion machines to entire manufacturing plants – each piece of equipment with its own criteria for valuation. If you are planning for extruder appraisal or selling a single screw extruder, the equipment specifications of significance are the same: we need to review all relevant considerations, from operational condition to capabilities and options on your machine.
Used Extrusion Machine Specifications
The information below offers a very clear idea of the specific information that is needed in order to accurately appraise the value of extrusion equipment.
Stock Number: ___________ Make: _______________ Model: _______________
Year: ____________ Sales Order Number: ____________ Serial Number: ___________
Diameter of the barrel: 1" 1.25” 1.5" 2.0" 2.5" 3.0" 3.5” 4.0" 4.5" 6.0" 8.0” Other _______
L/D Ratio:
Length over diameter of the barrel. This number also defines how many screw flights are in the barrel.
20:1 24:1 30:1 32:1 34:1 36:1 38:1 40:1 Other _________
Gearbox Ratio :__________
Typically, 10:1 at the fastest to 30:1 at the slowest for thermoplastic production.
Additional reduction in speed could also be changed with shives and belts. The overall output of the extruder screw is important to determine what types of plastics would work this the extruder
Gearbox Capacity: ________
Gearbox Make/Model: __________________
Centerline Height of the extruder barrel to the floor:_______
42.5” is the typical height. A lower measurement would be called a “lowboy extruder” and higher would be considered a “highboy extruder”
Feed Throat Shape: Round Square Rectangular
Feed Throat Dimensions :______
Specialty Feed Systems:
Tangential Feed
Ram-Stuffer-
using a pneumatic cylinder a ram stuffer will push light fluffy plastic into the flights of the screw. This is used to avoid bridging of material
Crammer Feeder :
Looks like an auger. It is vertically oriented over the feed throat with a conical screw to push material into the feed section. Wiper arms are also used to avoid material bridging.
Vented Barrel: Yes No Plugged Vent Location: ______
Cooling: Air Cooled With Fans Water-cooled jacket within heater bands.
Screw Type: Two Stage Barrier Mixing Type: ________
Barrel Flange: Bolt-On Clamp Present: Yes No
Motor/Drive
HP: ________
Motor/Drive Type: AC or DC
Main Motor RPM ________
Motor Make/Model ___________________ Drive Make/Model _________________________
Drive Cooling: AC Swamp None
Disconnect Amperage _______
Nameplate Amperage _______
Temperature Control Panel:
Barrel Zones The number of independent temperature controllers for the barrel. This would include a heat and a cool operation: _______
Screen Changer/Adapter/Die Zones This is the number of independent temperature controllers for after the barrel. Typically these are only for heat only operations. : ______
Controller Make/Model ___________
Extruder Control Relays: Solid State Mercury
Options:
Amp Gauges For the Temperature Control Zones
Extruder Motor Tachometer
Extruder Motor Amp Gauge - Drive
Speed Pot
Size of machine disconnect amperage _______
Get Your Plastic Extrusion Machinery Appraised
The list above is very detailed – that’s precisely the reason we offer onsite appraisals of extruders. Let us get the information, and the valuation, for you! By being on site, we can sometimes see the things of value that you may not, or we may be able to find information that you may not have available – and that can help determine the greatest potential value of your extruder. Aside from seeing the machine in person, photos are one of the most important tools for accurate appraisal of machinery. Collect the data above, or simply contact us for an on-site appraisal of your inspected or uninspected extruder today.