Members ggr1 Posted March 23, 2023 Members Share Posted March 23, 2023 For sale is a Model 55 MiniJector Electro-Matic injection molding machine, it uses a reciprocating screw plasticizing injection unit. The machine utilizes the same self-clamping “V” mold system used on plunger type MiniJectors but rather than depending on injection ram force the Model55 uses an independent short stroke hydraulic cylinder to generate that force. This permits full clamp force independent of injection pressure, Excellent lab machine new cost over 40K This Model55 requires only 230-volt single phase power and requires no more 3.5 sq. ft of bench space. It has a self-contained hydraulic power unit with a 5.4-gallon reservoir with 2 HP 1725 RPM motor driving a 2.3 GPM gear pump. Manual adjustments are provided for screw speed, back pressure, and injection pressure, and injection speed. MINIJECTOR Injection Molding Machines represent more than 40 years of experience in designing and building quality, plastic injection molding machinery. More about the machine: 700 °F MAX HEAT 7.00” x 3.00” x 2.125” MAX MOLD 1ounce INJECTION TYPE Hydraulic CLAMPING PRESSURE (TONS) 11.75 MAX INJECTION PRESSURE (PSI) 16,593 220 V Single Phase 20.5” x 27.0” x 45.0” Machine Diamensions Reciprocating screw Manual setpoint adjustment Three heating zones Specifications (Specifications may change without notice) 55-1 55-2 Screw Diameter-inches .875 1.125 Screw Stroke-inches 3.0 4.00 Screw displacement-cubic inches 1.80 3.98 Maximum shot size-ounces polystyrene 1.0 2.15 Maximum Injection Pressure PSI 16,065 16,593 Screw L/D (no. of turns) 15:1 15:1 Maximum Screw RPM 172 106 Maximum Screw Torque-Lb. Inch 852 1765 Plasticizing Capacity-lbs per hour 17.5 18.5 Screw Recovery Rate-ounces per sec .077 .082 Maximum Nozzle discharge rate-cubic in./sec 1.13 1.09 Barrel wattage 2100 2700 Nozzle wattage 150 150 Power consumption-AMPS (230V single phase) 19.5 22.15 Approx. clamping pressure-tons 11.75 Max. recommended molding area-sq. in 6.0 Mold ejection force -lbs 3313 Max. mold size W x L x H-in 2.13 x 7 x 3 Pump Delivery-GPM 2.3 Motor HP @ 1725 RPM 2.0 Reservoir capacity-gals. 5.4 Hydraulic system pressure-PSI 2050 Machine shipping weight 650Lbs. Overall dimensions W x L x H-in 20.5 x 27.0 x 45.0 The low price of the MINIJECTOR combined with its low tooling costs, make small production runs of 100 pieces as economically efficient and practical as runs of thousands. Typical applications would be: prototypes of new or experimental parts,color mix testing, insert molding, plus traditional ATSM tensile specimens. Insert and loose core molding can be performed economically on the MINIJECTOR. Insert molding involves molding plastic around a metal insert or a previously molded plastic article to form a finished assembly. Loose cores are metal forms inserted into the mold prior to molding which produce hollow portions in the finished part. The beauty of insert molding using the “V” molds is that the insert or loose core can be placed in the mold; the two mold halves assembled and the entire assembly held in one’s hand prior to placing in the machine. This permits molding around very fragile inserts that could not be safely molded using machines with high clamping pressure. Electro-Matic carries a full line of spare parts, technical manuals and engineering suppose for these and the thousands of older MINIJECTOR machines still in use after many years of satisfactory service Its going for asking $35,500 USD but I'm open to a reasonable offer from a serious buyer. If you want it do kindly send me a PM or reach me via mail equipments at protonmail dot com Thank you for looking.........!!! Quote Link to comment Share on other sites More sharing options...
Members ggr1 Posted September 20, 2023 Author Members Share Posted September 20, 2023 Available for sale with a reduced price $34K OBO, thanks Quote Link to comment Share on other sites More sharing options...
Members ggr1 Posted December 4, 2023 Author Members Share Posted December 4, 2023 Make a reasonable offer for this Quote Link to comment Share on other sites More sharing options...
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