Cable Overmolding Machines

Overmolding cable assemblies enhances the durability, appearance, and environmental integrity of an electrical or mechanical cable assembly. The weakest part of the electrical cable assembly is the point at which the wires are attached to the electrical contacts or pins with the individual wires. Typically this connection is crimped or soldered and has limited capability to withstand pulling or flexing forces that the assembly may be subject to. By molding around the connection points with a thermo plastic the connection points are relieved of the strain that could potentially cause a failure. In addition to enhancing the mechanical integrity the molded back end between the connector and the cable can seal the cable assembly from invasive liquids that could potentially cause a short between cables or pins. The right cable overmolding machine provides the opportunity to enhance the aesthetic appearance of the cable assembly and also offers the opportunity to include product logos and part numbers.

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Effective Strain Relief  With Cable Overmolding

The individual soldered or crimped connections between the connector pins or electrical contacts is a potential point of failure especially if the cable is subject to accidental pulling or continuous flexing.

Cable overmolding of the back end of the connector at the junction point between the connection points and incoming multi-conductor cable provides a robust strain relief:

Eliminate mechanical failures due to incidental pulling of cable

Reduce failures in continuous flexing applications

Reduce failures of marginal electrical connections by solidifying connection point

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Aesthetically Improve the appearance of your Cable Assembly

An overmold on the backend of your plug can be of any shape or color you desire. A sleek transition from plug to cable can make your product look rugged and fit into the design of your overall product.

Improve branding with overmold color and logo

Improve look of ruggedness and integrity

Design to fit overall product look

Part numbers or descriptions can be added

Want to speed up time to market or reduce risk involved with expensive injection molding tooling?

MPM Low Volume Injection Molding Machines are Trusted by Businesses Nationwide

MPM injection molding machines are ideal for cable overmolding applications. A wide range of industries use our machines, including medical, automotive, consumer products, and more. With the ability to use the same plastic grade as a multi-cavity mold, engineers can test plastic blends and manufacturing optimization, and marketers can test designs and colors.

Find the Perfect Fit

Our Application Engineering team can help you specify the proper MPM machine for your overmolding application. These injection molding machines range from portable benchtop, to floor standing, to vertical, to high precision servo controlled types that are suitable for a wide variety of applications. Medical cable assemblies, military cable assemblies, seismic field splicing or repair, electronic cable assemblies, or mechanical assemblies are all very good candidates for MPM machinery and tooling.


Benchtop Injection Molding MachineModel 45
Benchtop Injection Molding MachineModel 50
Benchtop Injection Molding MachineModel 55/55P/55E
Low Volume Injection Molding Machine

Model 60
Low Volume Injection Molding MachineModel 70
Low Volume Injection Molding MachineModel 75
Pneumatic X
Hydraulic X X X X X
Electric X
Vertical Orientation Clamp, Inject Clamp, Inject Clamp, Inject Inject Clamp, Inject Clamp
Horizontal Orientation Clamp Inject
Max Shot Size (oz) 0.5-1.50, 3.0 0.5-1.50 1.0, 2.0, 4.0 1.0, 2.0 1.0, 2.0 1.0, 2.0
Clamping Force (Tons) 12.0, 16.0 12.0 12.0[1][2]; 18.0[4] 10.0 10.0 12.5
Injection Pressure (PSI) 7,068-20,480 7,068-20,480 16,065[1]; 16,593[2]; 11,398[4] 16,000^[1]; 27,040[2] 16,065[1]; 16,593[2] 16,065[1]; 16,593[2]
Screw Displacement (cubic in) N/A N/A 1.8[1]; 3.98[2]; 7.2[4] 1.8[1]; 3.98[2] 1.8[1]; 3.98[2] 1.8[1]; 3.98[2]
Plasticizing Capacity (lb/hr) 10 10.0 17.5[1]; 18.5[2][4] 28.0[1]; 45.0[2] 28.0[1]; 45.0[2] 28.0[1]; 45.0[2]
Max Heat (deg F, approx) 625 625 700[1][2]; 650[4] 700 700 700
Barrel/Cylinder Heater Wattage (W) 1050 1050 2100[1]; 2700[2][4] 2400[1]; 3000[2] 2400[1]; 3000[2] 2400[1]; 3000[2]
Nozzle Heater Wattage (W) 110, 150[3] 110 110 110 110 110
Recommended Molding Area (sq in) 6.0; 8.0[3] 6.0 6.0[1][2]; 9.0[4] 5.0 5.0 6.25
Standard Mold Size (WxLxH – in) 2.13 x 7 x 3 2.13 x 7 x 3 2.13 x 7 x 3 8.0 x 6.0 x 8.0 8.0 x 8.0 x 6.5 8.0 x 6.0 x 6.5
Max Mold Dimensions – (WxLxH – in) Consult Factory Consult Factory 6.0 x 8.5 x 5.5 8.0 x 8.0 DME 8.0 x 8.0 DME 8.0 x 8.0 DME
Power Req 10A 30A 30A 40A 40A 40A
115V 230V (1/3 Phase) 230V (1/3 Phase) 230V (1/3 Ph), 480V 230V (1/3 Ph), 480V 230V (1/3 Ph), 480V
Power Comsumption (Amps) 10.0 15.0 19.5[1]; 22.15[2][4] 30.1 26.7 26.7
Overall Dimensions – WxLxH TBD TBD TBD TBD TBD TBD
[#] denotes shot specific specs
# denotes shot size
If [#] not specified spec applies to all

Popular Options

C-Frame X X X X X
Mold Heat X X X X X X
Part Ejection X X X

Models 55/55P/55E

55 – Econmical Siemens PLC/HMI controlled reciprocating screw, bench-top injection molding machine
55P – Siemens PLC/HMI controlled with recipe management, proportional pressure control and linear potentiometer tracking of screw displacement
55E – Siemens based servo injection molding machine with speed based injection profiling, recipe management and quiet operation

Do You Have a Question About Cable Overmolding Machine Product Specifications or Capabilities? Contact Us!

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