Industrial automation is a demanding territory for injection-molded plastic components. Robots and automated systems operate under continuous mechanical stress, thermal cycling, exposure to lubricants and cleaning agents, and electromagnetic interference (EMI), which punish weak material choices. At the same time, automation OEM design teams are under pressure to reduce weight, consolidate parts, and compress development timelines.
Getting plastic components right in this environment is an engineering decision, one that starts at the design stage and requires a manufacturing partner with the polymer expertise to support it.
The industrial automation market is expanding rapidly, which means component requirements are growing with it. That growth is pushing teams to develop systems with more sensors, more actuators, more integrated electronics, and more plastic components carrying structural, thermal, and sealing loads they wouldn’t have been assigned five years ago.
The engineering challenge embedded in that growth means systems become more capable while performance expectations on individual components rise with them. A sensor housing that tolerated modest vibration in a conveyor application now needs to withstand the dynamic loads of a six-axis robot arm. A structural bracket that was sized for a fixed gantry now needs to function in a collaborative robot environment where cycle rates and collision events create load cases that didn’t exist in the original spec.
Material selection is a design decision with downstream consequences.
The most common mistake in automation component specification is treating material selection as a substitution exercise, picking whatever worked on the last program, and assuming it will transfer. It rarely does without testing, and by the time the failure mode surfaces, the tooling is cut, and the schedule is committed.
Not every engineering plastic performs equally across the range of conditions in industrial automation.
Here’s how the most frequently specified materials map to application requirements:
| | Preferred Material | Key Property | Common Application |
|---|---|---|---|
| Housings & Enclosures | Polycarbonate (PC) | Impact resistance, clarity | Sensor covers, IoT device shells |
| Structural Brackets | Glass-filled Nylon (PA66-GF) | Stiffness-to-weight ratio | Robot arm mounts, chassis frames |
| Wear-Contact Parts | Acetal (POM) | Low friction, dimensional stability | Gears, bushings, guide rails |
| High-Temp Components | PEEK or PEI | Heat & chemical resistance | Pneumatic fittings, actuator parts |
| Integrated Assemblies | PC/ABS or overmolded hybrid | Design flexibility, surface finish | Control panels, grip interfaces |
Material selection plays a defining role in how a project takes shape from specification through execution. Rather than being an isolated choice, it establishes the parameters that guide performance, coordination, and long-term outcomes across multiple stages of the process.
The right material decision is a structured process that aligns technical requirements with project conditions. It brings together performance criteria, environmental factors, and system compatibility to ensure the selected material integrates effectively within the overall design.
By defining these factors early, material selection becomes a coordinated decision that supports consistency from specification through execution.
The best time to engage a manufacturing partner is before the tool is cut, ideally during design review, when material choices, geometry decisions, and tolerance strategy still have room to move. If you’re specifying plastic components for an industrial automation system and want an engineering review before committing to tooling, talk to DWE Plastics first.
