Custom Plastic Protective Guards for Industrial Applications
Plastic protective guards shield moving parts, sensors, and electrical assemblies from impact, debris, and chemical exposure. They are widely used in automation lines, semiconductor handling equipment, and fluid systems where metal alternatives create noise, corrosion, or weight issues.
- Part Length
- 20–1200 mm
- Hole Tolerance
- ±0.05 mm
- Finish
- 0.8 µm Ra
- Sample Lead Time
- 7–12 days
Materials
POM · PEEK · PC
Batch Size
1 – 500 pcs
Common Materials and Performance Requirements
Buyers typically request guards in POM, UHMW-PE, HDPE, polycarbonate, or PEEK. We review the operating environment — temperature range, chemical contact, and impact frequency — before recommending a grade.
POM
Dimensional stability under sustained load; suited to structural guard bodies and mounting plates.
UHMW-PE / HDPE
Low-friction sliding contact surfaces, impact absorption, and chemical resistance at low weight.
Polycarbonate
Transparent viewing windows and covers where visibility of the guarded assembly is required.
PEEK
For repeated cleaning cycles, elevated temperatures, and aggressive media exposure.
CNC Machining Capabilities Applied to Guards
Our equipment handles milling, turning, and secondary operations on parts up to 1200 mm in length. Threaded inserts, counterbores, and edge chamfers are added in the same setup to maintain alignment. Tolerances on critical mounting surfaces reach ±0.05 mm, with surface finishes from as-machined to 0.8 µm Ra depending on whether the guard contacts moving product or requires easy cleaning.
Geometry
Flat Panels
Plates with mounting hole patterns and true-position tolerances for repeatable assembly.
Geometry
Contoured Covers
Covers with internal ribs for stiffness without added weight or material change.
Geometry
Cylindrical Sleeves
Turned sleeves with slots or viewing windows for rotating and linear shafts.
| Parameter | Typical Range | Notes |
|---|---|---|
| Part size (length) | 20 mm – 1200 mm | Larger panels quoted separately |
| Wall thickness | 3 mm – 50 mm | Thinner sections reviewed for warping |
| Hole position tolerance | ±0.05 mm | True position for mounting patterns |
| Surface roughness | 0.8 – 3.2 µm Ra | Polish available on request |
| Quantity per order | 1 – 500 pieces | Prototypes and repeat batches |
| Lead time (samples) | 7–12 working days | After drawing approval |
Project Types We Support
Equipment builders replace fabricated metal guards with machined plastic versions to reduce weight and eliminate corrosion. Automation integrators order small batches of custom covers when standard catalog parts do not fit new robot cells. Maintenance teams request replacement guards for older machinery where original drawings are unavailable — we reverse-engineer from samples.
Guards for chemical processing lines often require PVDF or PTFE to resist aggressive media, while semiconductor handling applications frequently specify antistatic grades to prevent particle attraction.
-
Equipment Builders
Metal-to-plastic guard conversion for lower weight and corrosion elimination.
-
Automation Integrators
Small batches of custom covers for new robot cells where catalog parts do not fit.
-
Maintenance Teams
Replacement guards for legacy machinery, reverse-engineered from physical samples.
-
Chemical & Semiconductor Lines
PVDF or PTFE for aggressive media; antistatic grades to limit particle attraction.
Design Review
Material and Geometry Review Process
Upon receipt of a 2D drawing or 3D model we check wall thickness uniformity, draft angles where needed, and potential stress points around mounting holes. When a design shows thin unsupported sections we suggest local thickening or added ribs rather than changing material.
Wall thickness check
Draft angle review
Stress point analysis
This step prevents distortion during machining and keeps parts within tolerance after delivery.
Request a Quotation
Send your drawing, material preference, quantity, and any special packaging or marking requirements. We reply with a fixed price and estimated delivery based on current material stock and machine availability.
- info@plasticcncpro.com
- Sample Shipment Address
- 29 Fuxing Road, Dongguan City, Guangdong Province, China