Precision CNC Machining for PMMA (Acrylic) – Crystal‑Clear & UV‑Resistant Parts
PMMA (Polymethyl Methacrylate), commonly known as acrylic, is a transparent thermoplastic with excellent optical clarity, UV resistance, and good impact strength (much higher than glass). It is widely used as a lightweight, shatter‑resistant alternative to glass. At Ranglink, we specialize in CNC machining of PMMA for prototypes and production runs – from optical lenses to protective shields and display components.
– 92% light transmission (clear as glass).
– Outstanding UV resistance – does not yellow outdoors.
– 10 times more impact resistant than glass.
– Easy to machine, polish, and glue.
– Available in clear, tinted, and opaque colors.
Key Properties of PMMA (Acrylic)
| Property | Value / Rating |
|---|---|
| Light transmission (clear grade) | 92% |
| Refractive index | 1.49 |
| Tensile strength | ~70 MPa |
| Flexural strength | ~90 MPa |
| Impact strength (Izod notched) | ~1.6 kJ/m² (15x stronger than glass) |
| Continuous use temperature | –40°C to 70°C |
| Heat deflection temperature (1.82 MPa) | ~95°C |
| Density | 1.19 g/cm³ |
| Water absorption (24h) | 0.3% |
| Machinability rating | Excellent (similar to brass, but avoid overheating) |
Our CNC Machining Capabilities for PMMA (Acrylic)
| Parameter | Specification |
|---|---|
| Max part size (milling) | 1100 × 600 × 500 mm |
| Max turning diameter | Ø230 mm |
| Standard tolerance | ±0.05 mm |
| Precision tolerance | ±0.005 mm (on request) |
| Surface roughness (as machined) | Ra 0.8–1.6 μm |
| Lead time (prototypes) | 3 business days |
Processes available: CNC Milling (3‑axis, 4‑axis, full 5‑axis) · CNC Turning (live tooling) · CNC Drilling · Laser cutting (for thin sheets) · Edge polishing / flame polishing.
Surface Treatment & Finishing Options for PMMA
Note: For optical applications, flame or vapor polishing restores full transparency after machining. Avoid aggressive solvents (acetone, alcohol) which can crack acrylic.
Common Applications of CNC Machined PMMA (Acrylic)
Quality Assurance
- ISO 9001:2015 certified – audited quality management system.
- Full traceability – material certificates and inspection reports.
- Inspection equipment – CMM, optical comparator, gloss meter, calipers.
- Every part inspected – we verify optical clarity, dimensional accuracy, and surface finish.
Why Choose Ranglink for PMMA (Acrylic) CNC Machining?
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