Custom Plastic Lens Holders via CNC Machining
Plastic lens holders position and secure optical elements in equipment where metal parts would introduce conductivity, weight, or corrosion issues. CNC machining produces these holders directly from solid polymer stock, allowing non-standard diameters, mounting flanges, and thread patterns without tooling investment.
- Bore Tolerance
- ±0.05 mm
- Flange Flatness
- 0.03 mm
- Axes
- 3 & 5
Machining Process for Polymer Lens Holders
A controlled sequence keeps the optical seat concentric with the mounting face.
-
Roughing the outer diameter
CNC milling and turning remove material in controlled passes to establish the outer profile and mounting features.
-
Boring the optical seat
The inner bore is bored to the required concentricity for accurate lens registration.
-
Finishing threads, slots and holes
Drilling and tapping create attachment holes and set-screw locations; threads or slots are finished last. This supports both single prototypes and repeat batches where molded tooling is not yet justified.
Production Capabilities at PlasticCNCPro
We machine lens holders from stock shapes on 3- and 5-axis centers, holding bore diameters to ±0.05 mm and flange flatness to 0.03 mm.
Integrated Features
Threaded inserts or press-fit features can be added in the same setup.
Deburring & Polishing
Parts receive deburring and, when specified, light polishing on optical contact surfaces.
Dimensional Reports
Each order includes reports for critical features such as concentricity between bore and mounting face.
Prototype to Batch
From single prototypes to repeat production runs, without molded tooling investment.
Materials and Typical Specifications
Common polymers for lens holders along with achievable parameters. Customers specify material grade, color, and any antistatic or wear additives at quotation.
| Material | Max Service Temp (°C) | Typical Tolerance (mm) | Surface Finish (Ra µm) | Common Lens Holder Uses |
|---|---|---|---|---|
| POM/Acetal | 100 | ±0.05 | 1.6 | General automation mounts |
| PEEK | 250 | ±0.03 | 0.8 | High-temperature or chemical exposure |
| PPS | 220 | ±0.05 | 1.6 | Electrical insulation near optics |
| PTFE | 260 | ±0.08 | 3.2 | Low-friction sliding or alignment rings |
| PEI | 170 | ±0.05 | 1.6 | Transparent or high-strength applications |
Project Fit and Design Considerations
Lens holders machined from engineering plastics suit equipment where weight reduction, electrical isolation, or chemical compatibility matters.
Prototypes
Allow verification of fit with specific lens diameters before committing to larger volumes.
Low-Volume Runs
Replace obsolete molded parts or support custom machinery builds.
GD&T Review
When drawings include callouts for perpendicularity or runout, we review manufacturability and suggest adjustments that maintain function while reducing cycle time.
Next Step for Pricing and Lead Time
Send your 2D drawing or 3D model, required material, annual quantity estimate, and any special packaging or marking instructions. We return a quotation that lists unit price, sample cost if requested, and estimated delivery.
Contact: info@plasticcncpro.com
Request a Lens Holder Quotation
Share your drawing or model, material grade, and quantity estimate. Our team reviews manufacturability and returns pricing with lead time.
- 2D drawing or 3D model
- Required material and grade
- Annual quantity estimate
- Packaging or marking instructions