Diaphragm Ring
Knurled fixed-aperture diaphragm ring with a central through-bore.
Manufacturing Scope
Diaphragm Ring is a Opto-Mechanical Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀8–20 mm, lengths 4–6 mm, standard material Brass (also steel, stainless, brass or aluminium). Every variant's part code, dimension and tolerance is listed below; request an instant quote with the code you need.
The family is machined from ⌀20 mm bar stock; its longest variant is OPTA-DIA-20 at 6 mm. Besides turning, the family requires knurling. Bores in this family run ⌀2–12 mm. All of it is completed in a single setup, without the part leaving the machine.
The variant with the highest length-to-diameter ratio is OPTA-DIA-08: 4 mm long at ⌀8 mm, L/D 0.5. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to h7 tolerance; the smallest is OPTA-DIA-08 (⌀8 mm) and the largest OPTA-DIA-20 (⌀20 mm). The family includes knurled, bored variants. Custom sizes, tolerances or materials are produced to the part code on request.
This is a dimension schematic, not a manufacturing drawing. Dimensions match the catalog data; request a quote with the part code to confirm before production.
Code & Size Table
Code, dimensions and tolerance for all 10 variants.
| Code | Dia ⌀ | Length | Feature | Tolerance | Std | Unit price |
|---|---|---|---|---|---|---|
| OPTA-DIA-08 | ⌀8 | 4 mm | knurl · ⌀2 | h7 | aperture 2 mm | 26.29 ₺ |
| OPTA-DIA-10 | ⌀10 | 4 mm | knurl · ⌀3 | h7 | aperture 3 mm | 27.44 ₺ |
| OPTA-DIA-12 | ⌀12 | 4.5 mm | knurl · ⌀4 | h7 | aperture 4 mm | 29.52 ₺ |
| OPTA-DIA-13 | ⌀13 | 4.5 mm | knurl · ⌀5 | h7 | aperture 5 mm | 30.19 ₺ |
| OPTA-DIA-14 | ⌀14 | 5 mm | knurl · ⌀6 | h7 | aperture 6 mm | 31.74 ₺ |
| OPTA-DIA-15 | ⌀15 | 5 mm | knurl · ⌀7 | h7 | aperture 7 mm | 32.46 ₺ |
| OPTA-DIA-16 | ⌀16 | 5 mm | knurl · ⌀8 | h7 | aperture 8 mm | 33.20 ₺ |
| OPTA-DIA-17 | ⌀17 | 5.5 mm | knurl · ⌀9 | h7 | aperture 9 mm | 34.97 ₺ |
| OPTA-DIA-18 | ⌀18 | 5.5 mm | knurl · ⌀10 | h7 | aperture 10 mm | 35.78 ₺ |
| OPTA-DIA-20 | ⌀20 | 6 mm | knurl · ⌀12 | h7 | aperture 12 mm | 38.60 ₺ |
Brass · for 100 pcs · estimated unit price, valid 7 days · excl. VAT · Contact us for a firm quote.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. For custom sizes/tolerances, contact us with the part code.
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