Lens Retainer Ring
Internally threaded knurled retaining ring securing a lens in its seat.
Manufacturing Scope
Lens Retainer Ring is a Opto-Mechanical Parts family precision-turned on a Goodway SW-20, covering 12 variants — diameters ⌀8–20 mm, lengths 3–10 mm, standard material Aluminium (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 OPTB-LRT-12 at 10 mm. Besides turning, the family requires knurling. Bores in this family run ⌀5–16.5 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 OPTB-LRT-12: 10 mm long at ⌀20 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 6H tolerance; the smallest is OPTB-LRT-01 (⌀8 mm) and the largest OPTB-LRT-12 (⌀20 mm). The family includes knurled, bored, multi-step 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 12 variants.
| Code | Dia ⌀ | Length | Feature | Tolerance | Std | Unit price |
|---|---|---|---|---|---|---|
| OPTB-LRT-01 | ⌀8 | 3 mm | knurl · ⌀5 | 6H | M6x0.5 internal thread | 22.17 ₺ |
| OPTB-LRT-02 | ⌀10 | 3.5 mm | knurl · ⌀7 | 6H | M8x0.5 internal thread | 22.89 ₺ |
| OPTB-LRT-03 | ⌀12 | 4 mm | knurl · ⌀9 | 6H | M10x0.5 internal thread | 23.63 ₺ |
| OPTB-LRT-04 | ⌀12 | 5 mm | knurl · ⌀9 | 6H | M10x0.5 internal thread, wide | 24.28 ₺ |
| OPTB-LRT-05 | ⌀14 | 4 mm | knurl · ⌀11 | 6H | M12x0.5 internal thread | 24.07 ₺ |
| OPTB-LRT-06 | ⌀14 | 6 mm | knurl · ⌀11 | 6H | M12x0.5 internal thread, coarse | 25.40 ₺ |
| OPTB-LRT-07 | ⌀16 | 5 mm | knurl · ⌀12.5 | 6H | M14x0.5 internal thread | 25.22 ₺ |
| OPTB-LRT-08 | ⌀16 | 7 mm | knurl · ⌀12.5 · 2 steps | 6H | shouldered, M14x0.5 | 26.67 ₺ |
| OPTB-LRT-09 | ⌀18 | 6 mm | knurl · ⌀14.5 | 6H | M16x0.5 internal thread | 26.41 ₺ |
| OPTB-LRT-10 | ⌀18 | 7 mm | knurl · ⌀14.5 | 6H | M16x0.5 internal thread, coarse | 27.11 ₺ |
| OPTB-LRT-11 | ⌀20 | 6 mm | knurl · ⌀16.5 | 6H | M18x0.5 internal thread | 26.92 ₺ |
| OPTB-LRT-12 | ⌀20 | 10 mm | knurl · ⌀16.5 · 2 steps | 6H | shouldered retainer, M18x0.5 | 29.91 ₺ |
Aluminium · 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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