Adjustment Collar
Knurled focus adjustment collar with a side lock-screw bore.
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 | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| OPTA-ADC-08 | 8 | 6 | knurl · ⌀5 | H8 · ⌀5: +0.018/0 | side M3 locking screw |
| OPTA-ADC-10 | 10 | 7 | knurl · ⌀6 | H8 · ⌀6: +0.018/0 | side M3 locking screw |
| OPTA-ADC-11 | 11 | 7 | knurl · ⌀7 | H8 · ⌀7: +0.022/0 | side M3 locking screw |
| OPTA-ADC-12 | 12 | 8 | knurl · ⌀8 | H8 · ⌀8: +0.022/0 | side M4 locking screw |
| OPTA-ADC-13 | 13 | 8 | knurl · ⌀9 | H8 · ⌀9: +0.022/0 | side M4 locking screw |
| OPTA-ADC-15 | 15 | 9 | knurl · ⌀11 | H8 · ⌀11: +0.027/0 | side M4 locking screw |
| OPTA-ADC-14F | 16 | 10 | knurl · ⌀10 · 2 steps | H8 · ⌀10: +0.022/0 | flanged, side M4 locking screw |
| OPTA-ADC-16 | 16 | 9 | knurl · ⌀12 | H8 · ⌀12: +0.027/0 | side M5 locking screw |
| OPTA-ADC-18 | 18 | 10 | knurl · ⌀14 | H8 · ⌀14: +0.027/0 | side M5 locking screw |
| OPTA-ADC-20 | 20 | 11 | knurl · ⌀16 | H8 · ⌀16: +0.027/0 | side M5 locking screw |
Prices are for approved members.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. Deviations (mm) are given for the nominal diameter according to the ISO 286-2 tables; thread tolerances (6g/6H) are to ISO 965. For custom sizes/tolerances, contact us with the part code.
Manufacturing Scope
Adjustment Collar is a Opto-Mechanical Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀8–20 mm, lengths 6–11 mm, standard material Aluminium (also steel, stainless steel or brass). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀20 mm bar stock; its longest variant is OPTA-ADC-20 at 11 mm. Besides turning, the family requires knurling. Bores in this family run ⌀5–16 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-ADC-08: 6 mm long at ⌀8 mm, L/D 0.8. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to H8 tolerance; the smallest is OPTA-ADC-08 (⌀8 mm) and the largest OPTA-ADC-20 (⌀20 mm). The family includes knurled, bored, multi-step variants. Custom sizes, tolerances or materials are produced to the part code on request.
Need a size that isn't listed? We machine to your drawing — CNC contract machining. How these parts are made: What is a Swiss-type lathe?
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