Pivot Arbor
Double-tapered micro arbor with cone tips for watch pivots.
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 |
|---|---|---|---|---|---|
| MIKA-PVT-10 | 1 | 18 | taper | h5 | — |
| MIKA-PVT-12 | 1.2 | 22 | taper | h5 | — |
| MIKA-PVT-15 | 1.5 | 24 | taper | h5 | — |
| MIKA-PVT-18 | 1.8 | 28 | taper | h5 | — |
| MIKA-PVT-20 | 2 | 32 | taper | h6 | — |
| MIKA-PVT-25 | 2.5 | 36 | taper | h6 | — |
| MIKA-PVT-30 | 3 | 42 | taper | h6 | — |
| MIKA-PVT-35 | 3.5 | 48 | taper | h6 · ⌀3.5: 0/−0.008 | — |
| MIKA-PVT-40 | 4 | 54 | taper | h6 · ⌀4: 0/−0.008 | — |
| MIKA-PVT-50 | 5 | 64 | taper | h6 · ⌀5: 0/−0.008 | — |
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
Pivot Arbor is a Micro & Watch Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀1–5 mm, lengths 18–64 mm, standard material Steel (also stainless steel, brass or aluminium). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀5 mm bar stock; its longest variant is MIKA-PVT-50 at 64 mm. Besides turning, the family requires taper turning. All of it is completed in a single setup, without the part leaving the machine.
The most slender variant is MIKA-PVT-12: 22 mm long at ⌀1.2 mm, a length-to-diameter ratio of 18.3. This ratio is the very reason sliding-head lathes exist. The guide bushing supports the bar immediately beside the cutting point, so there is no deflection; the same part chatters and drifts in diameter on a conventional lathe.
Variants are machined to h5, h6 tolerance classes; the smallest is MIKA-PVT-10 (⌀1 mm) and the largest MIKA-PVT-50 (⌀5 mm). The family includes tapered, 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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