Encoder Shaft
Tight-tolerance stepped precision shaft for encoder disc and bearing seating.
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 |
|---|---|---|---|---|---|
| MILB-ENC-01 | 4 | 42 | 3 steps | h6 | — |
| MILB-ENC-02 | 5 | 46 | 3 steps | h6 · ⌀5: 0/−0.008 | — |
| MILB-ENC-03 | 6 | 55 | 3 steps | h6 · ⌀6: 0/−0.008 | — |
| MILB-ENC-04 | 6 | 55 | 3 steps | h6 · ⌀6: 0/−0.008 | asymmetric end |
| MILB-ENC-05 | 8 | 66 | 3 steps | h6 | — |
| MILB-ENC-06 | 8 | 60 | ⌀3.3 · 3 steps | h6 | M4 internal thread |
| MILB-ENC-07 | 10 | 75 | 3 steps | h6 · ⌀10: 0/−0.009 | — |
| MILB-ENC-08 | 10 | 73 | 3 steps | h6 | — |
| MILB-ENC-09 | 12 | 82 | 3 steps | h6 | — |
| MILB-ENC-10 | 14 | 95 | 3 steps | h6 | — |
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
Encoder Shaft is a Shafts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀4–14 mm, lengths 42–95 mm, standard material Stainless Steel (also 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 ⌀14 mm bar stock; its longest variant is MILB-ENC-10 at 95 mm. Besides turning, the family requires axial drilling (⌀3.3 mm). All of it is completed in a single setup, without the part leaving the machine.
The most slender variant is MILB-ENC-01: 42 mm long at ⌀4 mm, a length-to-diameter ratio of 10.5. 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 h6 tolerance; the smallest is MILB-ENC-01 (⌀4 mm) and the largest MILB-ENC-10 (⌀14 mm). The family includes 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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