Stepped Bearing Shaft
Bearing-and-locating shaft built from successive cylindrical steps of differing diameters.
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-STP-01 | 6 | 44 | 3 steps | h7 · ⌀6: 0/−0.012 | — |
| MILB-STP-02 | 8 | 55 | 3 steps | h7 | — |
| MILB-STP-03 | 10 | 66 | 3 steps | h7 | — |
| MILB-STP-04 | 12 | 60 | 3 steps | h7 | three-step |
| MILB-STP-05 | 12 | 75 | 3 steps | h7 | — |
| MILB-STP-06 | 12 | 84 | 3 steps | h7 | — |
| MILB-STP-07 | 14 | 90 | 3 steps | h7 | — |
| MILB-STP-08 | 16 | 80 | 3 steps | h7 | progressive step |
| MILB-STP-09 | 16 | 95 | 3 steps | h7 · ⌀16: 0/−0.018 | — |
| MILB-STP-10 | 18 | 110 | 3 steps | h7 · ⌀18: 0/−0.018 | — |
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
Stepped Bearing Shaft is a Shafts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀6–18 mm, lengths 44–110 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 ⌀18 mm bar stock; its longest variant is MILB-STP-10 at 110 mm. The family is produced by turning alone. All of it is completed in a single setup, without the part leaving the machine.
The most slender variant is MILB-STP-01: 44 mm long at ⌀6 mm, a length-to-diameter ratio of 7.3. A part this slender needs tailstock support on a conventional lathe. On a sliding-head lathe the guide bushing holds the bar right next to the cutting edge, so the part is machined without a centre.
Variants are machined to h7 tolerance; the smallest is MILB-STP-01 (⌀6 mm) and the largest MILB-STP-10 (⌀18 mm). The family includes 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?
Other Families in This Category
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