Brake Piston Tip
Internally threaded push tip with conical seat for caliper piston.
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 |
|---|---|---|---|---|---|
| OTOB-PTP-05 | 8 | 12 | taper · ⌀5 | js9 | M5 internally threaded piston end |
| OTOB-PTP-06 | 10 | 14 | taper · ⌀6 | js9 | M6 internally threaded piston end |
| OTOB-PTP-07 | 12 | 16 | taper · ⌀6 | js9 | M6 internally threaded piston end |
| OTOB-PTP-08 | 12 | 18 | taper · ⌀6 | js9 | stepped M6 internally threaded piston end |
| OTOB-PTP-09 | 14 | 17 | taper · ⌀8 | js9 | M8 internally threaded piston end |
| OTOB-PTP-10 | 14 | 21 | taper · ⌀8 | js9 | stepped M8 internally threaded piston end |
| OTOB-PTP-11 | 16 | 19 | taper · ⌀10 | js9 | M10 internally threaded piston end |
| OTOB-PTP-12 | 16 | 24 | taper · ⌀10 | js9 | stepped M10 internally threaded piston end |
| OTOB-PTP-13 | 18 | 21 | taper · ⌀10 | js9 | M10 internally threaded piston end |
| OTOB-PTP-14 | 20 | 22 | taper · ⌀12 | js9 | M12 internally threaded piston end |
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
Brake Piston Tip is a Automotive Precision Parts family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀8–20 mm, lengths 12–24 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 ⌀20 mm bar stock; its longest variant is OTOB-PTP-12 at 24 mm. Besides turning, the family requires taper turning. Bores in this family run ⌀5–12 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 OTOB-PTP-05: 12 mm long at ⌀8 mm, L/D 1.5. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to js9 tolerance; the smallest is OTOB-PTP-05 (⌀8 mm) and the largest OTOB-PTP-14 (⌀20 mm). The family includes tapered, 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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