Valve Guide
Bored bush with press-fit outer diameter guiding the valve stem.
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 8 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| OTOA-VLK-05 | 5 | 24 | ⌀3 | s6 | shank bore ⌀3 |
| OTOA-VLK-06 | 6 | 30 | ⌀3.5 | s6 | shank bore ⌀3.5 |
| OTOA-VLK-08 | 8 | 36 | ⌀5 | s6 | shank bore ⌀5 |
| OTOA-VLK-08K | 8 | 36 | knurl · ⌀5 · 2 steps | s6 | knurled press fit |
| OTOA-VLK-10 | 10 | 42 | ⌀6 | s6 | shank bore ⌀6 |
| OTOA-VLK-12 | 12 | 48 | ⌀7 | s6 | shank bore ⌀7 |
| OTOA-VLK-14 | 14 | 54 | ⌀8 | s6 | shank bore ⌀8 |
| OTOA-VLK-16 | 16 | 60 | ⌀9 | s6 | shank bore ⌀9 |
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
Valve Guide is a Automotive Precision Parts family precision-turned on a Goodway SW-20, covering 8 variants — diameters ⌀5–16 mm, lengths 24–60 mm, standard material Brass (also steel, stainless steel 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 ⌀16 mm bar stock; its longest variant is OTOA-VLK-16 at 60 mm. Besides turning, the family requires knurling and axial drilling (⌀3–9 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 OTOA-VLK-06: 30 mm long at ⌀6 mm, L/D 5.0. This ratio is achievable on a conventional lathe as well; the sliding-head advantage in series work is that the part never leaves the machine, so the size does not drift from variant to variant.
Variants are machined to s6 tolerance; the smallest is OTOA-VLK-05 (⌀5 mm) and the largest OTOA-VLK-16 (⌀16 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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