Cylinder Head Bushing
Stepped bored bushing guiding the piston at the cylinder head.
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 |
|---|---|---|---|---|---|
| HIDB-CHB-06 | 10 | 12 | ⌀6 · 2 steps | H7 · ⌀6: +0.012/0 | H7 bore |
| HIDB-CHB-08 | 12 | 14 | ⌀8 · 2 steps | H7 · ⌀8: +0.015/0 | H7 bore |
| HIDB-CHB-10 | 14 | 17 | ⌀10 · 2 steps | H7 · ⌀10: +0.015/0 | H7 bore |
| HIDB-CHB-11 | 15 | 17 | ⌀11 · 2 steps | H7 · ⌀11: +0.018/0 | H7 bore |
| HIDB-CHB-12 | 16 | 20 | ⌀12 · 2 steps | H7 · ⌀12: +0.018/0 | H7 bore |
| HIDB-CHB-13 | 17 | 20 | ⌀13 · 2 steps | H7 · ⌀13: +0.018/0 | H7 bore |
| HIDB-CHB-14 | 18 | 21 | ⌀14 · 2 steps | H7 · ⌀14: +0.018/0 | H7 bore |
| HIDB-CHB-15 | 19 | 23 | ⌀15 · 2 steps | H7 · ⌀15: +0.018/0 | H7 bore |
| HIDB-CHB-16 | 20 | 25 | ⌀16 · 2 steps | H7 · ⌀16: +0.018/0 | H7 bore |
| HIDB-CHB-17 | 20 | 28 | ⌀17 · 2 steps | H7 · ⌀17: +0.018/0 | H7 bore |
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
Cylinder Head Bushing is a Hydraulic & Pneumatic Pistons family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀10–20 mm, lengths 12–28 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 ⌀20 mm bar stock; its longest variant is HIDB-CHB-17 at 28 mm. The family is produced by turning alone. Bores in this family run ⌀6–17 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 HIDB-CHB-17: 28 mm long at ⌀20 mm, L/D 1.4. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to H7 tolerance; the smallest is HIDB-CHB-06 (⌀10 mm) and the largest HIDB-CHB-17 (⌀20 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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