Compression / Push-in Fitting
Push-in compression hydraulic fitting with stepped body and conical ferrule seat.
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 9 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| RAKB-GCR-11 | 9.2 | 19 | M5 · SW8 · taper · ⌀2.8 | 6g | micro compression fitting for ⌀3 tube |
| RAKB-GCR-07 | 11.5 | 21 | M6 · SW10 · taper · ⌀3.5 | 6g | mini compression fitting for ⌀4 tube |
| RAKB-GCR-04 | 13.9 | 26 | M8 · SW12 · taper · ⌀5 | 6g | taper-ferrule seat for ⌀6 tube |
| RAKB-GCR-08 | 15 | 27 | M8x1 · SW13 · taper · ⌀6 | 6g | fine thread; ⌀6 tube fit |
| RAKB-GCR-05 | 16.2 | 31 | M10x1 · SW14 · taper · ⌀6.5 | 6g | taper-ferrule seat for ⌀8 tube |
| RAKB-GCR-09 | 16.2 | 32 | M10x1.25 · SW14 · taper · ⌀6.5 | 6g | fine thread; ⌀8 tube fit |
| RAKB-GCR-12 | 16.2 | 33 | M10x1 · SW14 · taper · ⌀6 | 6g | long tube seat; ⌀6 tube fit |
| RAKB-GCR-06 | 19.6 | 36 | M12x1.5 · SW17 · taper · ⌀8 | 6g | taper-ferrule seat for ⌀10 tube |
| RAKB-GCR-10 | 19.6 | 39 | M12x1.5 · SW17 · taper · ⌀9 | 6g | high flow; ⌀12 tube fit |
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
Compression / Push-in Fitting is a Fittings family precision-turned on a Goodway SW-20, covering 9 variants — diameters ⌀9.2–19.6 mm, lengths 19–39 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 RAKB-GCR-10 at 39 mm. Besides turning, the family requires thread turning (7 sizes from M5 to M12x1.5), hex flat milling (AF 8–17), taper turning and axial drilling (⌀2.8–9 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 RAKB-GCR-11: 19 mm long at ⌀9.2 mm, L/D 2.1. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to 6g tolerance; the smallest is RAKB-GCR-11 (⌀9.2 mm) and the largest RAKB-GCR-10 (⌀19.6 mm). The family includes threaded, hex-drive, 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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