This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID63X400S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SID Series Double-Rod Cylinder SID63X400S
The AirTAC Airtac SID Series Double-Rod Cylinder SID63X400S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 400mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID63X400S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID63X400S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SID Series Double-Rod Cylinder SID63X400S
The AirTAC SID63X400S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are equal both ways (1402 N @0.5 MPa). Because both faces use the identical rod-side area, you never get a larger single-rod push value. This bore 63 mm unit has a 20 mm piston rod, M16x1.5 rod-end thread, 30 mm adjustable air cushions at each end, a G3/8 air port, and operates at 30-800 mm/s. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B reed switches.
This SID model is discontinued and replaced by the SAID63X400S. The SAID direct retains the exact ISO 15552 mounting interface, 400 mm stroke, and G3/8 port, while adding an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Remember that air cushions only decelerate near stroke end; a plain cylinder does not hold loads on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID63X400S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID63X400S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID63X400S |
| Bore size | Ø63 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID63X400S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAID63X400S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID63X400S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SID Series Double-Rod Cylinder SID63X400S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads from a single 63 mm bore piston, utilizing the equal both-ways force to push and pull tooling with identical 1402 N @0.5 MPa authority.
Anti-Rotation Transfer Gate
Uses the twin-rod architecture to prevent mechanical twist during 400 mm travel, ensuring a conveyor divert gate stays perfectly aligned without external linear bearings.
Cam-Driven Sensing Array
Leverages the rear protruding rod to physically trigger external legacy CS1-B/DS1-B sensors, providing a positive mechanical position signal at both stroke ends.
Replacing the Airtac SID Series Double-Rod Cylinder SID63X400S with the SAID63X400S
To replace the discontinued SID63X400S, specify the SAID63X400S, which offers a direct swap via the identical ISO 15552 interface, 400 mm stroke, and G3/8 port. When sizing both ways, verify the 1402 N @0.5 MPa equal-both-ways force meets your requirement; if more push/pull is needed, step up to the 80 mm bore (2268 N), or drop to the 50 mm bore (825 N) for lighter loads. A double rod is right when you need anti-rotation stability, the ability to drive two tools from one piston, or a back rod to carry a sensor cam. Reuse existing FA, LB, or TC mounts. The -S magnet supports legacy CS1-B/DS1-B switches. Because the 400 mm stroke is long, add external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID63X400S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID63X400S FAQ
Yes, the SID63X400S is discontinued. The direct replacement is the SAID63X400S, which maintains the same ISO 15552 mounting interface, 400 mm stroke, G3/8 port, and equal both-ways force, while adding an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. It operates at 30-800 mm/s with a 20 mm rod and G3/8 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAID63X400S
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