This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID32X500S, 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.

The AirTAC Airtac SID Series Double-Rod Cylinder SID32X500S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 500mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID32X500S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID32X500S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force remain equal at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. This model is discontinued; the direct replacement is the SAID32X500S. It shares the same 32 mm bore, 500 mm stroke, G1/8 port, and ISO 15552 mounting interface. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life.
With a 12 mm rod and M10x1.25 thread, the -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
| Model | Airtac SID Series Double-Rod Cylinder SID32X500S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID32X500S |
| Bore size | Ø32 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID32X500S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAID32X500S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×500 | 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).
Simultaneously drives two opposing grippers to pick and place parts from both ends of the 500 mm stroke with equal 345 N force.
Uses the twin rods exiting both ends to push opposing measuring stops, ensuring parallel alignment without rotational drift.
The rear rod carries a sensor cam, allowing external position tracking while the front rod performs the primary work.
To replace the discontinued SID32X500S, install the direct replacement SAID32X500S, reusing the existing ISO 15552 mounting (Basic, FA, LB, TC) without bracket changes. When sizing, verify equal both-ways force: this 32 mm bore provides 345 N @0.5 MPa. If higher force is needed, step up to a 40 mm bore (528 N @0.5 MPa). A double-rod design is ideal when driving two tools or needing an anti-rotation back rod for a sensor cam. The -S magnet enables position sensing. For this 500 mm stroke, use external guides to prevent rod bending and side loads. Never rely on cushions for load holding; add a pilot-operated check valve.
Replacement checklist
Yes, the SID32X500S is discontinued. The direct replacement is the SAID32X500S, which matches the 32 mm bore, 500 mm stroke, G1/8 port, and ISO 15552 mounting interface.
Force is equal both ways at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. The air port is G1/8, the rod is 12 mm with an M10x1.25 thread, and speed ranges 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID32X500S replacement — usually within 7-8 hours.