This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID32X300S, 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 SID32X300S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 300mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID32X300S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID32X300S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force is equal both ways (345 N @0.5 MPa). Because both faces use the rod-side area, you never get a larger single-rod push value. The 32 mm bore uses a 12 mm rod, M10x1.25 thread, and a G1/8 port. This legacy unit is discontinued; the direct replacement is the SAID32X300S, which reuses the same ISO 15552 mounting interface and adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure.
The rear rod can carry a sensor cam or drive a second tool, offering anti-rotation benefits. With the -S suffix, this model includes a piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate; for load holding without live air, use an external rod lock or the SAIL/BSAI variants.
| Model | Airtac SID Series Double-Rod Cylinder SID32X300S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID32X300S |
| Bore size | Ø32 mm |
| Stroke | 300 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 SAID32X300S 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 SAID32X300S 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. |
| ×300 | 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).
Uses the extending rear rod to drive a secondary gripper on a conveyor belt, synchronizing two pick-and-place actions with equal both-ways force.
The twin-rod geometry prevents piston rotation during clamping in machining fixtures, maintaining precise alignment without external guides.
Drives a sizing gate from both ends simultaneously, ensuring the workpiece stays centered during forming operations.
To replace the discontinued SID32X300S, install the SAID32X300S direct: it matches the 32 mm bore, 300 mm stroke, G1/8 port, and FA/LB/TC mounting. Size both ways by checking equal force across neighbour bores, ensuring the 345 N @0.5 MPa output fits your system. A double rod is right when you need equal both-ways force or anti-rotation. The -S magnet works with legacy CS1-B/DS1-B sensors. Because the stroke is 300 mm, add external guides to prevent rod bending under side-load.
Replacement checklist
Yes, the SID32X300S is discontinued. The direct replacement is the SAID32X300S, sharing the same ISO 15552 interface, 300 mm stroke, and G1/8 port. The SAI family also adds SAIF and BSAI lock variants the SI line lacked.
Force is equal both ways: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. Speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID32X300S replacement — usually within 7-8 hours.