This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X100SFTC, 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 SI32 Standard Air Cylinder SI32X100SFTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 100mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X100SFTC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X100SFTC is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 100mm stroke. It delivers 402N push force at 0.5MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X100SFTC, a direct upgrade retaining the exact interface, bore, stroke, force, and FTC trunnion mount.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. It also introduces lock and valve variants like SAIL and SAIF that the original SI lacked. The included -S magnet supports CS1-B/DS1-B switches, while rod options include carbon steel, SUS420J2, or SUS304.
| Model | Airtac SI32 Standard Air Cylinder SI32X100SFTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X100SFTC |
| Bore size | Ø32 mm |
| Stroke | 100 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 SAI32X100SFTC 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 SAI32X100SFTC 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. |
| ×100 | 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).
Ideal for pushing lightweight machined components out of an automated fixture using 402N of thrust at 0.5MPa.
Provides reliable 100mm stroke actuation to sort or redirect small cartons on a packaging line at speeds up to 800mm/s.
To replace the SI32X100SFTC, order the SAI32X100SFTC. Confirm the ISO 15552 FTC trunnion mounting interface, 32mm bore, 100mm stroke, G1/8 port (PT/G/NPT thread options), and the -S magnet for CS1-B/DS1-B sensors. When sizing, this bore yields 402N push at 0.5MPa; a neighbouring 40mm bore provides 628N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for held loads. The SAIF variant integrates a 4M valve if self-actuation is needed.
Replacement checklist
Yes, the AirTAC SI32X100SFTC is discontinued. The direct replacement is the SAI32X100SFTC. It shares the same ISO 15552 mounting interface, 32mm bore, 100mm stroke, output force, G1/8 port, and FTC trunnion mount, fitting existing fixtures perfectly.
The 32mm bore features a G1/8 air port and M10x1.25 rod thread. It generates 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X100SFTC replacement — usually within 7-8 hours.