This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X90S, 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 SI32 Standard Air Cylinder SI32X90S
The AirTAC SI32 Standard Air Cylinder SI32X90S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 90mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X90S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke90 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X90S
- 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 SI32 Standard Air Cylinder SI32X90S
The AirTAC SI32X90S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 90 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X90S, a direct upgrade retaining the exact same interface, output, and mounting dimensions.
The SAI upgrade introduces a refined piston seal featuring two Y-shaped one-way elements for lower start-up pressure and extended life. Because your SKU includes the -S magnet, it supports legacy CS1-B/DS1-B sensors, while the SAI family accommodates current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32X90S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X90S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X90S |
| Bore size | Ø32 mm |
| Stroke | 90 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 SAI32X90S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32X90S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32X90S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×90 | 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 SI32 Standard Air Cylinder SI32X90S Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of a fixture using its 402 N push force at 0.5 MPa.
Package Diverting
The 90 mm stroke provides precise movement to deflect small cartons on a packaging line without overshooting.
Clamp Actuation
Suitable for securing thin materials or electronics assemblies where a 20 kg vertical holding margin is sufficient.
Replacing the Airtac SI32 Standard Air Cylinder SI32X90S with the SAI32X90S
To replace the SI32X90S, order the SAI32X90S and verify your ISO 15552 mounting hardware, G1/8 port thread (PT/G/NPT), and the M10x1.25 rod-end connection. If you need to scale up, the adjacent 40 mm bore provides 628 N push at 0.5 MPa; scaling down is not available below 32 mm. The 90 mm stroke is well within standard limits, so no side-load concerns arise. Remember that a standard cylinder cannot hold a load without live air—the cushion only decelerates. For secure holding, consider an external pilot check valve or explore the SAIL lock or BSAI clamp-lock variants. The SAIF variant with a built-in 4M valve is also available for this 32 mm bore.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X90S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI32 Standard Air Cylinder SI32X90S FAQ
Yes, the SI32X90S is discontinued. The direct replacement is the AirTAC SAI32X90S. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 90 mm stroke, force, G1/8 port, and mounting fixtures perfectly.
The 32 mm bore provides 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a maximum theoretical force of 82 kgf at 1.0 MPa. Operating speed ranges from 30-800 mm/s.
Request a Quote for the SAI32X90S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X90S replacement — usually within 7-8 hours.