This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X900STC, 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 SI32X900STC
The AirTAC SI32 Standard Air Cylinder SI32X900STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 900mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X900STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke900 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X900STC
- 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 SI32X900STC
The AirTAC SI32X900STC is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 900 mm stroke. Delivering 402 N push force at 0.5 MPa via a G1/8 port, it is directly replaced by the SAI32X900STC. This direct upgrade shares the exact ISO 15552 mounting interface, TC trunnion, and M10x1.25 rod thread.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet supports CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32X900STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X900STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X900STC |
| Bore size | Ø32 mm |
| Stroke | 900 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 SAI32X900STC 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 SAI32X900STC 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 SI32X900STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×900 | 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 SI32X900STC Is Used
Long-Stroke Diversion
900 mm reach for routing light packages on conveyor lines without adding complex multi-stage actuators.
Vertical Material Lift
Raises ~20 kg carriers through a 900 mm vertical axis, guided externally to prevent rod side-load bending.
Assembly Push-off
Ejects machined parts from fixture beds using 402 N push force at 0.5 MPa over extended machine beds.
Replacing the Airtac SI32 Standard Air Cylinder SI32X900STC with the SAI32X900STC
To replace the SI32X900STC, order the SAI32X900STC keeping the 32 mm bore, 900 mm stroke, G1/8 port, TC trunnion mount, and -S magnet. The SAI uses current AirTAC switches instead of legacy CS1-B/DS1-B. For sizing both ways: a 40 mm bore offers 628 N push at 0.5 MPa, while dropping pressure to 0.4 MPa yields ~321 N. Because this is a 900 mm long stroke, use an external guide to prevent rod bending and side-load wear. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify an SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X900STC
- ✓ 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 SI32X900STC FAQ
Yes, the SI32X900STC is discontinued. The direct replacement is the SAI32X900STC. It shares the same ISO 15552 mounting interface, 32 mm bore, 900 mm stroke, G1/8 port, and TC trunnion, fitting existing fixtures perfectly.
The G1/8 port bore delivers 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, with a 27 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X900STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X900STC replacement — usually within 7-8 hours.