This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X450STC, 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 SI32X450STC
The AirTAC SI32 Standard Air Cylinder SI32X450STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 450mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X450STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke450 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X450STC
- 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 SI32X450STC
The AirTAC SI32X450STC is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 450mm stroke. Delivering 402N push force at 0.5MPa, it is replaced by the SAI32X450STC. This direct upgrade shares the exact ISO 15552 mounting interface, G1/8 port, and TC trunnion mount. The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure, and adds SAIL, SAIF, and BSAI variants the SI lacked.
The -S magnet works with CS1-B/DS1-B switches. For a 450mm stroke, use external guides to prevent rod bending. Plain cylinders drift without air; use a pilot check valve or SAIL lock for load holding.
Airtac SI32 Standard Air Cylinder SI32X450STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X450STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X450STC |
| Bore size | Ø32 mm |
| Stroke | 450 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 SAI32X450STC 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 SAI32X450STC 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 SI32X450STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 SI32X450STC Is Used
Material Diverting
Drives lightweight routing gates on conveyor lines using the TC trunnion mount to pivot packages smoothly.
Bin Ejection
Pushes small components out of storage bins with a 402N push force at 0.5MPa over a 450mm reach.
Fixture Clearing
Sweeps machined parts from fixtures, requiring external guides to manage side loads at the extended 450mm stroke.
Replacing the Airtac SI32 Standard Air Cylinder SI32X450STC with the SAI32X450STC
To replace the SI32X450STC, order the SAI32X450STC. Confirm the ISO 15552 TC trunnion mount, 32mm bore, 450mm stroke, G1/8 port, and -S magnet for CS1-B/DS1-B sensors. If sizing up, a 40mm bore yields 628N push at 0.5MPa; if downsizing, a 20mm bore is lower force. At 450mm, add external guides to prevent rod bending. The air cushion only decelerates; it does not hold. For load holding on air loss, use an external rod lock, pilot check valve, or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X450STC
- ✓ 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 SI32X450STC FAQ
Yes, the AirTAC SI32X450STC is discontinued. The direct replacement is the SAI32X450STC. It shares the same ISO 15552 mounting interface, 32mm bore, 450mm stroke, G1/8 port, and TC mount, fitting existing fixtures perfectly.
The 32mm bore features a G1/8 port. Force ratings are 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X450STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X450STC replacement — usually within 7-8 hours.