This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X450FB, 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 SI32X450FB
The AirTAC SI32 Standard Air Cylinder SI32X450FB 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 SAI32X450FB, 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 → SAI32X450FB
- 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 SI32X450FB
The AirTAC SI32X450FB is a discontinued double-acting ISO 15552 profile cylinder featuring an FB flange mount. Delivering 402 N push force at 0.5 MPa, it is replaced by the SAI32X450FB. This direct upgrade matches the 32 mm bore, 450 mm stroke, G1/8 port, and ISO 15552 mounting interface.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI32 Standard Air Cylinder SI32X450FB Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X450FB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X450FB |
| 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 SAI32X450FB 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 SAI32X450FB 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 SI32X450FB
| 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 SI32X450FB Is Used
Package Diverting
Uses the 402 N push force at 0.5 MPa to push light cartons between conveyor lanes over a 450 mm travel distance.
Small Part Ejection
Ejects lightweight molded parts from a press area, utilizing the FB flange mount for secure vertical positioning.
Fixture Actuation
Opens and closes secondary clamping fixtures on an automated assembly line, moving safely within the 241 N working load limit.
Replacing the Airtac SI32 Standard Air Cylinder SI32X450FB with the SAI32X450FB
To replace the SI32X450FB, order the SAI32X450FB. Verify the FB flange mount, G1/8 port, and M10x1.25 rod thread match your fixture. Since this is a no-magnet SKU, it cannot support position sensing; order an SAI variant with the S suffix if switches are needed. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The 450 mm stroke requires external guides to prevent rod bending. If sizing up, the 40 mm bore offers 628 N push at 0.5 MPa; sizing down, the 32 mm bore provides 345 N pull.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X450FB
- ✓ 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 SI32X450FB FAQ
Yes, the SI32X450FB is discontinued. The direct replacement is the SAI32X450FB. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 450 mm stroke, FB flange mount, and G1/8 port.
The G1/8 port bore delivers 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 theoretical max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X450FB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X450FB replacement — usually within 7-8 hours.