This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X400, 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 SI32X400
The AirTAC SI32 Standard Air Cylinder SI32X400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 400mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X400, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke400 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X400
- 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 SI32X400
The AirTAC SI32X400 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 400mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32X400, a direct sharing the exact interface, bore, stroke, output force, and mounting fixtures.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this non-magnet SKU cannot accept a sensor. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line.
Airtac SI32 Standard Air Cylinder SI32X400 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X400 |
| Bore size | Ø32 mm |
| Stroke | 400 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 SAI32X400 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 SAI32X400 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 SI32X400
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 SI32X400 Is Used
Small Parts Ejection
Provides 402N of push force at 0.5MPa to eject small machined components from a fixture, utilizing the 400mm stroke to clear the work area completely.
Package Diverting
Actuates a routing gate on a 24V conveyor line, with the 20kg vertical lift capacity handling light gate mechanisms reliably over a 400mm travel distance.
Light Duty Material Handling
Moves lightweight bins or trays between processing stations, taking advantage of the compact 32mm ISO 15552 profile barrel to fit in tight machine envelopes.
Replacing the Airtac SI32 Standard Air Cylinder SI32X400 with the SAI32X400
To replace the SI32X400, order the SAI32X400. Confirm the ISO 15552 mounting interface, 32mm bore, 400mm stroke, G1/8 port (PT/G/NPT thread), and your mounting accessory. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position feedback is required. For sizing, the 32mm bore yields 402N push at 0.5MPa; if more force is needed, step up to the 40mm bore (628N). Remember a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Finally, at 400mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X400
- ✓ 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 SI32X400 FAQ
Yes, the SI32X400 is discontinued. The direct replacement is the AirTAC SAI32X400. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 400mm stroke, 402N force, G1/8 port, and mounting interface.
At 0.5MPa it provides 402N push and 345N pull force. At 0.7MPa push is 563N, and at 0.9MPa it is 724N. The theoretical maximum force is 82kgf at 1.0MPa. The operating speed range is 30-800mm/s, and it features a G1/8 air port with a 12mm rod.
Request a Quote for the SAI32X400
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X400 replacement — usually within 7-8 hours.