This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX400, 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 SI32AX400
The AirTAC SI32 Standard Air Cylinder SI32AX400 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 SAI32AX400, 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 → SAI32AX400
- 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 SI32AX400
The AirTAC SI32AX400 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 400mm stroke, SUS420J2 stainless rod, and G1/8 port, delivering 402N push at 0.5 MPa. AirTAC replaced it with the SAI32AX400 direct replacement, matching the interface, force, and mounting. This SKU lacks a magnet, so it cannot accept a position switch.
The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32AX400 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX400 |
| 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 SAI32AX400 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 SAI32AX400 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 SI32AX400
| 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 SI32AX400 Is Used
Stainless Rod Actuation
Ideal for light-duty machinery requiring the SUS420J2 corrosion-resistant rod for pushing tasks over a 400mm travel distance.
Package Diverting
Provides 402N push at 0.5 MPa to deflect small cartons on a line, utilizing the adjustable 27mm air cushions at stroke ends.
Compact Assembly Ejection
Ejects lightweight finished parts from fixtures using a 20kg safe vertical lift capacity within tight ISO 15552 footprints.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX400 with the SAI32AX400
To replace this SI32AX400, order the SAI32AX400. Confirm the ISO 15552 mounting interface, 32mm bore, 400mm stroke, G1/8 port, and SUS420J2 rod. Since this is a no-magnet SKU, it cannot take a CS1-B/DS1-B sensor; if sensing is needed, specify an SAI with an S suffix. For the 400mm stroke, use external guides to prevent rod bending under side loads. If stepping up to a 40mm bore, expect 628N push at 0.5 MPa. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX400
- ✓ 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 SI32AX400 FAQ
Yes, the SI32AX400 is discontinued. The direct replacement is the AirTAC SAI32AX400. It matches the ISO 15552 mounting interface, 32mm bore, 400mm stroke, G1/8 port, and output force, fitting existing fixtures perfectly.
The 32mm bore provides 402N push and 345N pull at 0.5 MPa, 563N push at 0.7 MPa, 724N push at 0.9 MPa, and a maximum theoretical force of 82kgf at 1.0 MPa. Operating speed is 30-800mm/s. It has a G1/8 port and M10x1.25 rod thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX400
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX400 replacement — usually within 7-8 hours.