This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX70S, 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 SI32AX70S
The AirTAC SI32 Standard Air Cylinder SI32AX70S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 70mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX70S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke70 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX70S
- 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 SI32AX70S
The AirTAC SI32AX70S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 70mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX70S, matching the interface, stroke, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SI32AX70S has a SUS420J2 stainless rod (-A) and a piston magnet (-S) for CS1-B/DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32AX70S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX70S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX70S |
| Bore size | Ø32 mm |
| Stroke | 70 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 SAI32AX70S 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 SAI32AX70S 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 SI32AX70S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 SI32AX70S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight molded plastic parts out of a machining fixture.
Package Diverting
The 70mm stroke actuates a routing gate on a packaging line, handling the 20kg vertical lift capacity safely.
Corrosive Material Sorting
Leverages the SUS420J2 stainless steel rod option to divert small metal components in humid or mildly corrosive environments.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX70S with the SAI32AX70S
To replace the SI32AX70S, order the SAI32AX70S. Confirm the ISO 15552 mounting interface, 70mm stroke, G1/8 port, and mounting accessory. This unit includes the -S magnet for CS1-B/DS1-B sensors (the SAI uses current AirTAC switches) and the -A SUS420J2 stainless rod. If sizing up, the 40mm bore yields 628N push at 0.5MPa; if sizing down, no smaller standard bore exists. 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. The SAIF variant adds a built-in valve for bores 32-100mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX70S
- ✓ 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 SI32AX70S FAQ
Yes, the AirTAC SI32AX70S is discontinued. The direct replacement is the SAI32AX70S. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 70mm stroke, G1/8 port, and mounting fixtures perfectly.
This double-acting cylinder has a G1/8 port. It provides 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum force of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX70S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX70S replacement — usually within 7-8 hours.