This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX70, 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 SI32AX70
The AirTAC SI32 Standard Air Cylinder SI32AX70 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 SAI32AX70, 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 → SAI32AX70
- 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 SI32AX70
The AirTAC SI32AX70 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 70 mm stroke. It delivers a push force of 402 N at 0.5 MPa. The direct replacement is the SAI32AX70, which maintains the exact same interface, force, G1/8 port, and mounting dimensions. The SAI upgrade introduces an improved piston seal featuring two Y-shaped one-way elements for lower start-up pressure and longer life. This SI32AX70 variant uses a SUS420J2 stainless steel rod (the -A option) for corrosion resistance, but because it lacks the -S suffix, it cannot accept a magnetic sensor.
Note that a standard cylinder relies on adjustable air cushions to decelerate at stroke ends but will not hold a load if air pressure drops. For secure load holding, consider an external pilot check valve or the SAIL/BSAI lock variants. If high-temperature environments up to 150 C are involved, specify the Viton H seal option.
Airtac SI32 Standard Air Cylinder SI32AX70 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX70 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX70 |
| 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 SAI32AX70 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 SAI32AX70 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 SI32AX70
| 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 SI32AX70 Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of a fixture with a reliable 402 N push force at 0.5 MPa.
Material Sorting Gates
Actuates diverter gates in compact sorting conveyors where the 70 mm stroke and SUS420J2 stainless rod resist corrosion.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX70 with the SAI32AX70
To replace the discontinued SI32AX70, order the SAI32AX70. Verify your ISO 15552 mounting fixtures, the G1/8 air port, and the M10x1.25 rod-end thread. Because this specific SKU lacks a magnet (-S), it cannot support position sensing; if your application requires switches, select an SAI32AX70S and use current AirTAC sensors. If you need to adjust force, the neighbouring 40 mm bore provides 628 N push at 0.5 MPa, while dropping pressure to 0.4 MPa yields about 322 N. For any load-holding requirements, remember the air cushion only decelerates; add an external rod lock or pilot check valve, or step up to the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX70
- ✓ 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 SI32AX70 FAQ
Yes, the AirTAC SI32AX70 is discontinued. The direct replacement is the SAI32AX70. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 70 mm stroke, force, G1/8 port, and mounting interface.
This 32 mm bore double-acting cylinder features a G1/8 air port. It provides a push force of 402 N and a pull force of 345 N at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical maximum of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32AX70
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX70 replacement — usually within 7-8 hours.