This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX155, 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 SI32AX155
The AirTAC SI32 Standard Air Cylinder SI32AX155 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 155mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX155, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke155 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX155
- 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 SI32AX155
The AirTAC SI32AX155 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 155mm stroke. It delivers 402N push force at 0.5MPa and features a G1/8 port. The direct replacement is the SAI32AX155, matching the exact ISO 15552 mounting interface, force, and stroke.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. This SI32AX155 unit uses an SUS420J2 stainless steel rod (A suffix) and lacks a magnet, meaning it cannot accept a sensor switch.
Airtac SI32 Standard Air Cylinder SI32AX155 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX155 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX155 |
| Bore size | Ø32 mm |
| Stroke | 155 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 SAI32AX155 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 SAI32AX155 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 SI32AX155
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×155 | 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 SI32AX155 Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture.
Corrosive Sorting
The SUS420J2 stainless rod option makes this 32mm bore cylinder suitable for damp washdown sorting stations.
Package Diverting
Executes 155mm strokes to divert small packages on a conveyor without overwhelming delicate items.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX155 with the SAI32AX155
To replace the SI32AX155, order the SAI32AX155. Confirm the ISO 15552 mounting interface, 32mm bore, 155mm stroke, G1/8 port, and SUS420J2 rod. Because this SKU lacks a magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. At 0.5MPa it yields 402N push and 345N pull. If undersized, the neighbouring 40mm bore provides 628N push. Note: a plain cylinder drifts on air loss; for load holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX155
- ✓ 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 SI32AX155 FAQ
Yes, the SI32AX155 is discontinued. The direct replacement is the SAI32AX155. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 155mm stroke, G1/8 port, and SUS420J2 rod.
It features a G1/8 port. The force ratings are 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX155
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX155 replacement — usually within 7-8 hours.