This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX155S, 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 SI32AX155S
The AirTAC SI32 Standard Air Cylinder SI32AX155S 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 SAI32AX155S, 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 → SAI32AX155S
- 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 SI32AX155S
The AirTAC SI32AX155S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 155mm stroke. It delivers 402N push at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX155S, matching the exact bore, stroke, force, port and mounting interface.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The -A suffix denotes a SUS420J2 stainless rod, and -S means a magnet for CS1-B/DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32AX155S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX155S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX155S |
| 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 SAI32AX155S 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 SAI32AX155S 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 SI32AX155S
| 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 SI32AX155S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight molded parts out of a machining fixture.
Package Diverting
Sorts small cartons on a conveyor belt with a 155mm stroke, leveraging the 30-800mm/s speed range.
Lab Test Positioning
Moves sample trays precisely with the SUS420J2 stainless rod, resisting moisture in environmental chambers.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX155S with the SAI32AX155S
To replace the SI32AX155S, order the SAI32AX155S. Verify the ISO 15552 mounting interface, 32mm bore, 155mm stroke, G1/8 port, SUS420J2 rod, and magnet. If you need more force than the 402N push at 0.5MPa, step up to the 40mm bore (628N). For load holding, note that a plain cylinder drifts on air loss; use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX155S
- ✓ 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 SI32AX155S FAQ
Yes, the SI32AX155S is discontinued. The direct replacement is the SAI32AX155S. It matches the ISO 15552 mounting interface, 32mm bore, 155mm stroke, force, G1/8 port and accessories, dropping directly into existing fixtures.
This double-acting cylinder has a G1/8 port. It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX155S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX155S replacement — usually within 7-8 hours.