This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX250SN, 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 SI32AX250SN
The AirTAC SI32 Standard Air Cylinder SI32AX250SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 250mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX250SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX250SN
- 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 SI32AX250SN
The AirTAC SI32AX250SN is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 250mm stroke. It features an extruded aluminum barrel, a SUS420J2 stainless piston rod (-A), an NBR seal (-N), and a built-in magnet (-S) for CS1-B/DS1-B switches. Delivering 402N push force at 0.5MPa via a G1/8 port, its direct replacement is the SAI32AX250SN.
The SAI32AX250SN maintains identical ISO 15552 mounting dimensions, bore, stroke, and force. It upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL lock, SAIF valve, and BSAI clamp-lock variants absent in the legacy SI line.
Airtac SI32 Standard Air Cylinder SI32AX250SN Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX250SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX250SN |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAI32AX250SN 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 SAI32AX250SN 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 SI32AX250SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SI32AX250SN Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to eject light machined components from a fixture, relying on the 250mm stroke to clear the work area completely.
Package Diverting
Actuates a routing gate on a packaging line, where the 20kg vertical lift capacity and NBR seals perform reliably within the -20 to +70C range.
Light Material Handling
Transfers small bins between conveyors; the SUS420J2 stainless rod provides corrosion resistance in humid or wash-down environments.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX250SN with the SAI32AX250SN
To replace the SI32AX250SN, order the SAI32AX250SN. Confirm the ISO 15552 interface, 32mm bore, 250mm stroke, G1/8 port, and mounting accessory. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B), the -A rod is SUS420J2 stainless steel, and the -N seal is NBR. If you need more force, the adjacent 40mm bore provides 628N push at 0.5MPa; if less is required, consider a smaller profile. Because this is a 250mm stroke, ensure adequate guidance to prevent side-load and rod-bending issues. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX250SN
- ✓ 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 SI32AX250SN FAQ
Yes, the SI32AX250SN is discontinued. The direct replacement is the SAI32AX250SN. It is dimensionally interchangeable per ISO 15552, keeping the same 32mm bore, 250mm stroke, 402N force, G1/8 port, and mounting interface.
The G1/8 port feeds a 32mm bore generating 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa. Operating pressure is 0.15-1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX250SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX250SN replacement — usually within 7-8 hours.