This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X250SN, 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 SI32X250SN
The AirTAC SI32 Standard Air Cylinder SI32X250SN 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 SAI32X250SN, 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 → SAI32X250SN
- 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 SI32X250SN
The AirTAC SI32X250SN is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 250mm stroke. Delivering 402N push force at 0.5MPa, it is replaced by the SAI32X250SN. This direct successor shares the exact G1/8 port, M10x1.25 thread, and mounting interface, fitting existing fixtures perfectly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. With the -S magnet, this model supports legacy CS1-B/DS1-B switches, while the -N NBR seal handles -20 to +70C.
Airtac SI32 Standard Air Cylinder SI32X250SN Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X250SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X250SN |
| 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 SAI32X250SN 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 SAI32X250SN 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 SI32X250SN
| 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 SI32X250SN Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture.
Package Diverting
Actuates a routing gate along a packaging line, with the 250mm stroke providing full travel.
Replacing the Airtac SI32 Standard Air Cylinder SI32X250SN with the SAI32X250SN
To replace the SI32X250SN, order the SAI32X250SN direct, confirming the ISO 15552 interface, 32mm bore, 250mm stroke, G1/8 port (PT/G/NPT), and mounting accessory. The -S magnet and -N NBR seal must be specified. For sizing alternatives, a 40mm bore yields 628N push at 0.5MPa, while dropping to a 25mm stroke reduces rod bending risks. Note that 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. At 250mm stroke, guide external loads to prevent side-load wear on the 12mm rod.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X250SN
- ✓ 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 SI32X250SN FAQ
Yes, the SI32X250SN is discontinued. The direct replacement is the SAI32X250SN. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 250mm stroke, G1/8 port, and mounting interface.
This double-acting cylinder features 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 max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X250SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X250SN replacement — usually within 7-8 hours.