This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X270, 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 SI32X270
The AirTAC SI32 Standard Air Cylinder SI32X270 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 270mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X270, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke270 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X270
- 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 SI32X270
The AirTAC SI32X270 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 270 mm stroke. It delivers 402 N push at 0.5 MPa via a G1/8 port. The direct replacement is the SAI32X270, retaining the exact interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This no-magnet SKU cannot take a sensor, unlike CS1-B/DS1-B equipped versions.
Airtac SI32 Standard Air Cylinder SI32X270 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X270 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X270 |
| Bore size | Ø32 mm |
| Stroke | 270 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 SAI32X270 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 SAI32X270 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 SI32X270
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×270 | 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 SI32X270 Is Used
Small Part Ejection
Uses the 402 N push force to reliably knock small machined components out of fixture clamps on an assembly line.
Package Diverting
Actuates a routing gate at 30-800 mm/s to sort lightweight boxes on a material handling conveyor system.
Clamp Actuation
Drives a 270 mm stroke to position and secure low-weight workpieces within automated welding or testing cells.
Replacing the Airtac SI32 Standard Air Cylinder SI32X270 with the SAI32X270
To replace the SI32X270, order the SAI32X270 ensuring the ISO 15552 mounting interface, 32 mm bore, 270 mm stroke, G1/8 port, and M10x1.25 rod thread match your fixture. Size both ways: a 40 mm bore yields 628 N push at 0.5 MPa, while dropping to a 25 mm bore reduces force. At 270 mm stroke, guide external rods to prevent side-load bending. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X270
- ✓ 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 SI32X270 FAQ
Yes, the SI32X270 is discontinued. The direct replacement is the SAI32X270, which is dimensionally interchangeable per ISO 15552 with the same bore, stroke, force, G1/8 port and mounting.
It has a G1/8 port. Force ratings are 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32X270
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X270 replacement — usually within 7-8 hours.