This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X55, 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 SI32X55
The AirTAC SI32 Standard Air Cylinder SI32X55 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 55mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X55, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke55 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X55
- 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 SI32X55
The AirTAC SI32X55 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 55 mm stroke, delivering 402 N push force at 0.5 MPa via a G1/8 port. AirTAC replaced it with the SAI32X55 direct replacement, retaining the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting accessories.
The SAI32X55 features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because this specific SI32X55 SKU lacks a magnet (-S), it cannot accept a CS1-B/DS1-B sensor.
Airtac SI32 Standard Air Cylinder SI32X55 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X55 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X55 |
| Bore size | Ø32 mm |
| Stroke | 55 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 SAI32X55 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 SAI32X55 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 SI32X55
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×55 | 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 SI32X55 Is Used
Clamp Actuation
Provides reliable clamping force for small assembly jigs where a 20 kg vertical lift margin is sufficient.
Gate Diverting
Drives short-stroke diverter gates in compact packaging lines using the 55 mm stroke and G1/8 port.
Replacing the Airtac SI32 Standard Air Cylinder SI32X55 with the SAI32X55
To replace the discontinued SI32X55, order the SAI32X55. Verify your ISO 15552 mounting interface (LB, FA, FB, CA, CB, TC), the 55 mm stroke, and the G1/8 port. Since this SKU has no magnet, it cannot support position sensing; if you need switches, select an SAI32X55S and use current AirTAC sensors. The 32 mm bore yields 402 N push at 0.5 MPa; if you need less force, step down, or step up to a 40 mm bore for 628 N. Note that a plain cylinder does not hold load on air loss—the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X55
- ✓ 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 SI32X55 FAQ
Yes, the SI32X55 is discontinued. The direct replacement is the SAI32X55, which shares the same ISO 15552 mounting interface, 32 mm bore, 55 mm stroke, output force, G1/8 port and mounting accessories.
The 32 mm bore uses a G1/8 port and provides 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical maximum of 82 kgf at 1.0 MPa. It features a 12 mm rod, M10x1.25 thread, and operates at 30-800 mm/s.
Request a Quote for the SAI32X55
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X55 replacement — usually within 7-8 hours.