This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X540, 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 SI32X540
The AirTAC SI32 Standard Air Cylinder SI32X540 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 540mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X540, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke540 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X540
- 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 SI32X540
The AirTAC SI32X540 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 540 mm stroke, delivering 402 N push force at 0.5 MPa through a G1/8 port. The direct replacement is the SAI32X540, matching the exact bore, stroke, output force, port size, and mounting interface.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet, so it cannot accept position sensors.
Airtac SI32 Standard Air Cylinder SI32X540 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X540 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X540 |
| Bore size | Ø32 mm |
| Stroke | 540 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 SAI32X540 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 SAI32X540 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 SI32X540
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×540 | 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 SI32X540 Is Used
Package Diverting
Pushes lightweight cartons off a main conveyor line using a 540 mm reach, relying on the 402 N push force to overcome friction without damaging packaging.
Pallet Stopper
Acts as a pneumatic stop for incoming pallets on a roller track, decelerating loads smoothly using the adjustable 27 mm air cushions at both ends.
Light Part Ejection
Ejects small molded components from a fixture, where the 32 mm bore provides adequate force and the long stroke clears the machine bed safely.
Replacing the Airtac SI32 Standard Air Cylinder SI32X540 with the SAI32X540
To replace the SI32X540, order the SAI32X540, confirming the ISO 15552 mounting interface, 32 mm bore, 540 mm stroke, G1/8 port (PT/G/NPT thread options), and mounting accessory. Because this SKU lacks the -S magnet suffix, it cannot support CS1-B or DS1-B legacy sensors; choose an -S variant if position detection is required. For sizing alternatives, a 40 mm bore yields 628 N push at 0.5 MPa, while dropping to a smaller bore reduces capacity. A plain cylinder drifts on air loss, so for load holding consider an external pilot check valve or the SAIL/BSAI lock variants. Finally, at 540 mm, the extended stroke necessitates external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X540
- ✓ 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 SI32X540 FAQ
Yes, the SI32X540 is discontinued. The direct replacement is the SAI32X540. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 540 mm stroke, G1/8 port, and mounting interface, so it drops directly into existing fixtures.
This 32 mm bore double-acting cylinder uses a G1/8 air port and provides 402 N push / 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical maximum of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32X540
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X540 replacement — usually within 7-8 hours.