This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X40CA, 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 SI32X40CA
The AirTAC SI32 Standard Air Cylinder SI32X40CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 40mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X40CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X40CA
- 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 SI32X40CA
The AirTAC SI32X40CA is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 40mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32X40CA. This direct upgrade shares the exact same CA clevis mounting interface, M10x1.25 rod thread, and dimensions.
The SAI successor features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note this non-magnet SKU cannot accept a sensor; if load holding is required, use the SAIL lock variant or an external pilot check valve.
Airtac SI32 Standard Air Cylinder SI32X40CA Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X40CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X40CA |
| Bore size | Ø32 mm |
| Stroke | 40 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 SAI32X40CA 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 SAI32X40CA 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 SI32X40CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 SI32X40CA Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight molded parts out of an injection molding fixture.
Clamp Actuation
Fits into tight machinery spaces via the CA clevis mount, providing secure secondary clamping of aluminum workpieces.
Gate Diversion
Pivots smoothly on the CA clevis to redirect small component flow on a conveyor belt without requiring sensing.
Replacing the Airtac SI32 Standard Air Cylinder SI32X40CA with the SAI32X40CA
To replace the SI32X40CA, order the SAI32X40CA. Verify the ISO 15552 interface, 32mm bore, 40mm stroke, G1/8 port, and CA clevis mount. Because this SKU lacks an -S magnet, it cannot accept position sensors like the legacy CS1-B/DS1-B switches. If sensing is needed, specify an SAI32X40CAS. The 32mm bore provides 402N push at 0.5MPa; sizing down is not standard, but sizing up to 40mm yields 628N. A plain cylinder drifts on air loss—the cushion only decelerates—so for held loads consider the SAIL lock or BSAI clamp-lock variants. Stroke is short, so rod bending is minimal, but always guide external loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X40CA
- ✓ 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 SI32X40CA FAQ
Yes, the SI32X40CA is discontinued. The direct replacement is the SAI32X40CA. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 40mm stroke, G1/8 port, 402N force, and CA mounting interface.
The 32mm bore features a G1/8 port. It generates 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a maximum theoretical force of 82kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X40CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X40CA replacement — usually within 7-8 hours.