This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX40S, 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 SI32AX40S
The AirTAC SI32 Standard Air Cylinder SI32AX40S 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 SAI32AX40S, 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 → SAI32AX40S
- 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 SI32AX40S
The AirTAC SI32AX40S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 40 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. The direct replacement is the SAI32AX40S, matching the exact bore, stroke, output force, and mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SI32AX40S has an SUS420J2 stainless steel rod (-A) and a magnet (-S) for CS1-B/DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32AX40S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX40S |
| 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 SAI32AX40S 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 SAI32AX40S 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 SI32AX40S
| 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 SI32AX40S Is Used
Small Part Clamping
Ideal for securing lightweight machined components during secondary milling or drilling operations using the 402 N push force.
Electronics Assembly
Moves delicate electronic actuators and fixtures with precise 40 mm strokes and low friction guidance.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX40S with the SAI32AX40S
To replace this SI32AX40S, order the SAI32AX40S. Verify the ISO 15552 mounting interface, 32 mm bore, 40 mm stroke, G1/8 port, and the -S magnet for legacy CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). Keep the -A SUS420J2 stainless rod specification if corrosion resistance is needed. If you need more force, the neighboring 40 mm bore yields 628 N push at 0.5 MPa; if less is acceptable, check smaller profiles. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, consider an external pilot check valve, or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX40S
- ✓ 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 SI32AX40S FAQ
Yes, the AirTAC SI32AX40S is discontinued. The direct replacement is the SAI32AX40S. It shares the same ISO 15552 mounting interface, 32 mm bore, 40 mm stroke, output force, and G1/8 port, fitting directly into existing fixtures.
This 32 mm bore cylinder uses a G1/8 air port. The force output is 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 maximum of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX40S replacement — usually within 7-8 hours.