This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X40SH, 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 SI32X40SH
The AirTAC SI32 Standard Air Cylinder SI32X40SH 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 SAI32X40SH, 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 → SAI32X40SH
- 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 SI32X40SH
The AirTAC SI32X40SH 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 SAI32X40SH. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -H suffix denotes a Viton FKM seal, extending the operating temperature range from -20°C up to 150°C. With the -S magnet, position sensing uses legacy CS1-B/DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32X40SH Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X40SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X40SH |
| 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 SAI32X40SH 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 SAI32X40SH 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 SI32X40SH
| 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 SI32X40SH Is Used
Compact Part Ejection
Uses the 402N push force at 0.5MPa to eject small moulded parts from a fixture, fitting neatly into tight machinery envelopes.
High-Temperature Testing
Actuates mechanisms inside a thermal chamber, leveraging the -H Viton FKM seals to withstand ambient temperatures up to 150°C.
Replacing the Airtac SI32 Standard Air Cylinder SI32X40SH with the SAI32X40SH
To replace the SI32X40SH, order the SAI32X40SH. Verify the ISO 15552 mounting interface, 32mm bore, 40mm stroke, G1/8 port (PT/G/NPT thread options), and the -S magnet for CS1-B/DS1-B sensors. The SAI family also introduces SAIL (air-released lock), SAIF (built-in 4M valve) and BSAI (clamp-lock) variants the SI lacked. If you need more force, the neighbouring 40mm bore provides 628N push at 0.5MPa; if less is required, consider smaller non-ISO alternatives. Note that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X40SH
- ✓ 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 SI32X40SH FAQ
Yes, the SI32X40SH is discontinued. The direct replacement is the SAI32X40SH. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 32mm bore, 40mm stroke, output force, G1/8 port and mounting accessories.
This double-acting 32mm bore cylinder features a G1/8 air port. It delivers a push force of 402N and a pull force of 345N at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum force of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X40SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X40SH replacement — usually within 7-8 hours.