This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X140S, 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 SI32X140S
The AirTAC SI32 Standard Air Cylinder SI32X140S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 140mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X140S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke140 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X140S
- 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 SI32X140S
The AirTAC SI32X140S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 140mm stroke. It delivers 402N push at 0.5MPa via a G1/8 port. The direct replacement is the SAI32X140S, matching the interface, force, and mounting.
The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure. The -S magnet works with CS1-B/DS1-B sensors, and Viton H seals raise heat to 150C.
Airtac SI32 Standard Air Cylinder SI32X140S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X140S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X140S |
| Bore size | Ø32 mm |
| Stroke | 140 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 SAI32X140S 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 SAI32X140S 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 SI32X140S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×140 | 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 SI32X140S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture at the end of a cycle.
Package Diverting
The 140mm stroke actuates a diverting arm on a conveyor line, handling the ~20kg vertical lift margin safely without overwhelming the mechanism.
Clamp Actuation
Provides low-force clamping for delicate assemblies, where the 32mm bore and adjustable 27mm air cushions ensure soft end-of-stroke contact.
Replacing the Airtac SI32 Standard Air Cylinder SI32X140S with the SAI32X140S
To replace the SI32X140S, order the SAI32X140S. Verify the ISO 15552 mounting interface, 140mm stroke, G1/8 port (PT/G/NPT thread), and the -S magnet for CS1-B/DS1-B switches. Sizing both ways: the 32mm bore gives 402N push at 0.5MPa, while the neighbouring 40mm bore offers 628N. For a 140mm stroke, side-load is minimal, but always guide the rod to prevent bending. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X140S
- ✓ 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 SI32X140S FAQ
Yes, the SI32X140S is discontinued. The direct replacement is the SAI32X140S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 140mm stroke, force, G1/8 port, and mounting fixtures.
This 32mm bore double-acting cylinder uses a G1/8 air port. It generates 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X140S replacement — usually within 7-8 hours.