This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX650S, 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 SI32AX650S
The AirTAC SI32 Standard Air Cylinder SI32AX650S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 650mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX650S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke650 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX650S
- 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 SI32AX650S
The AirTAC SI32AX650S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 650mm stroke, SUS420J2 stainless rod, and a built-in magnet. Delivering 402N push at 0.5MPa through a G1/8 port, it is replaced by the SAI32AX650S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force, and port, fitting existing fixtures perfectly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF, and BSAI lock/valve variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32AX650S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX650S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX650S |
| Bore size | Ø32 mm |
| Stroke | 650 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 SAI32AX650S 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 SAI32AX650S 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 SI32AX650S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×650 | 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 SI32AX650S Is Used
Long-Reach Part Transfer
Uses the 650mm stroke to push lightweight components between machining stations, relying on external guides to prevent rod bending on the 32mm bore.
Stainless Rod Washdown
The SUS420J2 rod option suits mildly corrosive environments where the standard carbon steel rod would degrade, handling 402N push at 0.5MPa.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX650S with the SAI32AX650S
To replace the SI32AX650S, order the SAI32AX650S. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), the G1/8 port thread (PT/G/NPT), the -S magnet, and the SUS420J2 stainless rod requirement. At 650mm, the 12mm rod is susceptible to bending under side-loads—use external guides to prevent premature seal wear. For higher force, the neighbouring 40mm bore provides 628N push at 0.5MPa. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX650S
- ✓ 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 SI32AX650S FAQ
Yes, the SI32AX650S is discontinued. The direct replacement is the SAI32AX650S. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 650mm stroke, 402N force, G1/8 port, and mounting interface.
This double-acting 32mm bore cylinder has a 12mm rod, M10x1.25 thread, 27mm cushion, and operates at 30-800 mm/s. Force ratings are 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX650S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX650S replacement — usually within 7-8 hours.