This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX850S, 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 SI32AX850S
The AirTAC SI32 Standard Air Cylinder SI32AX850S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 850mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX850S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke850 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX850S
- 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 SI32AX850S
The AirTAC SI32AX850S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 850 mm stroke. It delivers 402 N of push force at 0.5 MPa through a G1/8 port. The direct replacement is the SAI32AX850S, sharing the same interface, force, and mounting. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For position sensing, this -S model includes a piston magnet for legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC switches.
This variant uses a SUS420J2 stainless steel rod for corrosion resistance. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. Note that at 850 mm, side-load risks increase, requiring external guides to prevent rod bending.
Airtac SI32 Standard Air Cylinder SI32AX850S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX850S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX850S |
| Bore size | Ø32 mm |
| Stroke | 850 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 SAI32AX850S 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 SAI32AX850S 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 SI32AX850S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×850 | 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 SI32AX850S Is Used
Long-Stroke Diversion
Pushes light packages across a conveyor belt at 850 mm stroke, utilizing the 32 mm bore's 402 N push force for smooth actuation.
Storage Retrieval
Extracts totes from shelving in automated storage systems, where the SUS420J2 stainless rod resists environmental moisture.
Light Assembly Transfer
Moves small jigs between machining stations, relying on the G1/8 port and ISO 15552 profile for easy fixture integration.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX850S with the SAI32AX850S
To replace the SI32AX850S, order the SAI32AX850S. Confirm the ISO 15552 mounting interface, 32 mm bore, 850 mm stroke, G1/8 port, and mounting accessories. Because this is an 850 mm stroke, use external guides to prevent rod bending and side-load wear. If you need to upsize, the 40 mm bore offers 628 N push at 0.5 MPa; if downsizing is possible, verify your load requirements. A plain cylinder does not hold load on air loss—the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. The -A rod is SUS420J2 stainless, and the -S magnet supports CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX850S
- ✓ 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 SI32AX850S FAQ
Yes, the SI32AX850S is discontinued. The direct replacement is the SAI32AX850S. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 850 mm stroke, 402 N force, G1/8 port, and mounting interface.
This 32 mm bore double-acting cylinder features a G1/8 air port, a 12 mm rod, and an M10x1.25 thread. The thrust 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 maximum theoretical force of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX850S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX850S replacement — usually within 7-8 hours.