This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X850S, 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 SI32X850S
The AirTAC SI32 Standard Air Cylinder SI32X850S 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 SAI32X850S, 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 → SAI32X850S
- 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 SI32X850S
The AirTAC SI32X850S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 850 mm stroke. Delivering 402 N push force at 0.5 MPa via a G1/8 port, it is replaced by the SAI32X850S. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force and port size for existing fixtures.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked. Your -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32X850S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X850S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X850S |
| 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 SAI32X850S 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 SAI32X850S 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 SI32X850S
| 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 SI32X850S Is Used
Long-Reach Diverting
Pushes light packages across a conveyor belt over an 850 mm span, utilizing the 402 N force to deflect cardboard cartons without bending the rod when properly guided.
Pallet Gate Actuation
Cycles a safety pallet gate or light barrier arm in logistics cells, where the compact 32 mm bore fits tight spaces and the long stroke provides full clearance for forklifts.
Film Web Tracking
Adjusts a guide roller on a packaging film web, using the built-in magnet for end-position feedback while the 850 mm stroke accommodates wide material rolls.
Replacing the Airtac SI32 Standard Air Cylinder SI32X850S with the SAI32X850S
To replace the SI32X850S, order the SAI32X850S. Confirm the ISO 15552 mounting interface, the 32 mm bore, 850 mm stroke, G1/8 port (PT/G/NPT thread options) and your mounting accessory. The -S magnet equips it for current AirTAC switches. Because this is an 850 mm stroke, prevent rod bending by guiding the load externally to avoid side loads. A plain cylinder drifts without air; for load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant. Sizing both ways: a 40 mm bore gives 628 N push at 0.5 MPa, while dropping to 25 mm bore reduces force, so 32 mm is correct for 402 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X850S
- ✓ 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 SI32X850S FAQ
Yes, the SI32X850S is discontinued. The direct replacement is the SAI32X850S. It shares the same ISO 15552 mounting interface, 32 mm bore, 850 mm stroke, output force, G1/8 port and mounting accessories, fitting directly into existing fixtures.
The bore has a G1/8 port. At 0.5 MPa it provides 402 N push and 345 N pull force. At 0.7 MPa push is 563 N, and at 0.9 MPa it is 724 N. The theoretical maximum force is 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X850S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X850S replacement — usually within 7-8 hours.