This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX350S, 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 SI32BX350S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 350mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke350 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX350S
- 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 SI32BX350S
The AirTAC SI32BX350S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 350mm stroke. It delivers 402N push and 345N pull at 0.5MPa, uses a G1/8 port, and features a SUS304 stainless steel rod for corrosion resistance. The direct drop-in replacement is the SAI32BX350S, which shares the exact same ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For your sizing, the safe working load is roughly 241N (about 60% of the 402N push force), translating to a 20kg vertical lift with a 2:1 margin. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This -S model has a piston magnet for legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32BX350S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX350S |
| Bore size | Ø32 mm |
| Stroke | 350 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 SAI32BX350S 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 SAI32BX350S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32BX350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×350 | 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 SI32BX350S Is Used
Stainless Rod Actuation
Ideal for light-duty machinery requiring the corrosion resistance of the SUS304 piston rod, handling push forces up to 402N at 0.5MPa.
Package Diverting
Provides reliable 350mm travel for diverting small packages on a line, utilizing the built-in magnet for position sensing.
Vertical Lift Gates
Suitable for raising lightweight access gates or barriers up to 20kg, safely managed with a 2:1 vertical lift margin.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX350S with the SAI32BX350S
To replace the SI32BX350S, order the SAI32BX350S. Confirm the ISO 15552 mounting interface, 32mm bore, 350mm stroke, G1/8 port, and your specific mounting accessory (LB, FA, TC, etc.). The -S magnet and -B SUS304 rod must be specified on the new order. Sizing both ways: this 32mm bore gives 402N push at 0.5MPa; dropping to a 25mm bore lowers force, while a 40mm bore yields 628N. Because this is a 350mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX350S
- ✓ 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 SI32BX350S FAQ
Yes, the SI32BX350S is discontinued. The exact drop-in replacement is the SAI32BX350S. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 350mm stroke, 402N force, G1/8 port, and mounting fixtures.
The 32mm bore features a G1/8 port. Force output is 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 SAI32BX350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX350S replacement — usually within 7-8 hours.