This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32BX120S, 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 SI32BX120S
The AirTAC SI32 Standard Air Cylinder SI32BX120S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 120mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32BX120S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke120 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX120S
- 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 SI32BX120S
The AirTAC SI32BX120S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 120mm stroke, and a SUS304 stainless steel rod. Delivering 402N push at 0.5MPa, it is replaced by the SAI32BX120S. This direct upgrade shares the exact ISO 15552 mounting interface, port (G1/8), and force, fitting existing fixtures seamlessly.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure. The -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current switches. A plain cylinder drifts on air loss; use SAIL or BSAI lock variants for holding.
Airtac SI32 Standard Air Cylinder SI32BX120S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX120S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX120S |
| Bore size | Ø32 mm |
| Stroke | 120 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 SAI32BX120S 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 SAI32BX120S 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 SI32BX120S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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 SI32BX120S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight finished parts out of machining centers.
Corrosive Sorting
The SUS304 stainless rod resists moisture in washdown areas while actuating package diverters.
Clamp Actuation
Provides 345N pull force to hold small aluminum fixtures securely during light assembly tasks.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX120S with the SAI32BX120S
To replace the SI32BX120S, order the SAI32BX120S. Confirm the ISO 15552 interface, 32mm bore, 120mm stroke, G1/8 port, and SUS304 rod. The -S magnet enables CS1-B/DS1-B sensors. If downsizing, a 32mm bore yields 402N push at 0.5MPa; upsizing to 40mm gives 628N. For load holding, the cushion only decelerates; use a pilot check valve or SAIL/BSAI lock variant. The 120mm stroke is under 300mm, so side-load risks are low, but maintain guide alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX120S
- ✓ 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 SI32BX120S FAQ
Yes, the SI32BX120S is discontinued. The direct replacement is the SAI32BX120S. It shares the same ISO 15552 mounting interface, 32mm bore, 120mm stroke, G1/8 port, and output force, fitting existing fixtures perfectly.
The G1/8 port bore delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa. It operates at 30-800mm/s with a 27mm cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX120S replacement — usually within 7-8 hours.