This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX5S, 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 SI32BX5S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX5S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 5mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX5S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke5 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX5S
- 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 SI32BX5S
The AirTAC SI32BX5S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 5mm stroke, and SUS304 stainless steel rod. Delivering 402N push force at 0.5MPa via a G1/8 port, its direct drop-in replacement is the SAI32BX5S. The SAI upgrade retains identical ISO 15552 mounting dimensions but introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life.
For sizing, a safe working load is roughly 241N (60% of the 402N push force), equating to a 20kg vertical lift with a 2:1 margin. This -S variant includes a piston magnet for CS1-B/DS1-B sensors. Note that a standard cylinder does not hold load without live air; for locking needs, the SAI family adds SAIL and BSAI clamp-lock variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32BX5S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX5S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX5S |
| Bore size | Ø32 mm |
| Stroke | 5 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 SAI32BX5S 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 SAI32BX5S 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 SI32BX5S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×5 | 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 SI32BX5S Is Used
Short-Stroke Clamping
Ideal for tight fixture clamping in machining centers where a 5mm stroke provides rapid part holding without excessive travel.
Ejector Mechanisms
Suited for small part ejection in automated assembly lines, utilizing the 402N push force to reliably clear components.
Lab Positioning
The SUS304 rod offers corrosion resistance for laboratory or washdown environments requiring precise 5mm movements.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX5S with the SAI32BX5S
To replace the SI32BX5S, order the SAI32BX5S ensuring the ISO 15552 interface, 32mm bore, 5mm stroke, G1/8 port, and SUS304 rod are matched. If more force is needed, the neighbouring 40mm bore yields 628N push at 0.5MPa; if less space exists, confirm dimensions. The -S magnet enables CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. For load holding on air loss, add an external pilot check valve or rod lock, as cushions only decelerate. The SAIF variant integrates a 4M valve for compact setups.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX5S
- ✓ 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 SI32BX5S FAQ
Yes, the SI32BX5S is discontinued. The exact drop-in replacement is the SAI32BX5S, offering the same ISO 15552 mounting interface, 32mm bore, 5mm stroke, force, and G1/8 port.
It features a G1/8 port and provides 402N push / 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical max of 82kgf at 1.0MPa.
Request a Quote for the SAI32BX5S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX5S replacement — usually within 7-8 hours.