This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX145S, 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 SI32BX145S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX145S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 145mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX145S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke145 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX145S
- 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 SI32BX145S
The AirTAC SI32BX145S is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 145mm stroke, and a SUS304 stainless steel rod. Delivering 402N push force at 0.5MPa via a G1/8 port, it is directly replaced by the SAI32BX145S. This drop-in upgrade shares the exact ISO 15552 mounting interface, stroke, and output force, fitting existing fixtures seamlessly.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S magnet on this legacy unit supports CS1-B/DS1-B sensors, while the SAI family uses current AirTAC switches. For practical sizing, the safe working load is roughly 241N (60% of the 0.5MPa push force), translating to a 20kg vertical lift with a 2:1 safety margin. The SAI line also adds SAIL, SAIF, and BSAI lock variants absent in the SI series.
Airtac SI32 Standard Air Cylinder SI32BX145S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX145S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX145S |
| Bore size | Ø32 mm |
| Stroke | 145 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 SAI32BX145S 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 SAI32BX145S 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 SI32BX145S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×145 | 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 SI32BX145S Is Used
Stainless Rod Clamping
Ideal for small-scale clamping tasks in washdown or corrosive environments where the SUS304 rod prevents degradation while providing 402N of push force.
Compact Component Sorting
Drives 145mm linear movements to divert or gate lightweight parts on automated assembly lines, utilizing the built-in magnet for precise end-position feedback.
Lab Automation Handling
Moves sample trays or testing fixtures with a 20kg vertical lift capacity, relying on the adjustable 27mm air cushions for smooth deceleration.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX145S with the SAI32BX145S
To replace the SI32BX145S, order the SAI32BX145S. Confirm the ISO 15552 mounting interface, 32mm bore, 145mm stroke, G1/8 port (PT/G/NPT thread), and mounting accessory match your fixture. The -B designation indicates a SUS304 stainless rod for corrosion resistance, and the -S denotes a piston magnet for position sensing. If you need more force, the neighbouring 40mm bore provides 628N push at 0.5MPa; if less is required, consider smaller alternatives. Note that a plain cylinder drifts on air loss because the air cushion only decelerates near stroke end. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 145mm stroke, side-load and rod-bending risks are minimal, but standard guide rules apply.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX145S
- ✓ 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 SI32BX145S FAQ
Yes, the AirTAC SI32BX145S is discontinued. The exact drop-in replacement is the SAI32BX145S. It features the same ISO 15552 mounting interface, 32mm bore, 145mm stroke, output force, and G1/8 port, allowing it to fit existing fixtures perfectly.
The 32mm bore features a G1/8 air port and an M10x1.25 rod thread. 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 SAI32BX145S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX145S replacement — usually within 7-8 hours.