This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX325, 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 SI32BX325
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX325 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 325mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX325, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke325 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX325
- 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 SI32BX325
The AirTAC SI32BX325 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 325mm stroke. Featuring a SUS304 stainless piston rod, it delivers 402N push force at 0.5MPa via a G1/8 port. The direct drop-in replacement is the SAI32BX325, matching the interface, bore, stroke, force, port and mounting exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. A computed buyer insight: safe working load is ~241N (60% of the 402N push force), yielding a ~20kg vertical lift with a 2:1 margin. Note this SKU lacks a magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI32 Standard Air Cylinder SI32BX325 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX325 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX325 |
| Bore size | Ø32 mm |
| Stroke | 325 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 SAI32BX325 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 SAI32BX325 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 SI32BX325
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×325 | 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 SI32BX325 Is Used
Lab Automation
Drives sterile sampling racks with the SUS304 rod preventing corrosion in humid life-science chambers.
Small Part Ejection
Pushes lightweight plastic mouldings out of press tools using a safe 241N working load over 325mm.
Diverting Gates
Actuates low-friction routing flaps on packaging lines where a 20kg vertical lift capacity is ample.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX325 with the SAI32BX325
To replace the SI32BX325, order the SAI32BX325 keeping the identical ISO 15552 mounting interface, 32mm bore, 325mm stroke, G1/8 port, and SUS304 rod. Size both ways: a 40mm bore gives 628N push at 0.5MPa, while dropping to a 25mm bore reduces force. Because this is a 325mm stroke, use external guides to prevent rod bending and side-load wear. This non-magnet SKU cannot accept a sensor. For load holding, note the air cushion only decelerates; use an external pilot check valve or the SAIL/BSAI lock variant, as standard cylinders drift without live air.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX325
- ✓ 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 SI32BX325 FAQ
Yes, the SI32BX325 is discontinued. The exact drop-in replacement is the SAI32BX325. It shares the identical ISO 15552 mounting interface, 32mm bore, 325mm stroke, output force, G1/8 port, and accessories, fitting existing fixtures perfectly.
This double-acting cylinder has a G1/8 port. It provides 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical max of 82kgf at 1.0MPa. Operating pressure is 0.15-1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX325
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