This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX275, 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 SI32BX275
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX275 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 275mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX275, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke275 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX275
- 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 SI32BX275
The AirTAC SI32BX275 is a discontinued double-acting ISO 15552 profile cylinder featuring a 32 mm bore, 275 mm stroke, and a SUS304 stainless steel rod. Delivering 402 N push force at 0.5 MPa, it is replaced by the SAI32BX275. This drop-in upgrade shares the exact ISO 15552 mounting interface, G1/8 port, and M10x1.25 rod thread, fitting existing fixtures perfectly.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For this bore, safe working load is roughly 241 N (about 60% of the 0.5 MPa push force) and vertical lift is about 20 kg with a 2:1 margin. Note this non-magnet SKU cannot take a sensor, and plain cylinders drift without air; use SAIL or BSAI lock variants for holding.
Airtac SI32 Standard Air Cylinder SI32BX275 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX275 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX275 |
| Bore size | Ø32 mm |
| Stroke | 275 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 SAI32BX275 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 SAI32BX275 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 SI32BX275
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×275 | 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 SI32BX275 Is Used
Stainless Rod Actuation
Leverages the SUS304 rod for light-duty cycling in washdown or corrosive-adjacent manufacturing cells requiring 402 N push force.
Lab Positioning
Moves sample trays or test rigs over a 275 mm travel with a safe working load near 241 N, relying on adjustable cushions for smooth stops.
Light Clamping
Secures small components during secondary machining operations, providing a 20 kg vertical lift capacity with a 2:1 safety margin.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX275 with the SAI32BX275
To replace the SI32BX275, order the SAI32BX275 and confirm the ISO 15552 interface, 32 mm bore, 275 mm stroke, G1/8 port, and SUS304 rod. This non-magnet version cannot accept a CS1-B/DS1-B switch. If sizing up, a 40 mm bore yields 628 N push at 0.5 MPa; sizing down is not available. For this 275 mm stroke, use a guide to prevent rod bending and side loads. The air cushion only decelerates; for load holding, explore the SAIL or BSAI lock variants, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX275
- ✓ 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 SI32BX275 FAQ
Yes, the SI32BX275 is discontinued. The exact drop-in replacement is the SAI32BX275. It shares the same ISO 15552 mounting interface, 32 mm bore, 275 mm stroke, force, and G1/8 port, fitting directly into existing fixtures.
It has a G1/8 port. Force ratings are 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX275
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX275 replacement — usually within 7-8 hours.