This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X275S, 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 SI32X275S
The AirTAC SI32 Standard Air Cylinder SI32X275S 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 direct replacement is the SAI32X275S, 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 → SAI32X275S
- 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 SI32X275S
The AirTAC SI32X275S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 275mm stroke. Delivering 402N push force at 0.5MPa, it features a G1/8 port and adjustable air cushions. The direct replacement is the SAI32X275S, matching the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI lock variants absent in the SI line. The -S suffix means a piston magnet for CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32X275S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X275S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X275S |
| 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 SAI32X275S 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 SAI32X275S 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 SI32X275S
| 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 SI32X275S Is Used
Compact Part Ejection
Uses the 402N push force at 0.5MPa to eject small machined components from a fixture, relying on the 275mm stroke to clear the work area completely.
Package Diverting
Actuates a diverting arm on a packaging line, where the 20kg vertical lift capacity and 275mm extension move light cartons between parallel belts.
Small Assembly Pressing
Provides steady force to press lightweight bearings or pins, with the adjustable 27mm cushion decelerating the rod at the end of the stroke.
Replacing the Airtac SI32 Standard Air Cylinder SI32X275S with the SAI32X275S
To replace the SI32X275S, order the SAI32X275S. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC), the 32mm bore, 275mm stroke, G1/8 port (PT/G/NPT), and the -S magnet. The SAI is dimensionally interchangeable per ISO 15552 and drops into existing fixtures. If you need more force, the neighboring 40mm bore yields 628N push at 0.5MPa; if less space is available, there is no smaller ISO 15552 bore. For 275mm strokes, guide external rods to prevent side-load bending. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X275S
- ✓ 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 SI32X275S FAQ
Yes, the SI32X275S is discontinued. The direct replacement is the SAI32X275S. It shares the same ISO 15552 mounting interface, 32mm bore, 275mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
The 32mm bore has a G1/8 port. Force output is 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. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X275S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X275S replacement — usually within 7-8 hours.