This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX275S, 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 SI32AX275S
The AirTAC SI32 Standard Air Cylinder SI32AX275S 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 SAI32AX275S, 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 → SAI32AX275S
- 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 SI32AX275S
The AirTAC SI32AX275S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 275mm stroke. Featuring a SUS420J2 stainless piston rod and a built-in magnet for CS1-B/DS1-B sensors, it delivers 402N push at 0.5MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32AX275S, a direct alternative retaining 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 extended life. Note that a plain cylinder drifts on air loss; the air cushion only decelerates the stroke. For load holding, explore the SAIL or BSAI lock variants.
Airtac SI32 Standard Air Cylinder SI32AX275S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX275S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX275S |
| 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 SAI32AX275S 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 SAI32AX275S 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 SI32AX275S
| 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 SI32AX275S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture on an automated line.
Lab Test Fixtures
The SUS420J2 stainless rod provides corrosion resistance for clamping test samples in humid or mildly chemical environments.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX275S with the SAI32AX275S
To replace the SI32AX275S, order the SAI32AX275S. Confirm the ISO 15552 mounting interface, the 32mm bore, 275mm stroke, G1/8 port, and the -S magnet for legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). The -A rod denotes SUS420J2 stainless steel. If sizing down, a 32mm bore yields 402N push at 0.5MPa; if sizing up, a 40mm bore provides 628N. At 275mm stroke, guide external rods to prevent side-load bending. For held loads without live air, use an external rod lock or pilot check valve, or select the SAIL (air-released lock) or BSAI (clamp-lock) variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX275S
- ✓ 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 SI32AX275S FAQ
Yes, the SI32AX275S is discontinued. The direct replacement is the SAI32AX275S. It shares the same ISO 15552 mounting interface, 32mm bore, 275mm stroke, G1/8 port and output force, fitting existing fixtures perfectly.
This double-acting cylinder uses a G1/8 port. It generates 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX275S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX275S replacement — usually within 7-8 hours.