This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X275, 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 SI32X275
The AirTAC SI32 Standard Air Cylinder SI32X275 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 SAI32X275, 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 → SAI32X275
- 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 SI32X275
The AirTAC SI32X275 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 275 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X275, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, force and port.
The SAI32X275 features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this specific SKU lacks a magnet, so it cannot accept a CS1-B or DS1-B sensor.
Airtac SI32 Standard Air Cylinder SI32X275 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X275 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X275 |
| 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 SAI32X275 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 SAI32X275 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 SI32X275
| 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 SI32X275 Is Used
Small Part Ejection
Uses the 402 N push force at 0.5 MPa to reliably push lightweight machined components out of a fixture on an automated line.
Clamp Actuation
Drives secondary clamps on a welding jig, taking advantage of the compact 32 mm ISO 15552 profile barrel to fit tight cell spaces.
Replacing the Airtac SI32 Standard Air Cylinder SI32X275 with the SAI32X275
To replace the SI32X275, order the SAI32X275 and confirm your ISO 15552 mounting accessory (LB foot, FA flange, or TC trunnion), 275 mm stroke, and G1/8 port (PT/G/NPT thread options). Because this SKU has no -S magnet, it cannot support position sensing; if you need switches, select an SAI32X275S and use current AirTAC sensors. At 275 mm stroke, prevent rod bending by guiding the load to avoid side-load forces. If neighbouring bores fit your fixture, a 40 mm bore offers 628 N push at 0.5 MPa, while this 32 mm bore provides 402 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve, or specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X275
- ✓ 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 SI32X275 FAQ
Yes, the SI32X275 is discontinued. The direct replacement is the SAI32X275. It shares the same ISO 15552 mounting interface, 32 mm bore, 275 mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
This double-acting cylinder has a G1/8 port. It delivers 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 force of 82 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Request a Quote for the SAI32X275
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X275 replacement — usually within 7-8 hours.