This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X750, 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.

The AirTAC SI32 Standard Air Cylinder SI32X750 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 750mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X750, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X750 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 750 mm stroke. Delivering 402 N push force at 0.5 MPa, it features a G1/8 port and M10x1.25 rod thread. The direct replacement is the SAI32X750, matching the exact interface, force, and mounting.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Since this specific SI SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor.
| Model | Airtac SI32 Standard Air Cylinder SI32X750 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X750 |
| Bore size | Ø32 mm |
| Stroke | 750 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 SAI32X750 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32X750 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×750 | 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).
Pushes small packages on a 750 mm stroke packaging line where 402 N push force at 0.5 MPa is sufficient.
Ejects lightweight machined parts over a long travel distance, utilizing the 30-800 mm/s speed range.
To replace the SI32X750, order the SAI32X750 keeping the identical 32 mm bore, 750 mm stroke, G1/8 port, and ISO 15552 mounting. Because this SKU has no -S magnet, it cannot support position sensing. For a 750 mm stroke, external guides are recommended to prevent rod bending and side-load wear. If you need higher force, neighboring bores like the 40 mm offer 628 N push at 0.5 MPa. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SI32X750 is discontinued. The direct replacement is the SAI32X750, a true ISO 15552 profile cylinder that matches the 32 mm bore, 750 mm stroke, 402 N force, G1/8 port, and mounting interface.
The bore is 32 mm with a G1/8 port. Force output is 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. The cushion stroke is 27 mm.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X750 replacement — usually within 7-8 hours.