This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X75STC, 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 SI32X75STC
The AirTAC SI32 Standard Air Cylinder SI32X75STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 75mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X75STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke75 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X75STC
- 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 SI32X75STC
The AirTAC SI32X75STC is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 75 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X75STC, a direct replacement sharing the exact ISO 15552 mounting interface, TC trunnion mount, and output force.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For position sensing, this -S model has a piston magnet for legacy CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line.
Airtac SI32 Standard Air Cylinder SI32X75STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X75STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X75STC |
| Bore size | Ø32 mm |
| Stroke | 75 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 SAI32X75STC 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 SAI32X75STC 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 SI32X75STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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 SI32X75STC Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of a fixture on an automated lathe, utilizing the 402 N push force at 0.5 MPa.
Package Diverting
Acts as a compact diverter arm on a packaging line, using the 75 mm stroke to redirect small cartons without taking up excessive frame space.
Clamp Actuation
Provides reliable clamping pressure for holding thin sheet metal or plastic housings during light assembly or gluing processes.
Replacing the Airtac SI32 Standard Air Cylinder SI32X75STC with the SAI32X75STC
To replace the SI32X75STC, order the SAI32X75STC. Verify the ISO 15552 TC trunnion interface, 32 mm bore, 75 mm stroke, G1/8 port, and the -S magnet. If you need more force, the adjacent 40 mm bore yields 628 N push at 0.5 MPa; if less is acceptable, check smaller non-ISO profiles. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants. The 75 mm stroke is short enough to avoid rod-bending side-load concerns.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X75STC
- ✓ 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 SI32X75STC FAQ
Yes, the SI32X75STC is discontinued. The direct replacement is the AirTAC SAI32X75STC. It shares the identical ISO 15552 mounting interface, 32 mm bore, 75 mm stroke, G1/8 port, and TC trunnion mount, fitting directly into existing fixtures.
This 32 mm bore double-acting cylinder uses a G1/8 air port. It generates 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 maximum of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X75STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X75STC replacement — usually within 7-8 hours.