This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX75STC, 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 SI32BX75STC
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX75STC 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 drop-in replacement is the SAI32BX75STC, 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 → SAI32BX75STC
- 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 SI32BX75STC
The AirTAC SI32BX75STC is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 75mm stroke, SUS304 stainless steel rod, and a TC trunnion mount. Delivering 402N push force at 0.5 MPa, it is replaced by the SAI32BX75STC. This drop-in successor shares the exact ISO 15552 mounting interface, G1/8 port, and output force, fitting existing fixtures perfectly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For your 402N capacity, expect a safe working load around 241N or a 20kg vertical lift with a 2:1 margin. The SAI family also adds SAIL, SAIF, and BSAI lock variants. This SI unit's -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32BX75STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX75STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX75STC |
| 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 SAI32BX75STC 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 SAI32BX75STC produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32BX75STC
| 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 SI32BX75STC Is Used
Small Part Ejection
Ideal for pushing light machined components out of a fixture using its 241N safe working load and 75mm travel distance.
Package Diverting
Actuates a routing gate on a 20kg vertical lift capacity to sort small boxes along a handling line.
Lab Test Clamping
Holds delicate test samples securely in place, where the SUS304 stainless rod prevents moisture corrosion.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX75STC with the SAI32BX75STC
To replace the SI32BX75STC, order the SAI32BX75STC. Verify your ISO 15552 TC trunnion mounting, 75mm stroke, G1/8 port, and the -S magnet for current AirTAC switches. The SUS304 rod suits corrosive settings. Sizing both ways: this 32mm bore yields 402N push at 0.5 MPa; dropping to a smaller bore cuts force, while a 40mm bore gives 628N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding. The SAIL or BSAI lock variants offer integrated holding if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX75STC
- ✓ 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 SI32BX75STC FAQ
Yes, the AirTAC SI32BX75STC is discontinued. The exact drop-in replacement is the SAI32BX75STC. It shares the same ISO 15552 mounting interface, 32mm bore, 75mm stroke, G1/8 port, and TC trunnion mount, fitting directly into your existing fixtures.
The 32mm bore features a G1/8 air port. At 0.5 MPa it provides 402N push and 345N pull force. At 0.7 MPa push is 563N, and 724N at 0.9 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX75STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX75STC replacement — usually within 7-8 hours.