This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX50, 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 SI32AX50
The AirTAC SI32 Standard Air Cylinder SI32AX50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 50mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX50
- 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 SI32AX50
The AirTAC SI32AX50 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 50 mm stroke. Delivering 402 N push force at 0.5 MPa, it features a 12 mm carbon steel rod, M10x1.25 thread, and a G1/8 port. The direct replacement is the SAI32AX50, which shares identical mounting and force ratings.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For sensing, note this specific SI32AX50 SKU lacks a magnet and cannot accept a switch. The SAI family also adds SAIL lock and SAIF valve variants.
Airtac SI32 Standard Air Cylinder SI32AX50 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX50 |
| Bore size | Ø32 mm |
| Stroke | 50 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 SAI32AX50 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 SAI32AX50 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 SI32AX50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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 SI32AX50 Is Used
Small Part Ejection
Uses the 402 N push force at 0.5 MPa to reliably push lightweight molded parts out of an injection mold fixture.
Clamp Actuation
Fits within ISO 15552 mounting blocks to drive a 50 mm stroke clamping jaw for small aluminum machining blanks.
Gate Diversion
Cycles a 32 mm bore diverter gate on a conveyor, moving at 30-800 mm/s to redirect small packaged goods.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX50 with the SAI32AX50
To replace the SI32AX50, order the SAI32AX50. Confirm the ISO 15552 interface, 32 mm bore, 50 mm stroke, G1/8 port, and M10x1.25 thread. Because this SKU lacks a magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. Sizing both ways: this 32 mm bore gives 402 N push at 0.5 MPa; stepping up to a 40 mm bore provides 628 N, while dropping to a smaller bore reduces force. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. The SUS420J2 stainless rod option suits corrosive settings.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX50
- ✓ 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 SI32AX50 FAQ
Yes, the AirTAC SI32AX50 is discontinued. The direct replacement is the SAI32AX50. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 50 mm stroke, 402 N force, G1/8 port, and mounting interface.
The 32 mm bore features a G1/8 port. At 0.5 MPa it provides 402 N push and 345 N pull force. At 0.7 MPa push is 563 N, and at 0.9 MPa it is 724 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
Request a Quote for the SAI32AX50
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX50 replacement — usually within 7-8 hours.