This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X50N, 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 SI32X50N
The AirTAC SI32 Standard Air Cylinder SI32X50N 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 SAI32X50N, 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 → SAI32X50N
- 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 SI32X50N
The AirTAC SI32X50N is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 50 mm stroke. It delivers 402 N push force at 0.5 MPa via a G1/8 port. AirTAC replaced it with the SAI32X50N, a direct sharing the same interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This NBR-sealed SKU lacks a magnet, so it cannot take a sensor. For load holding, use SAIL or BSAI lock variants.
Airtac SI32 Standard Air Cylinder SI32X50N Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X50N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X50N |
| 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 SAI32X50N 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 SAI32X50N 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 SI32X50N
| 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 SI32X50N 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.
Clamp Actuation
Actuates secondary hold-down clamps on a machining cell where a 50 mm stroke is sufficient.
Gate Diversion
Pivots small product diverters on a packaging line, taking advantage of the compact 32 mm profile barrel.
Replacing the Airtac SI32 Standard Air Cylinder SI32X50N with the SAI32X50N
To replace the SI32X50N, order the SAI32X50N. Confirm the ISO 15552 mounting interface, 50 mm stroke, G1/8 port, and NBR seal. Because this is a no-S SKU, it cannot accept a magnetic switch; order a magnet-equipped SAI if sensing is needed. The 32 mm bore provides 402 N push at 0.5 MPa; if less force is required, drop to a smaller bore, or step up to 40 mm (628 N) for more thrust. Note that a plain cylinder drifts on air loss; for held loads, select the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X50N
- ✓ 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 SI32X50N FAQ
Yes, the SI32X50N is discontinued. The direct replacement is the SAI32X50N. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 50 mm stroke, force, G1/8 port, and mounting accessories.
The 32 mm bore uses a G1/8 port. It provides 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical max of 82 kgf at 1.0 MPa. It features a 12 mm rod and 27 mm adjustable cushions.
Request a Quote for the SAI32X50N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X50N replacement — usually within 7-8 hours.