This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X50, 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 SI32X50
The AirTAC SI32 Standard Air Cylinder SI32X50 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 SAI32X50, 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 → SAI32X50
- 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 SI32X50
The AirTAC SI32X50 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 50mm stroke. Delivering 402N push force at 0.5MPa, it is replaced by the SAI32X50. This direct successor shares the exact interface, G1/8 port, and M10x1.25 rod thread.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this non-S SKU lacks a magnet and cannot accept CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32X50 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X50 |
| 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 SAI32X50 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 SAI32X50 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 SI32X50
| 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 SI32X50 Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably kick lightweight plastic or aluminum parts out of a machining fixture.
Package Diverting
Short 50mm stroke actuates a routing gate to sort small boxes on a 30-800mm/s speed production line.
Clamp Actuation
Provides secondary clamping pressure for delicate workholding where the 345N pull force secures components without deformation.
Replacing the Airtac SI32 Standard Air Cylinder SI32X50 with the SAI32X50
To replace the SI32X50, order the SAI32X50, confirming the ISO 15552 mounting interface, 50mm stroke, and G1/8 port. If downsizing, a 32mm bore yields 402N push at 0.5MPa; if upsizing to 40mm, force jumps to 628N. This plain cylinder cannot hold a load without live air—the cushion only decelerates—so use an external pilot check valve or the SAIL lock variant for holding. The SAIF self-valve variant (bores 32-100) is another SAI-only upgrade. Since this SKU lacks the -S magnet, it cannot use position sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X50
- ✓ 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 SI32X50 FAQ
Yes, the AirTAC SI32X50 is discontinued. The direct replacement is the SAI32X50. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 50mm stroke, output force, G1/8 port, and mounting accessories.
The 32mm bore features a G1/8 air port and M10x1.25 rod thread. Force output is 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum of 82kgf at 1.0MPa.
Request a Quote for the SAI32X50
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X50 replacement — usually within 7-8 hours.