This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X45, 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 SI32X45
The AirTAC SI32 Standard Air Cylinder SI32X45 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 45mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X45, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke45 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X45
- 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 SI32X45
The AirTAC SI32X45 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 45 mm stroke. Delivering 402 N push force at 0.5 MPa via a G1/8 port, it is directly replaced by the SAI32X45. This direct upgrade shares the exact same interface, bore, stroke, force and mounting accessories.
The SAI32X45 features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this specific SKU lacks a magnet (-S) and cannot accept a CS1-B/DS1-B sensor.
Airtac SI32 Standard Air Cylinder SI32X45 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X45 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X45 |
| Bore size | Ø32 mm |
| Stroke | 45 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 SAI32X45 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 SAI32X45 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 SI32X45
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 SI32X45 Is Used
Small Part Ejection
Ideal for pushing lightweight completed parts out of a machining fixture using its 402 N thrust at 0.5 MPa.
Component Sorting
Provides reliable actuation in diverting small electronic or plastic components along a packaging conveyor line.
Replacing the Airtac SI32 Standard Air Cylinder SI32X45 with the SAI32X45
To replace the SI32X45, order the SAI32X45. Confirm the ISO 15552 mounting interface, your 45 mm stroke, G1/8 port thread (PT/G/NPT) and mounting accessory (like LB foot or TC trunnion). Because this SKU has no magnet, it cannot take a sensor; if position detection is needed, order an SAI32X45S instead. For sizing both ways: dropping to a smaller bore reduces force, while stepping up increases footprint. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X45
- ✓ 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 SI32X45 FAQ
Yes, the SI32X45 is discontinued. The direct replacement is the SAI32X45, which shares the same ISO 15552 mounting interface, 32 mm bore, 45 mm stroke, output force, G1/8 port and mounting accessories.
The 32 mm bore uses a G1/8 port. It delivers 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 max force of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32X45
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X45 replacement — usually within 7-8 hours.