This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX650, 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 SI32AX650
The AirTAC SI32 Standard Air Cylinder SI32AX650 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 650mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX650, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke650 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX650
- 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 SI32AX650
The AirTAC SI32AX650 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore, 650 mm stroke, and a SUS420J2 stainless steel rod. Delivering 402 N push force at 0.5 MPa, it is replaced by the SAI32AX650. This direct upgrade retains the exact ISO 15552 mounting interface, G1/8 port, and M10x1.25 rod thread. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
This SKU lacks a magnet and cannot accept position sensors, unlike legacy CS1-B/DS1-B switches. Note that plain cylinders drift without live air; for load holding, consider the SAIL lock or BSAI clamp-lock variants.
Airtac SI32 Standard Air Cylinder SI32AX650 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX650 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX650 |
| Bore size | Ø32 mm |
| Stroke | 650 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 SAI32AX650 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 SAI32AX650 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 SI32AX650
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×650 | 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 SI32AX650 Is Used
Light Part Ejection
Uses the 402 N push force at 0.5 MPa to eject small molded components from a fixture, relying on the SUS420J2 stainless rod for corrosion resistance in humid environments.
Package Diverting
Actuates a diverting arm along a 650 mm travel to sort lightweight packages, requiring external guides to prevent rod bending during the extended stroke.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX650 with the SAI32AX650
To replace the discontinued SI32AX650, order the SAI32AX650. Confirm the ISO 15552 mounting fixture, 650 mm stroke, G1/8 port, and M10x1.25 thread. Because this is a non-magnet SKU, it cannot support sensors; if sensing is needed, order an SAI with the -S suffix. At 650 mm, the 12 mm rod is susceptible to bending—use external guides to prevent side loads. If more force is needed, step up to a 40 mm bore (628 N push at 0.5 MPa); if less is required, re-evaluate your load. The air cushion only decelerates the piston; it does not hold load. For drop prevention, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX650
- ✓ 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 SI32AX650 FAQ
Yes, the SI32AX650 is discontinued. The direct replacement is the SAI32AX650. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 650 mm stroke, G1/8 port, and mounting interface, while adding an upgraded piston seal.
The 32 mm bore uses a G1/8 port. Force output is 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 maximum of 82 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 27 mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX650
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX650 replacement — usually within 7-8 hours.