This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX150, 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 SI32AX150
The AirTAC SI32 Standard Air Cylinder SI32AX150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 150mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke150 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX150
- 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 SI32AX150
The AirTAC SI32AX150 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 150mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX150, which shares the exact ISO 15552 mounting interface, bore, stroke, output force, and port size for seamless fixture integration. This specific SKU features a SUS420J2 stainless steel piston rod for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors.
Upgrading to the SAI32AX150 retains all original ratings while introducing an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. If load holding is required, note that standard cylinders drift on air loss; consider the SAIL or BSAI lock variants or an external pilot check valve.
Airtac SI32 Standard Air Cylinder SI32AX150 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX150 |
| Bore size | Ø32 mm |
| Stroke | 150 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 SAI32AX150 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 SAI32AX150 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 SI32AX150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×150 | 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 SI32AX150 Is Used
Small Parts Ejection
Ideal for pushing lightweight machined components out of fixtures using its 402N push force at 0.5MPa.
Packaging Diverters
Actuates sorting gates and diverting arms in conveyor lines where a 150mm stroke and SUS420J2 rod resist moisture.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX150 with the SAI32AX150
To replace the discontinued SI32AX150, order the SAI32AX150, confirming the ISO 15552 mounting interface, 32mm bore, 150mm stroke, and G1/8 port (available in PT, G, or NPT). This unit uses an M10x1.25 rod thread and a SUS420J2 stainless rod. Because this SKU lacks the -S magnet, it cannot support CS1-B or DS1-B sensors; if sensing is needed, select an SAI32AX150S. For sizing alternatives, neighboring bores like the 40mm offer 628N push at 0.5MPa. Since the stroke is 150mm, ensure adequate guide support to prevent rod bending under side loads. Remember that the air cushion only decelerates the piston near stroke end and does not hold loads pneumatically.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX150
- ✓ 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 SI32AX150 FAQ
Yes, the SI32AX150 is discontinued. The direct replacement is the SAI32AX150. It is dimensionally interchangeable per ISO 15552, maintaining the same 32mm bore, 150mm stroke, force, G1/8 port, and mounting interface.
This 32mm bore cylinder uses a G1/8 air port and provides 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. It operates at speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX150
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX150 replacement — usually within 7-8 hours.