This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX140, 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 SI32AX140
The AirTAC SI32 Standard Air Cylinder SI32AX140 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 140mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX140, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke140 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX140
- 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 SI32AX140
The AirTAC SI32AX140 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 140mm stroke. It delivers 402N push and 345N pull at 0.5MPa through a G1/8 port. The direct replacement is the SAI32AX140, which shares the exact ISO 15552 mounting interface, bore, force, and accessories. The SAI upgrade features a new piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. This SI32AX140 variant uses a SUS420J2 stainless steel rod (-A) for corrosion resistance, but lacks a magnet (-S), meaning it cannot accept position sensors.
The standard carbon steel rod can be swapped for SUS304, and seal options include Viton H for temperatures up to 150C. Note that a plain cylinder does not hold load without live air; the cushion only decelerates. For load holding, consider the SAIL lock or BSAI clamp-lock variants.
Airtac SI32 Standard Air Cylinder SI32AX140 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX140 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX140 |
| Bore size | Ø32 mm |
| Stroke | 140 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 SAI32AX140 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 SAI32AX140 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 SI32AX140
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×140 | 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 SI32AX140 Is Used
Material Sorting
Actuates diverter gates on compact conveyors, benefiting from the SUS420J2 stainless rod in mildly corrosive environments.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX140 with the SAI32AX140
To replace the SI32AX140, order the SAI32AX140. Verify the ISO 15552 mounting interface, 32mm bore, 140mm stroke, G1/8 port, and M10x1.25 rod thread. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order an -S version if position detection is needed. The 140mm stroke is under the 300mm side-load risk threshold, but always guide the load to prevent rod bending. If you need more force, the neighbouring 40mm bore offers 628N push at 0.5MPa; if less force is acceptable, check smaller profiles. For applications requiring load holding on air loss, upgrade to the SAIL (air-released lock) or BSAI (clamp-lock) variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX140
- ✓ 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 SI32AX140 FAQ
Yes, the AirTAC SI32AX140 is discontinued. The direct replacement is the SAI32AX140. It features the same ISO 15552 mounting interface, 32mm bore, 140mm stroke, force, and G1/8 port, fitting directly into existing fixtures.
This double-acting cylinder has a G1/8 port. It provides 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical maximum force of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX140
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX140 replacement — usually within 7-8 hours.