This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX135S, 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 SI32AX135S
The AirTAC SI32 Standard Air Cylinder SI32AX135S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 135mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX135S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke135 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX135S
- 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 SI32AX135S
The AirTAC SI32AX135S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 135mm stroke, and an SUS420J2 stainless steel rod. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX135S, matching the interface, bore, stroke, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S suffix denotes a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32AX135S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX135S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX135S |
| Bore size | Ø32 mm |
| Stroke | 135 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 SAI32AX135S 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 SAI32AX135S 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 SI32AX135S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×135 | 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 SI32AX135S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably kick small machined components out of a fixture during automated assembly.
Package Diverting
The 135mm stroke provides the exact extension needed to push light cartons from a main conveyor belt to a sorting lane.
Lab Test Positioning
The SUS420J2 stainless rod offers corrosion resistance for positioning sample trays in humid or chemically exposed laboratory environments.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX135S with the SAI32AX135S
To replace the SI32AX135S, order the SAI32AX135S. Confirm the ISO 15552 mounting interface, 32mm bore, 135mm stroke, G1/8 port (PT/G/NPT thread), and mounting accessory. The -A rod is SUS420J2 stainless steel, and -S means a magnet is present for CS1-B/DS1-B switches; the SAI uses current AirTAC switches. A plain cylinder drifts without live air, so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 135mm, side-load is low, but if sizing up to a 40mm bore for more force (528N pull at 0.5MPa), ensure your fixture handles the larger footprint.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX135S
- ✓ 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 SI32AX135S FAQ
Yes, the SI32AX135S is discontinued. The direct replacement is the SAI32AX135S. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 135mm stroke, G1/8 port, and mounting fixtures exactly.
It features a G1/8 port and delivers 402N push / 345N pull at 0.5MPa, 563N push at 0.7MPa, and 724N push at 0.9MPa. The theoretical max force is 82kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX135S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX135S replacement — usually within 7-8 hours.