This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X68S, 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 SI32X68S
The AirTAC SI32 Standard Air Cylinder SI32X68S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 68mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X68S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke68 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X68S
- 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 SI32X68S
The AirTAC SI32X68S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 68mm stroke. Delivering 402N push force at 0.5MPa, it is replaced by the SAI32X68S. This direct upgrade matches the G1/8 port, M10x1.25 thread, and mounting interface. Note that 68mm is a non-standard stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It adds SAIL, SAIF, and BSAI variants absent in the SI line. The -S magnet works with CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32X68S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X68S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X68S |
| Bore size | Ø32 mm |
| Stroke | 68 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 SAI32X68S 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 SAI32X68S 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 SI32X68S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×68 | 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 SI32X68S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to eject small molded parts from a fixture.
Light Clamping
Provides reliable clamping for light assembly tasks using the 345N pull force.
Sensor Routing
Uses the -S magnet with CS1-B/DS1-B switches to confirm 68mm stroke position.
Replacing the Airtac SI32 Standard Air Cylinder SI32X68S with the SAI32X68S
To replace the SI32X68S, order the SAI32X68S. Verify the ISO 15552 mounting interface, G1/8 port, and -S magnet for CS1-B/DS1-B switches. This 68mm stroke is non-standard. If sizing up, the 40mm bore yields 628N push at 0.5MPa; if down-sizing, confirm load needs. For load holding on air loss, use an external rod lock or pilot check valve, as cushions only decelerate. Consider SAIL or BSAI lock variants if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X68S
- ✓ 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 SI32X68S FAQ
Yes, the SI32X68S is discontinued. The direct replacement is the SAI32X68S, matching the ISO 15552 interface, 32mm bore, 68mm stroke, G1/8 port, and mounting accessories.
The 32mm bore has a G1/8 port. It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a max force of 82kgf at 1.0MPa.
Request a Quote for the SAI32X68S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X68S replacement — usually within 7-8 hours.