This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X650STC, 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 SI32X650STC
The AirTAC SI32 Standard Air Cylinder SI32X650STC 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 SAI32X650STC, 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 → SAI32X650STC
- 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 SI32X650STC
The AirTAC SI32X650STC is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 650mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32X650STC, a direct upgrade retaining the exact TC trunnion mounting interface, stroke, and output force.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The original SI utilized CS1-B/DS1-B sensors, while the SAI family uses current AirTAC switches.
Airtac SI32 Standard Air Cylinder SI32X650STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X650STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X650STC |
| 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 SAI32X650STC 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 SAI32X650STC 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 SI32X650STC
| 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 SI32X650STC Is Used
Diverting Small Parts
Pushes light packages on a 650mm run using the 32mm bore, yielding 402N push at 0.5MPa for reliable lateral sorting.
Light Assembly Ejection
Ejects small machined components from a fixture over 650mm, benefiting from the 30-800mm/s speed range and M10x1.25 rod thread.
Replacing the Airtac SI32 Standard Air Cylinder SI32X650STC with the SAI32X650STC
To replace the SI32X650STC, order the SAI32X650STC. Confirm the ISO 15552 TC trunnion mount, 32mm bore, 650mm stroke, G1/8 port, and the -S magnet. If you need more force, the adjacent 40mm bore yields 628N push at 0.5MPa; if less is acceptable, check smaller profiles. Because the 650mm stroke invites rod bending, use an external guide to prevent side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so add a pilot check valve or explore the SAIL or BSAI lock variants for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X650STC
- ✓ 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 SI32X650STC FAQ
Yes, the SI32X650STC is discontinued. The direct replacement is the SAI32X650STC. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 650mm stroke, G1/8 port, TC mount, and output force.
It features a G1/8 port and provides 402N push / 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a maximum theoretical force of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X650STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X650STC replacement — usually within 7-8 hours.